Скачать с ютуб Yuliang Cao - Switching Transition Bi-directional CLLC Resonant DC Transformer (CLLC-DCX) в хорошем качестве

Yuliang Cao - Switching Transition Bi-directional CLLC Resonant DC Transformer (CLLC-DCX)

Switching Transition Analysis and Optimization for Bi-directional CLLC Resonant DC Transformer (CLLC-DCX) Yuliang Cao was selected by 2022 CPES Annual Conference participants for a Best Technical Presentation Award sponsored by Delta Electronics. Summary: A comprehensive switching transient analysis for open-loop CLLC-DCX with DAS modulation is presented. Among seven ZVS transition types, one desirable Sync-ZVS transition is identified with merits of minimum deadtime, load-independent voltage-gain, and no deadtime conduction loss. In order to achieve this Sync-ZVS transition in the full load range, ACS method was proposed based on currents decomposition. Following this method, an overall design procedure for open-loop CLLC-DCX with DAS modulation was proposed to achieve high efficiency. Finally, the proposed Sync-ZVS transition and ACS method are both verified by three 18 kW CLLC-DCX prototypes with DAS modulation, which all operate around 500 kHz and have 98.8% peak efficiency. The proposed method has great potential to improve the performance of DCX used in EV charging system and solid- state transformer.