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A Novel Two-Stage Power Conversion Method suitable for LDCs of the Electric Vehicles
- Authors
- Tuan, T.M.; Choi, W.
- Issue Date
- May-2019
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- GaN FETs; LDC converter; LLC resonant converter; MHz operation; Planar Transformers
- Citation
- ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia, pp.666 - 672
- Journal Title
- ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia
- Start Page
- 666
- End Page
- 672
- ISSN
- 0000-0000
- Abstract
- The Low Voltage DC-DC converters (LDCs) of the Electric Vehicles require high power density and high efficiency operation over the wide range of load and input voltage variations. This paper introduces a novel topology which combines three 1 MHz Half-Bridge (HB) LLC resonant converters and an Inverting Buck-Boost (IBB) converter to adjust the output voltage without frequency modulation. The switching frequency of the proposed converter is fixed at 1MHz to achieve a constant frequency operation for the resonant converter to achieve a maximum efficiency. In the proposed topology GaN FETs and planar transformers are employed to optimize the converter operation at high frequency. A 1 MHz/1.8 kW prototype converter is built to verify the feasibility and the validity of the proposed LDC topology. © 2019 The Korean Institute of Power Electronics (KIPE).
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Related Researcher
- Choi, Woo Jin
- College of Engineering (School of Electrical Engineering)