WO2020121342A1 - Procédé d'étalonnage de machines électriques - Google Patents

Procédé d'étalonnage de machines électriques Download PDF

Info

Publication number
WO2020121342A1
WO2020121342A1 PCT/IT2018/000156 IT2018000156W WO2020121342A1 WO 2020121342 A1 WO2020121342 A1 WO 2020121342A1 IT 2018000156 W IT2018000156 W IT 2018000156W WO 2020121342 A1 WO2020121342 A1 WO 2020121342A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
position sensor
angular position
magnetic field
detected
Prior art date
Application number
PCT/IT2018/000156
Other languages
English (en)
Inventor
Denny CHIONO
Original Assignee
Mavel Edt S.R.L.
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 Mavel Edt S.R.L. filed Critical Mavel Edt S.R.L.
Priority to CN201880100689.1A priority Critical patent/CN113424433A/zh
Priority to EP18845369.0A priority patent/EP3895304A1/fr
Priority to PCT/IT2018/000156 priority patent/WO2020121342A1/fr
Publication of WO2020121342A1 publication Critical patent/WO2020121342A1/fr

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
    • H02P6/18—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G01D18/008—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00 with calibration coefficients stored in memory
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/08—Reluctance motors
    • 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
    • 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
    • H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
    • H02P2203/05—Determination of the rotor position by using two different methods and/or motor models
    • 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 present invention refers to a process for calibrating electric machines, in particular synchronous electric machines with permanent magnets .
  • the invention refers to a process for calibrating electric motors, preferably synchronous motors assisted by permanent magnets, for measuring and correcting the error of a position sensor installed on the motor, in order to allow performing its optimum driving by an inverter connected thereto.
  • Electric machines in particular electric motors, are known, and it is known to use inverters connected to the motors to control their operation.
  • a control parameter of synchronous electric motors assisted by permanent magnets, used by the inverter, is the instantaneous angular position of the magnetic poles of the rotor.
  • a sensor comprising a magnetic part fastened to the rotor shaft to measure its angular position, and a fixed part connected to a frame of the electric motor.
  • Object of the present invention is providing a process for calibrating electric machines which allows, when producing the motor, performing an error measure between the rotor position, detected, for example by a position sensor, and the instantaneous angular position of the rotor, in particular the instantaneous angular position of the magnetic poles of the rotor, to correct the reading of the position sensor and use the correct reading data for an optimum driving of the electric machine .
  • Figure 1 shows a perspective view of a component of a device for calibrating and diagnosing synchronous electric machines usable in implementing the process of the invention
  • Figure 2 shows a block diagram of the device for calibrating and diagnosing for synchronous electric machines usable in implementing the process of the invention.
  • a position sensor 11 having a magnetic part fastened to the rotor shaft to measure its angular position
  • a storage unit 14 in which data will be stored that are computed during the production of the electric machine using the process of the invention, and usable for the error correction between the position of the rotor detected by the position sensor 11 and the actual angular position of the rotor, as will be explained below in more detail
  • a microprocessor 15 connected to the position sensor 11 and to the storage unit 14 and configured to store in the storage unit 14 all information detected by the position sensor 11 and the data computed during the production of the electric machine using the process of the invention, to manage and process all information stored in the storage unit 14 and/or detected by the position sensor 11 and to communicate the processed data to an inverter 20 connected to the electric machine to drive it through analogue communication lines 21 and/or digital communication lines 22, for example composed of a communication can bus
  • the process for calibrating electric motors of the invention can also be used with other position sensors of a known type, and the microprocessor 15 and the storage unit 14 can, for example, be arranged on the inverter 20 connected to the electric machine.
  • the electric machine is a synchronous electric motor assisted by permanent magnets, for example a synchronous reluctance electric motor.
  • the known position sensor 11 is a magnetic sensor comprising: a rotary element 16 connected to the rotor of the electric machine and comprising a magnet; a fixed element 18, preferably comprising a plurality of magnetic sensors with Hall effect of a known type.
  • the known device 10 for calibrating and diagnosing electric machines is configured to be installed on the electric machine, preferably on the synchronous electric motor assisted by permanent magnets, and comprises in a preferred way a case inside which position sensor 11, storage unit 14 and microprocessor 15 are contained.
  • the process for calibrating electric machines of the invention is implemented upon producing the electric machine, preferably a synchronous electric motor assisted by permanent magnets, to measure the angular position of the rotor; such data are compared with the value measured by the position sensor 11, to detect its error; the error value is then stored by the microprocessor 15 in the storage unit 14 and is used to correct the measure detected by the sensor through an offset software in order to perform an optimum driving of the motor coupled therewith, using the correct value of the angular position of the rotor.
  • the electric machine preferably a synchronous electric motor assisted by permanent magnets
  • the measure of the angular position of the rotor performed in the production line of the electric machine is preceded by a mechanical pre-aligning operation between the sensor magnet and the rotor, to align the magnetic field of the sensor with the magnetic field of the rotor .
  • the process for calibrating electric machines according to the invention comprises the following steps :
  • a third step wherein the inverter is switched off and the electric machine is left idly rotating; a fourth step, performed when the rotor reaches the predefined rotation speed w 0 , in which the angular position of the rotor is detected by- measuring the position of the magnetic field of the rotor, to compare it with the measure of the angular position of the rotor detected by the position sensor 11, performed by measuring, in a known way, the position of the magnetic field of the position sensor 11;
  • a fifth step wherein the difference is computed between the value of the angular position of the rotor, detected by measuring the position of its magnetic field, and the value of the angular position of the rotor detected by measuring the position of the magnetic field of the position sensor 11, to obtain the offset data to be stored; a sixth step wherein the offset data computed in the fifth step are stored in the storage unit 14.
  • the measure of the difference between the angular position of the magnetic field of the rotor, and the angular position of the rotor detected by the position sensor 11, performed in the fifth step of the process according to the invention is performed by measuring the electric phase displacement angle between the magnetic field of the rotor and the magnetic field of the position sensor 11, depending on the reading of the value of the Back-ElectroMotive Force (Back-EMF or BEMF) , performed for example by the microprocessor of the inverter, measured at the predefined rotation speed w 0 by running the motor idly.
  • Back-EMF or BEMF Back-ElectroMotive Force
  • the BEMF is strictly linked to the EMF depending on the type of connection between the motor phases (Star - Triangle) .
  • the thereby computed position of the magnetic field of the rotor is then compared with the position of the magnetic field of the position sensor 11 detected at the same instant.
  • the value of the difference between the electric angle of the due magnetic fields is saved in the storage unit 14 and used as offset data to correctly drive the electric machine .
  • the process for calibrating electric machines of the invention allows, when producing the motor, performing a measure of an error measure between the position of the rotor detected by the position sensor associated thereto, and the instantaneous angular position of the magnetic poles of the rotor, in order to perform an optimum driving of the electric machine, using the actual value of the angular position of the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

La présente invention concerne un procédé d'étalonnage de machines électriques comprenant les étapes consistant à : mettre sous tension un onduleur connecté à la machine électrique, pour faire tourner le rotor ; entraîner la machine électrique jusqu'à ce que le rotor atteigne une vitesse de rotation (ω1) supérieure à une vitesse de rotation prédéfinie (ωo) ; mettre hors tension l'onduleur et laisser la machine électrique en rotation libre ; détecter la position angulaire du rotor en mesurant la position du champ magnétique du rotor, pour la comparer à la mesure de la position angulaire du rotor détectée par un capteur de position (11) ; calculer la différence entre la valeur de la position angulaire du rotor, détectée en mesurant la position de son champ magnétique, et la valeur de la position angulaire du rotor détectée en mesurant la position du champ magnétique du capteur de position (11), pour obtenir les données de décalage à stocker ; stocker les données de décalage calculées à la cinquième étape dans une unité de stockage (14).
PCT/IT2018/000156 2018-12-13 2018-12-13 Procédé d'étalonnage de machines électriques WO2020121342A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880100689.1A CN113424433A (zh) 2018-12-13 2018-12-13 校准电动机器的方法
EP18845369.0A EP3895304A1 (fr) 2018-12-13 2018-12-13 Procédé d'étalonnage de machines électriques
PCT/IT2018/000156 WO2020121342A1 (fr) 2018-12-13 2018-12-13 Procédé d'étalonnage de machines électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2018/000156 WO2020121342A1 (fr) 2018-12-13 2018-12-13 Procédé d'étalonnage de machines électriques

Publications (1)

Publication Number Publication Date
WO2020121342A1 true WO2020121342A1 (fr) 2020-06-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2018/000156 WO2020121342A1 (fr) 2018-12-13 2018-12-13 Procédé d'étalonnage de machines électriques

Country Status (3)

Country Link
EP (1) EP3895304A1 (fr)
CN (1) CN113424433A (fr)
WO (1) WO2020121342A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050275361A1 (en) * 2004-06-11 2005-12-15 International Rectifier Corporation Hall sensor alignment for BLDC motor

Family Cites Families (12)

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CN1728534A (zh) * 2004-06-11 2006-02-01 国际整流器公司 对无刷直流电机的霍尔传感器的定位
GB0416738D0 (en) * 2004-07-27 2004-09-01 Switched Reluctance Drives Ltd Rotor position detection in an electrical machine
DE102008006983A1 (de) * 2008-01-31 2009-08-13 Siemens Aktiengesellschaft Verfahren zur Ermittlung eines Korrekturwertes für die Winkellage des Rotors eines elektrisch kommutierten reversierbaren Synchron-Motors
JP4900738B2 (ja) * 2009-06-30 2012-03-21 アイシン・エィ・ダブリュ株式会社 電動機駆動制御装置
DE102009028170A1 (de) * 2009-07-31 2011-02-10 Robert Bosch Gmbh Kommutierter elektrischer Antrieb und Verfahren zur Ansteuerung eines kommutierten Elektromotors
CN103178681B (zh) * 2011-12-24 2015-07-29 大洋电机新动力科技有限公司 一种带有转子位置传感器初始安装偏差信息的电机实体及其初始安装偏差信息测量方法
DE102012202772A1 (de) * 2012-02-23 2013-08-29 Robert Bosch Gmbh Kalibrierung und Überwachung eines Winkelmesssystems für elektrische Maschinen
FR2990088B1 (fr) * 2012-04-30 2014-05-09 Renault Sa Procede de determination du decalage angulaire entre le rotor et le stator d'une machine electrique d'un vehicule automobile
FR3017961B1 (fr) * 2014-02-24 2017-11-03 Lohr Electromecanique Procede de mesure du viellissement d'aimants permanents d'une machine synchrone equipee d'un capteur de position angulaire
CN106849777A (zh) * 2017-03-27 2017-06-13 苏州汇川联合动力系统有限公司 一种永磁同步电机旋变零点校正方法以及系统
CN107834934B (zh) * 2017-12-01 2020-05-08 重庆长安汽车股份有限公司 电动汽车及其旋转变压器初始位置自动校正方法和系统
CN108667375B (zh) * 2018-05-22 2021-03-02 奇瑞汽车股份有限公司 一种电机零位自动校正控制方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050275361A1 (en) * 2004-06-11 2005-12-15 International Rectifier Corporation Hall sensor alignment for BLDC motor

Also Published As

Publication number Publication date
EP3895304A1 (fr) 2021-10-20
CN113424433A (zh) 2021-09-21

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