期刊名称：International Journal of Electronics and Computer Science Engineering
电子版ISSN：2277-1956
出版年度：2014
卷号：3
期号：3
页码：238-243
出版社：Buldanshahr : IJECSE
摘要：Ordinary techniques applied for harmonics measurement and assessment such as FFT have significant errors in present of time-varying harmonics due to the time-windows functional. In this paper, a Kalman filter-based algorithm is developed and realized for measuring time-varying harmonics. The efficiency of the anticipated algorithm has been successfully analyzed in off-line mode by various computer simulations. Based on this algorithm, a prototype harmonic analyzer has been designed and used for on-line harmonic monitoring and assessment studies. To assess the strictness of time-varying harmonics, cumulative time indices that are computed in real-time using the output of the analyzer are proposed. Also, an auto-synchronization algorithm is proposed to convoy the Kalman filter algorithm in order to eliminate the errors occurred due to the variations in the incoming signal frequency.
关键词：Harmonic Analyzer; Time Varying; Kalman Filter; MATLAB; DSP
