CN104953919A - Precisely adjusting system and method for magnetic pole code of permanent magnet synchronous motor - Google Patents
Precisely adjusting system and method for magnetic pole code of permanent magnet synchronous motor Download PDFInfo
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- CN104953919A CN104953919A CN201510450074.XA CN201510450074A CN104953919A CN 104953919 A CN104953919 A CN 104953919A CN 201510450074 A CN201510450074 A CN 201510450074A CN 104953919 A CN104953919 A CN 104953919A
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- magnetic pole
- synchronous motor
- axis current
- permagnetic synchronous
- pole code
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Abstract
The invention discloses a precisely adjusting system and method for the magnetic pole code of a permanent magnet synchronous motor. The method comprises the following steps: under the conditions that a control system already knows the magnetic pole code of the synchronous motor approximately and the motor can operate, by the application of a control method of d-q coordinate conversion of the synchronous motor, under the condition of the same operation load, precise magnetic pole code difference values are obtained by giving two groups of different Id (d-axis current) commands and detecting corresponding feedback values of two groups of Iq (d-axis current) through a special calculation formula, and finally the precise magnetic pole code difference values are automatically stacked in the magnetic pole code data of the system. The method has the advantages that the consumed time is short, the magnetic pole code is precise, and the effect is better.
Description
[technical field]
The present invention relates to elevator technology field, especially a kind of permagnetic synchronous motor magnetic pole code accurate adjustment system and method.
[background technology]
Synchronous machine magnetic pole code is in the past the self-setting function study gained by control system, its deviation likely reaches ± about 30 ° (but motor also can run), general field adjustable personnel are just with the final magnetic pole code that this magnetic pole code is motor, but its result can cause that the output current of motor and control system becomes large, heat condition becomes serious, the lost of life of motor and control system; Some experienced commissioning staffs can the set point of manually slight modifications magnetic pole code repeatedly, by measuring current of electric, the magnetic pole code that searching current value is corresponding time minimum, thus using this magnetic pole code as final magnetic pole code, but this method is consuming time quite long, and needing special testing current instrument, effect neither be best, urgently improves.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of permagnetic synchronous motor magnetic pole code accurate adjustment systems approach, when control system has probably known the magnetic pole code of motor, when motor can run, the present invention utilizes the control method of the d-q coordinates translation of synchronous machine, when identical running load, by given two groups of different Id (d shaft current) instructions, detect the value of feedback of corresponding two groups of Iq (q shaft current) again, just can be obtained accurate magnetic pole code deviate by special computing formula, finally automatically be added to again in the magnetic pole code data of system, technical scheme is as follows:
A kind of permagnetic synchronous motor magnetic pole code accurate adjustment system, comprising:
Control system, for setting the direct-axis current (I of permagnetic synchronous motor
d) value, and drive and describedly determine permagnetic synchronous motor and operate with certain speed;
Current sensor, for detecting the value of feedback of the actual current of described permagnetic synchronous motor;
Modular converter, obtains the quadrature axis current (I of described permagnetic synchronous motor by the control algolithm of d-q coordinates translation for the value of feedback of the actual current by described permagnetic synchronous motor
q) value of feedback;
Treatment system, by two groups of direct-axis current (I
d) value and two groups of quadrature axis current (I
q) value of feedback, thus calculate the magnetic pole code angle of deviation of motor, in the original magnetic pole code data of the system that is finally automatically added to, to motor finally, magnetic pole code data the most accurately.
A kind of permagnetic synchronous motor magnetic pole code accurate adjustment method, comprises the following steps:
First one group of direct-axis current (I is set
d1) instruction, and drive permagnetic synchronous motor with the running of certain speed, then detect direct-axis current (I
d1) value of feedback, then obtained the quadrature axis current (I of permagnetic synchronous motor by the control algolithm of d-q coordinates translation
q1) value of feedback and record, set another group direct-axis current (I again
d2) instruction, and drive permagnetic synchronous motor with the running of identical speed, then detect direct-axis current (I
d2) value of feedback, then obtained another group quadrature axis current (I of permagnetic synchronous motor by the control algolithm of d-q coordinates translation
q2) value of feedback record, then pass through formula:
I
q1·cosθ+|I
d1|·sinθ＝I
q2·cosθ+|I
d2|·sinθ
Derive
Thus calculate the magnetic pole code angle of deviation of motor;
Finally automatically be added in the original magnetic pole code data of system;
Like this, just obtain motor finally, magnetic pole code data the most accurately.
Preferably, permagnetic synchronous motor quadrature axis current (I
q) use its value of feedback.
Preferably, permagnetic synchronous motor direct-axis current (I
d) use its command value.
Optionally, permagnetic synchronous motor quadrature axis current (I
q) use its command value.
Optionally, permagnetic synchronous motor direct-axis current (I
d) use its value of feedback.
Optionally, direct-axis current (I
d1) or direct-axis current (I
d2) one of them is zero.
In sum, advantage of the present invention is: 1, can accurate adjustment magnetic pole code automatically; 2, compared with time inaccurate with magnetic pole code, the electric current of motor and control system, temperature rise, life-span all can improve; 3, greatly save the time of the magnetic pole code adjustment of engineering site commissioning staff, improve operating efficiency.
[accompanying drawing explanation]
Fig. 1 is the system framework figure described in the embodiment of the present invention;
Fig. 2 is the d-q axes of coordinates Current calculation relation schematic diagram described in the embodiment of the present invention;
In mark: I
trq: motor torque electric current; I
m: current of electric; I
d: motor d-axis (d axle) electric current; I
q: motor quadrature axis (q axle) electric current; θ: the motor pole code angle of deviation.
[embodiment]
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
A kind of permagnetic synchronous motor magnetic pole code accurate adjustment system, comprising:
Control system, for setting the direct-axis current (I of permagnetic synchronous motor
d) value, and drive and describedly determine permagnetic synchronous motor and operate with certain speed;
Current sensor, for detecting the actual current (I of described permagnetic synchronous motor
m) value of feedback;
Modular converter, obtains the quadrature axis current (I of described permagnetic synchronous motor by the control algolithm of d-q coordinates translation for the value of feedback of the actual current by described permagnetic synchronous motor
q) value of feedback;
Treatment system, by two groups of direct-axis current (I
d) value and two groups of quadrature axis current (I
q) value of feedback, thus calculate the magnetic pole code angle of deviation of motor, in the original magnetic pole code data of the system that is finally automatically added to, to motor finally, magnetic pole code data the most accurately.
Permagnetic synchronous motor magnetic pole code accurate adjustment system principle provided by the invention is as follows: when control system probably known the magnetic pole code of motor, motor can run when, the present invention utilizes the control method of the d-q coordinates translation of synchronous machine, when identical running load, by given two groups of different Id (d shaft current) instructions, detect the value of feedback of corresponding two groups of Iq (q shaft current) again, just can be obtained accurate magnetic pole code deviate by special computing formula, finally automatically be added in the magnetic pole code data of system again.
Permagnetic synchronous motor magnetic pole code accurate adjustment method provided by the invention is as follows:
First one group of direct-axis current (I is set by control system
d1) instruction, and drive motors is with the running of certain speed, is then detected the value of feedback of electric current by current sensor, then is obtained the quadrature axis current (I of motor by the control algolithm of d-q coordinates translation
q1) value of feedback and record, set another group direct-axis current (I by control system again
d2) instruction, and drive motors is with the running of identical speed, is then detected the value of feedback of electric current by current sensor, then obtain another group quadrature axis current (I of motor by the control algolithm of d-q coordinates translation
q2) value of feedback record, then pass through formula:
I
q1·cosθ+|I
d1|·sinθ＝I
q2·cosθ+|I
d2|·sinθ
Derive
Thus calculate the magnetic pole code angle of deviation of motor;
Finally automatically be added in the original magnetic pole code data of system;
Like this, just obtain motor finally, magnetic pole code data the most accurately.
Like this, efficiently solve permagnetic synchronous motor magnetic pole code inaccurate, and the problem causing current of electric bigger than normal, by the automatic accurate adjustment magnetic pole code of the mode of self study, remove from and need staff repeatedly to arrange and the step of testing in the past, and the electric current of motor and control system can be used, temperature rise declined, the life-span is extended; Achieve short, magnetic pole code consuming time accurate, effect is better.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a permagnetic synchronous motor magnetic pole code accurate adjustment system, is characterized in that comprising:
Control system, for setting the direct-axis current (I of permagnetic synchronous motor
d) value, and drive and describedly determine permagnetic synchronous motor and operate with certain speed;
Current sensor, for detecting the value of feedback of the actual current of described permagnetic synchronous motor;
Modular converter, obtains the quadrature axis current (I of described permagnetic synchronous motor by the control algolithm of d-q coordinates translation for the value of feedback of the actual current by described permagnetic synchronous motor
q) value of feedback;
Treatment system, by two groups of direct-axis current (I
d) value and two groups of quadrature axis current (I
q) value of feedback, thus calculate the magnetic pole code angle of deviation of motor, in the original magnetic pole code data of the system that is finally automatically added to, to motor finally, magnetic pole code data the most accurately.
2. a permagnetic synchronous motor magnetic pole code accurate adjustment method, is characterized in that comprising the following steps:
First one group of direct-axis current (I is set
d1) instruction, and drive permagnetic synchronous motor with the running of certain speed, then detect direct-axis current (I
d1) value of feedback, then obtained the quadrature axis current (I of permagnetic synchronous motor by the control algolithm of d-q coordinates translation
q1) value of feedback and record, set another group direct-axis current (I again
d2) instruction, and drive permagnetic synchronous motor with the running of identical speed, then detect direct-axis current (I
d2) value of feedback, then obtained another group quadrature axis current (I of permagnetic synchronous motor by the control algolithm of d-q coordinates translation
q2) value of feedback record, then pass through formula:
I
q1·cosθ+|I
d1|·sinθ＝I
q2·cosθ+|I
d2|·sinθ
Derive
Thus calculate the magnetic pole code angle of deviation of motor;
Finally automatically be added in the original magnetic pole code data of system;
Like this, just obtain motor finally, magnetic pole code data the most accurately.
3. permagnetic synchronous motor magnetic pole code accurate adjustment method as claimed in claim 2, is characterized in that: permagnetic synchronous motor quadrature axis current (I
q) its value of feedback can be used, also can use its command value.
4. permagnetic synchronous motor magnetic pole code accurate adjustment method as claimed in claim 2, is characterized in that: permagnetic synchronous motor direct-axis current (I
d) its command value can be used, also can use its value of feedback.
5. permagnetic synchronous motor magnetic pole code accurate adjustment method as claimed in claim 2, is characterized in that: direct-axis current (I
d1) and direct-axis current (I
d2) not identical.
6. permagnetic synchronous motor magnetic pole code accurate adjustment method as claimed in claim 2, is characterized in that: direct-axis current (I
d1) or direct-axis current (I
d2) one of them can be zero.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510450074.XA CN104953919A (en) | 2015-07-28 | 2015-07-28 | Precisely adjusting system and method for magnetic pole code of permanent magnet synchronous motor |
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|---|---|---|---|
| CN201510450074.XA CN104953919A (en) | 2015-07-28 | 2015-07-28 | Precisely adjusting system and method for magnetic pole code of permanent magnet synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329101A (en) * | 2017-07-12 | 2017-11-07 | 日立电梯（中国）有限公司 | The bearing calibration of permanent magnetic synchronous traction machine magnetic pole code and system |
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| US20100156330A1 (en) * | 2008-12-19 | 2010-06-24 | Honda Motor Co., Ltd. | Apparatus for controlling permanent-magnet rotary electric machine |
| CN103856139A (en) * | 2014-03-17 | 2014-06-11 | 江苏吉泰科电气股份有限公司 | Speed sensorless permanent magnet synchronous motor rotor magnetic pole initial position identification method |
| CN103875175A (en) * | 2011-10-21 | 2014-06-18 | 三菱重工业株式会社 | Motor control device and motor control method |
-
2015
- 2015-07-28 CN CN201510450074.XA patent/CN104953919A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100156330A1 (en) * | 2008-12-19 | 2010-06-24 | Honda Motor Co., Ltd. | Apparatus for controlling permanent-magnet rotary electric machine |
| CN103875175A (en) * | 2011-10-21 | 2014-06-18 | 三菱重工业株式会社 | Motor control device and motor control method |
| CN103856139A (en) * | 2014-03-17 | 2014-06-11 | 江苏吉泰科电气股份有限公司 | Speed sensorless permanent magnet synchronous motor rotor magnetic pole initial position identification method |
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| 杜永聪: "《弱磁控制及其与磁极位置的关系分析》", 《电子产品世界》 * |
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| CN107329101A (en) * | 2017-07-12 | 2017-11-07 | 日立电梯（中国）有限公司 | The bearing calibration of permanent magnetic synchronous traction machine magnetic pole code and system |
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Application publication date: 20150930 |
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