Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid
This paper proposes a bidirectional boost–buck converter employing a six-pack SiC intelligent power module using droop control in DC nano-grids. The topology is constructed as a cascaded structure of an interleaved boost converter and buck converter. A six-pack SiC intelligent power module (IPM), wh...
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/21/8777 |
| _version_ | 1797631329075986432 |
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| author | Yeonwoo Kim Sewan Choi |
| author_facet | Yeonwoo Kim Sewan Choi |
| author_sort | Yeonwoo Kim |
| collection | DOAJ |
| description | This paper proposes a bidirectional boost–buck converter employing a six-pack SiC intelligent power module using droop control in DC nano-grids. The topology is constructed as a cascaded structure of an interleaved boost converter and buck converter. A six-pack SiC intelligent power module (IPM), which is suitable for the proposed cascaded structure, is adopted for high efficiency and compactness. A hybrid control scheme, in which holding a particular switch always results in a turn-off or turn-on state according to the boost mode and the buck mode, is employed to reduce the switching losses. By applying the hybrid control scheme, the number of switching operations of the switches can be minimized. Since switchover of the current controller is not required, smooth transition is enabled not only from the buck mode to the boost mode but also vice versa. As a parallel control, a secondary control is employed with DC droop control, which has a trade-off relationship between voltage sag and current sharing. It is possible to enhance the accuracy of current sharing while effectively regulating the DC link voltage without voltage sag. This is verified experimentally using two modules as laboratory prototypes, of which the power rating is 20 kW each. |
| first_indexed | 2024-03-11T11:21:17Z |
| format | Article |
| id | doaj.art-4f0bad98d9934ae59bb37b99442ca130 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T11:21:17Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4f0bad98d9934ae59bb37b99442ca1302023-11-10T15:12:01ZengMDPI AGSensors1424-82202023-10-012321877710.3390/s23218777Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-GridYeonwoo Kim0Sewan Choi1Department of Automotive Parts, Busan Machinery Research Center, Korea Institute of Machinery & Materials, Busan 46744, Republic of KoreaDepartment of Electrical & Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of KoreaThis paper proposes a bidirectional boost–buck converter employing a six-pack SiC intelligent power module using droop control in DC nano-grids. The topology is constructed as a cascaded structure of an interleaved boost converter and buck converter. A six-pack SiC intelligent power module (IPM), which is suitable for the proposed cascaded structure, is adopted for high efficiency and compactness. A hybrid control scheme, in which holding a particular switch always results in a turn-off or turn-on state according to the boost mode and the buck mode, is employed to reduce the switching losses. By applying the hybrid control scheme, the number of switching operations of the switches can be minimized. Since switchover of the current controller is not required, smooth transition is enabled not only from the buck mode to the boost mode but also vice versa. As a parallel control, a secondary control is employed with DC droop control, which has a trade-off relationship between voltage sag and current sharing. It is possible to enhance the accuracy of current sharing while effectively regulating the DC link voltage without voltage sag. This is verified experimentally using two modules as laboratory prototypes, of which the power rating is 20 kW each.https://www.mdpi.com/1424-8220/23/21/8777DC nano-griddroop controlbidirectional boost–buck convertersix-pack SiC-IPMESS |
| spellingShingle | Yeonwoo Kim Sewan Choi Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid Sensors DC nano-grid droop control bidirectional boost–buck converter six-pack SiC-IPM ESS |
| title | Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid |
| title_full | Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid |
| title_fullStr | Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid |
| title_full_unstemmed | Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid |
| title_short | Bidirectional Six-Pack SiC Boost–Buck Converter Using Droop Control in DC Nano-Grid |
| title_sort | bidirectional six pack sic boost buck converter using droop control in dc nano grid |
| topic | DC nano-grid droop control bidirectional boost–buck converter six-pack SiC-IPM ESS |
| url | https://www.mdpi.com/1424-8220/23/21/8777 |
| work_keys_str_mv | AT yeonwookim bidirectionalsixpacksicboostbuckconverterusingdroopcontrolindcnanogrid AT sewanchoi bidirectionalsixpacksicboostbuckconverterusingdroopcontrolindcnanogrid |