一种基于改进滤波的单相谐波检测方法  

A Single-phase Harmonic Detection Method Based on Improved Filtering

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作  者:蒋颂晴 王海欣[1] 黄海宏[1] JIANG Song-qing;WANG Hai-xin;HUANG Hai-hong(Hefei University of Technology,Hefei 230009,China)

机构地区:[1]合肥工业大学,电气与自动化工程学院,安徽合肥230009

出  处:《电力电子技术》2023年第11期16-18,共3页Power Electronics

基  金:国家自然科学基金(51177037)。

摘  要:随着电力电子设备的广泛应用,基于三相四线制系统的有源电力滤波器(APF)不仅需要对电网电流中的谐波和无功进行补偿,还需要保证电网三相有功电流的动态平衡。传统单相谐波检测方法会使检测结果中含有二次交流量,进而导致电网电流产生3次谐波。为解决该问题,提出一种基于改进滤波的单相谐波检测方法。通过反馈迭代,基本消除了传统方法检测结果中的2次交流量,提高了谐波检测的精度。在Matlab中仿真验证了该检测方法的正确性,并在以DSP为控制芯片的实验平台验证了该检测方法的可行性。With the wide application of power electronic equipment,the active power filter(APF)based on the three-phase four-wire system not only needs to compensate the harmonics and reactive power in the grid current,but also needs to ensure the dynamic balance of the three-phase active current in the power grid.Traditional single-phase har-monic detection methods will make the detection results contain the secondary AC value,which leads to the third harmonic generation of the grid current.To solve this problem,a single-phase harmonic detection method based on im-proved filtering is proposed.Through the feedback iteration,the secondary AC value in the traditional detection results is basically eliminated,and the accuracy of harmonic detection is improved.The correctness of the detection method is verified by simulation in Matlab,and the feasibility of the detection method is verified by the experimental platform with DSP as the control chip.

关 键 词:有源电力滤波器 谐波检测 改进滤波 

分 类 号:TN713[电子电信—电路与系统]

 

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