SAPF两种谐波检测方法的分析和应用

Analysis and application of the two harmonic current detecting methods

介绍了基于瞬时功率理论的静止坐标和旋转坐标下的p-q法和ip-iq法两种谐波检测方法。通过matlab7.0建立仿真模型,并结合有电动钻机的电网中SAPF的试验加以分析。结果表明,p-q法只在电源电压无畸变情况下才能有效的检测电流谐波,而ip-iq法在电源电压有无畸变情况下都能准确的检测出谐波分量。

This paper introduces p-q and ip-i harmonic current detecting methods under rest frame and rotational coordinates based on instantaneous power theory.Through the analysis of simulation model matlab7.0,combing the test of SAPF in electric network with electric drill,it concludes that p-q method is only effective under non-distortion voltage,ip-i method,however,is successful in detecting harmonic accurately under both distortion and non-distortion voltage.