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并联型有源电力滤波器(Shunt Active Power Filter,SAPF)在补偿电压源型非线性负载时,存在负载谐波电流放大效应,且谐波补偿效果较差。针对上述问题,提出一种应用于电压型谐波源的新型SAPF控制策略。该策略采用负载谐波电流与公共连接点(PCC)谐波电压共同控制SAPF输出谐波补偿电流。理论分析和实验结果表明,所提新型S A P F控制方法,能够有效抑制负载谐波电流放大,改善SAPF对电源型非线性负载的补偿效果。
Shunt Active Power Filter (SAPF) has the effect of harmonic current amplification when compensating voltage source nonlinear load, and the harmonic compensation effect is poor. In view of the above problems, a new SAPF control strategy for voltage harmonic source is proposed. In this strategy, the harmonic current of load and the harmonic voltage of common connection point (PCC) are used to control the SAPF output harmonic compensation current. Theoretical analysis and experimental results show that the proposed new S A P F control method can effectively suppress the amplification of load harmonic current and improve the compensation effect of SAPF on power nonlinear loads.