三相并联有源滤波器的控制策略研究

主要研究了并联有源滤波器的3种控制策略：基于瞬时无功理论的控制策略（IPT）；单位功率因数控制策略（UPF）：同步功率传输控制策略（SPF）。分析了3种控制策略的基本思想，用仿真手段比较了3种控制策略在稳态时谐波抑制性能，在负载电流变化时的暂态性能，及在电网非理想情况下的补偿性能，仿真结果表明：在谐波抑制方面，UPF策略优于其他2种策略；在暂态性能方面，UPF策略则略逊于其他2种策略。在这3种控制策略中，UPF策略是最容易实现的。

Study on Control Strategy for Three-phase Shunt Active Power Filter

This paper makes detail study on three control strategies for shunt active power filter:the Instantaneous Power Theory control strategy (IPT); the Unity Power Factor control strategy (UPF); the Synchronous Power Flow control strategy (SPF). The paper Analyzes control scheme of three strategies,compares the steady state and transient state performance and compensation performance under nonideal 3 phase supply. Simulation results show that UPF strategy has better harmonic compress performance than others strategies,but UPF strategy has worse transient behavior than others strategies.UPF strategy is easiest to realize among three strategies.