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一种无电压传感器的改进型三相APF控制方法
引用本文:邵伟恒,邹伟,吴上泉.一种无电压传感器的改进型三相APF控制方法[J].电气自动化,2016(3):67-70.
作者姓名:邵伟恒  邹伟  吴上泉
作者单位:工业和信息化部电子第五研究所,广东 广州,510610
摘    要:对于传统的并联三相有源电力滤波器(Active Power Filter,APF),谐波电流提取理论和补偿电流的实时跟踪策略一直是研究的热点。现有的方法都不能很好地解决谐波电流提取精确度和补偿电流实时性的矛盾。此外,如何降低有源电力滤波器的开关频率也是需要解决的技术难题。为此,在分析传统有源电力滤波器原理的基础上,提出了一种无三相交流电压传感器的改进型三相APF控制方法。据设计的APF具有良好的准确度和实时性,并能从根本上解决开关频率高的问题。仿真结果证明了控制方案的正确性和有效性。

关 键 词:有源电力滤波器  开关频率  无电压传感器  谐波电流  补偿电流

An Improved Three-phase APF Control Method Based on the No-voltage Sensor
Abstract:For traditional parallel three-phase active power filter (APF),harmonic current extraction theory and the strategy of real-time tracking of compensation current have been a hot point for research.Existing methods cannot solve satisfactorily the conflict between harmonic current extraction accuracy and the real-time performance of compensation current.Furthermore,how to lower the switching frequency of the APF is also a technical challenge.Based on an analysis of the principle of the traditional APF,this paper presents an improved three-phase APF control method based on the no-three-phase-AC-voltage sensor.The APF designed in this new method has good accuracy and real-time performance,and can radically solve the problem of high switching frequency.Simulation results prove the correctness and effectiveness of the proposed control scheme.
Keywords:active power filter  switching frequency  no voltage sensor  harmonic current  compensation current
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