Design Consideration of Bi-Directional CLLLC Resonant Converter in Energy Storage Systems
Conference: PCIM Europe 2024 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/11/2024 - 06/13/2024 at Nürnberg, Germany
doi:10.30420/566262311
Proceedings: PCIM Europe 2024
Pages: 8Language: englishTyp: PDF
Authors:
Cui, Guangzhi; Yu, Sheng-Yang
Abstract:
The bidirectional DC-DC converter plays a key role in order to realize power distribution in systems including batteries such as energy storage systems (ESS) and automotive on-board chargers. The capacitor-inductor-inductor-inductor-capacitor (CLLLC) resonant converter topology with its symmetric resonant tank, soft switching characteristics, which helps the system achieve higher efficiency and works convenient in bidirectional power flow. In this abstract, key CLLLC resonant converter design considerations in ESS are introduced. A CLLLC resonant converter prototype with rated power 3.6kW, and battery voltage 40~60 V is built to evaluate the performance which achieves 97.4% peak efficiency.