基于瞬时无功理论的三种谐波电流检算方法研究

Simulation Research on the Detecting Methods for Harmonics and Reactive Currents

本文对基于Akagi瞬时无功功率理论的三种检算方法(基于αβ变换的p-q检算法;基于αβ变换的ip-iq检算法[1];基于dq0变换的电流矢量检算法)进行了仿真研究。分析了三种检算方法的适用范围,并给出数学推导和物理解释。同时,分析了影响检算精度和检算速度的因素,给出了检算电路中低通滤波器的设计参数。

This paper presents three detecting methods for the harmonics and reactive currents.The paper analyses the applicability,deduces mathematics process,carries out the theory of detecting method,and verifies the results of the three methods by simulation in several situations.Furthermore,the design of equivalent LPF has been optimized.And the relationship between detecting results and orders number,cross frequency of filter has been investigated.