Enhancing Conducted EMI Mitigation in Boost Converters: A Comparative Study of ZVS and ZCS Techniques

This article highlights the growing demand for efficient power conversion technologies in the context of increasing electric vehicle (EV) adoption. Boost converters are crucial in elevating battery pack voltage to propel EV motors but often generate electromagnetic interference (EMI) due to high-frequency power device switching, potentially causing malfunctions in other electronic systems. To mitigate EMI, zero-voltage-switching (ZVS) and zero-current-switching (ZCS) methods are compared in this study. The findings reveal that both ZVS and ZCS effectively reduce EMI emissions compared to conventional hard-switching techniques. Nonetheless, ZVS soft switching excels in efficiency and EMI reduction at higher loads, making it a more promising solution for EV boost converters, though the choice should consider specific operating conditions.