【摘要】 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。更多还原

【Abstract】 Veracity and real-time requirements for the harmonic detection are the most important factors to influence the active power filter. This paper adopts an exponential average low pass filter and a cascade form to effectively solve the conflict between the veracity of harmonic detection and real-time requirements and the finite word length of DSP design. A DSP based digital low pass filter is then presented for high performance harmonic detection in a series hybrid active power filter. The experiment results validate the theoretical analysis.更多还原