EP4526990A1 - Dispositif de contrôle pour une machine tournante triphasée synchrone à aimants permanents - Google Patents
Dispositif de contrôle pour une machine tournante triphasée synchrone à aimants permanentsInfo
- Publication number
- EP4526990A1 EP4526990A1 EP23730548.7A EP23730548A EP4526990A1 EP 4526990 A1 EP4526990 A1 EP 4526990A1 EP 23730548 A EP23730548 A EP 23730548A EP 4526990 A1 EP4526990 A1 EP 4526990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine
- module
- input
- phase
- voltages
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/17—Circuit arrangements for detecting position and for generating speed information
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/30—Aircraft characterised by electric power plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D31/00—Power plant control systems; Arrangement of power plant control systems in aircraft
- B64D31/16—Power plant control systems; Arrangement of power plant control systems in aircraft for electric power plants
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/22—Current control, e.g. using a current control loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
Definitions
- the invention relates to the field of control systems for three-phase synchronous rotating machines with permanent magnets such as brushless motors, in particular synchronous motors with permanent magnets controlled by a control with at least three phases such as known under the Anglo-Saxon acronym PMSM and relates more particularly to a method and a device for controlling such a motor without position or speed sensors.
- permanent magnets such as brushless motors
- PMSM Anglo-Saxon acronym
- Sensorless controls are particularly effective in steady state, but have weaknesses in certain operating modes: a. - In the free rotation phase, also called freewheeling, a sensorless control cannot ensure the estimation of the angular position of the rotor because there is no voltage applied to the synchronous machine by the inverter, b. - In the low speed or start-up phase, sensorless algorithms have weaknesses with a risk of instability and erroneous information.
- the present disclosure concerns a device for controlling the rotation of a synchronous rotating machine with permanent magnets, or brushless motor, and a method for estimating the angular position of the rotor of a such a machine offering availability of the position information of this rotor on all the operating modes of the machine and of the inverter controlling this machine, this without loss of information at transitions between modes.
- the control device according to the present invention then behaves like a device provided with a virtual position sensor.
- the present disclosure proposes more precisely a three-phase synchronous rotating machine with permanent magnets, provided with a control device comprising a computer for controlling an inverter for controlling the phases of said machine, for which said computer comprises a speed and angular position estimator module of the rotor of said machine provided at its input with an input selector module, receiving digital voltage data, said input selector module being controlled by a command (SEL) of operating mode of said machine, said input selector module being configured to select: a. - data inputs representative of the three-phase control voltages Va_cmd, Vb_cmd, Vc_cmd of phases A, B, C of the inverter, in powered operating mode of said machine; b.
- This device with an input selector makes it possible to maintain the same algorithm for estimating the electrical position during the 3 operating modes and to thus avoid the activation and convergence of a new estimator during transitions between modes.
- the data representative of measured voltages are advantageously data of the two-phase voltage type Va1 and vpi of a two-phase model in a stator frame calculated by means of a second Clarke transform from the measured voltages Va_mes, Vb_mes, Vc_mes.
- the speed and angular position estimator module may include a phase-locked loop function to obtain convergence of the calculations.
- This module may also include: a. an inverse Park matrix sub-module P(-6) receiving as input, in addition to the voltage data from the selector module, current data la and ip calculated from the currents la, Ib, le of the phases of said machine at by means of a third Clarke transform, said inverse Park matrix submodule providing voltages V5, Vy and currents I5,ly in a rotating rotor reference frame of estimation 5, y, b. a counter-electromotive force estimator sub-module FEM EST giving counter-electromotive force values E5, Ey in said rotating estimation reference frame, c.
- a speed estimator sub-module SP EST having as output data an estimated speed, looped back to the counter-electromotive force estimator sub-module FEM EST, and an angle estimator sub-module ANGLE EST, said speed and angle estimator module having as output data an estimated speed SE and an estimated angle AE of the rotor of said machine.
- the estimated angle AE is distributed in a first mathematical function module for calculating, on the one hand, a correction current lylfb from the currents la, Ib, le measured at the output of the inverter, said current lylfb being received on a second input of a first comparator receiving on its first input a calculated setpoint current Iy1 c , said first comparator being arranged at the input of a first current control module ly whose output is found at the input of a second mathematical function module for calculating the control voltages Va_cmd, Vb_cmd, Vc_cmd of the inverter and, on the other hand, a correction current 151 fb from the currents la, Ib, le measured at the output of the inverter , said current 151 fb being received on a second input of a third comparator receiving on its first input a calculated setpoint current 151 c , said third comparator being arranged at the input of a second current control module whose output is found
- the estimated speed SE can be transmitted to a second input of a second comparator, to the input of a speed controller module, said second comparator having as first input a set speed SC and said speed controller module being connected to an operating point calculation module providing said setpoint currents Iy1 c and 151 c .
- the voltage data Va2 and V02 preferably come from the second mathematical function module.
- Said data representative of control voltages are advantageously data of the two-phase voltage type Va2 and V02 of a two-phase model in a stator reference corresponding to a first Clarke transform of the three-phase control voltages Va_cmd, Vb_cmd, Vc_cmd.
- the present disclosure further proposes a method for estimating the electrical position of a synchronous three-phase rotating machine with magnets permanent, controlled by a control device described above which includes a selection of voltage input data depending on the operating mode of said machine between: a. the control voltages of said machine as applied by a control inverter of said machine in motor operation; b. the phase-phase voltages of the stator measured at the output of the inverter in freewheeling mode of the inverter, said voltages being representative of the counter-electromotive force of said machine; vs.
- said selection providing voltage data for an algorithm for calculating the estimated angle AE and estimated speed SE of said machine at the level of said speed and angular position estimator module of said machine.
- the system further comprises, in the machine control software, an algorithm for determining the position of the rotor according to the method of the present disclosure to generate the machine control voltages at the level of the inverter in the operating modes of the machine, including a high impedance mode according to which the inverter does not impose voltage on said phases and a short-circuit mode for which the inverter short-circuits at least some of the phases of the machine.
- the solution of the present disclosure is thus to select the voltage inputs at the level of the software or physical selection module 1 according to the operating mode of the inverter defined with the following logic:
- control voltages are used (Va_cmd, Vb_cmd & Vc_cmd).
- preprocessing is carried out on the three-phase voltages to transform them into two-phase voltages by Clarke transform software modules, also called Concordia transforms, T32, transform 3 for transform the voltages Va_mes, Vb_mes and Vc_mes into two-phase voltages Va1, Vpi in a reference linked to the stator, and transform 2 for the voltages Va_cmd, Vb_cmd, Vc_cmd to give voltages Va2, V02 in said reference linked to the stator. It is then these two-phase voltages which are used at the level of the selection module 1 to provide the speed and angular position estimator module 10 with voltages Va, vp making it possible to calculate the estimated speed and the estimated angle of the motor.
- Clarke transform software modules also called Concordia transforms, T32
- transform 3 for transform the voltages Va_mes, Vb_mes and Vc_mes into two-phase voltages Va1, Vpi in a reference linked to the stator
- transform 2 for the voltages Va_cmd,
- the speed and angular position estimator module 10 firstly comprises an inverse Park matrix module 5 symbolized P(-0) which transforms the voltages Va, V0 and currents la, I0 of the stator reference into voltages V5, Vy and currents I5, ly in a reference linked to the rotor.
- phase lock comprising an estimated speed calculation module SE whose output is reintroduced into the electromotive force estimation module.
- the computer 100 includes a speed and angular position estimator module 10 of the synchronous machine provided at its input with an input selector module 1, receiving digital voltage data. Said input selector module is controlled by the engine operating mode selection command SEL, for example from a propulsion engine management computer of an aircraft or other.
- the input selector module 1 receives: a. data inputs of voltages Va2 and V02 of a two-phase model in a stator reference corresponding to a first Clarke transform 2 of the calculated control voltages Va_cmd, Vb_cmd, Vc_cmd three-phase phases A, B, C of the inverter 30, in powered operating mode of said machine; b. data inputs of voltages Va1 and vpi of the two-phase model in the stator reference calculated by means of a second Clarke 3 transform from the measured voltages Va_mes, Vb_mes, Vc_mes three-phase phases A, B, C of said machine, in free rotation mode of the motor, c. data inputs of voltages VaO and vpo of the two-phase model forced to zero, in short-circuiting mode of the phases of said machine;
- the data corresponding to the operating mode of the motor are transmitted as input data to the speed and angular position estimator module 10.
- the data Va2 and V02 of the two-phase model in the stator reference and corresponding to the calculated control voltages come from the mathematical transformation module 105 which also provides the voltages Va_cmd, Vb_cmd, Vc_cmd.
- the speed and angular position estimator module 10 includes a phase-locked loop function called PLL.
- This estimator module includes an inverse Park matrix sub-module P(-0) 5 which receives as input, in addition to the voltage data coming from the selector module, current data la and ip calculated from the currents la, Ib, the phases of said machine by means of a third Clarke transform 4.
- This inverse Park matrix submodule providing voltages V5, Vy and currents I5, ly in a rotating estimation reference 5 - y linked to the rotor of the synchronous machine.
- the estimator module 10 comprises electromotive force estimator sub-module FCEM EST 6 which calculates counter-electromotive force values E5, Ey in said rotating estimation reference frame.
- the estimator module 10 then includes a speed estimator sub-module SP EST 7 having as output data an estimated speed SE.
- the estimated speed SE is reintroduced as correction data into the electromotive force estimator sub-module FEM EST 6.
- the estimator module 10 includes an angle estimator sub-module ANGLE EST 8.
- the output data from the speed and angle estimator module 10 are an estimated speed SE and an estimated angle AE of the rotor of said machine.
- the estimated angle AE is used to calculate a correction current 151 fb from the currents la, Ib, le measured at the output of the inverter and to calculate the currents la and I0 in a first mathematical function module T32 + rotational transform Math Trans 106.
- This correction current 151 fb and a set current Iy1 c are compared at a first comparator 103. The result of the comparison is transmitted as input to a first current control module ly CONT 104.
- the output of the latter and the output of the second module current control 151 CONT 107 are used as input to a mathematical transformation module 105 of type T32 + rotational transform also having the estimated angle AE as input and which will generate the three-phase control voltages Va_cmd, Vb_cmd, Vc_cmd and their two-phase transforms Va2 and V02.
- the two-phase voltages Va2 and V02 are transmitted to the selection module 1.
- the estimated speed SE from the speed and angular position estimator module 10 is transmitted to a second input of a second comparator 101 at the input of a speed controller module 102 which is transmitted to an OPF (operating point) module function in English) 109 for calculating the operating point which also receives the HDVC_M direct voltage measurement from the inverter power line.
- This module provides the reference currents 151 c and Iy1 c.
- the calculated setpoint current Iy1 c is transmitted to a first input of the first comparator 103 seen previously and the calculated current 151 c is transmitted to a third comparator 108.
- the Math trans transform module 106 From the estimated angle AE and the phase currents, the Math trans transform module 106 also provides the correction current 151 fb of the rotor two-phase reference which will be compared with the set current 151 c at level d a third comparator 108 whose output is transmitted to the input of the second current control module I5 CONT. 107.
- the calculations and transformations are preferably carried out by software in the calculator 100, for example of the microcontroller type which To do this, it traditionally comprises analog and digital inputs and outputs, analog/digital and possibly digital/analog converters, one or more digital outputs, for example for the control signals of the converter 30, of the program memory, read-only or reprogrammable memory, data memory including RAM, a clock and the various components necessary for its operation.
- software in the calculator 100 for example of the microcontroller type which To do this, it traditionally comprises analog and digital inputs and outputs, analog/digital and possibly digital/analog converters, one or more digital outputs, for example for the control signals of the converter 30, of the program memory, read-only or reprogrammable memory, data memory including RAM, a clock and the various components necessary for its operation.
- the present disclosure further relates to a method for estimating the electrical position of a three-phase synchronous rotating machine with permanent magnets 40 implemented in the computer 100 and which includes a selection of voltage input data as a function of the mode of operation of said machine between: a. The control voltages of said machine as applied by the inverter 30 for controlling said machine in engine operation; b. The phase-neutral voltages of the stator measured at the output of the inverter 30 in freewheeling mode of the inverter, said voltages being representative of the counter-electromotive force of said machine; vs. Zero voltages in the operating mode of short-circuiting the phases of the machine 40 by the inverter 30 in the braking mode of the machine; said selection providing voltage data for an algorithm for calculating the estimated angle AE and estimated speed SE of said machine.
- This method is implemented in the computer 100 which constitutes, with its program for implementing the method, the device of the present disclosure.
- the algorithm for calculating the estimated angle AE and the estimated speed SE can in particular be a phase-locked loop type algorithm known as PLL.
- said estimated angle AE and said estimated speed SE are used as correction data for calculations of rotational speed of the synchronous machine and calculations of currents and voltages for controlling a power inverter. of said machine.
- the method of the present disclosure makes it possible in particular to estimate the electrical position (Pos_elec_est) of the motor or three-phase permanent magnet rotating machine (PMSM) from its Counter-Electromotive Force (FCEM), in free rotation mode, with a method of extracting the electrical position from the FCEM (BEMF based position estimator in English).
- FCEM Counter-Electromotive Force
- Such a method is known for example in the document N. Matsui and Shigyo. “Brushless DC motor without position and speed sensors,” IEEE Trans, on Ind. Applications, vol. 28, no. 1, pp. 120-127, January/February 1992.
- FCEM Counter-Electromotive Force
- Figure 3 corresponds to a variant for which the motor is controlled in torque and in this case the device comprises a torque/current transformation module 110 at the input of the operating point calculation module 109 which also receives the measurement of DC voltage measurement of the inverter supply line to calculate the target currents.
- the invention can be applied in particular to synchronous machine systems used in traction or propulsion for land, water or air vehicles with electric propulsion or for systems with static synchronous machines such as motors. driving industrial devices.
- the invention is not limited to the examples described above, only by way of example, but it encompasses all the variants that those skilled in the art could consider in the context of the protection sought, the calculator which can for example be made in several separate parts each equipped with a dedicated microcontroller, or be integrated into the inverter.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2204708A FR3135845B1 (fr) | 2022-05-18 | 2022-05-18 | Dispositif de contrôle pour une machine tournante triphasée synchrone à aimants permanents |
| PCT/FR2023/050708 WO2023222980A1 (fr) | 2022-05-18 | 2023-05-17 | Dispositif de contrôle pour une machine tournante triphasée synchrone à aimants permanents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4526990A1 true EP4526990A1 (fr) | 2025-03-26 |
Family
ID=82942647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23730548.7A Pending EP4526990A1 (fr) | 2022-05-18 | 2023-05-17 | Dispositif de contrôle pour une machine tournante triphasée synchrone à aimants permanents |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250150011A1 (fr) |
| EP (1) | EP4526990A1 (fr) |
| CN (1) | CN119278578A (fr) |
| FR (1) | FR3135845B1 (fr) |
| WO (1) | WO2023222980A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9160264B2 (en) * | 2007-11-16 | 2015-10-13 | Hamilton Sundstrand Corporation | Initial rotor position detection and start-up system for a dynamoelectric machine |
| JP5534935B2 (ja) * | 2010-05-20 | 2014-07-02 | 株式会社東芝 | 回転センサレス制御装置 |
| JP5866763B2 (ja) * | 2011-02-02 | 2016-02-17 | ダイキン工業株式会社 | モータ駆動制御装置 |
| CN105071736B (zh) * | 2015-08-11 | 2018-05-15 | 泰州职业技术学院 | 一种风机用永磁同步电机无传感器转子位置检测方法 |
| SE544612C2 (en) * | 2019-05-07 | 2022-09-20 | Bombardier Transp Gmbh | A method of determining the position of a freely rotating rotor in a permanent magnet motor, and a control ciruit and a system therefore |
| US11404983B2 (en) * | 2020-01-07 | 2022-08-02 | Infineon Technologies Austria Ag | Catch spin method for permanent magnet synchronous motor with sensorless field oriented control |
-
2022
- 2022-05-18 FR FR2204708A patent/FR3135845B1/fr active Active
-
2023
- 2023-05-17 US US18/865,640 patent/US20250150011A1/en active Pending
- 2023-05-17 CN CN202380043521.2A patent/CN119278578A/zh active Pending
- 2023-05-17 EP EP23730548.7A patent/EP4526990A1/fr active Pending
- 2023-05-17 WO PCT/FR2023/050708 patent/WO2023222980A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3135845A1 (fr) | 2023-11-24 |
| CN119278578A (zh) | 2025-01-07 |
| WO2023222980A1 (fr) | 2023-11-23 |
| US20250150011A1 (en) | 2025-05-08 |
| FR3135845B1 (fr) | 2026-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2246973B1 (fr) | Procédé de détermination de la position du vecteur de flux d'un moteur | |
| FR2911698A1 (fr) | Dispositif de commande d'actionneur electromecanique. | |
| FR2855677A1 (fr) | Circuit de commande a modulation en largeur d'impulsions pour machine electrique multi mode et machine electrique multi mode equipee d'un tel circuit de commande | |
| FR2901647A1 (fr) | Dispositif et procede de commande de puissance pour une machine dynamo electrique du type a enroulement de champ | |
| FR2843659A1 (fr) | Procede d'utilisation d'un dispositif d'observation de parametres en boucle ouverte pour la commande d'un moteur a aimant permanent | |
| EP2997654B1 (fr) | Procédé d'estimation de la position angulaire du rotor d'une machine électrique tournante polyphasée et application à la commande d'un onduleur polyphasé pour une telle machine | |
| FR3062762A1 (fr) | Procede d'estimation de la position angulaire d’un rotor d’un systeme d’entrainement electrique | |
| US11881796B2 (en) | Permanent magnet electric machine control | |
| EP3607649B1 (fr) | Machine électrique haute puissance thermoregulée | |
| EP4216424B1 (fr) | Procédé et système de commande d'une machine électrique pilotée par un onduleur pourvu de plusieurs bras de commutation avec deux methodes d'asservissement | |
| EP4173130A1 (fr) | Procede et systeme de commande d'une machine electrique synchrone | |
| EP4466785B1 (fr) | Dispositif et procédé de commande d'une machine synchrone et d'estimation de la position rotor, du démarrage à une faible vitesse prédéterminée | |
| EP1972051B1 (fr) | Procédé de détermination de la position d'un rotor d'une machine synchrone muni d'au moins un enroulement d'excitation | |
| EP4526990A1 (fr) | Dispositif de contrôle pour une machine tournante triphasée synchrone à aimants permanents | |
| EP3166220A2 (fr) | Dispositif de limitation dynamique et procede de limitation dynamique par un tel dispositif | |
| FR3115425A1 (fr) | Procédé et système de contrôle d’une machine électrique déterminant des consignes de courant optimales | |
| WO2025125735A1 (fr) | Procédé de calcul d'un angle du vecteur flux d'inducteur, et dispositif correspondant | |
| EP4454119B1 (fr) | Procede et systeme de commande d'une machine electrique pilotee par un onduleur pourvu de plusieurs bras de commutation | |
| EP3175544B1 (fr) | Procédé et dispositif de commande du couple électromagnétique d'un groupe motopropulseur | |
| FR3128598A1 (fr) | Procédé de calage automatique d'un capteur de position angulaire | |
| WO2025114109A1 (fr) | Procede de commande d'une machine electrique au moyen d'un controleur avec un regulateur proportionnel et un regulateur proportionnel integral | |
| FR3160463A1 (fr) | Méthode de détermination de la position angulaire d’un rotor de machine électrique | |
| EP3382887A1 (fr) | Procede de demarrage pour une machine synchrone, dispositif de commande, machine synchrone et compresseur associes | |
| FR3166504A1 (fr) | Procédé et dispositif de contrôle d’un moteur électrique à courant continu sans balais, notamment un moteur d’entrainement d’un générateur d’un flux d’air | |
| EP2992602B1 (fr) | Procede de verification du fonctionnement d'un groupe motopropulseur equipant un vehicule automobile et systeme correspondant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| 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 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20241118 |
|
| 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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20260225 |