一种基于补偿电流的单相电路谐波电流检测算法

针对电网中谐波的危害和"污染"等问题,为了实现有源电力滤波器控制系统谐波电流检测的精确性、实时性,本文提出了一种单相电路谐波电流检测算法,该算法基于补偿电流最小检测原理,通过构造函数将谐波电流检测问题合理地转化为基波有功电流幅值问题,实验表明,新算法具有实时性好、计算量小、易于实现等优点。基于此算法的有源电力滤波器具有较好的动态响应性能,能实现有效的谐波电流补偿,仿真结果验证了该算法的有效性和正确性。

A Harmonic Current Algorithm of Single-phase Circuit Based on Compensated Currents

In order to realize accuracy and real-time for harmonic current detection in the active power filters,a harmonic current algorithm of single-phase circuit based on compensated currents is proposed in this paper for the harmonic harm and the harmonic pollution issue in power systems.The algorithm transforms the harmonic current detection problem into the problem of fundamental active current amplitude by the construction function,which is based on the minimum compensated currents.The experiments show that the new algorithm in this paper has the advantage of low computational and good real-time.It is also easy for the engineering implementation.And this kind of APF based on the minimum compensated currents compensates harmonic current effectively of the good dynamic performance.The simulation results illustrate the validity and effectiveness of the presented algorithm