微特电机 ›› 2019, Vol. 47 ›› Issue (4): 52-55.doi: 1004-7018(2019)04-0052-04

• 驱动控制 • 上一篇    下一篇

永磁同步电机改进型电流预测控制策略研究

肖海峰   

  1. 西安航空学院,西安 710077
  • 收稿日期:2018-07-05 出版日期:2019-04-28 发布日期:2019-04-28
  • 基金资助:
    陕西省教育厅科研计划资助项目(17JK0398);西安市科技计划项目(2017076CG/RC039XAHK002)

Research on Improved Current Prediction Control Strategy of Permanent Magnet Synchronous Motor

XIAO Hai-feng   

  1. Xi’an Aeronautical University, Xi’an 710077,China
  • Received:2018-07-05 Online:2019-04-28 Published:2019-04-28

摘要:

为了提高永磁同步电机电流预测控制的鲁棒性,研究了一种改进型电流预测控制算法。该算法以定子电流预测值与采样值之间的偏差作为补偿依据,引入的电流预测补偿因子可以实时对电机定子期望参考电压进行偏差修正,补偿项使反馈电流跟踪给定值,实现了下一个控制周期结束时电流误差为零的目标。改进后的电流预测控制策略能有效抑制电机参数失配带来的系统不稳定问题,增强了传统电流预测控制策略的鲁棒性,仿真和实验结果分析了该算法的有效性和可行性。

关键词: 永磁同步电机, 电流预测控制, 电流环带宽, 模型参数失配

Abstract:

In order to improve the robustness of the permanent magnet synchronous motor current predictive control,a modified current predictive control algorithm was studied. The algorithm took stator current deviation between predicted values and the sampling value as compensation,the introduction of the current prediction can expect reference voltage of motor stator real-time compensation factor to correct the deviation. Compensation term feedback current tracks the given value, the next control cycle error is zero at the end of the current target.The improved current predictive control strategy can effectively inhibit the system instability problem caused by motor parameter mismatch,enhance the robustness of traditional current predictive control strategy.The feasibility and effectiveness of the introduced algorithm were analyzed by the simulation and experiment results.

Key words: permanent magnet synchronous motor, current predictive control, current loop bandwidth, model parameters mismatch

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