两种单相电路谐波及无功电流检测方法的比较

基于有源电力滤波器对谐波及无功电流检测的实时性和准确性的要求,本文对单相电路谐波及无功电流检测提出了两种方法,即基于瞬时无功功率理论检测法和基于有功电流分离法的检测方法,给出了两种方法的检测原理,并分别对其进行了仿真研究.仿真结果表明,前者的检测结果时延大,动态响应速度慢,但其检测结果更准确.

The Comparison of Two Approaches of Harmonic and Reactive Current Detection in Single-phase Circuit

In order to meet the demand of APF for real time and accuracy, this paper presents two methods of harmonic and reactive current detection for active power filter(APF) in single phase circuit, which are based on instantaneous reactive power theory and active current separate method, and gives principle diagram of detecting circuit respectively Simulation is carried out and experiment results show that the former detecting result is more accurate than the later, despite which is at the cost of longer delay and slower dynamic response speed