Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter
A phase-shifted dual-bridge series resonant DC-DC converter (DBSRC) is a competitive candidate for applications of an energy storage system. At the request of a step-load-change command such as the start-up and power-level change, the converter may suffer from large-amplitude transient oscillations...
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/5/822 |
| _version_ | 1797475284815970304 |
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| author | Hui Xu Shengzhi Zhou Xiaodong Li Hao Chen Song Hu |
| author_facet | Hui Xu Shengzhi Zhou Xiaodong Li Hao Chen Song Hu |
| author_sort | Hui Xu |
| collection | DOAJ |
| description | A phase-shifted dual-bridge series resonant DC-DC converter (DBSRC) is a competitive candidate for applications of an energy storage system. At the request of a step-load-change command such as the start-up and power-level change, the converter may suffer from large-amplitude transient oscillations due to improper transient modulation. Furthermore, the DC bias current and overshoot current/voltage in the resonant tank and transformer caused by oscillations may result in transformer saturation and poor dynamic performance. To solve these problems, two fast transient modulation (FTM) methods are proposed in this paper. First, based on the steady-state analysis of the converter with phase-shift control, the current and voltage trajectory of the resonant capacitor can be obtained. Then, the detailed principles of two FTM methods are explained for achieving a smooth transition. Through the adjustment of the durations of the adjacent switching intervals temporarily, the transient trajectory can be predicted and is expected to match the destination trajectory within one switching period. Consequently, the proposed FTM methods enable the converter to move from one steady state to another instantly and the step-load-change transition can be an overshoot-free procedure. Finally, both simulation and experimental tests prove that the two modulation methods can effectively eliminate DC bias current and overshoot current/voltage in the DBSRC transient process and obtain a fast transient response. |
| first_indexed | 2024-03-09T20:42:55Z |
| format | Article |
| id | doaj.art-912a5458570b4deda2ce9e94656d2b28 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T20:42:55Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-912a5458570b4deda2ce9e94656d2b282023-11-23T22:54:28ZengMDPI AGElectronics2079-92922022-03-0111582210.3390/electronics11050822Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant ConverterHui Xu0Shengzhi Zhou1Xiaodong Li2Hao Chen3Song Hu4School of Electrical Engineering and Automation, Changshu Institute of Technology, Suzhou 215000, ChinaFaculty of Information Technology, Macau University of Science and Technology, Macau 999078, ChinaFaculty of Information Technology, Macau University of Science and Technology, Macau 999078, ChinaSchool of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Electrical Engineering and Automation, Changshu Institute of Technology, Suzhou 215000, ChinaA phase-shifted dual-bridge series resonant DC-DC converter (DBSRC) is a competitive candidate for applications of an energy storage system. At the request of a step-load-change command such as the start-up and power-level change, the converter may suffer from large-amplitude transient oscillations due to improper transient modulation. Furthermore, the DC bias current and overshoot current/voltage in the resonant tank and transformer caused by oscillations may result in transformer saturation and poor dynamic performance. To solve these problems, two fast transient modulation (FTM) methods are proposed in this paper. First, based on the steady-state analysis of the converter with phase-shift control, the current and voltage trajectory of the resonant capacitor can be obtained. Then, the detailed principles of two FTM methods are explained for achieving a smooth transition. Through the adjustment of the durations of the adjacent switching intervals temporarily, the transient trajectory can be predicted and is expected to match the destination trajectory within one switching period. Consequently, the proposed FTM methods enable the converter to move from one steady state to another instantly and the step-load-change transition can be an overshoot-free procedure. Finally, both simulation and experimental tests prove that the two modulation methods can effectively eliminate DC bias current and overshoot current/voltage in the DBSRC transient process and obtain a fast transient response.https://www.mdpi.com/2079-9292/11/5/822DC biastransient performancetransient modulation |
| spellingShingle | Hui Xu Shengzhi Zhou Xiaodong Li Hao Chen Song Hu Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter Electronics DC bias transient performance transient modulation |
| title | Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter |
| title_full | Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter |
| title_fullStr | Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter |
| title_full_unstemmed | Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter |
| title_short | Transient Modulation for the Step-Load-Change Process in a Dual-Bridge Series Resonant Converter |
| title_sort | transient modulation for the step load change process in a dual bridge series resonant converter |
| topic | DC bias transient performance transient modulation |
| url | https://www.mdpi.com/2079-9292/11/5/822 |
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