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谐波检测的准确性和实时性是影响有源电力滤波器的重要因素。文中采用指数平均低通滤波器,并利用级联技术,解决了数字信号处理器有限字长与谐波提取的准确性和实时性之间的矛盾。将其用于串联混合型有源电力滤波器中,实现了高性能的谐波检测。实验结果证明了所提出的理论的正确性。
Harmonic detection accuracy and real-time is an important factor affecting the active power filter. In this paper, exponential average low-pass filter, and the use of cascaded technology to solve the finite-length digital signal processor and harmonic extraction accuracy and real-time contradictions. It is used in a series hybrid active power filter to achieve high performance harmonic detection. The experimental results prove the correctness of the proposed theory.