摘要
为了提高电能质量及对电网谐波进行抑制和补偿,提出了一种新的变步长最小均方(Least Mean Square,简称LMS)算法。算法采用近似归一化的处理方法构造反馈信号T(n),并通过T(n)的相干平均估计来调节步长。该算法动态响应快,检测精度高。对单相负载电流进行了Matlab仿真及DSP实验,结果均验证了该算法的有效性。
In order to improve the quality of electric energy, the harmonics of power system is restrained and compensated. A novel variable step-size least mean square（LMS） algorithm of harmonic current detection is introduced,which uses the coherence average estimation of T（n） to control the updating of the step size.It can provide a fast dynamic response while ensuring high detecting precision.Based on the Matlab simulations and DSP experiment of single-phase current,both resuits have verified the effectiveness.
出处
《电力电子技术》
CSCD
北大核心
2008年第11期13-14,共2页
Power Electronics
关键词
滤波器
谐波
检测/自适应滤波
变步长
近似归一化
fiher
harmonic
current detection / adaptive filter
variable step-size
approximate normalization
