Motor parameter identification method and device

A technology for motor parameters and parameter identification, which is used in the control of electromechanical transmission devices, control of generators, and motor-generator control, and can solve problems such as inability to identify parameters.

Active Publication Date: 2015-04-22
ZHUHAI KAIBANG MOTOR MFR +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a motor parameter identification method and device to solve the problem that the control method of the permanent magnet synchronous motor in the prior art cannot realize the parameter identification when the motor is running within the speed range

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[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0024] It should be noted that the terms "first" and "second" in ...

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Abstract

The invention discloses a motor parameter identification method and device. The motor parameter identification method comprises the steps that motor signals generated in the operation process of a motor are detected; a parameter identification equation is built according to the motor signals, wherein the parameter identification equation is used for calculating motor parameters of the motor, and the parameter identification equation is based on the least square method; the motor parameters are identified according to the parameter identification equation, and a parameter identification result is obtained, wherein the motor parameters are parameters of the motor. Through the motor parameter identification method and device, the problem that parameter identification can not be realized through a control method of a permanent magnet synchronous motor when the motor runs within the rotation speed range is solved.

Description

technical field [0001] The present invention relates to the field of motors, in particular to a method and device for identifying motor parameters. Background technique [0002] The parameters of the permanent magnet synchronous motor vary greatly during operation, and an appropriate online identification method is very important for a high-precision permanent magnet synchronous motor control system. In the prior art, the identification of the parameters is realized by performing matrix operations on each parameter, but in practical applications, the amount of calculation is relatively large, and many computing resources are occupied. Moreover, when the motor is running within the speed range, it is impossible to identify the parameters, and it is impossible to identify the four motor parameters with large changes: permanent magnet synchronous motor AC and direct axis motor inductance parameters Ld and Lq, motor phase resistance R and reverse Electromotive force coefficient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14
Inventor 张有林郭清风米雪涛钱强
Owner ZHUHAI KAIBANG MOTOR MFR
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