A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation
In this paper, the FHA model including the stray capacitance is analysed. The causes of the voltage gain distortion are studied. Limiting the working frequency is an effective method to solve the voltage gain distortion problem. A new type of the LLSC converter is proposed in the paper. It can regul...
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doaj-5a420bf848344ad89508a79a9eb7dc482021-03-30T02:45:05ZengIEEEIEEE Access2169-35362020-01-01811317511318210.1109/ACCESS.2020.30027599118947A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency VariationTianyu Zhu0https://orcid.org/0000-0002-4551-1344Yanchao Ji1Jianze Wang2Yiqi Liu3Harbin Institute of Technology, Harbin, ChinaHarbin Institute of Technology, Harbin, ChinaHarbin Institute of Technology, Harbin, ChinaNortheast Forestry University, Harbin, ChinaIn this paper, the FHA model including the stray capacitance is analysed. The causes of the voltage gain distortion are studied. Limiting the working frequency is an effective method to solve the voltage gain distortion problem. A new type of the LLSC converter is proposed in the paper. It can regulate the voltage at a constant frequency. At the same time, the soft switch can be realized if the parameter design is reasonable. The proposed converter can overcome the voltage gain distortion problem and obtain the high efficiency at the light load condition. Some mathematical analyses are used to prove that the proposed converter can avoid the voltage gain distortion problems. The simulation and experimental results based on a 200W LLSC converter prototype confirm the correctness of the topology.https://ieeexplore.ieee.org/document/9118947/Constant-frequency voltage regulationsoft switchingvoltage gain distortionhigh efficiency |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tianyu Zhu Yanchao Ji Jianze Wang Yiqi Liu |
spellingShingle |
Tianyu Zhu Yanchao Ji Jianze Wang Yiqi Liu A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation IEEE Access Constant-frequency voltage regulation soft switching voltage gain distortion high efficiency |
author_facet |
Tianyu Zhu Yanchao Ji Jianze Wang Yiqi Liu |
author_sort |
Tianyu Zhu |
title |
A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation |
title_short |
A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation |
title_full |
A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation |
title_fullStr |
A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation |
title_full_unstemmed |
A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation |
title_sort |
new llsc series quasi-resonant converter with narrow switching frequency variation |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2020-01-01 |
description |
In this paper, the FHA model including the stray capacitance is analysed. The causes of the voltage gain distortion are studied. Limiting the working frequency is an effective method to solve the voltage gain distortion problem. A new type of the LLSC converter is proposed in the paper. It can regulate the voltage at a constant frequency. At the same time, the soft switch can be realized if the parameter design is reasonable. The proposed converter can overcome the voltage gain distortion problem and obtain the high efficiency at the light load condition. Some mathematical analyses are used to prove that the proposed converter can avoid the voltage gain distortion problems. The simulation and experimental results based on a 200W LLSC converter prototype confirm the correctness of the topology. |
topic |
Constant-frequency voltage regulation soft switching voltage gain distortion high efficiency |
url |
https://ieeexplore.ieee.org/document/9118947/ |
work_keys_str_mv |
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