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Permanent magnet synchronous motor parameter identification method

A permanent magnet synchronous motor and parameter identification technology, which is applied in the direction of motor generator testing, measuring electricity, measuring electrical variables, etc., can solve problems such as inability to quickly identify, complex theoretical algorithms, etc., achieve uncomplicated implementation process, high engineering value, The effect of compensating the initial angle error

Pending Publication Date: 2021-04-02
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention proposes a method for off-line parameter identification of permanent magnet synchronous motors to solve the problem that existing parameter identification methods and technical scheme theoretical algorithms are too complicated to be quickly identified and used in practice

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  • Permanent magnet synchronous motor parameter identification method
  • Permanent magnet synchronous motor parameter identification method
  • Permanent magnet synchronous motor parameter identification method

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0033] Such as figure 1 As shown, the steps of the parameter identification of the permanent magnet synchronous motor of the specific embodiment are provided, including:

[0034] Step S41: Test the stable running range and load condition of the motor.

[0035] The specific method is:

[0036] Use the dynamometer platform to measure the motor at different s...

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Abstract

The invention discloses a permanent magnet synchronous motor parameter identification method, and relates to the field of motor control. The method comprises the following steps of: 1, testing a stable operation interval and an on-load condition of a motor; 2, measuring the stator resistance through an off-line method; 3, identifying the rotor flux linkage, and correcting the initial position angle; and 4, identifying the quadrature axis inductance. Aiming at the limitation that the phase resistance value of a stator resistor of a surface-mounted permanent magnet synchronous motor is not changed at normal temperature, compared with the traditional identification method, the method has the advantages that the theory is simpler and easier to understand, the implementation process is not complex, the identified rotor position is more accurate, online updating and optimization adjustment can be realized, and the method has greater significance for the application of actual engineering.

Description

technical field [0001] The invention relates to the field of motor control, and specifically designs a method for identifying parameters of a permanent magnet synchronous motor. Background technique [0002] In recent years, permanent magnet synchronous motors have been widely used and promoted in aviation, railway, electric power, military, new energy vehicles and other fields, and their advanced motor body design concepts and intelligent control algorithms emerge in endlessly. [0003] In the field of engineering applications, there are phenomena such as product performance degradation caused by inaccurate motor parameters, motor operating efficiency that cannot meet design requirements, and batch product status instability. The main reason for such problems is that there is a big difference between the motor design parameters and the actual product parameters. How to accurately identify motor parameters and optimize compensation is an important research direction at pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCG01R31/343
Inventor 张志良魏海峰张懿刘维亭王浩陈
Owner JIANGSU UNIV OF SCI & TECH