LAPSE:2023.35895
Published Article
LAPSE:2023.35895
Analysis and Design of a New High Voltage Gain Interleaved DC−DC Converter with Three-Winding Coupled Inductors for Renewable Energy Systems
May 24, 2023
In this article, a new non-isolated interleaved DC−DC converter is proposed to provide a high voltage conversion ratio in renewable energy systems. The converter configuration is composed of a two-phase interleaved boost converter integrating a voltage-lift capacitor and three-winding coupled inductor-based voltage multiplier modules to achieve high step-up voltage conversion and reduce voltage stresses on the semiconductors (switches and diodes). The converter can achieve a high voltage conversion ratio when working at a proper duty ratio. The voltage stresses on the switches are significantly lower than the output voltage, which enables engineers to adopt low-voltage-rating MOSFETs with low on-state resistance. The switches can turn on under zero-current switching (ZCS) conditions because of the leakage inductor series reducing switching losses. Some diodes can naturally turn off under ZCS conditions to alleviate the reverse−recovery issue and to reduce reverse−recovery losses. The input current has small ripples due to the interleaved operation. The leakage inductor energy is recycled and voltage spikes on the switches are avoided. The proposed converter is suitable for applications in which high voltage gain, high efficiency and high power are required. The principle of operation, steady-state analysis and design considerations of the proposed converter are described in detail. In addition, a closed-loop controller is designed to reduce the effect of input voltage fluctuation and load change on the output voltage. Finally, a 1000 W laboratory prototype is built and tested. The theoretical analysis and the performance of the proposed converter were validated by the experimental results.
Keywords
closed-loop controller design, high voltage gain DC–DC converter, three-winding coupled inductor, zero-current switching
Suggested Citation
Chen SJ, Yang SP, Huang CM, Huang PS. Analysis and Design of a New High Voltage Gain Interleaved DC−DC Converter with Three-Winding Coupled Inductors for Renewable Energy Systems. (2023). LAPSE:2023.35895
Author Affiliations
Chen SJ: Department of Electrical Engineering, Kun Shan University, Tainan 710303, Taiwan [ORCID]
Yang SP: Department of Electrical Engineering, Kun Shan University, Tainan 710303, Taiwan; Green Energy Technology Research Center, Kun Shan University, Tainan 710303, Taiwan [ORCID]
Huang CM: Department of Electrical Engineering, Kun Shan University, Tainan 710303, Taiwan [ORCID]
Huang PS: Department of Electrical Engineering, Kun Shan University, Tainan 710303, Taiwan
Journal Name
Energies
Volume
16
Issue
9
First Page
3958
Year
2023
Publication Date
2023-05-08
Published Version
ISSN
1996-1073
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Original Submission
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PII: en16093958, Publication Type: Journal Article
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LAPSE:2023.35895
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doi:10.3390/en16093958
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May 24, 2023
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CC BY 4.0
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May 24, 2023
 
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Calvin Tsay
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