A New High-Gain, High-Efficiency SEPIC-Based DC-DC Converter for Renewable Energy Applications

This article proposes a new configuration of quasi-resonant high-gain high-efficiency single-ended primary inductor converter (QRHGHE-SEPIC)-based dc-dc converter with continuous input current. The presented single-switch topology uses a coupled-inductor (CI), a voltage multiplier integrated with a...

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Published inIEEE journal of emerging and selected topics in industrial electronics (Print) Vol. 2; no. 4; pp. 567 - 578
Main Authors Hasanpour, Sara, Forouzesh, Mojtaba, Siwakoti, Yam, Blaabjerg, Frede
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Capacitors
Circuits
Clamps
Conversion ratio
Converters
coupled-inductor
DC-DC power converters
Efficiency
Energy dissipation
High gain
High-voltage techniques
Inductance
Inductors
Leakage
quasi-resonance
Step-up dc–dc converter
Switches
Switching
Topology
Voltage gain
Zero current switching
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Abstract This article proposes a new configuration of quasi-resonant high-gain high-efficiency single-ended primary inductor converter (QRHGHE-SEPIC)-based dc-dc converter with continuous input current. The presented single-switch topology uses a coupled-inductor (CI), a voltage multiplier integrated with a regenerative passive lossless clamp circuit to enhance the voltage conversion ratio. In the proposed converter, the main power switch turns on at zero current switching. Moreover, by adopting a quasi-resonance (QR) operation between the leakage inductor of the CI and the middle capacitors, the current value of the main switch at turn- off moment is alleviated. In addition, the leakage inductance slows down the turn- off slope of all diodes and hence there is no reverse recovery problem in the proposed converter. Due to soft-switching operation in all switching components, the power dissipations in the converter are significantly alleviated. Thus, the proposed QRHGHE-SEPIC can provide high voltage gain while achieving a high efficiency. Steady-state analysis, comprehensive comparisons with other related converters, and design considerations are discussed in detail. Finally, to verify the validity of the theoretical analysis, a 160 W/200 V sample prototype is demonstrated at the switching frequency of 60 kHz and with voltage gain of 10.
AbstractList This article proposes a new configuration of quasi-resonant high-gain high-efficiency single-ended primary inductor converter (QRHGHE-SEPIC)-based dc–dc converter with continuous input current. The presented single-switch topology uses a coupled-inductor (CI), a voltage multiplier integrated with a regenerative passive lossless clamp circuit to enhance the voltage conversion ratio. In the proposed converter, the main power switch turns on at zero current switching. Moreover, by adopting a quasi-resonance (QR) operation between the leakage inductor of the CI and the middle capacitors, the current value of the main switch at turn- off moment is alleviated. In addition, the leakage inductance slows down the turn- off slope of all diodes and hence there is no reverse recovery problem in the proposed converter. Due to soft-switching operation in all switching components, the power dissipations in the converter are significantly alleviated. Thus, the proposed QRHGHE-SEPIC can provide high voltage gain while achieving a high efficiency. Steady-state analysis, comprehensive comparisons with other related converters, and design considerations are discussed in detail. Finally, to verify the validity of the theoretical analysis, a 160 W/200 V sample prototype is demonstrated at the switching frequency of 60 kHz and with voltage gain of 10.
Author Hasanpour, Sara
Forouzesh, Mojtaba
Blaabjerg, Frede
Siwakoti, Yam
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  surname: Blaabjerg
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  organization: Department of Energy Technology, Aalborg University, Aalborg, Denmark
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Snippet This article proposes a new configuration of quasi-resonant high-gain high-efficiency single-ended primary inductor converter (QRHGHE-SEPIC)-based dc-dc...
This article proposes a new configuration of quasi-resonant high-gain high-efficiency single-ended primary inductor converter (QRHGHE-SEPIC)-based dc–dc...
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SubjectTerms Capacitors
Circuits
Clamps
Conversion ratio
Converters
coupled-inductor
DC-DC power converters
Efficiency
Energy dissipation
High gain
High-voltage techniques
Inductance
Inductors
Leakage
quasi-resonance
Step-up dc–dc converter
Switches
Switching
Topology
Voltage gain
Zero current switching
Title A New High-Gain, High-Efficiency SEPIC-Based DC-DC Converter for Renewable Energy Applications
URI https://ieeexplore.ieee.org/document/9416729
https://www.proquest.com/docview/2575982550
Volume 2
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