摘要
讨论了永磁同步电机直接转矩控制转矩脉动问题,针对永磁同步电机直接转矩控制存在较大脉动转矩的缺点,提出了一种模糊调节电压矢量作用时间的永磁同步电机直接转矩控制策略。即在常规永磁同步电机直接转矩控制系统的基础上,根据转矩偏差和转矩偏差的变化率,模糊调节电压矢量作用时间,以减小转矩脉动。仿真结果表明基于模糊调节电压矢量作用时间策略的永磁同步电机直接转矩控制的脉动转矩大大地减小。
The torque ripple in direct torque control(DTC) system of permanent magnet synchronous motor(PMSM) is analyzed. To decrease the torque ripple in PMSM DTC, a PMSM DTC system based on the strategy of modulating the time of voltage vector is proposed . In accordance with the error and the change of error of torque, the time of voltage vector is modulated based on fuzzy inference. Simulation results show that the ripe torque of the PMSM DTC based on the strategy of fuzzy modulating the time of voltage vector is decreased dramatically.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第10期148-152,共5页
Proceedings of the CSEE
