CN104793141A - Method for testing temperature rise of three-phase alternating-current permanent magnet motor - Google Patents
Method for testing temperature rise of three-phase alternating-current permanent magnet motor Download PDFInfo
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- CN104793141A CN104793141A CN201510229906.5A CN201510229906A CN104793141A CN 104793141 A CN104793141 A CN 104793141A CN 201510229906 A CN201510229906 A CN 201510229906A CN 104793141 A CN104793141 A CN 104793141A
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Abstract
The invention discloses a method for testing temperature rise of a three-phase alternating current permanent magnet motor, which belongs to the technical field of motor test, and aims at solving the problems that external test equipment is needed and energy of the motor is consumed during long-term operation when temperature rise of a permanent magnet synchronous motor is tested at present. The method comprises the following steps: reading nameplate information of a tested motor, and recording numerical values of power, current and rotating speed of the motor during rated operating; adjusting a driving controller, and controlling the direct-axis voltage and quadrature-axis voltage applied to the winding so as to maintain the rotating speed of the motor at the rotating speed in the step 3; and testing the three-phase winding current, obtaining the current Iq2 and Id2 of the dq axis by virtue of dq conversion, measuring the temperature rise of the motor, thereby obtaining a temperature rise curve of the motor. The method disclosed by the invention has the advantages that the dq axis current is regulated by virtue of the driving controller, so that the motor is positioned in a non-load state, and the temperature rise condition of the motor in a load state is simulated in the state. According to the method, an extra mechanical loading device is not needed, and energy consumption caused by mechanical load in the testing process is avoided.
Description
Technical field
The present invention relates to a kind of Thee-phase alternating current permanent-magnetic electric machine temperature rise method of testing, belong to the technical field of electromechanical testing.
Background technology
At present, the method for testing for permagnetic synchronous motor temperature rise mainly contains thermometer method, electric-resistivity method and thermometry meter method three kinds.The surface temperature of what thermometer method was tested be generally motor, electric-resistivity method test be the medial temperature of winding, the test of thermometry meter method is then temperature element is imbedded the internal temperature that motor internal carrys out testing of electric motors.
But the method for testing of these three kinds of temperature rises all needs to make the long-time loaded work piece of motor, electric machine temperature rise is made to reach steady state (SS) to complete temperature rise test.This just requires to need in temperature rise test process to make motor external load equipment, virtually improves the condition required for test.And because the change of temperature needs certain hour, making motor reach stable temperature rise more needs the plenty of time, during this, motor all needs to carry out under a load, causes the waste of energy.
Summary of the invention
The object of this invention is to provide a kind of Thee-phase alternating current permanent-magnetic electric machine temperature rise method of testing, when being to solve test permagnetic synchronous motor temperature rise at present, needing additional testing apparatus and the catabiotic problem of motor long-play.
Described object is realized by following scheme: described a kind of Thee-phase alternating current permanent-magnetic electric machine temperature rise method of testing, and its method step is:
Step one: read by the name plate information of measured motor, the numerical value of power, electric current and rotating speed when record Rated motor runs;
Step 2: the electric current of record in step one is carried out current transformation, obtains the phase current values of motor three-phase windings, then through dq conversion show that output power of motor is rated power when, the dq shaft current I of motor
d1and I
q1;
Step 3: motor is accessed driver, and control and drive system brings into operation, and regulates the input voltage of motor winding, makes the rotating speed of motor be the numerical value that step one records;
Step 4: regulate driving governor, control the direct-axis voltage now added by winding and quadrature-axis voltage, makes the rotating speed in the rotating speed maintenance step 3 of motor, and tests out three-phase windings electric current now, convert the dq shaft current I drawn now through dq
q2and I
d2, and make dq shaft current now meet following formula:
(I
d1)
2+(I
q1)
2＝(I
d2)
2+(I
q2)
2；
Step 5: the temperature rise of measuring now motor, obtains the temperature rise curve of motor.
The electric machine temperature rise curve tested is then use the output power of motor that tests out of this method of testing to be electric machine temperature rise curve in step one.
Advantage of the present invention is by control and drive system adjustment dq shaft current, makes motor be in light condition, and simulates the temperature rise situation under motor load state under this state.Compared to traditional method for testing temperature rise, the method, without the need to applied mechanical load device, saves testing cost, and can not cause in test process with the energy ezpenditure that mechanical load causes.
Adopt the inventive method to realize in the process of Thee-phase alternating current permanent-magnetic electric machine temperature rise test, the casing of motor and shaft extension all need not specially be fixed, and also do not need external unit.The series of advantages such as have that structure is simple, stable performance, data are reliable, can meet the needs of general permagnetic synchronous motor temperature rise test.The series of advantages such as have that structure is simple, stable performance, data are reliable, can meet the needs of general permagnetic synchronous motor temperature rise test.
Embodiment
Embodiment one: its method step is:
Step one: read by the name plate information of measured motor, the numerical value of power, electric current and rotating speed when record Rated motor runs;
Step 2: the electric current of record in step one is carried out current transformation, obtains the phase current values of motor three-phase windings, then through dq conversion show that output power of motor is rated power when, the dq shaft current I of motor
d1and I
q1;
Step 3: motor is accessed driver, and control and drive system brings into operation, and regulates the input voltage of motor winding, makes the rotating speed of motor be the numerical value that step one records;
Step 4: regulate driving governor, control the direct-axis voltage now added by winding and quadrature-axis voltage, makes the rotating speed in the rotating speed maintenance step 3 of motor, and tests out three-phase windings electric current now, convert the dq shaft current I drawn now through dq
q2and I
d2, and make dq shaft current now meet following formula:
(I
d1)
2+(I
q1)
2＝(I
d2)
2+(I
q2)
2；
Step 5: the temperature rise of measuring now motor, obtains the temperature rise curve of motor.
The electric machine temperature rise curve tested is then use the output power of motor that tests out of this method of testing to be electric machine temperature rise curve in step one.
Claims (1)
1. a Thee-phase alternating current permanent-magnetic electric machine temperature rise method of testing, is characterized in that its method step is:
Step one: read by the name plate information of measured motor, the numerical value of power, electric current and rotating speed when record Rated motor runs;
Step 2: the electric current of record in step one is carried out current transformation, obtains the phase current values of motor three-phase windings, then through dq conversion show that output power of motor is rated power when, the dq shaft current I of motor
d1and I
q1;
Step 3: motor is accessed driver, and control and drive system brings into operation, and regulates the input voltage of motor winding, makes the rotating speed of motor be the numerical value that step one records;
Step 4: regulate driving governor, control the direct-axis voltage now added by winding and quadrature-axis voltage, makes the rotating speed in the rotating speed maintenance step 3 of motor, and tests out three-phase windings electric current now, convert the dq shaft current I drawn now through dq
q2and I
d2, and make through time dq shaft current meet following formula:
(I
d1)
2+(I
q1)
2＝(I
d2)
2+(I
q2)
2；
Step 5: the temperature rise of measuring now motor, obtains the temperature rise curve of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229906.5A CN104793141B (en) | 2015-05-07 | 2015-05-07 | A kind of Thee-phase alternating current permanent-magnetic motor temperature rise test method |
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|---|---|---|---|
| CN201510229906.5A CN104793141B (en) | 2015-05-07 | 2015-05-07 | A kind of Thee-phase alternating current permanent-magnetic motor temperature rise test method |
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| Publication Number | Publication Date |
|---|---|
| CN104793141A true CN104793141A (en) | 2015-07-22 |
| CN104793141B CN104793141B (en) | 2018-05-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717451A (en) * | 2016-01-22 | 2016-06-29 | 刘玉臻 | Pumping unit and method and device for measuring no-load counter electromotive force of permanent magnet motor of pumping unit |
| CN106997024A (en) * | 2017-04-21 | 2017-08-01 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of permagnetic synchronous motor parameter detection device and method |
| CN108020783A (en) * | 2017-12-01 | 2018-05-11 | 哈尔滨工业大学 | A kind of motor temperature rise equivalent detecting method of short-time load excitation |
| CN116482534A (en) * | 2023-04-26 | 2023-07-25 | 哈尔滨东安汽车动力股份有限公司 | Temperature rise test method for Cheng Yongci synchronous motor |
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| CN108020783A (en) * | 2017-12-01 | 2018-05-11 | 哈尔滨工业大学 | A kind of motor temperature rise equivalent detecting method of short-time load excitation |
| CN108020783B (en) * | 2017-12-01 | 2019-05-24 | 哈尔滨工业大学 | A kind of motor temperature rise equivalent detecting method of short-time load excitation |
| CN116482534A (en) * | 2023-04-26 | 2023-07-25 | 哈尔滨东安汽车动力股份有限公司 | Temperature rise test method for Cheng Yongci synchronous motor |
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| CN104793141B (en) | 2018-05-22 |
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Inventor after: Zou Jibin Inventor after: Zeng Depeng Inventor after: Xu Yongxiang Inventor before: Zou Jibin Inventor before: Wang Jian Inventor before: Zhao Bo Inventor before: Zeng Depeng Inventor before: Xu Yongxiang Inventor before: Li Yong Inventor before: Shang Jing Inventor before: Hu Jianhui Inventor before: Liu Chengjun Inventor before: Zhao Meng Inventor before: Jiang Shanlin |
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