Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control
A CLLC resonant converter’s gain is easily influenced by the operating frequency, and when the operating frequency is adjusted over a wide range, the efficiency of the converter is greatly reduced. Traditional closed-loop control strategies also have disadvantages such as slow dynamic response and v...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/18/2874 |
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| author | Longxiang Wang Wenguang Luo Dan Huang |
| author_facet | Longxiang Wang Wenguang Luo Dan Huang |
| author_sort | Longxiang Wang |
| collection | DOAJ |
| description | A CLLC resonant converter’s gain is easily influenced by the operating frequency, and when the operating frequency is adjusted over a wide range, the efficiency of the converter is greatly reduced. Traditional closed-loop control strategies also have disadvantages such as slow dynamic response and vulnerability to load. In this paper, a high-order sliding mode control (SMC) design method is proposed based on the current problems and the characteristics of automotive CLLC resonant converters. A sliding mode surface based on the output voltage characteristics of the CLLC converter includes higher-order differential terms for voltage and current and an error integral term for the output voltage, which reduces the operating frequency range of the converter and improves its dynamic responsiveness, thus increasing its efficiency. In order to verify the accuracy of the algorithm, a simulation model is built in MATLAB to verify the stability of the controller by varying the input voltage and the magnitude of the load and to verify the dynamics by abruptly varying parameters such as load and voltage. Comparing high-order SMC with PID control also shows that high-order SMC is more suitable for automotive converters. |
| first_indexed | 2024-03-10T00:12:33Z |
| format | Article |
| id | doaj.art-e385c618b7814208955164031105ff5f |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T00:12:33Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-e385c618b7814208955164031105ff5f2023-11-23T15:58:05ZengMDPI AGElectronics2079-92922022-09-011118287410.3390/electronics11182874Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode ControlLongxiang Wang0Wenguang Luo1Dan Huang2School of Automation, Guangxi University of Science and Technology, Liuzhou 545000, ChinaSchool of Automation, Guangxi University of Science and Technology, Liuzhou 545000, ChinaSchool of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510000, ChinaA CLLC resonant converter’s gain is easily influenced by the operating frequency, and when the operating frequency is adjusted over a wide range, the efficiency of the converter is greatly reduced. Traditional closed-loop control strategies also have disadvantages such as slow dynamic response and vulnerability to load. In this paper, a high-order sliding mode control (SMC) design method is proposed based on the current problems and the characteristics of automotive CLLC resonant converters. A sliding mode surface based on the output voltage characteristics of the CLLC converter includes higher-order differential terms for voltage and current and an error integral term for the output voltage, which reduces the operating frequency range of the converter and improves its dynamic responsiveness, thus increasing its efficiency. In order to verify the accuracy of the algorithm, a simulation model is built in MATLAB to verify the stability of the controller by varying the input voltage and the magnitude of the load and to verify the dynamics by abruptly varying parameters such as load and voltage. Comparing high-order SMC with PID control also shows that high-order SMC is more suitable for automotive converters.https://www.mdpi.com/2079-9292/11/18/2874CLLC resonant converterextended describing function (EDF) methodhigh-order SMC |
| spellingShingle | Longxiang Wang Wenguang Luo Dan Huang Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control Electronics CLLC resonant converter extended describing function (EDF) method high-order SMC |
| title | Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control |
| title_full | Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control |
| title_fullStr | Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control |
| title_full_unstemmed | Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control |
| title_short | Research on Automotive Bidirectional CLLC Resonant Converters Based on High-Order Sliding Mode Control |
| title_sort | research on automotive bidirectional cllc resonant converters based on high order sliding mode control |
| topic | CLLC resonant converter extended describing function (EDF) method high-order SMC |
| url | https://www.mdpi.com/2079-9292/11/18/2874 |
| work_keys_str_mv | AT longxiangwang researchonautomotivebidirectionalcllcresonantconvertersbasedonhighorderslidingmodecontrol AT wenguangluo researchonautomotivebidirectionalcllcresonantconvertersbasedonhighorderslidingmodecontrol AT danhuang researchonautomotivebidirectionalcllcresonantconvertersbasedonhighorderslidingmodecontrol |