Rapid calibration method and system for permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and calibration method, which is applied in the direction of control system, control generator, vector control system, etc., can solve the problems of burning power devices, controller DC voltage rise, over-modulation, etc., and achieve the simplification of the calibration process, The effect of saving bench resources and improving calibration efficiency

Active Publication Date: 2022-07-26
长安新能源南京研究院有限公司 +1
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  • Application Information

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Problems solved by technology

If the d-axis field weakening current setting is inaccurate, it will lead to over-modulation, current out of

Method used

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  • Rapid calibration method and system for permanent magnet synchronous motor
  • Rapid calibration method and system for permanent magnet synchronous motor
  • Rapid calibration method and system for permanent magnet synchronous motor

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[0055] The present invention will be described in detail below with reference to the accompanying drawings.

[0056] figure 2 Shown is a bench calibration system to realize the rapid calibration of permanent magnet synchronous motor: including controller, motor, dynamometer, frequency converter, power analyzer and upper computer.

[0057] Calibrate the host computer to control the inverter to work at a specific speed, and give the motor controller different , Current combination, control the motor work, collect feedback torque, current, voltage signals of the power analyzer, etc., and find the optimal current combination under different working conditions through a specific algorithm.

[0058] An embodiment of the present invention provides the main steps for realizing the rapid calibration of the permanent magnet synchronous motor, see figure 1 :

[0059] Step 1, online data collection: use the above system to scan different voltages at the minimum operating voltage re...

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Abstract

The invention provides a rapid calibration method and system for a permanent magnet synchronous motor, and the method comprises the steps: 1, carrying out the online data collection: scanning different current working points with different combinations at a minimum working voltage required by a whole vehicle system and a fixed low rotating speed, the direct current bus voltage, the rotating speed, the motor temperature and the electric control IGBT temperature corresponding to all the current working points are obtained through stoping; step 2, off-line data processing: performing off-line processing on the collected data, and finding out an MTPA point, an equal torque curve and an equal flux linkage curve by adopting an algorithm to obtain a global reference ampere meter; and 3, on-line correction: correcting the obtained global reference ampere meter on line by using an automatic optimization tool so as to automatically, rapidly, accurately and safely calibrate the permanent magnet synchronous motor.

Description

technical field [0001] The invention relates to the technical field of synchronous motor control, in particular to a permanent magnet synchronous motor calibration technology for new energy vehicles. Background technique [0002] In recent years, the pace of vehicle electrification has accelerated significantly. Built-in permanent magnet synchronous motor (Interior Permanent Magnet Synchronous Motor, IPMSM) is widely used in electric vehicle drive system as the main drive motor of new energy vehicles due to its advantages of high power density and wide speed regulation range. [0003] For the built-in permanent magnet synchronous motor, the maximum torque current ratio control method is adopted in the constant torque area, and the optimal current excitation component and current torque component are given according to the time-varying parameters of the motor under the condition of given torque. In the constant power region, the field weakening control is used to expand the ...

Claims

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Application Information

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IPC IPC(8): H02P21/14H02P21/06H02P25/024H02P27/12
CPCH02P21/14H02P21/141H02P21/06H02P21/0089H02P25/024H02P27/12H02P2207/05Y02T10/72
Inventor 邓承浩胡建军王志斌彭钱磊陈健
Owner 长安新能源南京研究院有限公司
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