电力有源滤波器中谐波电流检测与仿真

Harmonic current detecting and simulation of the active power filter

在电力有源滤波器设计中,谐波电流的实时检测是控制与补偿的关键技术环节。本文基于坐标变换和瞬时无功理论,得到谐波电流值。为了验证理论分析,进行不可控整流桥带容性负载的非线性负载仿真。基于MAT-LAB/SIMULINK的仿真结果表明可以有效地得到电流中的基波和谐波成分。

In the design of active power fiXter, the real -time detection of harmonic current is the key techniques of control and compensation. In the paper, based on the theory of coordinate transformation and instantaneous reactive power, we got the value of harmonic current. Meanwhile, to verify the theory＇s analysis, we used MATLAB to simulate the nonlinear load which is the uncontrolled bridge rectifier with capacitive load. The simulation results showed that we could effectively get the fundamental and harmonic components of the current.