摘要
由于低通滤波器的影响,传统的ip-iq算法有检测速度慢的缺点,针对此缺点,提出了一种基于变步长LMS/LMF算法自适应滤波器来代替低通滤波器的作用,针对输入信号的特点相应的改变自适应滤波器的步长因子,同时改变最小均方算法(LMS)和最小四阶矩算法(LMF)的比例,充分发挥了LMF和LMS检测精度和检测速度的优势。仿真结果表明,提出的算法检测速度和精度具有明显的优势,具有一定的工程应用价值。
According to the disadvantage of slow detection speed of the traditional ip-iq algorithm due to the low pass filter, this paper proposes a variable step LMS/LMF adaptive filter algorithm to replace the low pass filter. The adap-tive filter can not only change the step size according to the characteristic of input signal, but also change the propor-tion of the least mean square （LMS） algorithm and the least four-order moment （ LMF） algorithm, which makes the advantages of high detection accuracy of LMF and high detection speed of LMS fully played. The simulation results show that the proposed algorithm is effective, and the detection speed and accuracy of harmonic current is improved obviously, which has certain engineering application value.
作者
彭咏龙
张坤锋
李亚斌
杨朋凯
黄江浩
Peng Yonglong;Zhang Kunfeng;Li Yabin;Yang Pengkai;Huang Jianghao(################)
出处
《电测与仪表》
北大核心
2018年第9期6-9,共4页
Electrical Measurement & Instrumentation
