中国电机工程学报Issue(6)：1473-1481,9.DOI:10.13334/j.0258-8013.pcsee.2015.06.023
一种适用于新型直接交交型有源滤波器的逐次分序谐波检测算法
A Harmonic Detection Method by Separated Sequence and Order Suitable for Novel Direct AC-AC Based Active Power Filters
摘要
Abstract
Active Power Filter (APF) is a new kind of equipment used in power grids to realize harmonic control function. As a key technology in APF, the harmonic detection algorithm directly determines the overall performance of the system. A new harmonic detection algorithm was proposed for the newly emerging direct AC-AC based APF. It is based on the combination of an improved sliding-window discrete Fourier transform (ISDFT) and symmetrical component method (SCM), which can realize individual fast detection of each sequence components for different orders of harmonics. The algorithm is simpler and faster than the traditional detection ones. It is superior especially when the grid is unbalanced and large numbers of harmonics needs to be detected. Furthermore, the new method can also be used in traditional APF to get rapid harmonic detection. The new AC-AC based APF was introduced in this article as a background, then the principle of the new algorithm was analyzed in details and a comparative study between the new algorithm and the traditional method was given. By applying the proposed harmonic detection method, an overall solution was derived for the novel direct AC-AC based APF. Finally, simulation results were given to verify the correctness of the new method. Also, a 3kW AC-AC based APF prototype was built to validate the effectiveness of the method.关键词
直接交交型有源滤波器/谐波检测方法/逐次分序谐波/改进的滑窗离散傅里叶变换法/对称分量法Key words
direct AC-AC based APF/harmonic detection method/separated sequence and order harmonic/improved sliding-DFT/symmetrical component method分类
信息技术与安全科学引用本文复制引用
吕自波,李楚杉,邓焰,何湘宁,谢瑞..一种适用于新型直接交交型有源滤波器的逐次分序谐波检测算法[J].中国电机工程学报,2015,(6):1473-1481,9.基金项目
国家863高技术基金项目(2011AA050202)。The National High Technology Research and Development of China 863 Program (2011AA050202) （2011AA050202）
