一种高性能单相电网有源滤波器的设计

设计了一种高性能的单相电网有源滤波器。该有源滤波器主功率回路采用电压源型H桥逆变器，逆变器开关驱动信号为特定消谐PWM开关信号。控制回路采用PI电压跟踪控制，不需实时检测计算负载的无功电流和高次谐波电流，就可以实现同时补偿负载无功及高次谐波电流的需求。分析了滤波器的补偿特性和各主要单元电路的设计方法，实验结果证明该有源滤波器的有效性。

The Design of a High Performance Single-Phase Active Power Filter

A high performance single-phase line active power filter(APF) is designed. The main power stage of APF is a H-bridge inverter. The switching signals of inverter are PWM pulses which can eliminate some specific harmonics. The control loop adopts voltage-tracking PI controller. The APF can compensate the reactive component and high harmonics of line curent without detecting and calculating the reactive current and harmonic current of the load. The compensation characteristics are also analysed and the main units are designed. The experiment results demonstrate the validity of the proposed APF.