Variable CLLC Topology Structure Technique for a Bidirectional on Board Charger of Electric Vehicle
Abstract
The bidirectional onboard charger (OBC) in electric vehicles enables energy transfer between the grid and battery. CLLC resonant converters have the advantage of high efficiency, often acting as a DC/DC converter for the OBC. In this work, the forward and reverse output power capability of the CLLC topology is analyzed. It is found that the forward and reverse output power capability of the CLLC converter is asymmetric, which makes it difficult to fully meet the application requirements in OBCs. Therefore, this paper proposes a CLLC resonant converter with a modified half-bridge and full-bridge structure that can achieve forward 6.6-kW and reverse 3.3-kW power conversion. The simulation and prototype results confirm the proposed solution.
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The symmetrical phase-shifted DAB or CLLC resonant converters are more suitable for bidirectional DC/DC converters.
“Therefore, the symmetrical phase-shifted DAB [109] or CLLC resonant converters [110] [112] are more suitable for bidirectional DC/DC converters.”
From A Review of Bidirectional On-Board Chargers for Electric Vehicles (2021) · cites this paper as [110]
Cites
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Analysis and Design of Single-Stage AC/DC $LLC$ Resonant Converter
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3.3kW on board charger for electric vehicle
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Variable DC bus control for a bidirectional on-board electric vehicle charger
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A Review of Bidirectional On-Board Chargers for Electric Vehicles
Yuan, J., Dorn-Gomba, L., Callegaro, A. D., Reimers, J., & Emadi, A. (2021) · IEEE Access · doi:10.1109/access.2021.3069448 · Cited by 390 · see citing works
“rical phase-shifted DAB [109] or CLLC resonant converters [110]–[112] are more suitable for bidirectional DC/DC converters.”
Background
- Authors
- Qu, L., Wang, X., Bai, Z., & Liu, Y.
- Affiliations
- Harbin Institute of Technology (CN)
- Inovance (China) (CN)
- Venue
- 2019 4th International Conference on Power and Renewable Energy (ICPRE)
- Publisher
- IEEE
- Published
- 2019-09
- Pages
- 185-189
- OpenAlex
- W3010659896
- Cited by
- 9
- References
- 12
- Citations by year
- 2026: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 3
- FWCI
- 1.59
- Type
- conference paper
- Language
- en
- Open access
- closed
- Licence
- Locations
- International Conference on Power and Renewable Energy (ICPRE) (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Physical Sciences › Engineering › Mechanical Engineering › Induction Heating and Inverter Technology
- Keywords
- CLLC resonant converter, electric vehicle charging, DC-DC converter, half-bridge topology, full-bridge topology, topology change
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