Abstract
This paper proposes a new bidirectional resonant dc-dc converter suitable for wide voltage gain range applications (e.g., energy storage systems). The proposed converter overcomes the narrow voltage gain range of conventional resonant DC-DC converters, and meanwhile achieves high efficiency. It is realized by configuring a full-bridge mode and a half-bridge mode operation during each switching cycle. The fixed-frequency phase-shift control schemes are applied and the normalized voltage gain can be always from 0.5 to 1, regardless of the load. The transformer root-mean-square (RMS) currents in both the forward and the reverse modes have a negligible variation with respect to the voltage gain, which is beneficial to low conduction losses throughout a wide voltage range. Moreover, the applied MOSFETs are soft-switched, allowing for minimum switching losses. Both the operation principles and characteristics of the proposed converter are analyzed. Finally, a 1-kW converter prototype is built and the experimental results verify the theoretical analyses.
Original language | English |
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Title of host publication | Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) |
Number of pages | 7 |
Publisher | IEEE Press |
Publication date | Mar 2017 |
Pages | 2084-2090 |
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 |
Keywords
- Bidirectional dc-dc converter
- Resonant converter
- Wide gain range