基于变步长自适应滤波器的瞬时对称分量法  

New Instantaneous Symmetrical Components Based on Variable Step-size Adaptive Algorithm

作　　者：吴振兴[1] 蔡信健[1] 周亮[1] 孙乐[1] 

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《船电技术》2014年第7期44-47,共4页Marine Electric & Electronic Engineering

基　　金：国家自然科学基金(51277178)

摘　　要：瞬时对称分量法基于瞬时测量可以将任意的三相信号分解成正序、负序、零序分量,然后在各自的等效电路中进行分析。传统的瞬时对称分量法一般在dq0坐标系下进行变换及计算,算法中的低通滤波器对其动态性能影响很大。本文基于αβ0坐标系,提出了一种新型的瞬时对称分量法,该算法采用变步长自适应检测原理,能够较好地兼顾稳态精度及动态响应,仿真结果验证了算法的有效性。Using the instantaneous measurement value of three phase signal, instantaneous symmetrical components can be divided the three phase signal to its positive, negative and zero sequence components. But＂ the traditional instantaneous symmetrical component is based on dqO axis, and in case of low pass filter adopted in, the dynamic performance is aggravated seriously. On the basis of αβ0 axis, this paper proposes a new instantaneous symmetrical component which adopts variable step-size adaptive algorithm, and then the three phase signal can be divided well. The accuracy and dynamic performance is testified by the results of simulation.

关 键 词：瞬时对称分量法 自适应滤波 变步长 

分 类 号：TM937[电气工程—电力电子与电力传动]