Research on the black start of DC transformers based on soft converter control
The DC transformers with dual active bridge （DAB） topology is characterized by zero voltage switching （ZVS） and provides the basis for realizing lossless turn-off buffer by directly paralleling buffer capacitors. First， the structure and operation control of IGCT-HDCT （IGCT-based high-capacity DC tr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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zhejiang electric power
2023-06-01
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| Series: | Zhejiang dianli |
| Subjects: | |
| Online Access: | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=8afdc8e1-1589-4ca3-ad51-c4c8055587c9 |
| _version_ | 1797788165565579264 |
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| author | TANG Xueteng MA Yiqing SHI Xinghua QIU Peng HUANG Xiaoming ZHAO Biao |
| author_facet | TANG Xueteng MA Yiqing SHI Xinghua QIU Peng HUANG Xiaoming ZHAO Biao |
| author_sort | TANG Xueteng |
| collection | DOAJ |
| description | The DC transformers with dual active bridge （DAB） topology is characterized by zero voltage switching （ZVS） and provides the basis for realizing lossless turn-off buffer by directly paralleling buffer capacitors. First， the structure and operation control of IGCT-HDCT （IGCT-based high-capacity DC transformer） are introduced. Then， a black startup strategy based on a soft converter is proposed， which divides the start process into the extended phase shift and single phase shift startup to realize the ZVS of all devices during the black startup of IGCT-HDCT and prevent the surge current on the buffer capacitor. By analyzing the resonance process of the device after shutdown， the relationship between the phase shift and the system parameters in the extended phase shift stage is introduced， and the ZVS characteristics of the device in the single phase shift stage are verified. The transient bias current of the system is eliminated by predictive control and duty ratio design. Finally， the feasibility of the proposed control is verified by a 1.5 kV/2 MW prototype. |
| first_indexed | 2024-03-13T01:31:43Z |
| format | Article |
| id | doaj.art-1eff67a5beed4591b30137bb5b4f3e7b |
| institution | Directory Open Access Journal |
| issn | 1007-1881 |
| language | zho |
| last_indexed | 2024-03-13T01:31:43Z |
| publishDate | 2023-06-01 |
| publisher | zhejiang electric power |
| record_format | Article |
| series | Zhejiang dianli |
| spelling | doaj.art-1eff67a5beed4591b30137bb5b4f3e7b2023-07-04T06:43:14Zzhozhejiang electric powerZhejiang dianli1007-18812023-06-01426142210.19585/j.zjdl.2023060021007-1881（2023）06-0014-09Research on the black start of DC transformers based on soft converter controlTANG Xueteng0MA Yiqing1SHI Xinghua2QIU Peng3HUANG Xiaoming4ZHAO Biao5Department of Electrical Engineering, Tsinghua University, Beijing 100000, ChinaDepartment of Electrical Engineering, Tsinghua University, Beijing 100000, ChinaState Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, ChinaState Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaDepartment of Electrical Engineering, Tsinghua University, Beijing 100000, ChinaThe DC transformers with dual active bridge （DAB） topology is characterized by zero voltage switching （ZVS） and provides the basis for realizing lossless turn-off buffer by directly paralleling buffer capacitors. First， the structure and operation control of IGCT-HDCT （IGCT-based high-capacity DC transformer） are introduced. Then， a black startup strategy based on a soft converter is proposed， which divides the start process into the extended phase shift and single phase shift startup to realize the ZVS of all devices during the black startup of IGCT-HDCT and prevent the surge current on the buffer capacitor. By analyzing the resonance process of the device after shutdown， the relationship between the phase shift and the system parameters in the extended phase shift stage is introduced， and the ZVS characteristics of the device in the single phase shift stage are verified. The transient bias current of the system is eliminated by predictive control and duty ratio design. Finally， the feasibility of the proposed control is verified by a 1.5 kV/2 MW prototype.https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=8afdc8e1-1589-4ca3-ad51-c4c8055587c9dc transformerblack startzero voltage switching |
| spellingShingle | TANG Xueteng MA Yiqing SHI Xinghua QIU Peng HUANG Xiaoming ZHAO Biao Research on the black start of DC transformers based on soft converter control Zhejiang dianli dc transformer black start zero voltage switching |
| title | Research on the black start of DC transformers based on soft converter control |
| title_full | Research on the black start of DC transformers based on soft converter control |
| title_fullStr | Research on the black start of DC transformers based on soft converter control |
| title_full_unstemmed | Research on the black start of DC transformers based on soft converter control |
| title_short | Research on the black start of DC transformers based on soft converter control |
| title_sort | research on the black start of dc transformers based on soft converter control |
| topic | dc transformer black start zero voltage switching |
| url | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=8afdc8e1-1589-4ca3-ad51-c4c8055587c9 |
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