有源电力滤波器抑制谐波的机理分析  

ACTIVE POWER FILTER TO SUPPRESS HARMONIC CAUSED BY NONLINEAR LOAD

作　　者：李承[1] 邹云屏[1] 

机构地区：[1]华中科技大学电气与电子工程学院,湖北省武汉市430074

出　　处：《电力系统自动化》2003年第20期31-34,共4页Automation of Electric Power Systems

摘　　要：研究了中低压电网中由非线性负载产生谐波的机理 ,提出所有由非线性负载直接引起的谐波是电流谐波 ,因而治理非线性负载引起的谐波应首先考虑治理谐波电流。同时 ,从补偿和滤波两种思想出发 ,指出并联型谐波补偿有源电力滤波器 (APF)的补偿作用和串联型基波补偿APF的滤波作用可适用于非线性负载谐波电流的抑制。The mechanism of harmonic caused by nonlinear loads in power systems with medium or low voltage is analyzed. It is put forward that the harmonic directly caused by nonlinear loads is current harmonic, which should be suppressed firstly rather than harmonic voltage. From the idea of compensation and filtering, the parallel compensating harmonic APF and series compensating fundamental wave APF are suitable for suppressing harmonic current. The correctness of the analysis is verified by simulation results.

关 键 词：有源电力滤波器 非线性负载 谐波特性 补偿特性 滤波特性 

分 类 号：TN713[电子电信—电路与系统]