摘要
针对六相永磁同步电机一相绕组开路时,α-β子空间电压矢量分布不规则,传统的矢量控制和空间矢量脉宽调制方法将无法实现的情况,提出一种基于模型预测电流控制(MPC)的容错控制策略。对不同模型预测电流控制策略进行了比较研究,包括单矢量MPC、双矢量MPC和三矢量MPC等3种控制策略。在Matlab/Simulink中搭建了六相永磁同步电机缺相后的数学模型,并以相同的采样频率实现3种控制策略对六相电机缺相后的容错控制。通过仿真验证了所搭建数学模型的正确性和提出的容错控制算法的有效性,比较了3种控制策略的优缺点,其中三矢量MPC较为复杂但控制性能最佳。
A fault-tolerant control strategy based on model predictive current control(MPC)was proposed to solve the problem that theα-βsubspace voltage vector distribution is irregular when one phase winding of six-phase PMSM is open,and the traditional vector control and space vector pulse width modulation technology cannot be used.The predictive current control strategies of different models were compared,including one-vector MPC,two-vector MPC and three-vector MPC.In Matlab/Simulink,the mathematical model of six-phase PMSM after phase failure was built,and the fault-tolerant control of the six-phase motor after phase failure was realized by three control strategies with the same sampling frequency.The correctness of the established mathematical model and the effectiveness of the proposed fault-tolerant control algorithm were verified by simulation,and the advantages and disadvantages of three control strategies were compared,among which three vector MPC is more complex but has the best control performance.
作者
王涛
王爱元
孙健
金永星
WANG Tao;WANG Aiyuan;SUN Jian;JING Yongxing(School of Electrical Engineering, Shanghai Dianji University, Shanghai 201306, China)
出处
《微电机》
北大核心
2020年第5期73-77,104,共6页
Micromotors
关键词
六相永磁同步电机
缺相
模型预测控制
容错控制
six-phase permanent magnet synchronous motor
open-phase
model predictive control
fault-tolerant control
