一种基于瞬时无功功率理论谐波检测的离散滤波方法

根据三相三线电路系统对称分量法，以瞬时无功功率理论为基础，指出基波和各次谐波电流的正序及负序分量离散检测方法。用复化积分算法取代传统的低通滤波器，具有载止频率特性好，检测结果稳定，易于编程实现等特点。利用MATLAB动态仿真工具对不同检测方法进行对比分析，结果表明：该方法比传统的检测方法具有更快的响应速度。实验验证了该方法的正确性。

A discrete filtering method for harmonics detection based on instantaneous reactive power theory

This paper proposes a discrete filtering method for harmonic current detection based on instantaneous reactive power theory. This method employs complex integral algorithm instead of traditional low|pass filtering method. It has the advantages such as better cut|off characteristics,more stable output,and easier implementation in digital programming. Simulations based MATLAB dynamic models show that this method has better dynamic performance as compared with traditional methods. Experimental results also verify the validity of proposed method.