一种单相谐波电流检测法的研究

为了解决单相电路瞬时谐波及无功电流检测方法存在着算法复杂的问题，对单相电网电流进行了分解并提出了一种新的单相电路瞬时谐波及无功电流的检测方法，该方法较好地解决了单相电路中谐波及无功电流的实时检测问题，算法简化易于实现。文中对检测中锁相环的作用做了理论上的分析，仿真及实验结果表明基于该检测方法的单相混合式串联有源电力滤波系统能有效的抑制电网中的谐波电流。

Study on A Detecting Method for Harmonic Currents in Single-Phase Circuit

In order to solve the problem of complication in the method for detecting of harmonics and instantaneous reactive currents in single phase circuit,the current in single phase circuit is decomposed and a new det ecting method for harmonics and reactive currents in single phase circuit is pr oposed. The method solved the problem of real time harmoni cs and reactive detecting successfully and it can be realized easily. The effect of Phase Lock Loop (PLL) in the method is analyzed theoretically in detail. Sim ulations and experiments are carried out to show that the single phase active p ower filter, which is based on this method, can compensate harmonics and instant aneous reactive current in single phase circuit effectively.