WO2003084049A1 - System and method for controlling a permanent magnet electric motor - Google Patents
System and method for controlling a permanent magnet electric motor Download PDFInfo
- Publication number
- WO2003084049A1 WO2003084049A1 PCT/CA2003/000486 CA0300486W WO03084049A1 WO 2003084049 A1 WO2003084049 A1 WO 2003084049A1 CA 0300486 W CA0300486 W CA 0300486W WO 03084049 A1 WO03084049 A1 WO 03084049A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- permanent magnet
- electric motor
- magnet electric
- controlling
- current
- Prior art date
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
-
- 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
- H02P21/06—Rotor flux based control involving the use of rotor position or rotor speed sensors
-
- 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 relates to permanent magnet electric motors. More precisely, the present invention is related to a system and a method for controlling a permanent magnet electric motor.
- characteristics of the permanent magnet motor such as the phase, the frequency and the amplitude of the electric motive force (“emf) voltage generated by the rotation of the motor rotor, need to be determined to yield a voltage to be applied to the motor terminals.
- emf electric motive force
- a possible method involves estimating the emf of the permanent magnet motor.
- this method requires a high computation speed, which may result costly.
- the characteristics of the motor are dependent on the ambient environement, such a control method can be complex.
- An object of the present invention is therefore to provide an improved controller system and method for a permanent magnet electric motor.
- a system for controlling a permanent magnet electric motor comprising a motor controller and a power stage, the motor controller using phase currents of the permanent magnet electric motor to generate voltage- controlling signals in relation to both changes in speed and torque of the permanent magnet electric motor, which are fed back to the permanent magnet electric motor via the power stage.
- a method for controlling a permanent magnet electric motor comprising determining a current of each phase of the permanent magnet electric motor; obtaining voltage controlling signals in relation to both changes in speed and torque of the permanent magnet electric motor; and feeding the voltage controlling signal back to the permanent magnet electric motor.
- a circuit for controlling a permanent magnet three-phases electric motor provided with a rotor and a stator, comprising a rotator allowing rotation of current signals of the phases of the permanent magnet electric motor from a stationary frame to two decoupled current components in a rotor synchronous frame along a direct axis (I d ) and a quadrature axis (l q ) respectively; a proportional and integral operator for deriving a voltage (V q ) along the quadrature axis and a voltage (V d ) along the direct axis; a rotator allowing rotating the voltages V q and V d back from the rotor synchronous frame to the stationary frame to yield terminal voltages V a , V and V c of the permanent magnet electric motor.
- a method for controlling a permanent magnet three-phases electric motor provided with a rotor and a stator comprising rotating current signals of the phases of the permanent magnet electric motor from a stationary frame to two decoupled current components in a rotor synchronous frame along a direct axis (l d ) and a quadrature axis (l q ) respectively; deriving a voltage (V q ) along the quadrature axis therefrom; deriving a voltage (V d ) along the direct axis; rotating the voltages V q and V d back from the rotor synchronous frame to the stationary frame to yield terminal voltages V a , V b and V c of the permanent magnet electric motor.
- a method for controlling a permanent magnet electric motor having three-phases each supporting a current i a , i b and i c respectively comprising determining the currents i a , i b and i c ; rotating the currents i a , i and i c by an angle - ⁇ n to yield currents Id and l q ; computing a current torque of the permanent magnet electric motor; computing a current rotating angle ⁇ n+ ⁇ ; computing a voltage output V q ; computing a voltage output V d ; rotating the voltages Vq and V d by the rotating angle ⁇ n+1 to yield three voltage controlling signals V a , V b and V c ; and applying the voltage controlling signals V a , Vb and V c to the permanent magnet electric motor.
- Figure 1 is a simplified diagram of a motor controller system according to an embodiment of a first aspect of the present invention.
- Figure 2 is a flowchart of a method for controlling an electric motor according to an embodiment of a second aspect of the present invention.
- the present invention provides a system and method for controlling a three-phased electric motor, by monitoring the terminal voltages thereof in relation to both changes in speed and torque of the motor.
- the present invention provides that the phase currents of a permanent magnet electric motor are first rotated from a stationary frame into two decoupled current components in a rotor synchronous frame, which enable to derive a voltage along a quadrature axis and a voltage along a direct axis thereof, before rotating back the quadrature and direct axis voltages from the rotor synchronous frame to the stationary frame to yield the motor terminal voltages.
- the system 10 shown in Figure 1 comprises a permanent magnet motor, referred to hereinafter as PM motor 12; a power stage 14; and a motor controller 16.
- PM motor 12 a permanent magnet motor
- power stage 14 a power stage 14
- motor controller 16 a motor controller
- the PM motor 12 is a three-phase electric motor provided with a rotor and a stator (not shown), each one of the phases carrying a current, i a , i b and i c , respectively. These phases currents are sensed and used by the park vector rotator unit 16 to generate three voltage-controlling signals V a , V b and V c , which are then supplied to the power stage 14.
- the power stage 14 may be of the type provided by Semikron, in particular the SKiiPACKTM 342 GD 120-314 CTV for example.
- the angular speed " ⁇ " of the motor is controlled by a user by setting a value representing the speed of the PM motor 12 into the system 10.
- the user chooses a reference current value "I * ", normally set at 0, but other values may be selected.
- the motor controller 16 is in the form of a park vector rotator unit.
- the park vector rotator unit 16 generates two continuously rotating angles having instantaneous values ⁇ n+ ⁇ and - ⁇ n , wherein the negative sign represents an opposite direction of rotation, the subscript "n+1" labels a current computing angle, and the subscript "n” labels the previous computing angle.
- the main steps of a method for controlling a permanent magnet electric motor using the system 10 according to a second aspect of the invention will now be described in reference to Figure 2.
- a first step 100 the three currents i a , i b and i c , from the three phases of the PM motor 12 are determined by the use of standard current sensors.
- step (200) the three currents i a , i and i c are processed in an inverse park vector rotator 18, which rotates them by an angle - ⁇ n , to output two currents Id and l q .
- step 300 the two currents I d and l q are used to compute a current torque "T" of the PM motor 12, which is in turn used to compute the current rotating angle ⁇ n + ⁇ (step 400).
- the two currents Id and l q are used to compute two voltage outputs V q and V d (steps 500 and 600).
- the voltage outputs V q and V d are then rotated in a park vector rotator 20 by the rotating angle ⁇ n + ⁇ to yield three voltage controlling signals V a , V b and V c (step 700).
- phase currents i a , i b and i c are directed through lines 12a, 12b and 12c to a first inverse park vector rotator 18, which rotates them by the angle - ⁇ n , to output the two currents I d and l q , according to the following relations on the d-q axis fixed on the rotor axis:
- Id 2/3 X [i a X COS( ⁇ n) + ib X COS( ⁇ n +120°) + i c X COS( ⁇ n -120°)] ( 2)
- the I d and l q rotated values are further used to generate a first voltage output V q which takes into account an error between the preset value I* and I d , according to the following equation on the d-q axis fixed on the rotor axis:
- V q PI (I * - Id) + k 3 x l q ( 5) where k 3 is a constant, "PI" refers to a proportional and integral operator, defined as follows:
- the I d and l q rotated values are also used to generate the second voltage output V d , according to the following equation on the d-q axis fixed on the rotor axis:
- V d k 5 x l d + k 4 x l q x ⁇ (7)
- V a V d x cos( ⁇ n+ ⁇ ) + V q x sin( ⁇ n + ⁇ ) o>
- V b V d x cos( ⁇ n+ ⁇ +120°) + V q x sin( ⁇ n+ ⁇ +120°) (10)
- V c V d x cos( ⁇ n+ r120°) + V q x sin( ⁇ ⁇ + ⁇ -120°) (11)
- the values k-i to k 5 are constants that the user sets, when designing the system 10, based on a number of parameters, including the sampling rate of the computer to be used, condition of the power drive, sensitivity of the current sensors, the characteristics of the motor etc.
- the present invention provides for a system and a method whereby the motor terminal voltages are self-adapting. More specifically, three current signals are first rotated from a stationary frame to two decoupled current components in a rotor synchronous frame, along a direct axis (I d ) and a quadrature axis (l q ) respectively. Then, on the first hand, a voltage (V q ) along the quadrature axis is derived therefrom, by applying a proportional and integral operator on the direct axis current component added with a product of a constant and the current components along the quadrature axis (see equation 5).
- a voltage (V d ) along the direct axis is derived, as a product of the direct axis current component added to a product of the speed of the motor by the quadrature current component (see equation 7).
- the quadrature and direct axis voltages (V q and V d ) thus computed are rotated back from the rotor synchronous frame to the stationary frame to yield the motor terminal voltages (V a , V and V c , see equations 9-11).
- the present invention provides a circuit for controlling a permanent magnet three-phases electric motor provided with a rotor and a stator, comprising a rotator allowing rotation of current signals of the phases of the permanent magnet electric motor from a stationary frame to two decoupled current components in a rotor synchronous frame along a direct axis (Id) and a quadrature axis (l q ) respectively; a proportional and integral operator for deriving a voltage (V q ) along the quadrature axis and a voltage (Vd) along the direct axis; a rotator allowing rotating the voltages V q and V d back from the rotor synchronous frame to the stationary frame to yield terminal voltages V a , V b and V c of the permanent magnet electric motor.
- the method and system of the present invention allows controlling a permanent magnet motor without resorting to position sensors or characteristics of the permanent magnet motor such as the emf, which are liable to depend on the environment, thereby adaptable to environmental conditions.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0308711-5A BR0308711A (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
JP2003581341A JP2005522171A (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
KR1020047015668A KR100775221B1 (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
CA002480730A CA2480730A1 (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
ES03709523T ES2405929T3 (en) | 2002-04-02 | 2003-04-02 | System and procedure to control a permanent magnet electric motor |
AU2003213954A AU2003213954B2 (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
US10/510,030 US7135828B2 (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
EP03709523A EP1493225B1 (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002379732A CA2379732A1 (en) | 2002-04-02 | 2002-04-02 | System and method for controlling an electric motor |
CA2,379,732 | 2002-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003084049A1 true WO2003084049A1 (en) | 2003-10-09 |
Family
ID=28458230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA2003/000486 WO2003084049A1 (en) | 2002-04-02 | 2003-04-02 | System and method for controlling a permanent magnet electric motor |
Country Status (9)
Country | Link |
---|---|
US (1) | US7135828B2 (en) |
EP (1) | EP1493225B1 (en) |
JP (1) | JP2005522171A (en) |
KR (1) | KR100775221B1 (en) |
CN (1) | CN100391096C (en) |
BR (1) | BR0308711A (en) |
CA (1) | CA2379732A1 (en) |
ES (1) | ES2405929T3 (en) |
WO (1) | WO2003084049A1 (en) |
Cited By (3)
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WO2005099076A2 (en) | 2004-03-31 | 2005-10-20 | Honeywell International Inc. | Instantaneous power floating frame controller |
WO2008040718A1 (en) | 2006-10-04 | 2008-04-10 | Siemens Aktiengesellschaft | Device and method for the online position initialization of an actuating drive, particularly of a piezoelectric ring motor |
WO2020109185A1 (en) * | 2018-11-30 | 2020-06-04 | IFP Energies Nouvelles | Control method and associated control system |
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JP4120504B2 (en) * | 2003-07-30 | 2008-07-16 | トヨタ自動車株式会社 | Vehicle and vehicle control method |
JP4223880B2 (en) * | 2003-07-31 | 2009-02-12 | トヨタ自動車株式会社 | Motor drive device |
US8156757B2 (en) * | 2006-10-06 | 2012-04-17 | Aff-Mcquay Inc. | High capacity chiller compressor |
US7622877B2 (en) * | 2007-03-13 | 2009-11-24 | Gm Global Technology Operations, Inc. | Method and system for controlling permanent magnet AC machines |
CN102016326B (en) * | 2008-03-13 | 2013-09-11 | Aaf-麦克维尔公司 | High capacity chiller compressor |
US20090277400A1 (en) * | 2008-05-06 | 2009-11-12 | Ronald David Conry | Rankine cycle heat recovery methods and devices |
US8336323B2 (en) | 2008-10-03 | 2012-12-25 | Johnson Controls Technology Company | Variable speed drive with pulse-width modulated speed control |
FR3005539B1 (en) * | 2013-05-13 | 2016-09-16 | Valeo Equip Electr Moteur | METHOD FOR ESTIMATING THE ANGULAR POSITION OF THE ROTOR OF A POLYPHASE ELECTRIC ROTARY MACHINE AND APPLICATION TO THE CONTROL OF A POLYPHASE-INVERTER FOR SUCH A MACHINE |
CN104218864B (en) * | 2014-08-19 | 2016-10-05 | 河海大学 | A kind of frequency domain method of double-fed fan motor unit rotor side controller parameter identification |
KR20160064261A (en) | 2014-11-27 | 2016-06-08 | 현대자동차주식회사 | Diagnostic method for shifting actuator of transmission |
CN104852656A (en) * | 2015-04-28 | 2015-08-19 | 卧龙电气集团股份有限公司 | Air-conditioner brushless DC motor control method based on MCU vector control |
CN114000947A (en) * | 2021-10-29 | 2022-02-01 | 福建晋江天然气发电有限公司 | Gas generating set rotor shaft voltage on-line monitoring device |
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- 2002-04-02 CA CA002379732A patent/CA2379732A1/en not_active Abandoned
-
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- 2003-04-02 BR BR0308711-5A patent/BR0308711A/en not_active IP Right Cessation
- 2003-04-02 ES ES03709523T patent/ES2405929T3/en not_active Expired - Lifetime
- 2003-04-02 JP JP2003581341A patent/JP2005522171A/en active Pending
- 2003-04-02 EP EP03709523A patent/EP1493225B1/en not_active Expired - Lifetime
- 2003-04-02 KR KR1020047015668A patent/KR100775221B1/en not_active IP Right Cessation
- 2003-04-02 US US10/510,030 patent/US7135828B2/en not_active Expired - Lifetime
- 2003-04-02 WO PCT/CA2003/000486 patent/WO2003084049A1/en active IP Right Grant
- 2003-04-02 CN CNB038078805A patent/CN100391096C/en not_active Expired - Fee Related
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099076A2 (en) | 2004-03-31 | 2005-10-20 | Honeywell International Inc. | Instantaneous power floating frame controller |
WO2005099076A3 (en) * | 2004-03-31 | 2006-01-12 | Honeywell Int Inc | Instantaneous power floating frame controller |
US7075264B2 (en) | 2004-03-31 | 2006-07-11 | Honeywell International Inc. | Instantaneous power floating frame controller |
WO2008040718A1 (en) | 2006-10-04 | 2008-04-10 | Siemens Aktiengesellschaft | Device and method for the online position initialization of an actuating drive, particularly of a piezoelectric ring motor |
WO2020109185A1 (en) * | 2018-11-30 | 2020-06-04 | IFP Energies Nouvelles | Control method and associated control system |
FR3089368A1 (en) * | 2018-11-30 | 2020-06-05 | IFP Energies Nouvelles | Method for controlling a three-phase rotary machine and associated control system |
US11581837B2 (en) | 2018-11-30 | 2023-02-14 | IFP Energies Nouvelles | Control method and associated control system |
Also Published As
Publication number | Publication date |
---|---|
AU2003213954A1 (en) | 2003-10-13 |
ES2405929T3 (en) | 2013-06-04 |
US20050174089A1 (en) | 2005-08-11 |
CN1647360A (en) | 2005-07-27 |
KR20040111469A (en) | 2004-12-31 |
EP1493225B1 (en) | 2012-10-31 |
BR0308711A (en) | 2005-01-04 |
US7135828B2 (en) | 2006-11-14 |
KR100775221B1 (en) | 2007-11-12 |
CA2379732A1 (en) | 2003-10-02 |
CN100391096C (en) | 2008-05-28 |
JP2005522171A (en) | 2005-07-21 |
EP1493225A1 (en) | 2005-01-05 |
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