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PMSM control method and system based on sliding mode observation

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of control system, vector control system, motor generator control, etc., and can solve the problems of slow dynamic response of the motor and affecting the control accuracy of the motor

Active Publication Date: 2016-08-03
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the dynamic response of the traditional vector control motor is slow, and the motor parameters will change with the load during operation, that is, load disturbance, etc., which will affect the control accuracy of the motor

Method used

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  • PMSM control method and system based on sliding mode observation
  • PMSM control method and system based on sliding mode observation
  • PMSM control method and system based on sliding mode observation

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0034]The purpose of the present invention is to overcome the load interference faced by permanent magnet synchronous motors under complex working conditions, resulting in the defects of slow control dynamic response and poor control effect, and provide a fast dynamic response speed, strong self-adaptability, and high control precision. control method of permanent magnet synchronous motor. This...

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Abstract

The invention discloses a PMSM (Permanent Magnet Synchronous Motor) control method and system. The PMSM control method and system are characterized in that a sliding mode observer for a load torque is designed in a PMSM vector control; compensation is performed by means of integration with slide mode control of a speed ring; redesign is performed on a speed controller; and at the same time, a relatively stable q-axis reference current can be obtained so that relatively ideal rotating speed and torque can be obtained. The PMSM control method and system can quickly and effectively adjust various input and output parameters of the PMSM when the system is interfered, and has the advantages of being high in the dynamic response speed and the robustness, and improving the control accuracy and operational reliability of the PMSM.

Description

technical field [0001] The present invention relates to the technical field of permanent magnet synchronous motors, and more specifically, to a control method and system for permanent magnet synchronous motors based on sliding mode observation. Background technique [0002] In recent years, with the development of rare earth permanent magnet materials and power devices, permanent magnet synchronous motors (Permanent Magnet Synchronous Motor, PMSM) have received extensive attention for their high performance, high torque inertia ratio and high energy density, especially permanent magnet The decline in material prices and the improvement of magnetic properties have greatly promoted the development and application of permanent magnet synchronous motors. In recent years, the permanent magnet synchronous motor system is playing an increasingly important role in the servo system with high precision and wide speed range. Permanent magnet synchronous motor is a multivariable, stron...

Claims

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Application Information

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IPC IPC(8): H02P21/13
CPCH02P21/13
Inventor 徐伟蒋亚杰穆朝絮
Owner HUAZHONG UNIV OF SCI & TECH
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