摘要
随着微网的快速发展,其电能质量越来越受到人们的重视。论文分析了三相SPWM变流器在微网中所产生的谐波量以及危害,利用一种改进的自适应陷波器谐波检测技术检测到变流器产生的谐波,提出了使用串联型有源电力滤波器与LC滤波器相结合的谐波抑制策略。最后结合系统构成利用Matlab对变流器输出电流进行了仿真,通过自适应检测发现变流器输出的谐波量明显减少,而且加入混合滤波器后得到的线电流的THD值小于5%,验证了该谐波抑制策略的有效性。
With the rapid development of micro-grid,the power quality of micro-grid becomes more and more important.This paper analyzes the harmonic and the damage that the three-phase SPWM converters produce in micro-grid.Then the harmonic suppression strategies of the use of the combination of series active power filter and LC filter are pointed out by using an improved adaptive harmonic detection to detect harmonic of the converters.Finally,combining with MATLAB system structure of converters,concludes that the output current of the converters is simulated,and through the adaptive detection,the output harmonic content of converters is decreased significantly.Meanwhile,resulting from the mixed filter,THD value of the line current is less than 5%,which verifies the effectiveness of the harmonic suppression strategies.
出处
《舰船电子工程》
2013年第7期135-138,共4页
Ship Electronic Engineering
基金
湖北省教育厅重点项目(编号:D20121403)资助
湖北工业大学博士科研启动基金(编号:BSQD12018)资助
关键词
微网变流器
谐波检测
谐波抑制
混合滤波器
microgrid converter
harmonic detection
harmonic suppression
hybrid filter
