Design of 1 kW bidirectional half-bridge CLLC converter for electric vehicle charging systems
Abstract
DC-DC converters are utilized in many applications such as automobiles, chargers, uninterrupted power supplies (UPS), and renewable energy systems. Galvanically isolated DC-DC converters are usually selected in electric vehicle (EV) battery charging systems. The converters typically interface between a DC link and a high voltage battery pack. Resonant CLLC DC-DC converters can achieve galvanic isolation, bidirectional power flow, and high efficiency, which make them good candidates for bidirectional EV charging systems. In this paper, a bidirectional half-bridge CLLC converter is designed and evaluated. An optimal soft-switching feature is applied in the design. The operating principle, design methodology and some considerations are presented. The prototype with 1 kW power rating interfaces a 300 - 600 V DC link and a high voltage battery pack (200 - 400 V). The performance in terms of efficiency, control complexity, component stress and cost is analyzed.
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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 [109]
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References 15 · Cited by 46
- Authors
- He, P., & Khaligh, A.
- Affiliations
- University of Maryland, College Park (US)
- Venue
- 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)
- Publisher
- IEEE
- Published
- 2016-12
- Pages
- 1-6
- OpenAlex
- W2611043055
- Cited by
- 46
- References
- 15
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 7 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 5 · 2019: 5 · 2018: 7 · 2017: 1
- FWCI
- 6.10
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- IEEE International Conference on Power Electronics, Drives and Energy Systems (publishedVersion)
- Funders
- National Science Foundation
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electromagnetic Compatibility and Noise Suppression
- Keywords
- CLLC converter, bidirectional DC-DC converter, half-bridge converter, electric vehicle charging, galvanic isolation, soft switching, resonant converter, high-voltage battery packs, converter efficiency, component stress
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