PWM整流器直接功率控制系统的优化设计  

Optimal Design of the Direct Power Control System of PWM Rectifier

作　　者：刘晓艳[1] 卢健康[1] 马艳[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《微特电机》2013年第3期48-51,共4页Small & Special Electrical Machines

摘　　要：对采用直接功率控制(DPC)策略的三相电压型PWM整流器的控制系统进行了两点改进:一是把电压环的惯性滤波环节从前向通道改到了反馈回路中,借以提高系统的快速跟随性能;二是利用最平幅频法优化设计了电压调节器的结构和参数。通过Simulink系统仿真检验了上述改进措施的效果,结果表明:它加快了系统的过渡过程,降低了其超调量,从而提高了该系统的动态性能。Two improvements were presented to the direct power control（DPC） strategy control system in three-phase PWM rectifier. First,it removes the inertia filtering element from forward channel to feedback channel for better following performance. The other improvement was to design the structure and parameters of voltage regulator according to the flattest amplitude frequency method. The simulation result shows that the improvements speed up the transient process of system and reduce the overshoot, and finally they also improve the dynamic performances of the system.

关 键 词：直接功率控制 电压环 最平幅频法 PID调节器 

分 类 号：TM34[电气工程—电机]