A Filtering Technique for Three-Phase Power Systems

被引:24
作者
Karimi-Ghartemani, Masoud [1 ]
Karimi, Houshang [2 ]
Bakhshai, Alireza R. [3 ]
机构
[1] Sharif Univ Technol, Dept Elect Engn, Tehran 113659363, Iran
[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
[3] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada
关键词
Antialiasing filter; symmetrical components; three-phase adaptive filter; three-phase phase-locked loop (3PLL); LOCKED LOOP SYSTEM; NOTCH FILTER;
D O I
10.1109/TIM.2008.2003331
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A novel filter for use in three-phase power systems is introduced. When the input to the filter is a balanced three-phase set of signals, the filter suppresses noise and distortions and extracts a smooth three-phase fundamental component. When the input signal to the filter is unbalanced, it extracts the fundamental positive-sequence component of the input signal. The filter also estimates the magnitude, phase angle, and frequency of the signal and adaptively follows the variations in all these three variables. The characteristics of the filter, including its mathematical equations, stability analysis, steady. state, and dynamic responses, are discussed in this paper. The filter highly attenuates the harmonics, unknown interharmonics, and distortions. However, an extension of the filter for full removal of harmonics and unknown interharmonics is also presented, and its operating principles are discussed. The structural simplicity and robustness of the filter make it desirable for power system applications. In addition to the wide applications in power systems, it. can specifically be used as an adaptive antialiasing filter for three-phase applications.
引用
收藏
页码:389 / 396
页数:8
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