有源电力滤波器指令电流提取算法的研究

从传统i-i方法的基本原理出发,推导出瞬时电压矢量定向和基波正序电压矢量定向的2种新型指令电流提取算法.2种算法充分利用了三相电源电压的全部信息,解决了以往锁相环难以精确锁相的难题,从而可快速精确地分离出畸变电压产生的谐波电流.新型指令电流提取算法对于有源电力滤波器实现动态谐波治理与无功补偿提供了新的途径,在工程中有良好的应用价值与开发前景.

Research on Extraction Algorithm for Command Current of Active Power Filter

From the basic principle of traditional ip-iq method, deduced new extracting algorithm of instruction current for instantaneous voltage vector orientation and the fundamental positive sequence voltage vector orientation. The two methods make full use of three-phase voltage of all information and solve the problem that the PLL could not lock the phase precisely, thus quickly and accurately isolate harmonic current that distortion voltage generated. New extraction algorithm provides a new way for active power filter to realize dynamic harmonic suppression and reactive power compensation and has good application value and development prospect.