【摘要】 有源电力滤波器(APF)的数字化控制日趋普遍。然而在谐波电流检测、指令电流计算和基于PWM逆变电源的补偿电流输出过程中会产生延时,从而对APF的补偿功能造成不利影响。针对现有的几种典型补偿方法所表现出的时延效应及相应的改进措施进行了分析和比较,并加以实验验证。更多还原

【Abstract】 Digital controller has been widely used in Active Power Filter(APF).However,the time delay of APF,which caused by harmonic current detecting,current reference calculating and output delay of harmonic current based on PWM,influences seriously on the tracking characteristics of APF.This paper analyzes the influence and its compensa-tion methods used in three typical APF control methods.Moreover,comparison experiments have been illustrated for verifying the effectiveness of delay compensation methods.更多还原