摘要
提出一种应用于三相四线制有源电力滤波器(APF)的瞬时无功功率ip-iq谐波电流检测方法,用于解决传统检测方法提取精度低、收敛速度慢、稳定性较差等问题,采用自适应递推最小二乘法(RLS)算法取代低通滤波器。新方法以改进瞬时无功功率ip-iq法为电流检测依据,先减去电流中的零序分量,再利用坐标变换矩阵计算出电流有功、无功以及交直流分量。结果显示,该算法有效提高了直流分量的提取精度,在三相四线制APF中采用该方法是可行有效的。
A method of instantaneous reactive power ip iq harmonic current detection for a three phase four wire system active power filter（APF） is proposed to solve the problems of the low extraction accuracy, the slow convergence rate and the stability of traditional detection methods, re placing the low pass filter with an adaptive recursive least square algorithm. The new method is based on the improved ip-iq method, which deducts the zero sequence component in the current and calculates the active power, reactive power and AC and DC components by a coordinate transforma tion matrix. The results show that the alg：orithm effectively improves the precision of DC cornpo nent extraction. It is feasible and effective to use this method in the three-phase four-wire APF.
作者
施必剑
胥飞
SHI BiJian;XU fei(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)
出处
《上海电机学院学报》
2018年第5期43-46,52,共5页
Journal of Shanghai Dianji University
