High Step-Up 3-Phase Rectifier with Fly-Back Cells and Switched Capacitors for Small-Scaled Wind Generation Systems

Yi-Feng Wang, Liang Yang, Cheng-Shan Wang, Wei Li, Wei Qie and Shi-Jie Tu
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Yi-Feng Wang: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Liang Yang: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Cheng-Shan Wang: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Wei Li: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Wei Qie: State Grid Tianjin Electric Power Company, Tianjin 300072, China
Shi-Jie Tu: State Grid Jiangxi Electric Power Company Repair Branch, Jiangxi 330000, China

Energies, 2015, vol. 8, issue 4, 1-27

Abstract: This paper proposes and discusses a novel AC/DC converter suitable for small-scaled wind power generation system applications. By introducing flyback cells into the three-phase single-switch Boost circuit, the proposed converter is designed as single-stage and has both rectification and high step-up power conversion functions. It is able to obtain high voltage gain at low input voltage level, and high efficiency, low total harmonic distortion (THD) at rated power. The inherent power factor correction (PFC) is also determined, and can reach 0.99. Besides, since no electrolytic capacitor is employed and high voltage gain is achieved, the converter can also collect weak power at low input voltage in combination with energy storage devices, and contribute to a better low-wind-speed/low-power performance. Finally, a 400 W prototype is built to verify the theoretical analysis, and its efficiency is 87.6%, while THD is 7.4% at rated power.

Keywords: high step-up; three-phase AC/DC converter; rectifier; flyback; switched capacitor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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