电压型谐波源与串联型有源电力滤波器

分析了直流侧电感和电容滤波的整流器的谐波特性 ,进而把它们分为电流和电压型谐波源。说明了串联型有源电力滤波器适合补偿电压型谐波源的原因。提出了一种新的检测负载电压控制方法 ,它通过直接检测负载电压来为串联型有源电力滤波器提供参考电压 ,从而改善了其谐波补偿特性。为说明串联型有源电力滤波器补偿电压型谐波源的有效性和比较不同的控制方法 ,进行了实验研究。

VOLTAGE TYPE HARMONIC SOURCE AND SERIES ACTIVE POWER FILTER

The harmonic characteristics of a rectifier with a DC filter inductor or capacitor are analyzed and then relevantlythey are classified into current type and voltage type harmonic source. The reason why the shunt and the series active powerfilters are respectively suitable to compensate for the current type and voltage type harmonic source is illustrated. A newcontrol approach for detecting load voltage is developed. It can directly obtain the load voltage harmonic component to providethe reference voltage for the series APF and improve its compensation performance. The experiment results of a completeprototype of the series APF, are presented to show its validity for compensating the voltage type harmonic source. The newcontrol approach for detecting load voltage is compared with the traditional one.This project is supported by National Nalural Science Foundation of China (No. 59737140).