摘要
谐波检测方法在有源电力滤波器中起着关键作用,分析了基于瞬时无功理论的ipiq谐波检测方法的基本原理,并把他推广到任意次谐波的检测。仿真结果表明这种检测方法具有很好的稳态精度和动态性能,即使在电网频率变化的情况下,采用频率跟踪技术后ipiq法也可以快速准确地检测出电网总体谐波或任意次谐波分量。
It is very important for Active Power Filter （APF） to extract the harmonic currents accurately and quickly. The paper discusses the principle of ip -- iq harmonic extraction method based on Instantaneous Reactive Power Theory （IRPT） and expends it to extract a selective harmonic. The simulation proves the good dynamic performance and precision of the method, the harmonic current or selective harmonic currents can he extracted accurately and quickly with frequency tracing technique even if the frequency of power grid is changing.
出处
《现代电子技术》
2006年第6期131-133,141,共4页
Modern Electronics Technique
关键词
瞬时无功功率理论
IP-IQ法
谐波检测
任意次谐波
instantaneous reactive power theory
ip -iq method
harmonic extraction
selective harmonic
