通过所给出的串联型有源电力滤波器系统结构 ,分析了其补偿电压型负载的工作原理。在此基础上探讨了串联型有源电力滤波器的关键技术之一———获得参考电压的控制策略 ,包括检测电源电流和检测负载电压两种控制策略 ,并设计了相应的控制电路。最后 ,通过实验研究了串联型有源电力滤波器采用这两种不同控制策略时对电压型负载的谐波补偿效果 Through the system structure of series active power filter, the working principle of compensating voltage type load is analyzed. On this basis, we discuss the control strategy of obtaining the reference voltage, which is one of the key technologies of the series active power filter. The control strategy includes detecting the power supply current and detecting the load voltage, and designing the corresponding control circuit. Finally, the harmonic compensation effect of the voltage-type load by the two different control strategies is studied experimentally