Impacts of Reliability-Oriented Phase Shedding in Modular Dab Ev Charging

The efficiency and reliability performance of various power sharing strategies for a modular electrical vehicle charging system are evaluated. The dual-active-bridge converters are employed due to their adaptability and robust performance. Considering reliability and overall efficiency, power-sharing strategies based on module-shedding effectively improve system efficiency under light-load conditions, while rotating module-shedding can increase reliability by evenly distributing thermal stress among the modules. However, the performance of rotating module-shedding is dependent on the rotating frequency. To analyze the advantages and limitations of various power-sharing strategies, this paper compares their performance from the perspective of reliability and efficiency, which can provide a guideline for selecting the suitable power-sharing strategy based on specific system performance requirements.