有源电力滤波器谐波检测算法的研究

Research for Harmonics Detecting Algorithm of Active Power Filter

通过对三相四线制系统中三相不平衡情况的研究,提出了一种基于改进的瞬时无功功率的谐波和无功电流的检测方法。详细阐述了这种算法的理论推导,表明应用改进检测算法的检测环节,不用先分离出零序电流,就可准确检测出电网中的谐波及无功电流。最后采用MATLAB软件进行仿真实验,证明该检测算法的正确性。

Through researching on the situation of three - phase unbalanced circuit used in three - phase four - wired system, a method is brought forward to detect harmonic and reactive. The derivation of this algorithm was represented. It indicated that use this new algorithm can detect the harmonic without deteacting the zero- sequence current. In the end, do the simulation with MATLAB. The feasibility is to be proved.