摘要
通过对PWM整流器在d-q同步旋转坐标系下输出电压控制性能的分析,提出了一种基于负载电流前馈的新的控制方法。与通常采用的线性PI控制相比,该方法消除了系统随负载变化的极点,同时也消除了系统的不稳定极点,使整流器的负载特性不再影响系统的稳定性和动态性能。仿真结果表明,系统的动态性能也得到了极大的提高,验证了提出方法的正确性和有效性。
Through the analysis of the voltage control implementation of the PWM rectifier in the d-q synchronous reference frame, a new control method based on the load current feed-forward was presented. Compared with the usual linear PI control, the mentioned strategy has removed the pole which is variable with the load, and at the same time, the unstable pole of the system is also removed. So the stability of the system and dynamic performance will not be affected by the load characteristic. Simulation results indicate that the dynamic performance of the system is obviously improved, which also confirm the validity of above mentioned strategy.
出处
《电气传动》
北大核心
2009年第9期41-44,共4页
Electric Drive
关键词
PWM整流器
控制
前馈
动态性能
稳定性
PWM rectifier
control
feed-forward
dynamic performance
stability
