永磁直线同步电动机改进三矢量模型预测电流控制

微特电机 ›› 2022, Vol. 50 ›› Issue (7): 40-46.

永磁直线同步电动机改进三矢量模型预测电流控制

朴奕帆, 赵希梅

沈阳工业大学电气工程学院,沈阳 110870

收稿日期:2022-01-18 出版日期:2022-07-28 发布日期:2022-08-15
作者简介:朴奕帆(1996—)男,硕士研究生,研究方向为电机控制和智能控制。

Improved Three Vector Model Predictive Current Control for Permanent Magnet Linear Synchronous Motor

PIAO Yifan, ZHAO Ximei

School of Electrical Engineering, Shenyang University of Technology,Shenyang 110870, China

Received:2022-01-18 Online:2022-07-28 Published:2022-08-15

摘要/Abstract

摘要： 为解决永磁直线同步电动机双矢量模型预测电流控制存在电流脉动和推力波动较大、速度超调量过大的问题,采用一种改进的三矢量模型预测电流控制方法。该策略在单个采样周期作用2个有效矢量和1个零矢量,通过代价函数直接选取第一、第二最优矢量,再使用零矢量调节幅值,实现了任意幅值快速矢量选取。同时速度环使用模糊PI控制来减小控制系统速度超调,进而提高系统的控制性能。仿真结果表明,所提出的控制方法切实可行,能够有效降低电流脉动和推力波动,减小了超调,提高了系统的稳态性能。

关键词: 永磁直线同步电动机, 模型预测电流控制, 三矢量, 电流脉动, 模糊PI控制

Abstract: In order to solve the problems of large current ripple, large thrust ripple and excessive speed overshoot in two vector model predictive current control of permanent magnet linear synchronous motor, an improved three vector model predictive current control method was proposed. In this strategy, two effective vectors and one zero vector are applied in a single sampling period. The first and second optimal vectors were directly selected through the cost function, and then the zero vector was used to adjust the amplitude, so as to realize the rapid vector selection of arbitrary amplitude. At the same time, the fuzzy PI control was used in the speed loop to reduce the speed overshoot of the control system, so as to improve the control performance of the system. The simulation results show that the proposed control method is feasible, which can effectively reduce the current ripple and thrust ripple, reduce the speed overshoot and improve the steady-state performance of the system.

Key words: permanent magnet linear synchronous motor PMLSM, model predictive current control MPCC, three vector, current ripple, fuzzy PI control

中图分类号:

朴奕帆, 赵希梅. 永磁直线同步电动机改进三矢量模型预测电流控制[J]. 微特电机, 2022, 50(7): 40-46.

PIAO Yifan, ZHAO Ximei. Improved Three Vector Model Predictive Current Control for Permanent Magnet Linear Synchronous Motor[J]. Small & Special Electrical Machines, 2022, 50(7): 40-46.

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