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자료유형
학술저널
저자정보
Yang Han (University of Electronic Science and Technology of China) Mingyu Luo (University of Electronic Science and Technology of China) Changqing Chen (State Grid Sichuan Electric Power Company) Aiting Jiang (University of Electronic Science and Technology of China) Xin Zhao (Aalborg University) Josep M. Guerrero (Aalborg University)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.16 No.5
발행연도
2016.9
수록면
1,904 - 1,917 (14page)

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The moving average filter (MAF) is widely utilized to improve the disturbance rejection capability of phase-locked loops (PLLs). This is of vital significance for the grid-integration and stable operation of power electronic converters to electric power systems. However, the open-loop bandwidth is drastically reduced after incorporating a MAF into the PLL structure, which makes the dynamic response sluggish. To overcome this shortcoming, some new techniques have recently been proposed to improve the transient response of MAF-based PLLs. In this paper, a comprehensive performance comparison of advanced MAF-based PLL algorithms is presented. This comparison includes HPLL, MPLC-PLL, QT1-PLL, and DMAF-PLL. Various disturbances, such as grid voltage sag, voltage flicker, harmonics distortion, phase-angle and frequency jumps, DC offsets and noise, are considered to experimentally test the dynamic performances of these PLL algorithms. Finally, an improved positive sequence extraction method for a HPLL under the frequency jumps scenario is presented to compensate for the steady-state error caused by non-frequency adaptive DSC, and a satisfactory performance has been achieved.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. OVERVIEW OF MAF-BASED PLLS
Ⅲ. PARAMETERS DESIGN GUIDELINES
Ⅳ. SEQUENCE EXTRACTION METHODS
Ⅴ. EXPERIMENTAL RESULTS AND DISCUSSIONS
Ⅵ. PERFORMANCE IMPROVEMENT OF THE HPLL USING AMPLITUDE ERROR COMPENSATION METHOD
Ⅶ. CONCLUSION
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