非工频电源下功率因数测量方法的研究  

The Power Factor of Digital Measurement Method Research

作　　者：李志[1] 彭晓[2] 刘学飞[1] 

机构地区：[1]湖南工业大学电气与信息工程学院,株洲412008 [2]湖南工程学院电气信息学院,湘潭411101

出　　处：《湖南工程学院学报（自然科学版）》2015年第3期6-9,共4页Journal of Hunan Institute of Engineering(Natural Science Edition)

基　　金：湖南省科技计划项目(2013GK3033)

摘　　要：传统的功率因数测量方法通常是针对工频设备研究设计的,而对于非工频电源,传统的测量方法无法对其进行精准的测量.在传统功率因数测量方法的基础上,提出了基于Hanning窗的数字滤波器滤波,FFT变换计算功率因数的方法.利用MATLAB对改进后的算法进行仿真分析,对比仿真结果和理论值说明这种测量方法的精确性.The power factor of the traditional measuring method usually studies power frequency equipment design. For the industrial frequency power, the traditional method is unable to carry on the accurate measurement. On the basis of the traditional power factor measurement method, a digital filter based on Hanning window filtering is designed and FFT transformation calculation method of power factor is proposed. The MATLAB is used to simulate the improved algorithm. The simulation results and the theoretical value show the accuracy of this measurement method.

关 键 词：非工频电源 功率因数 数字滤波器 仿真 

分 类 号：TM933[电气工程—电力电子与电力传动]