Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology
Bidirectional DC/DC converters are widely adopted in new energy power generation systems. Because of the low conversion efficiency and non-isolation for conventional, bidirectional DC/DC converters in the photovoltaic energy storage complementary system, this paper proposes a bidirectional isolation...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/17/6436 |
| _version_ | 1797495524449845248 |
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| author | Di Xie Liangliang Wang Zhi Zhang Shoumo Wang Longyun Kang Jigang Yao |
| author_facet | Di Xie Liangliang Wang Zhi Zhang Shoumo Wang Longyun Kang Jigang Yao |
| author_sort | Di Xie |
| collection | DOAJ |
| description | Bidirectional DC/DC converters are widely adopted in new energy power generation systems. Because of the low conversion efficiency and non-isolation for conventional, bidirectional DC/DC converters in the photovoltaic energy storage complementary system, this paper proposes a bidirectional isolation LLC converter topology, with compensating inductance for the energy storage system; it has excellent characteristics, such as wide input voltage range and soft switching in full-load range. First, an AC equivalent model based on the fundamental wave equivalent method is established to derive the voltage gain. Meanwhile, a small signal model is also built to design a reasonably closed-looped controller. Finally, the improved bidirectional LLC resonant converter is applied to the photovoltaic energy storage complementary system. The correctness and feasibility for the bidirectional LLC converter topology under the proposed charging and discharging control strategy of the DC bus are verified by simulation and experimental results. |
| first_indexed | 2024-03-10T01:51:13Z |
| format | Article |
| id | doaj.art-9f1e7a03191343da924c1f335f5ead00 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:51:13Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-9f1e7a03191343da924c1f335f5ead002023-11-23T13:06:09ZengMDPI AGEnergies1996-10732022-09-011517643610.3390/en15176436Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control TechnologyDi Xie0Liangliang Wang1Zhi Zhang2Shoumo Wang3Longyun Kang4Jigang Yao5New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, ChinaGuangdong HYNN Technologies Co., Ltd., Dongguan 523808, ChinaDepartment of Electrical Engineering and Automation, Dongguan University of Technology, Dongguan 523808, ChinaGuangdong HYNN Technologies Co., Ltd., Dongguan 523808, ChinaNew Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, ChinaGuangdong HYNN Technologies Co., Ltd., Dongguan 523808, ChinaBidirectional DC/DC converters are widely adopted in new energy power generation systems. Because of the low conversion efficiency and non-isolation for conventional, bidirectional DC/DC converters in the photovoltaic energy storage complementary system, this paper proposes a bidirectional isolation LLC converter topology, with compensating inductance for the energy storage system; it has excellent characteristics, such as wide input voltage range and soft switching in full-load range. First, an AC equivalent model based on the fundamental wave equivalent method is established to derive the voltage gain. Meanwhile, a small signal model is also built to design a reasonably closed-looped controller. Finally, the improved bidirectional LLC resonant converter is applied to the photovoltaic energy storage complementary system. The correctness and feasibility for the bidirectional LLC converter topology under the proposed charging and discharging control strategy of the DC bus are verified by simulation and experimental results.https://www.mdpi.com/1996-1073/15/17/6436photovoltaicenergy storageLLCbidirectional DC/DC converter |
| spellingShingle | Di Xie Liangliang Wang Zhi Zhang Shoumo Wang Longyun Kang Jigang Yao Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology Energies photovoltaic energy storage LLC bidirectional DC/DC converter |
| title | Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology |
| title_full | Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology |
| title_fullStr | Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology |
| title_full_unstemmed | Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology |
| title_short | Photovoltaic Energy Storage System Based on Bidirectional LLC Resonant Converter Control Technology |
| title_sort | photovoltaic energy storage system based on bidirectional llc resonant converter control technology |
| topic | photovoltaic energy storage LLC bidirectional DC/DC converter |
| url | https://www.mdpi.com/1996-1073/15/17/6436 |
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