Grid voltage synchronization algorithms for grid-connected power converters

被引：0
|
作者：
Wen W. [1 ,2 ]
Zhang Y. [2 ]
Wang L. [3 ]
Zhao Z. [1 ]
Nie J. [1 ,2 ]
机构：
[1] Department of Electrical Engineering, Tsinghua University, Beijing
[2] Department of Power Engineering, Chongqing Communication Institute, Chongqing
[3] Department of Mathematics and Information Engineering, Chongqing University of Education, Chongqing
来源：
Zhang, Yingchao (zhangyingchao@tsinghua.org.cn) | 1600年 / Tsinghua University卷 / 57期
关键词：
Adaptive frequency; Direct-current bias; Harmonic restraining; Phase-angle jump; Phase-locked-loop;
D O I：
10.16511/j.cnki.qhdxxb.2017.26.032
中图分类号：
学科分类号：
摘要：
An accurate and fast detection of the amplitude, frequency and phase angle of the grid voltage is crucial to assure the steady-state and dynamic performance of grid-connected power converters. This paper describes the classification of grid voltage synchronization algorithms, the principles and characteristics of phase-locked-loop (PLL) controllers, and the serious problems of PLL controllers such as frequency variations, unbalanced and distortied conditions, direct-current (DC) bias and phase-angle jumps with suppression methods to reduce these effects. The results show that PLL controllers based on synchronous reference frames or resonant controller are now widely used to track the grid voltage with multichannel-decoupling to suppress the harmonics and frequency fluctuations. A single-phase controller can be equivalent to a three-phase controller with new synchronization systems being more accurate, fast and robust. © 2017, Tsinghua University Press. All right reserved.
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页码：637 / 643
页数：6
相关论文
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