Fuzzy hysteresis current control system and method for permanent magnet synchronous motor

A permanent magnet synchronous motor and hysteresis current technology, which is applied in the control system, current controller, AC motor control, etc., can solve the problems of general system response, current tracking control response speed and unsatisfactory steady-state accuracy, etc., to improve Response speed and steady-state accuracy, the effect of enhancing system stability and robustness

Active Publication Date: 2019-02-12
天津天海轮毂电机科技有限公司
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AI Technical Summary

Problems solved by technology

Traditionally, permanent magnet synchronous motor drive control adopts vector control, the system response is average, and the response speed and steady-state accuracy of current tracking control are not ideal

Method used

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  • Fuzzy hysteresis current control system and method for permanent magnet synchronous motor
  • Fuzzy hysteresis current control system and method for permanent magnet synchronous motor
  • Fuzzy hysteresis current control system and method for permanent magnet synchronous motor

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Embodiment Construction

[0051] see figure 1 , the present invention provides a permanent magnet synchronous motor fuzzy hysteresis current control system, including a DC power supply, a fuzzy logic controller, a Park and Clarke conversion module, a hysteresis controller, a PWM generating unit, a PI controller, and a hysteresis controller , differential unit, current sensor, Hall sensor, position and speed generating unit, inverter, current regulator, speed regulator;

[0052] The DC power supply is connected with each bridge arm of the inverter; the speed regulator is connected with the fuzzy logic controller, the differential unit, the position and speed generating unit and the PI controller, and the PI controller is connected with the Park and Clarke conversion modules, and the Park and Clarke conversion modules are connected. The Clarke conversion module is connected with the current regulator, position and speed generation unit, the current regulator is connected with the current sensor and the h...

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Abstract

The invention discloses a fuzzy hysteresis current control system and method for a permanent magnet synchronous motor. Speed error and error variation are taken as inputs of a fuzzy logic controller,an output G is matched with an output signal of the hysteresis controller, PWM (pulse width modulation) is controlled to generate six-channel PWM signals with corresponding duty cycles, and six powerswitching tubes of an inverter are controlled to enable the motor to run stably. Compared with the traditional method, the response speed and steady-state precision of current tracking control are better.

Description

technical field [0001] The invention belongs to the field of motor system and control technology, and in particular relates to a fuzzy hysteresis current control system and method for a permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor (PMSM) is a synchronous motor that generates a synchronous rotating magnetic field by permanent magnet excitation. It has the characteristics of high power efficiency, high power factor, low heat generation, large allowable overload current, and high reliability. Compared with traditional Electrically excited synchronous motors and permanent magnet synchronous motors have the advantages of less loss, high efficiency, and obvious power-saving effects, making permanent magnet synchronous motors rapidly applied and developed in many fields. [0003] More and more domestic and foreign scholars optimize the control algorithm of permanent magnet synchronous motor. Traditionally, the permanent m...

Claims

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Application Information

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IPC IPC(8): H02P6/28H02P6/17H02P27/06
CPCH02P6/17H02P6/28H02P27/06
Inventor 林海李晓辉董媛赵毅李杰王萍于雅鑫梁华刚李刚龚贤武张弢肖剑周熙炜左磊朱玮闫茂德茹锋段晨东汪贵平
Owner 天津天海轮毂电机科技有限公司
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