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Method, device and equipment for calibrating maximum torque current ratio of permanent magnet synchronous motor

A permanent magnet synchronous motor, maximum torque current technology, applied in motors, current controllers, electric vehicles, etc., can solve the problems of poor calibration accuracy, high labor cost, long calibration cycle, etc., to improve calibration accuracy and simple operation. , the effect of shortening the calibration cycle

Pending Publication Date: 2022-06-07
奇瑞新能源汽车股份有限公司
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Problems solved by technology

[0004] The present application provides a method, device, electronic device and storage medium for calibrating the maximum torque-current ratio of a permanent magnet synchronous motor to solve the problem of manually calibrating the maximum torque-current ratio in the related art, which has a long calibration period and low efficiency, and Calibration accuracy is poor, labor costs are high, etc.

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  • Method, device and equipment for calibrating maximum torque current ratio of permanent magnet synchronous motor
  • Method, device and equipment for calibrating maximum torque current ratio of permanent magnet synchronous motor
  • Method, device and equipment for calibrating maximum torque current ratio of permanent magnet synchronous motor

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Embodiment Construction

[0023] The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application.

[0024] The following describes the method, device, electronic device, and storage medium for calibrating the maximum torque-to-current ratio of the permanent magnet synchronous motor according to the embodiments of the present application with reference to the accompanying drawings. Aiming at the problems mentioned in the above background art that the maximum torque-to-current ratio is usually manually calibrated, the calibration period is long, the efficiency is ...

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Abstract

The invention relates to the technical field of permanent magnet synchronous motors, in particular to a maximum torque current ratio calibration method, device and equipment of a permanent magnet synchronous motor. The method comprises the following steps: generating a current amplitude maximum torque current ratio MTPA table according to an obtained maximum torque value under each current amplitude of the permanent magnet synchronous motor and a current angle corresponding to the maximum torque value; generating a current angle MTPA table according to the obtained maximum torque value at each angle of the permanent magnet synchronous motor and the current amplitude corresponding to the maximum torque value; and according to the data of the current angle MTPA table, blank lattice points in the current amplitude MTPA table are supplemented to obtain an MTPA calibration result of the permanent magnet synchronous motor. Therefore, the problems of long calibration period, low efficiency, poor calibration precision, high labor cost and the like due to the fact that the maximum torque current ratio is calibrated manually in the prior art are solved.

Description

technical field [0001] The present application relates to the technical field of permanent magnet synchronous motors, and in particular, to a method, device, electronic device and storage medium for calibrating a maximum torque-to-current ratio of a permanent magnet synchronous motor. Background technique [0002] The parameters of the IPMSM (Permanent Magnet Synchronous Motor) are prone to change with the operating state, resulting in parameter uncertainty that will affect the control performance of the motor. The current change during the motor operation has a great influence on the inductance value of the motor windings, especially in the magnetic circuit. When saturated, the inductance parameter changes more obviously, therefore, the precision requirement of motor MTPA (maximum torque to current ratio) calibration is getting higher and higher. [0003] In the related art, the motor MTPA is usually calibrated by manual calibration. However, manual calibration requires en...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/28
CPCH02P6/28Y02T10/64
Inventor 闫肖梅陈士刚刘靓方磊沙文瀚李庆国张杰舒晖姚峰刘智慧
Owner 奇瑞新能源汽车股份有限公司
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