Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching
Multi-port DC power electronic transformer (PET) is a core equipment for achieving transformation of different voltage levels and flexible interconnection of different DC buses in a DC distribution system. It is capable of bidirectional energy flow, flexible regulation of power flow, port fault isol...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/2/400 |
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| _version_ | 1832588571313176576 |
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| author | Jialin Zhang Kunpeng Zha Xiaojun Tang Yuefeng Yang Lanfang Li Jiafei Li |
| author_facet | Jialin Zhang Kunpeng Zha Xiaojun Tang Yuefeng Yang Lanfang Li Jiafei Li |
| author_sort | Jialin Zhang |
| collection | DOAJ |
| description | Multi-port DC power electronic transformer (PET) is a core equipment for achieving transformation of different voltage levels and flexible interconnection of different DC buses in a DC distribution system. It is capable of bidirectional energy flow, flexible regulation of power flow, port fault isolation, and other functions. A new five-port DC transformer topology based on soft switching technology is proposed in this paper. In this topology, different DC voltage levels can be interconnected efficiently, such as 20 kV, 750 V, ±375 V, and 300 to 500 V adjustable. The control of each port is simple and flexible. The output voltage is stable, and they are independent of each other, which can improve the system reliability. The topology of the proposed multi-port DC transformer is introduced in detail. The working principle, control strategy, and parameter design method of the transformer are analyzed. Simulations and experimental results are provided to validate the theoretical analysis. |
| format | Article |
| id | doaj-art-a53b4e85f9324d70896fe8b7b05d74a3 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-a53b4e85f9324d70896fe8b7b05d74a32025-01-24T13:31:21ZengMDPI AGEnergies1996-10732025-01-0118240010.3390/en18020400Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft SwitchingJialin Zhang0Kunpeng Zha1Xiaojun Tang2Yuefeng Yang3Lanfang Li4Jiafei Li5School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaNARI Group Corporation, Nanjing 211106, ChinaSchool of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaChina Power NARI Purui Engineering Co., Ltd., Beijing 102299, ChinaChina Power NARI Purui Engineering Co., Ltd., Beijing 102299, ChinaChina Power NARI Purui Engineering Co., Ltd., Beijing 102299, ChinaMulti-port DC power electronic transformer (PET) is a core equipment for achieving transformation of different voltage levels and flexible interconnection of different DC buses in a DC distribution system. It is capable of bidirectional energy flow, flexible regulation of power flow, port fault isolation, and other functions. A new five-port DC transformer topology based on soft switching technology is proposed in this paper. In this topology, different DC voltage levels can be interconnected efficiently, such as 20 kV, 750 V, ±375 V, and 300 to 500 V adjustable. The control of each port is simple and flexible. The output voltage is stable, and they are independent of each other, which can improve the system reliability. The topology of the proposed multi-port DC transformer is introduced in detail. The working principle, control strategy, and parameter design method of the transformer are analyzed. Simulations and experimental results are provided to validate the theoretical analysis.https://www.mdpi.com/1996-1073/18/2/400DC distribution networkDC transformermulti-port convertersoft switchingflexible interconnection |
| spellingShingle | Jialin Zhang Kunpeng Zha Xiaojun Tang Yuefeng Yang Lanfang Li Jiafei Li Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching Energies DC distribution network DC transformer multi-port converter soft switching flexible interconnection |
| title | Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching |
| title_full | Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching |
| title_fullStr | Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching |
| title_full_unstemmed | Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching |
| title_short | Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching |
| title_sort | topology and control strategy of multi port dc power electronic transformer based on soft switching |
| topic | DC distribution network DC transformer multi-port converter soft switching flexible interconnection |
| url | https://www.mdpi.com/1996-1073/18/2/400 |
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