基于逆变器多重化的串联混合型有源滤波器的仿真研究

The Simulation of Serial Hybrid Active Power Filter Based on Multiplicity of Inverter

针对串联混合型有源滤波器的特点,提出了用电流型逆变器多重化技术来减小输出电流谐波,从而等效地增大了串联有源滤波器的谐波阻抗,进一步隔离了谐波源在电源与负载间的互串。该方案有效地减少了电源电流谐波畸变率,仿真结果验证了方案的可行性。

On the basis of analysing the characteristics of the series hybrid active power filter(SHAPF),this paper takes the fact of inverter抯 harmonic current into consideration and proposes the method of multiplicity of the inverter which produces less harmonics. By this way, the harmonic impedance of SHAPF will be increased obviously, consequently, the harmonic influence between the power source and the load is reduced more effectively. Thus, the effect of filtering is improved remarkably. The simulation verifies the correctness and validity of this method.