摘要
在无功补偿技术中,对无功电流进行检测时,低通滤波器(LPF)的设计是关键问题之一。针对无功电流的检测方法,以瞬时无功理论为依托,对检测过程进行了推导。并通过Matlab编程设计了不同的IIR数字滤波器,对它们的设计思路、性能指标进行了对比研究,经过比较选出合适的LPF。选用以Quartus II 6.0为设计平台设计开发了基于现场可编程门阵列(FPGA)的数字低通滤波器,实验结果验证了设计方法的正确性和有效性。
In reactive power compensation technology,when refers to the reactive current detection,the design of the low-pass filter is one of the key issues.For the reactive current detection methods,the testing process which relies on the theory of instantaneous reactive power was derived in this paper.Different IIR digital filters were designed by Matlab.This paper gave out a comparative study on their design ideas and their performances,and selected the appropriate low-pass filter by the comparison.This paper designed and developed the digital low-pass filter which is based on field programmable gate array（FPGA） in the Quartus II 6.0 design platform,and the experimental results verified the correctness and validity of the design method.
出处
《江苏电机工程》
2011年第1期54-58,共5页
Jiangsu Electrical Engineering
关键词
无功电流检测
IIR数字滤波器
频率特性
FPGA
reactive current detection
IIR digital filters
frequency characteristics
field programmable gate array（FPGA）
