有源滤波器多目标检测策略建模研究

Research on the Novel Multi-target Detection Strategy Modeling for Active Power Filter

针对有源滤波器多个控制目标的趋势,本文采用一种能在不对称和电网电压存在畸变条件下准确提取电网中谐波或无功电流的检测方法,并搭建了PSCAD仿真模型。该模型从矢量分析角度出发,通过对三相电网电压和电流矢量在d-q坐标系下进行投影变换,实现了谐波和无功电流任意组合的提取。仿真结果验证了多目标检测策略的检测精度,该多目标检测策略也大大简化了对多目标有源滤波器的控制策略设计,模型具有很强的实用价值。

This paper adopts and realizes a detection method which can accurately extract harmonic or reactive currents under asymmetric or distorted supply voltage condi- tions for Multi-target APF trend. And the PSCAD simulation model is built. The model of proposed method extracts harmonic and reactive currents discretionarily through three phase voltage and current vectors project transformation in d-q coordinate. Good control precision and compensation performance has carried on the simulation. Multi-target APF control strategy system is predigested for using this detection strategy. The method has very strong utility value.