基于EEMD算法的三相四线制APF谐波检测  

Harmonic detection of three-phase four-wire APF based on EEMD algorithm

作　　者：杨新华[1,2] 委晓翠 孙艳军[1] 吴丽珍[1,2] 谢兴峰[1,2] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]甘肃省工业过程先进控制重点实验室,甘肃兰州730050

出　　处：《兰州理工大学学报》2016年第1期96-99,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51467009);甘肃省工业过程先进控制重点实验室项目(XJK201519)

摘　　要：针对总体平均经验模态分解(EEMD)法进行信号分解时计算量大、实时性差的问题,提出在EEMD分解过程中,通过对利用三次样条拟合曲线求取上下包络线的样条函数进行优化,来减小EEMD算法的运算时间.并将该算法用于提取三相四线制APF谐波中的基波分量,提高谐波检测的有效性和实时性.为验证该方法的检测效果,将EEMD算法和基于瞬时无功功率理论的ip-iq算法分别应用于提取基波分量.检测结果表明,所提方法的检测精度更高、动态响应速度更快.Ensemble empirical mode decomposition （EEMD） method has such problems as large amount of calculation and poor real-time performance for signal decomposition. Therefore in the EEMD decompo- sition process, the spline function of upper-and lower-envelope fitted with cubic spline curves was opti- mized to reduce the computation time. And the algorithm was used to extract the fundamental component of harmonic current in three-phase four-wire APF, to improve the effectiveness and real-time performance of harmonic detection. In order to verify its actual detection effect, the EEMD algorithm and the iv-iq algo- rithm based on instantaneous reactive power theory were respectively used to extract the fundamental component. The detection result showed that the proposed method would have higher detection accuracy and faster dynamic response.

关 键 词：EEMD算法 谐波检测 拟合曲线优化 基波提取 

分 类 号：TM933[电气工程—电力电子与电力传动]