改进型p-q法在并联有源滤波器中的应用原理与仿真

Application Principle and Simulation of Improved p-q Method in Shunt-APF

针对实际电网电压波形存在畸变的问题,本文提出一种新的检测方法,避免由于电网电压不平衡所造成的检测误差,使检测结果更为准确,补偿效果更为理想。本文在介绍传统两种检测方法原理的基础上,提出改进策略,对改进的方法原理进行介绍,在电网电压畸变或仍对称或不对称两种情况下进行仿真比较,最终得出改进后方法的正确性与准确性。

In connection with the problem that actual voltage waveform exist distortion, the paper proposes a new detection method to avoid detection error caused by voltage imbal- ance, and make detection results more precise, compensation effect more perfect. Based on introducing principle of two traditional detection methods, proposed improvement strate- gies, introduce the principle of improved method, and simulation comparison when voltage distortion but still symmetrical and not symmetrical. Eventually we come to the correctness and accuracy of the improved method.