A High Efficiency DC/DC Converter for High Voltage Gain High Current Applications

Yaxiao Qin; Yun Yang; Sinan Li; Ying Huang; Siew-Chong Tan; S.Y.Ron Hui

doi:10.1109/JESTPE.2019.2908416

A High Efficiency DC/DC Converter for High Voltage Gain High Current Applications

Yaxiao Qin, Yun Yang, Sinan Li, Ying Huang, Siew-Chong Tan, S.Y.Ron Hui

Department of Electronic & Electrical Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (SciVal)

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Abstract

A new class of high-voltage-gain dc-dc converters for high-efficiency and transformer-less dc-dc applications, where large voltage step-up ratios are required, is presented in this paper. The converter is derived from the hybrid integration of a switched-capacitor converter and a boost converter. It features high step-up voltage conversion ratio with a moderate duty cycle, nonpulsating input current, low-voltage stress on all of the switches, easy implementation of control and driving circuits, scalability for high-current high-power applications, and low cost due to reduced components via combination of a two-stage converter into a single-stage converter. Full soft-charging operation and minimal device voltage stresses are achieved under all operating conditions. Steady-state operations of the converter are comprehensively analyzed. A 300-W prototype of a 19-time converter achieving the peak efficiency of 96.1% is built. Both simulation and experimental results validating the theoretical analysis and operation of the converter are provided.

Original language	English
Article number	8678676
Pages (from-to)	2812-2823
Number of pages	12
Journal	IEEE Journal of Emerging and Selected Topics in Power Electronics
Volume	8
Issue number	3
Early online date	1 Apr 2019
DOIs	https://doi.org/10.1109/JESTPE.2019.2908416
Publication status	Published - 30 Sept 2020

Bibliographical note

Funding Information:
Manuscript received October 22, 2018; revised January 14, 2019 and March 5, 2019; accepted March 7, 2019. Date of publication April 1, 2019; date of current version August 4, 2020. This work was supported by the Research Grants Council of the Hong Kong Special Administration Region, China, under Grant C7051-17G. Recommended for publication by Associate Editor Yijie Wang. (Corresponding author: Yaxiao Qin.) Y. Qin, Y. Yang, S. Li, Y. Huang, and S.-C. Tan are with the Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong (e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]).

Publisher Copyright:
© 2013 IEEE.

Keywords

DC microgrids
high efficiency
high-frequency hybrid converter
high-voltage conversion ratio
low cost
low-voltage stress

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/JESTPE.2019.2908416

08678676
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Accepted author manuscript, 2.51 MB

Cite this

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title = "A High Efficiency DC/DC Converter for High Voltage Gain High Current Applications",

abstract = "A new class of high-voltage-gain dc-dc converters for high-efficiency and transformer-less dc-dc applications, where large voltage step-up ratios are required, is presented in this paper. The converter is derived from the hybrid integration of a switched-capacitor converter and a boost converter. It features high step-up voltage conversion ratio with a moderate duty cycle, nonpulsating input current, low-voltage stress on all of the switches, easy implementation of control and driving circuits, scalability for high-current high-power applications, and low cost due to reduced components via combination of a two-stage converter into a single-stage converter. Full soft-charging operation and minimal device voltage stresses are achieved under all operating conditions. Steady-state operations of the converter are comprehensively analyzed. A 300-W prototype of a 19-time converter achieving the peak efficiency of 96.1% is built. Both simulation and experimental results validating the theoretical analysis and operation of the converter are provided.",

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note = "Funding Information: Manuscript received October 22, 2018; revised January 14, 2019 and March 5, 2019; accepted March 7, 2019. Date of publication April 1, 2019; date of current version August 4, 2020. This work was supported by the Research Grants Council of the Hong Kong Special Administration Region, China, under Grant C7051-17G. Recommended for publication by Associate Editor Yijie Wang. (Corresponding author: Yaxiao Qin.) Y. Qin, Y. Yang, S. Li, Y. Huang, and S.-C. Tan are with the Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong (e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]). Publisher Copyright: {\textcopyright} 2013 IEEE.",

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A High Efficiency DC/DC Converter for High Voltage Gain High Current Applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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