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笔者研究了将级联多电平拓扑应用于有源电力滤波器(APF)的方法。在调制方法上采用载波移相的调制技术,在控制上采用简单的PI控制方法。仿真结果表明,这种基于级联多电平拓扑的有源电力滤波器能很好地跟踪补偿电网谐波,具有很好的动态响应和较高的检测精度,并且快速准确地实现各个变流器单元直流侧电容的均压控制,这对拓展有源电力滤波器在高压领域的应用有积极意义。
The author has studied a method of applying a cascaded multi-level topology to an active power filter (APF). Modulation method using carrier phase shift modulation in the control of a simple PI control method. The simulation results show that the active power filter based on the cascaded multi-level topology can track the harmonics of the power grid well, has good dynamic response and high detection accuracy, and can realize all the commutation fast and accurately DC voltage-sharing capacitor unit control, which is to expand the active power filter applications in the field of high pressure has a positive meaning.