摘要
谐波检测是决定有源电力滤波器工作性能的关键环节,检测结果准确与否直接影响到其补偿精度及相关性能。提出一种基于改进同步谐波检测算法,通过控制算法实现基波电流与基波正序电压同步,从而达到消除谐波的目标。采用基于对称分量法的基波正序电压提取方法,无需使用锁相环以及坐标变换,整个基波正序电压分离过程简洁快速,并且可以根据电力用户对谐波补偿的需求,实现谐波的完全谐波消除和单位功率因数补偿,并提高系统功率因数。最后通过搭建MATLAB仿真模型和试验平台对所提方法在有源滤波器中的应用进行验证。结果表明能够达到良好的补偿效果。
Harmonic detection is a key link in determining the performance of active power filters,and the accuracy of the detection results directly affects its compensation accuracy and related performance.An improved synchronous harmonic detection algorithm was proposed.The fundamental current and the fundamental positive sequence voltage were synchronized through the control algorithm,so as to achieve the goal of eliminating harmonics.The fundamental positive-sequence voltage extraction method based on the symmetrical component method was adopted,without the use of phase-locked loop and coordinate transformation,the entire fundamental positive-sequence voltage separation process was simple and fast.According to the needs of power users for harmonic compensation,complete harmonic elimination and unit power factor compensation can be realized,and the system power factor can be improved.Finally,the application of the proposed method in active power filter was verified by building MATLAB simulation model and experimental platform.The results show that it can achieve well.
作者
王峰
张旭隆
曹言敬
Wang Feng;Zhang Xulong;Cao Yanjing(School of Electrical and Control Engineering,Xuzhou University of Technology,Xuzhou Jiangsu 221018,China)
出处
《电气自动化》
2023年第4期94-97,共4页
Electrical Automation
基金
国家自然科学基金煤炭联合基金培育项目(U1610113)
教育部产学合作协同育人项目(202101222023)。
关键词
有源电力滤波器
电网不平衡
谐波检测
改进同步法
active power filter
unbalanced grid voltage
harmonic detection
improved synchronization method
