EP3088741A1 - Improved control system for a turbo pump - Google Patents

Improved control system for a turbo pump Download PDF

Info

Publication number
EP3088741A1
EP3088741A1 EP16167333.0A EP16167333A EP3088741A1 EP 3088741 A1 EP3088741 A1 EP 3088741A1 EP 16167333 A EP16167333 A EP 16167333A EP 3088741 A1 EP3088741 A1 EP 3088741A1
Authority
EP
European Patent Office
Prior art keywords
turbopump
drive shaft
torque generator
magnetic
magnetic torque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16167333.0A
Other languages
German (de)
French (fr)
Other versions
EP3088741B1 (en
Inventor
Manuel KLEIN
Ariane Deneuve
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ArianeGroup SAS
Original Assignee
SNECMA SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SNECMA SAS filed Critical SNECMA SAS
Publication of EP3088741A1 publication Critical patent/EP3088741A1/en
Application granted granted Critical
Publication of EP3088741B1 publication Critical patent/EP3088741B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Definitions

  • the present invention relates to the field of turbopumps, used in particular for spacecraft.
  • turbopumps The control of turbopumps is commonly carried out either by controlling the flow rate at the inlet of the turbopump, for example by restricting the flow rate downstream of the turbopump or by controlling the rotational speed of a drive shaft of the turbopump. for example by controlling the energy supplied to this drive shaft, commonly by a turbine.
  • Such a control is adapted in the nominal operating range of a turbopump, once started and steady state, and having enough energy to allow a significant gain between an actuator and the parameter to be controlled.
  • turbopumps tend either to converge towards the nominal speed because of energy inputs resulting from the thermodynamic cycle that takes place within the turbopump, or to remain in a standby mode in the absence of a fuel supply. additional energy.
  • the turbopump may furthermore comprise a control unit, configured to drive the magnetic torque generator in order selectively to apply a driving or resistant torque on the drive shaft, for example depending on the state of the turbopump or of a command applied by a control software.
  • a control unit configured to drive the magnetic torque generator in order selectively to apply a driving or resistant torque on the drive shaft, for example depending on the state of the turbopump or of a command applied by a control software.
  • the magnetic torque generator comprises for example magnetic poles arranged on the stator and on the rotor of the turbopump, so as to form a synchronous machine.
  • the magnetic torque generator comprises, for example, magnetic poles arranged on the stator, and a material ferromagnetic arranged on the rotor, adapted to allow the generation of an induced field, so as to form an asynchronous machine.
  • the magnetic torque generator is for example configured to generate a radial and / or axial flow.
  • the magnetic torque generator may be configured to establish a radial holding magnetic field of the drive shaft and thus perform a bearing function, and / or configured to form a stop limiting the axial displacement of the shaft training and thus perform a balancing function.
  • Said magnetic holding field is for example a repulsive field, configured to keep the drive shaft spaced from the stator of the turbopump.
  • the figure 2 schematically shows a turbopump 1 according to one aspect of the invention.
  • the turbopump 1 shown comprises a fixed assembly defining a stator, and a movable assembly defining a rotor.
  • the rotor of the turbopump 1 comprises for example a drive shaft 2, typically driven in rotation by a turbine, not shown in this figure, or any other suitable rotating drive member.
  • the drive shaft 2 performs the rotational drive of the rotor of the turbopump 1, and thus ensures its operation.
  • the fixed assembly comprises for example a casing 3 of the turbopump 1, as well as bearings 4 for mounting the drive shaft 2 rotating relative to the casing 3.
  • the regimes R2 and R3, corresponding to the steady operating speeds of the turbopump are disjoint, that is to say that a continuous transition from the R2 regime to the R3 regime (or vice versa) is possible only by going through an unstable intermediate regime, and that operation outside these two regimes R2 or R3 will naturally tend to bring the turbopump towards one or the other of these stable regimes.
  • the turbopump 1 further comprises a magnetic torque generator 5, configured to selectively apply a torque to the drive shaft 2.
  • the magnetic torque generator 5 comprises a fixed part 51, for example magnetic poles disposed on the stator of the turbopump 1, and a movable part 52 mounted on the drive shaft 2, for example magnetic poles or portions comprising a ferromagnetic material.
  • the magnetic torque generator 5 is associated with a control 6, configured to control the torque applied by the magnetic torque generator 5 on the drive shaft 2.
  • the control 6 typically comprises a shaft position sensor drive 2, in order to control the torque applied by the magnetic torque generator 5 in particular according to the position of the drive shaft 2.
  • the magnetic torque generator 5 is disposed between two bearings 4 of the drive shaft 2. Such positioning is not limiting; the magnetic torque generator 5 may also be disposed at one end of the drive shaft 2, or in any other suitable configuration.
  • the magnetic poles of the fixed portion 51 and the movable portion 52 may for example be distributed along several distinct portions of the drive shaft 2.
  • the magnetic torque generator 5 is radial flow. Another embodiment not shown is the axial flow torque generator.
  • the magnetic torque generator 5 has a similar operation to that of a synchronous machine.
  • the fixed portion 51 of the magnetic torque generator 5 comprises magnetic poles
  • the movable portion 52 of the magnetic torque generator 5 comprises portions comprising a ferromagnetic material
  • the magnetic torque generator 5 has a similar operation to that of an asynchronous machine.
  • the control of the phase and the intensity of the current of the magnetic torque generator 5 makes it possible to control the rotating field generated, and thus to control the torque produced by the magnetic torque generator 5 on the drive shaft 2.
  • the torque thus produced by the magnetic torque generator 5 on the drive shaft 2 can be driven in a fine manner, thus allowing control of the resulting torque on the drive shaft 2.
  • the magnetic torque generator 5 thus makes it possible to generate a torque on the drive shaft 2 of the turbopump, and thus makes it possible to modify its modes of operation.
  • the magnetic torque generator 5 produces a torque that can be a driving torque or a torque that is resistant to torque. drive shaft 2.
  • the magnetic torque generator 5 makes it possible to obtain an additional stable speed of the turbopump between the rated speed R3 and the waiting speed R2 already described with reference to FIG. figure 1 .
  • Such a stable R4 regime is obtained by applying a motor or resistant torque on the drive shaft 2 of the turbopump 1, when the latter is in the R2 waiting mode or rated R3.
  • the magnetic torque generator 5 can apply a driving torque on the drive shaft 2, in order to increase the rotational speed and the resulting torque on the shaft of the engine. drive 2 of the turbopump 1, and thus achieve a revving of the turbopump 1.
  • the magnetic torque generator 5 can apply a resistive torque on the drive shaft 2, in order to reduce the speed of rotation and the resulting torque on the rotor. drive shaft 2 of the turbopump 1, and thus achieve a steady state of the turbopump 1.
  • the magnetic torque generator 5 allows, via the application of a driving torque or resistant on the drive shaft 2, to reach stable operating points between the waiting mode R2 and the nominal speed R3, by controlling the resulting torque on the drive shaft 2. This gives an additional stability range for the turbomachine, identified by the region R4 on the figure 3 .
  • the application of a driving or resistant torque on the drive shaft 2 furthermore makes it possible to improve the transition between the nominal speed R3 and the waiting mode R2, ie by starting the revving to go from the R2 waiting at rated speed R3 and also to improve the start of the turbopump to go from a shutdown state R1 to R2 waiting mode, or by dissipating the energy commonly provided by the turbine and thus achieving a lowering the nominal speed R3 towards the waiting mode R2.
  • the magnetic torque generator 5 makes it possible to drive the drive shaft at very low and controlled rotational speeds, which makes it possible to circulate cryogenic propellants in the turbopump in order to realize its implementation. in cold, that is to say its gradual cooling of the ambient temperature to cryogenic operating temperatures.
  • Such a controlled circulation of propellants makes it possible to reduce propellant consumption compared with conventional cold-setting processes.
  • the precise control of the start-up torque makes it possible to specify the design of the start-up sequences of the turbopump, in particular by overcoming inaccuracies due in particular to the low-speed regimes of conventional turbopumps whose properties are not well known. sufficiently precise in the design phases.
  • the magnetic torque generator 5 also makes it possible to perform a function of holding the drive shaft 2, forming an axial stop or a bearing for the drive shaft 2. To do this, the magnetic torque generator 5 is configured to generate a repulsive force between the stator and the rotor, or more precisely between the fixed portion 51 and the movable portion 52 of the magnetic torque generator 5. Such a field repellent is typically achieved by generating a stator flux opposite the rotor flux, for example by generating a rotating field at a very high speed, or by performing a passive configuration in which the North / South poles of the rotor are permanently in phase with the poles South / North (respectively) of the stator.
  • the repulsion force thus generated makes it possible to avoid contact between the drive shaft 2 and the stator, which is advantageous both in terms of efficiency and wear.
  • the magnetic torque generator 5 is a reversible system, and that the rotation of the drive shaft 2 can thus be exploited to generate electricity when an associated electrical converter is also reversible , for example when the turbopump 1 is in a steady state such as the rated speed R3, for which it is not necessary to apply a torque via the magnetic torque generator 5.
  • the various functions performed by the magnetic torque generator 5 can be grouped together. For example, depending on the speed of the turbopump 1, perform a torque application function on the drive shaft 2 or energy recovery to generate electricity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

Turbopompe (1) d'engin spatial comprenant - un ensemble fixe définissant un stator de la turbopompe (1), et - un ensemble mobile définissant un rotor de la turbopompe, comprenant un arbre d'entrainement (2), - un générateur magnétique de couple (5) configuré de manière à sélectivement appliquer un couple sur l'arbre d'entrainement (2), la turbopompe (1) présentant deux régimes stables de fonctionnement (R2, R3) disjoints, caractérisée en ce qu'elle comprend en outre une unité de commande (6), configurée de manière à piloter le générateur magnétique de couple (5) afin d'appliquer sélectivement un couple moteur ou résistant sur l'arbre d'entrainement (2) en fonction d'une commande appliquée, de manière à définir un régime stable intermédiaire (R3) entre lesdits deux régimes stables de fonctionnement (R2, R3) disjoints.Turbopomp (1) of spacecraft comprising a fixed assembly defining a stator of the turbopump (1), and a mobile assembly defining a rotor of the turbopump, comprising a drive shaft (2), a magnetic torque generator (5) configured to selectively apply torque to the drive shaft (2), the turbopump (1) having two stable operating modes (R2, R3) disjoint, characterized in that it further comprises a control unit (6), configured to drive the magnetic torque generator (5) to selectively apply a driving or resistance torque to the drive shaft (2) according to a command applied, so as to define an intermediate steady state (R3) between said two stable operating modes (R2, R3) disjoint.

Description

La présente invention concerne le domaine des turbopompes, utilisées notamment pour les engins spatiaux.The present invention relates to the field of turbopumps, used in particular for spacecraft.

ETAT DE L'ARTSTATE OF THE ART

Les turbopompes utilisées pour les moteurs d'engins spatiaux doivent communément fonctionner sur des domaines étendus.Turbopumps used for spacecraft engines must commonly operate over wide areas.

Le contrôle des turbopompes est communément réalisé soit via le pilotage du débit en entrée de la turbopompe, par exemple en restreignant le débit en aval de la turbopompe, soit via le pilotage de la vitesse de rotation d'un arbre d'entrainement de la turbopompe, par exemple en contrôlant l'énergie apportée à cet arbre d'entrainement, communément par une turbine.The control of turbopumps is commonly carried out either by controlling the flow rate at the inlet of the turbopump, for example by restricting the flow rate downstream of the turbopump or by controlling the rotational speed of a drive shaft of the turbopump. for example by controlling the energy supplied to this drive shaft, commonly by a turbine.

Un tel contrôle est adapté dans la plage nominale de fonctionnement d'une turbopompe, une fois démarrée et en régime stable, et disposant de suffisamment d'énergie pour permettre un gain important entre un actionneur et le paramètre à contrôler.Such a control is adapted in the nominal operating range of a turbopump, once started and steady state, and having enough energy to allow a significant gain between an actuator and the parameter to be controlled.

Les turbopompes présentent en effet plusieurs régimes stables, à savoir :

  • R1 : A l'arrêt,
  • R2 : En attente, dans lequel la turbopompe est en fonctionnement mais sa vitesse de rotation et le couple appliqué sont minimisés,
  • R3 : En régime nominal, à vitesse de rotation et couple élevés.
Turbopumps have several stable regimes, namely:
  • R1: When stopped,
  • R2: Waiting, in which the turbopump is operating but its rotational speed and the applied torque are minimized,
  • R3: Nominal speed, high speed and high torque.

Ces régimes R1, R2 et R3 sont indiqués schématiquement sur la figure 1, en fonction de la poussée délivrée (axe horizontal X) et de la vitesse de rotation (axe vertical Y).These regimes R1, R2 and R3 are schematically indicated on the figure 1 , depending on the thrust delivered (horizontal axis X) and the speed of rotation (vertical axis Y).

Les contrôles conventionnels ne sont cependant pas adaptés pour permettre un fonctionnement en régime stable entre le régime d'attente R2, et le régime nominal R3 de la turbopompe. En effet, les turbopompes ont tendance soit à converger vers le régime nominal du fait d'apports d'énergie résultant du cycle thermodynamique ayant lieu au sein de la turbopompe, soit à demeurer en régime d'attente en l'absence d'apport d'énergie additionnelle.However, the conventional controls are not adapted to allow steady state operation between the standby mode R2, and the rated speed R3 of the turbopump. In fact, turbopumps tend either to converge towards the nominal speed because of energy inputs resulting from the thermodynamic cycle that takes place within the turbopump, or to remain in a standby mode in the absence of a fuel supply. additional energy.

On cherche ainsi à obtenir un fonctionnement amélioré entre le régime d'attente et le régime nominal.In this way, it is sought to obtain improved operation between the standby mode and the nominal speed.

PRESENTATION DE L'INVENTIONPRESENTATION OF THE INVENTION

La présente invention vise à répondre au moins en partie à ces problématiques, et propose ainsi une turbopompe comprenant

  • un ensemble fixe définissant un stator de la turbopompe, et
  • un ensemble mobile définissant un rotor de la turbopompe, comprenant un arbre d'entrainement,
caractérisée en ce que la turbopompe comprend un générateur magnétique de couple configuré de manière à sélectivement appliquer un couple sur l'arbre d'entrainement.The present invention aims at responding at least in part to these problems, and thus proposes a turbopump comprising
  • a fixed assembly defining a stator of the turbopump, and
  • a moving assembly defining a rotor of the turbopump, comprising a drive shaft,
characterized in that the turbopump comprises a magnetic torque generator configured to selectively apply torque to the drive shaft.

La turbopompe peut comprendre en outre une unité de commande, configurée de manière à piloter le générateur magnétique de couple afin d'appliquer sélectivement un couple moteur ou résistant sur l'arbre d'entrainement par exemple en fonction de l'état de la turbopompe ou d'une commande appliquée par un logiciel de commande.The turbopump may furthermore comprise a control unit, configured to drive the magnetic torque generator in order selectively to apply a driving or resistant torque on the drive shaft, for example depending on the state of the turbopump or of a command applied by a control software.

Le générateur magnétique de couple comprend par exemple des pôles magnétiques disposés sur le stator et sur le rotor de la turbopompe, de manière à former une machine synchrone.
En variante, le générateur magnétique de couple comprend par exemple des pôles magnétiques disposés sur le stator, et un matériau ferromagnétique disposé sur le rotor, adapté pour permettre la génération d'un champ induit, de manière à former une machine asynchrone.The magnetic torque generator comprises for example magnetic poles arranged on the stator and on the rotor of the turbopump, so as to form a synchronous machine.
As a variant, the magnetic torque generator comprises, for example, magnetic poles arranged on the stator, and a material ferromagnetic arranged on the rotor, adapted to allow the generation of an induced field, so as to form an asynchronous machine.

Le générateur magnétique de couple est par exemple configuré de manière à générer un flux radial et/ou axial.The magnetic torque generator is for example configured to generate a radial and / or axial flow.

Le générateur magnétique de couple peut être configuré de manière à établir un champ magnétique de maintien radial de l'arbre d'entrainement et réaliser ainsi une fonction palier, et/ou configuré de manière à former une butée limitant le déplacement axial de l'arbre d'entrainement et réaliser ainsi une fonction d'équilibrage.
Ledit champ magnétique de maintien est par exemple un champ répulsif, configuré pour maintenir l'arbre d'entrainement espacé du stator de la turbopompe.The magnetic torque generator may be configured to establish a radial holding magnetic field of the drive shaft and thus perform a bearing function, and / or configured to form a stop limiting the axial displacement of the shaft training and thus perform a balancing function.
Said magnetic holding field is for example a repulsive field, configured to keep the drive shaft spaced from the stator of the turbopump.

PRESENTATION DES FIGURESPRESENTATION OF FIGURES

D'autres caractéristiques, buts et avantages de l'invention ressortiront de la description qui suit, qui est purement illustrative et non limitative, et qui doit être lue en regard des figures annexées, sur lesquelles :

  • La figure 1 présentée précédemment illustre les modes de fonctionnement conventionnels d'une turbopompe,
  • La figure 2 présente schématiquement un système selon un aspect de l'invention,
  • La figure 3 illustre les modes de fonctionnement obtenus au moyen d'un tel système.
Other features, objects and advantages of the invention will emerge from the description which follows, which is purely illustrative and nonlimiting, and which should be read with reference to the appended figures, in which:
  • The figure 1 presented above illustrates the conventional modes of operation of a turbopump,
  • The figure 2 schematically shows a system according to one aspect of the invention,
  • The figure 3 illustrates the operating modes obtained by means of such a system.

Sur l'ensemble des figures, les éléments en commun sont repérés par des références numériques identiques.In all the figures, the elements in common are identified by identical reference numerals.

DESCRIPTION DETAILLEEDETAILED DESCRIPTION

La figure 2 présente schématiquement une turbopompe 1 selon un aspect de l'invention.The figure 2 schematically shows a turbopump 1 according to one aspect of the invention.

La turbopompe 1 représentée comprend un ensemble fixe définissant un stator, et un ensemble mobile définissant un rotor.
Le rotor de la turbopompe 1 comprend par exemple un arbre d'entrainement 2, typiquement entrainé en rotation par une turbine, non représentée sur cette figure, ou tout autre organe d'entrainement en rotation approprié.
L'arbre d'entrainement 2 réalise l'entrainement en rotation du rotor de la turbopompe 1, et assure ainsi son fonctionnement.
L'ensemble fixe comprend par exemple un carter 3 de la turbopompe 1, ainsi que des paliers 4 permettant de monter l'arbre d'entrainement 2 tournant par rapport au carter 3.The turbopump 1 shown comprises a fixed assembly defining a stator, and a movable assembly defining a rotor.
The rotor of the turbopump 1 comprises for example a drive shaft 2, typically driven in rotation by a turbine, not shown in this figure, or any other suitable rotating drive member.
The drive shaft 2 performs the rotational drive of the rotor of the turbopump 1, and thus ensures its operation.
The fixed assembly comprises for example a casing 3 of the turbopump 1, as well as bearings 4 for mounting the drive shaft 2 rotating relative to the casing 3.

Comme indiqué précédemment en référence à la figure 1, la turbopompe 1 présentent plusieurs régimes stables, à savoir :

  • R1 : A l'arrêt,
  • R2 : En attente, dans lequel la turbopompe est en fonctionnement mais sa vitesse de rotation et le couple appliqué sont minimisés,
  • R3 : En régime nominal, à vitesse de rotation et couple élevés.
As mentioned above with reference to the figure 1 , the turbopump 1 have several stable regimes, namely:
  • R1: When stopped,
  • R2: Waiting, in which the turbopump is operating but its rotational speed and the applied torque are minimized,
  • R3: Nominal speed, high speed and high torque.

Ces régimes R1, R2 et R3 sont indiqués schématiquement sur la figure 1, en fonction de la poussée délivrée (axe horizontal X) et de la vitesse de rotation (axe vertical Y).These regimes R1, R2 and R3 are schematically indicated on the figure 1 , depending on the thrust delivered (horizontal axis X) and the speed of rotation (vertical axis Y).

Les régimes R2 et R3, correspondant aux régimes stables de fonctionnement de la turbopompe sont disjoints, c'est-à-dire qu'une transition continue du régime R2 vers le régime R3 (ou inversement) n'est possible qu'en passant par un régime intermédiaire instable, et qu'un fonctionnement hors de ces deux régimes R2 ou R3 va tendre naturellement à ramener la turbopompe vers l'un ou l'autre de ces régimes stables.The regimes R2 and R3, corresponding to the steady operating speeds of the turbopump are disjoint, that is to say that a continuous transition from the R2 regime to the R3 regime (or vice versa) is possible only by going through an unstable intermediate regime, and that operation outside these two regimes R2 or R3 will naturally tend to bring the turbopump towards one or the other of these stable regimes.

La turbopompe 1 comprend de plus un générateur magnétique de couple 5, configuré de manière à sélectivement appliquer un couple sur l'arbre d'entrainement 2.
Le générateur magnétique de couple 5 comprend une partie fixe 51, par exemple des pôles magnétiques disposés sur le stator de la turbopompe 1, et une partie mobile 52 montée sur l'arbre d'entrainement 2, par exemple des pôles magnétiques ou des portions comprenant un matériau ferromagnétique.The turbopump 1 further comprises a magnetic torque generator 5, configured to selectively apply a torque to the drive shaft 2.
The magnetic torque generator 5 comprises a fixed part 51, for example magnetic poles disposed on the stator of the turbopump 1, and a movable part 52 mounted on the drive shaft 2, for example magnetic poles or portions comprising a ferromagnetic material.

Le générateur magnétique de couple 5 est associé à une commande 6, configurée de manière à piloter le couple appliqué par le générateur magnétique de couple 5 sur l'arbre d'entrainement 2. La commande 6 comprend typiquement un capteur de position de l'arbre d'entrainement 2, afin de piloter le couple appliqué par le générateur magnétique de couple 5 en fonction notamment de la position de l'arbre d'entrainement 2.The magnetic torque generator 5 is associated with a control 6, configured to control the torque applied by the magnetic torque generator 5 on the drive shaft 2. The control 6 typically comprises a shaft position sensor drive 2, in order to control the torque applied by the magnetic torque generator 5 in particular according to the position of the drive shaft 2.

Dans le mode de réalisation représenté sur la figure 2, le générateur magnétique de couple 5 est disposé entre deux paliers 4 de l'arbre d'entrainement 2. Un tel positionnement n'est pas limitatif ; le générateur magnétique de couple 5 peut également être disposé à une extrémité de l'arbre d'entrainement 2, ou selon toute autre configuration adaptée. Les pôles magnétiques de la partie fixe 51 et de la partie mobile 52 peuvent par exemple être répartis selon plusieurs portions distinctes de l'arbre d'entrainement 2.In the embodiment shown on the figure 2 , the magnetic torque generator 5 is disposed between two bearings 4 of the drive shaft 2. Such positioning is not limiting; the magnetic torque generator 5 may also be disposed at one end of the drive shaft 2, or in any other suitable configuration. The magnetic poles of the fixed portion 51 and the movable portion 52 may for example be distributed along several distinct portions of the drive shaft 2.

Dans le mode de réalisation représenté sur la figure 2, le générateur magnétique de couple 5 est à flux radial. Un autre mode de réalisation non représenté est le générateur de couple à flux axial.In the embodiment shown on the figure 2 , the magnetic torque generator 5 is radial flow. Another embodiment not shown is the axial flow torque generator.

On distingue deux modes de fonctionnement du générateur magnétique de couple 5, selon la nature de ses parties fixe 51 et mobile 52.There are two modes of operation of the magnetic torque generator 5, depending on the nature of its fixed parts 51 and mobile 52.

Dans le cas où la partie fixe 51 et la partie mobile sont des pôles magnétiques, le générateur magnétique de couple 5 présente un fonctionnement similaire à celui d'une machine synchrone.
Dans le cas où la partie fixe 51 du générateur magnétique de couple 5 comprend des pôles magnétiques, alors que la partie mobile 52 du générateur magnétique de couple 5 comprend des portions comprenant un matériau ferromagnétique, le générateur magnétique de couple 5 présente un fonctionnement similaire à celui d'une machine asynchrone.In the case where the fixed part 51 and the moving part are magnetic poles, the magnetic torque generator 5 has a similar operation to that of a synchronous machine.
In the case where the fixed portion 51 of the magnetic torque generator 5 comprises magnetic poles, while the movable portion 52 of the magnetic torque generator 5 comprises portions comprising a ferromagnetic material, the magnetic torque generator 5 has a similar operation to that of an asynchronous machine.

Quel que soit le mode de fonctionnement, le contrôle de la phase et de l'intensité du courant du générateur magnétique de couple 5 permet de contrôler le champ tournant généré, et ainsi de contrôler le couple produit par le générateur magnétique de couple 5 sur l'arbre d'entrainement 2.
Le couple ainsi produit par le générateur magnétique de couple 5 sur l'arbre d'entrainement 2 peut être piloté de manière fine, permettant ainsi une maîtrise du couple résultant sur l'arbre d'entrainement 2.Whatever the mode of operation, the control of the phase and the intensity of the current of the magnetic torque generator 5 makes it possible to control the rotating field generated, and thus to control the torque produced by the magnetic torque generator 5 on the drive shaft 2.
The torque thus produced by the magnetic torque generator 5 on the drive shaft 2 can be driven in a fine manner, thus allowing control of the resulting torque on the drive shaft 2.

Le générateur magnétique de couple 5 permet ainsi de générer un couple sur l'arbre d'entrainement 2 de la turbopompe, et permet donc de modifier ses modes de fonctionnement.The magnetic torque generator 5 thus makes it possible to generate a torque on the drive shaft 2 of the turbopump, and thus makes it possible to modify its modes of operation.

Plus précisément, en fonction du champ tournant généré et du couple produit, ainsi que de la vitesse de rotation de l'arbre d'entrainement 2, le générateur magnétique de couple 5 produit un couple pouvant être un couple moteur ou un couple résistant sur l'arbre d'entrainement 2.More precisely, as a function of the rotational field generated and the torque produced, as well as the speed of rotation of the drive shaft 2, the magnetic torque generator 5 produces a torque that can be a driving torque or a torque that is resistant to torque. drive shaft 2.

Ainsi, le générateur magnétique de couple 5 permet d'obtenir un régime stable additionnel de la turbopompe entre le régime nominal R3 et le régime d'attente R2 déjà décrits en référence à la figure 1.Thus, the magnetic torque generator 5 makes it possible to obtain an additional stable speed of the turbopump between the rated speed R3 and the waiting speed R2 already described with reference to FIG. figure 1 .

On représente sur la figure 3 les modes de fonctionnement obtenus pour la turbopompe 1 au moyen d'un tel système, en indiquant la poussée selon l'horizontal X et la vitesse de rotation en tours par minute selon l'axe vertical Y.We represent on the figure 3 the operating modes obtained for the turbopump 1 by means of such a system, indicating the thrust along the horizontal X and the speed of rotation in revolutions per minute along the vertical axis Y.

Comme déjà décrit en référence à la figure 1, on représente sur la figure 3 plusieurs régimes stables, à savoir :

  • R1 : A l'arrêt,
  • R2 : En attente, dans lequel la turbopompe est en fonctionnement mais sa vitesse de rotation et le couple appliqué sont minimisés,
  • R3 : En régime nominal, à vitesse de rotation et couple élevés.
As already described with reference to figure 1 , we represent on the figure 3 several stable regimes, namely:
  • R1: When stopped,
  • R2: Waiting, in which the turbopump is operating but its rotational speed and applied torque are minimized,
  • R3: Nominal speed, high speed and high torque.

On représente de plus sur la figure 3 un régime R4, intermédiaire entre le régime d'attente R2 et le régime nominal R3, et pouvant être obtenu grâce à l'action du générateur magnétique de couple 5.We represent more on the figure 3 a regime R4, intermediate between the waiting mode R2 and the nominal speed R3, and obtainable by the action of the magnetic torque generator 5.

Un tel régime R4 stable est obtenu en appliquant un couple moteur ou résistant sur l'arbre d'entrainement 2 de la turbopompe 1, lorsque cette dernière est en régime d'attente R2 ou en régime nominal R3.Such a stable R4 regime is obtained by applying a motor or resistant torque on the drive shaft 2 of the turbopump 1, when the latter is in the R2 waiting mode or rated R3.

Lorsque la turbopompe 1 est en régime d'attente R2, le générateur magnétique de couple 5 peut appliquer un couple moteur sur l'arbre d'entrainement 2, afin d'augmenter la vitesse de rotation et le couple résultant sur l'arbre d'entrainement 2 de la turbopompe 1, et donc réaliser une montée en régime de la turbopompe 1.
A l'inverse, lorsque la turbopompe 1 est en régime nominal R3, le générateur magnétique de couple 5 peut appliquer un couple résistant sur l'arbre d'entrainement 2, afin d'en diminuer la vitesse de rotation et le couple résultant sur l'arbre d'entrainement 2 de la turbopompe 1, et donc réaliser une baisse en régime de la turbopompe 1.When the turbopump 1 is in standby mode R2, the magnetic torque generator 5 can apply a driving torque on the drive shaft 2, in order to increase the rotational speed and the resulting torque on the shaft of the engine. drive 2 of the turbopump 1, and thus achieve a revving of the turbopump 1.
Conversely, when the turbopump 1 is in rated speed R3, the magnetic torque generator 5 can apply a resistive torque on the drive shaft 2, in order to reduce the speed of rotation and the resulting torque on the rotor. drive shaft 2 of the turbopump 1, and thus achieve a steady state of the turbopump 1.

Ainsi, le générateur magnétique de couple 5 permet, via l'application d'un couple moteur ou résistant sur l'arbre d'entrainement 2, d'atteindre des points de fonctionnement stables entre le régime d'attente R2 et le régime nominal R3, en contrôlant le couple résultant sur l'arbre d'entrainement 2.
On obtient ainsi un domaine de stabilité additionnel pour la turbomachine, repéré par la région R4 sur la figure 3.Thus, the magnetic torque generator 5 allows, via the application of a driving torque or resistant on the drive shaft 2, to reach stable operating points between the waiting mode R2 and the nominal speed R3, by controlling the resulting torque on the drive shaft 2.
This gives an additional stability range for the turbomachine, identified by the region R4 on the figure 3 .

L'application d'un couple moteur ou résistant sur l'arbre d'entrainement 2 permet de plus d'améliorer la transition entre le régime nominal R3 et le régime d'attente R2, soit en amorçant la montée en régime pour passer du régime d'attente R2 au régime nominal R3 et également pour améliorer le démarrage de la turbopompe pour passer d'un état d'arrêt R1 au régime d'attente R2, soit en dissipant l'énergie apportée communément par la turbine et ainsi en réalisant une baisse du régime nominal R3 vers le régime d'attente R2.The application of a driving or resistant torque on the drive shaft 2 furthermore makes it possible to improve the transition between the nominal speed R3 and the waiting mode R2, ie by starting the revving to go from the R2 waiting at rated speed R3 and also to improve the start of the turbopump to go from a shutdown state R1 to R2 waiting mode, or by dissipating the energy commonly provided by the turbine and thus achieving a lowering the nominal speed R3 towards the waiting mode R2.

Par ailleurs, le générateur magnétique de couple 5 permet de réaliser un entrainement de l'arbre d'entrainement à des vitesses de rotation très faibles et contrôlées, ce qui permet de réaliser une circulation d'ergols cryogéniques dans la turbopompe afin de réaliser sa mise en froid, c'est-à-dire son refroidissement graduel de la température ambiante aux températures cryogéniques de fonctionnement.
Une telle circulation maîtrisée d'ergols permet de réduire la consommation d'ergols par rapport aux procédés conventionnels de mise en froid.Furthermore, the magnetic torque generator 5 makes it possible to drive the drive shaft at very low and controlled rotational speeds, which makes it possible to circulate cryogenic propellants in the turbopump in order to realize its implementation. in cold, that is to say its gradual cooling of the ambient temperature to cryogenic operating temperatures.
Such a controlled circulation of propellants makes it possible to reduce propellant consumption compared with conventional cold-setting processes.

En outre, le contrôle précis du couple au démarrage permet de préciser la conception des séquences de démarrage de la turbopompe, notamment en s'affranchissant d'imprécisions dues notamment aux régimes à faible vitesse des turbopompes conventionnelles dont les propriétés ne sont pas connues de manière suffisamment précise dans les phases de conception.In addition, the precise control of the start-up torque makes it possible to specify the design of the start-up sequences of the turbopump, in particular by overcoming inaccuracies due in particular to the low-speed regimes of conventional turbopumps whose properties are not well known. sufficiently precise in the design phases.

Le générateur magnétique de couple 5 permet également de réaliser une fonction de maintien de l'arbre d'entrainement 2, en formant une butée axiale ou un palier pour l'arbre d'entrainement 2.
Pour ce faire, le générateur magnétique de couple 5 est configuré de manière à générer une force de répulsion entre le stator et le rotor, ou plus précisément entre la partie fixe 51 et la partie mobile 52 du générateur magnétique de couple 5. Un tel champ répulsif est typiquement réalisé en générant un flux stator opposé au flux rotor, par exemple en générant un champ tournant à une vitesse très élevée, ou en réalisant une configuration passive dans laquelle les pôles Nord/Sud du rotor sont en permanence en phase avec les pôles Sud/Nord(respectivement) du stator.The magnetic torque generator 5 also makes it possible to perform a function of holding the drive shaft 2, forming an axial stop or a bearing for the drive shaft 2.
To do this, the magnetic torque generator 5 is configured to generate a repulsive force between the stator and the rotor, or more precisely between the fixed portion 51 and the movable portion 52 of the magnetic torque generator 5. Such a field repellent is typically achieved by generating a stator flux opposite the rotor flux, for example by generating a rotating field at a very high speed, or by performing a passive configuration in which the North / South poles of the rotor are permanently in phase with the poles South / North (respectively) of the stator.

La force de répulsion ainsi générée permet d'éviter le contact entre l'arbre d'entrainement 2 et le stator, ce qui est avantageux à la fois en termes de rendement et d'usure.The repulsion force thus generated makes it possible to avoid contact between the drive shaft 2 and the stator, which is advantageous both in terms of efficiency and wear.

On note par ailleurs que le générateur magnétique de couple 5 est un système réversible, et que la rotation de l'arbre d'entrainement 2 peut ainsi être exploitée afin de générer de l'électricité dès lors qu'un convertisseur électrique associé est également réversible, par exemple lorsque la turbopompe 1 est dans un régime stable tel que le régime nominal R3, pour lequel il n'est pas nécessaire d'appliquer un couple via le générateur magnétique de couple 5.Note also that the magnetic torque generator 5 is a reversible system, and that the rotation of the drive shaft 2 can thus be exploited to generate electricity when an associated electrical converter is also reversible , for example when the turbopump 1 is in a steady state such as the rated speed R3, for which it is not necessary to apply a torque via the magnetic torque generator 5.

Les différentes fonctions réalisées grâce au générateur magnétique de couple 5 peuvent être regroupées. On peut par exemple en fonction du régime de la turbopompe 1, réaliser une fonction d'application de couple sur l'arbre d'entrainement 2 ou de récupération d'énergie afin de générer de l'électricité.The various functions performed by the magnetic torque generator 5 can be grouped together. For example, depending on the speed of the turbopump 1, perform a torque application function on the drive shaft 2 or energy recovery to generate electricity.

Claims (7)

Turbopompe (1) d'engin spatial comprenant - un ensemble fixe définissant un stator de la turbopompe (1), et - un ensemble mobile définissant un rotor de la turbopompe, comprenant un arbre d'entrainement (2), - un générateur magnétique de couple (5) configuré de manière à sélectivement appliquer un couple sur l'arbre d'entrainement (2), la turbopompe (1) présentant deux régimes stables de fonctionnement (R2, R3) disjoints,
caractérisée en ce qu'elle comprend en outre une unité de commande (6), configurée de manière à piloter le générateur magnétique de couple (5) afin d'appliquer sélectivement un couple moteur ou résistant sur l'arbre d'entrainement (2) en fonction d'une commande appliquée, de manière à définir un régime intermédiaire stable (R3) entre lesdits deux régimes stables de fonctionnement (R2, R3) disjoints.Turbopomp (1) of spacecraft comprising a fixed assembly defining a stator of the turbopump (1), and a mobile assembly defining a rotor of the turbopump, comprising a drive shaft (2), a magnetic torque generator (5) configured to selectively apply torque to the drive shaft (2), the turbopump (1) having two stable operating modes (R2, R3) disjoint,
characterized in that it further comprises a control unit (6), configured to drive the magnetic torque generator (5) to selectively apply a driving or resistance torque to the drive shaft (2) according to a command applied, so as to define a stable intermediate regime (R3) between said two stable operating modes (R2, R3) disjoint. Turbopompe (1) selon la revendication 1, dans laquelle le générateur magnétique de couple (5) comprend des pôles magnétiques (51, 52) disposés sur le stator et sur le rotor de la turbopompe, de manière à former une machine synchrone.Turbopump (1) according to claim 1, wherein the magnetic torque generator (5) comprises magnetic poles (51, 52) arranged on the stator and on the rotor of the turbopump, so as to form a synchronous machine. Turbopompe (1) selon la revendication 1, dans laquelle le générateur magnétique de couple comprend des pôles magnétiques (51) disposés sur le stator, et un matériau ferromagnétique (52) disposé sur le rotor, adapté pour permettre la génération d'un champ induit, de manière à former une machine asynchrone.Turbopump (1) according to claim 1, wherein the magnetic torque generator comprises magnetic poles (51) disposed on the stator, and a ferromagnetic material (52) disposed on the rotor, adapted to allow the generation of an induced field , so as to form an asynchronous machine. Turbopompe (1) selon l'une des revendications 1 à 3, dans laquelle le générateur magnétique de couple (5) est configuré de manière à générer un flux radial.Turbopump (1) according to one of claims 1 to 3, wherein the magnetic torque generator (5) is configured to generate a radial flow. Turbopompe (1) selon l'une des revendications 1 à 4, dans laquelle le générateur magnétique de couple (5) est configuré de manière à générer un flux axial.Turbopump (1) according to one of claims 1 to 4, wherein the magnetic torque generator (5) is configured to generate an axial flow. Turbopompe (1) selon l'une des revendications 1 à 5, dans laquelle le générateur magnétique de couple (5) est configuré de manière à établir un champ magnétique de maintien de l'arbre d'entrainement, configuré de manière à former une butée limitant le déplacement axial de l'arbre d'entrainement (2).Turbopump (1) according to one of claims 1 to 5, wherein the magnetic torque generator (5) is configured to establish a magnetic field for holding the drive shaft, configured to form a stop limiting the axial displacement of the drive shaft (2). Turbopompe (1) selon l'une des revendications 1 à 6, dans laquelle le générateur magnétique de couple (5) est configuré de manière à réaliser un maintien radial de l'arbre d'entrainement (2), et ainsi maintenir l'arbre d'entrainement (2) espacé du stator de la turbopompe (1).Turbopump (1) according to one of claims 1 to 6, wherein the magnetic torque generator (5) is configured to perform a radial holding of the drive shaft (2), and thus maintain the shaft drive (2) spaced from the stator of the turbopump (1).
EP16167333.0A 2015-04-28 2016-04-27 Improved control system for a turbo pump Active EP3088741B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1500900A FR3035690B1 (en) 2015-04-28 2015-04-28 IMPROVED CONTROL SYSTEM FOR A PUMP

Publications (2)

Publication Number Publication Date
EP3088741A1 true EP3088741A1 (en) 2016-11-02
EP3088741B1 EP3088741B1 (en) 2019-12-25

Family

ID=54707813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16167333.0A Active EP3088741B1 (en) 2015-04-28 2016-04-27 Improved control system for a turbo pump

Country Status (2)

Country Link
EP (1) EP3088741B1 (en)
FR (1) FR3035690B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1099107A (en) * 1954-02-03 1955-08-30 Alsthom Cgee Method of adjusting a variable flow rate of a fluid set in motion or under pressure by a pump or other machine
US5906098A (en) * 1996-07-16 1999-05-25 Turbodyne Systems, Inc. Motor-generator assisted turbocharging systems for use with internal combustion engines and control method therefor
CA2394819A1 (en) * 2002-08-09 2004-02-09 Douglas Wilbert Paul Smith Combined pump generator and turbine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014143A1 (en) * 2012-12-21 2014-06-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electromotive water pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1099107A (en) * 1954-02-03 1955-08-30 Alsthom Cgee Method of adjusting a variable flow rate of a fluid set in motion or under pressure by a pump or other machine
US5906098A (en) * 1996-07-16 1999-05-25 Turbodyne Systems, Inc. Motor-generator assisted turbocharging systems for use with internal combustion engines and control method therefor
CA2394819A1 (en) * 2002-08-09 2004-02-09 Douglas Wilbert Paul Smith Combined pump generator and turbine

Also Published As

Publication number Publication date
FR3035690B1 (en) 2019-12-20
FR3035690A1 (en) 2016-11-04
EP3088741B1 (en) 2019-12-25

Similar Documents

Publication Publication Date Title
EP2494184B1 (en) Starter-generator of a turbomachine and control method therefor
FR2842565A1 (en) INTEGRATED STARTER-GENERATOR FOR TURBOMACHINE
CA2621711C (en) Process for drawing back-up power from a jet turbine engine and turbine engine equipped to implement such a process
FR2815683A1 (en) MAGNETIC TYPE FAN CLUTCH DEVICE
FR2719261A1 (en) Hydrodynamic device serving as a heating generator for a motor vehicle.
WO2009118298A1 (en) Turbine engine including a reversible electric machine
EP2092634B1 (en) Method and device for electrically powering at least one induction machine on board an aircraft
FR2512507A1 (en) AXIAL MOLECULAR PUMP USING A MAGNETIC BEARING
FR2682429A1 (en) EXHAUST GAS TURBOCHARGER FOR AN INTERNAL COMBUSTION ENGINE.
FR3020838B1 (en) ENGINE GAS TURBINE ENGINE WITH LOW PRESSURE BODY
WO2020169497A1 (en) Electric propulsion unit for an aircraft and method for using such a propulsion unit
FR2972488A1 (en) THERMAL ENGINE LUBRICATING SYSTEM COMPRISING A VARIABLE CYLINDER OIL PUMP
FR2890685A1 (en) High pressure turbine rotor blade tip clearance control procedure uses electric heaters in outer housing to increase clearance in acceleration phase
EP3027863B1 (en) Electromagnetic actuator for controlling the waste gate of a turbocharger
EP3088741B1 (en) Improved control system for a turbo pump
EP4179185B1 (en) Start-up method for an aircraft engine
FR3097907A1 (en) Active control of the high pressure compressor cooling flow
FR3085408A1 (en) IMPROVEMENTS IN TURBOMACHINES
WO2003007460A1 (en) Alternator-starter for motor vehicle with mechanical static converter
EP4252336B1 (en) Pump actuating device, and associated pumping system, aircraft and fuel supply method
KR101965062B1 (en) Turbo Charger apparatus
FR3123694A1 (en) ELECTROMAGNETIC PUMP FOR TURBOMACHINE
FR3062420A1 (en) DEVICE FOR DRIVING A FUEL PUMP FOR TURBOMACHINE
FR3152291A1 (en) REDUCTION AND DUAL-DIRECTION TORQUE INJECTION SYSTEM IN A TURBOMACHINE
WO2024121495A1 (en) Turbine engine comprising an immobilising magnetic coupling device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20160427

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SAFRAN AIRCRAFT ENGINES

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ARIANEGROUP SAS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190719

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602016026684

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1217419

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200326

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200425

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602016026684

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1217419

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20200928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200427

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602016026684

Country of ref document: DE

Representative=s name: CBDL PATENTANWAELTE GBR, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602016026684

Country of ref document: DE

Representative=s name: CBDL PATENTANWAELTE EGBR, DE

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230612

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250422

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20250424

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20250425

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20260306

Year of fee payment: 11