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Abstract
A voltage doubler circuit is realized to extend the soft-switching range of Dual Active Bridge (DAB) converters. No extra hardware is added to the DAB to form this circuit, since it is composed of the dc blocking capacitor and the low side full bridge converter, which already exist in DAB. With the voltage doubler, the DAB converter can achieve soft switching and high efficiency when the low side dc voltage is close to 2 pu (1 pu is the high side dc voltage divided by the transformer turn ratio), which can be realized only when the low side dc voltage is close to 1 pu by using the conventional phase shift modulation in DAB. Thus the soft switching range is extended. The soft switching boundary conditions are derived. A map to show the soft switching or hard switching in the full load and voltage range is obtained. The feasibility and effectiveness of the proposed method is finally verified by experiments.
Original language | English |
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Title of host publication | Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) |
Publisher | IEEE Press |
Publication date | Mar 2017 |
Pages | 300-306 |
ISBN (Print) | 978-1-5090-5366-7 |
DOIs | |
Publication status | Published - Mar 2017 |
Event | 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) - Tampa Convention Center, Tampa, FL, United States Duration: 26 Mar 2017 → 30 Mar 2017 |
Conference
Conference | 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) |
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Location | Tampa Convention Center |
Country/Territory | United States |
City | Tampa, FL |
Period | 26/03/2017 → 30/03/2017 |
Series | IEEE Applied Power Electronics Conference and Exposition (APEC) |
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ISSN | 2470-6647 |
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