三相四线并联有源滤波器主电路参数选取研究

Research on Selection Method of Parameters in Main Circuit of Three-phase Fourwire Shunt Active Power Filter

并联有源滤波器(Shunt Active Power Filter,SAPF)主电路参数是影响系统补偿效果的决定性因素之一,本文研究两个重要参数:交流侧电感L、直流侧电容电压V_d的选取方法。结合三相四线制SAPF主电路数学模型,针对基于电流跟踪性能的要求,详细讨论了L的选取方法;借助于矢量图形分析的方法,推导出V_d选取的临界值。建立了系统仿真模型,结合基于广义积分器的三维空间矢量PWM(3-D SVPWM)控制策略对系统进行仿真分析,仿真结果验证了该参数选取方法的可行性。

Parameters in main circuit of Shunt Active filter（Shunt Active Power Filter, SAPF） is one of the determining factors which affect the system compensation effect.A calculatiom method of two important parameters is studied in this paper：AC side inductance L,DC bus voltage V_d.Combination of three-phase four-wire shunt APF main circuit model,focus on the requirement of current tracking performance,discussed the method of selecting L in detail;with the help of vector graphics analysis method,derived the selected threshold.Established a system simulation model,simulating and analyzing by using the 3-D Space Vector PWM（3-D SVPWM） based on generalized integrator control strategy,simulation results verify the feasibility of the proposed method.