A new method to extend the soft-switching area of three-phase Dual-Active-Bridge converters

Autor: Akinori Katou, Kazuto Yukita, Shinji Yoshida, Duy-Dinh Nguyen
Rok vydání: 2021
Předmět:
Zdroj: 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia).
DOI: 10.1109/ecce-asia49820.2021.9479305
Popis: This paper presents a new modulation method aiming to extend the soft-switching area of a three-phase Dual-Active- Bridge (DAB) converter. The converter includes three single-phase transformers connecting in Y-Y fashion. A new degree of freedom is introduced to both inverters to make the current discontinuous. Unlike other customized modulation methods that cause the transformer voltages and currents asymmetric, the propose method can maintain the symmetrical form of the voltages and currents. Thanks to that, the switching stress and dissipation are distributed equally among transistors. Experimental results confirm the proposed modulation technique.
Databáze: OpenAIRE