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Content Provider | IEEE Xplore Digital Library |
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Author | Wensong Yu Hao Qian Jih-Sheng Lai |
Copyright Year | 2008 |
Description | Author affiliation: Future Energy Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA (Wensong Yu; Hao Qian; Jih-Sheng Lai) |
Abstract | This paper first introduces the design of an ultra high-efficiency 50 kW bidirectional DC-DC converter at ZVS operation and then a high-precision efficiency measurement method using regenerative approach. The ultra high-efficiency bidirectional DC-DC converter is achieved with (1) the use of CoolMOS as the main switch under zero-voltage soft switching condition (2) multiple phase legs for current sharing to reduce the conduction loss, and (3) coupling inductors between each two phase legs to reduce the core loss. Two identical hardware prototypes were designed, fabricated and tested for performance evaluation. In order to precisely measure the converter efficiency, the two identical bidirectional DC-DC converters are tested with one as the device under test (DUT) and the other as the regenerative unit. With the use of plusmn0.5% current shunt and regenerative measurement, the relative efficiency error stays below plusmn0.025%. Measured efficiency from 20% to 100% load consistently show above 97.50% and peaks at 99.05%. |
Starting Page | 685 |
Ending Page | 690 |
File Size | 405170 |
Page Count | 6 |
File Format | |
ISBN | 9781424417674 |
ISSN | 1553572X |
DOI | 10.1109/IECON.2008.4758036 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-11-10 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | DC-DC power converters Testing Switches Leg Zero voltage switching Switching converters Inductors Core loss Hardware Prototypes regenerative test Bidirectional dc-dc converter efficiency measurement high precision |
Content Type | Text |
Resource Type | Article |
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