Zero Voltage Switching AC-DC Converter Based on Zero State Modulation (ZSM)

Conference · Sun Oct 01 04:00:00 EDT 2023

DOI:https://doi.org/10.1109/ECCE53617.2023.10361974· OSTI ID:2351038

Kandula, Prasad ^[1]; Harter, Jonathan ^[1]; Martinez Montejano, Misael ^[1]; Boone, Christian ^[1]

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1. ORNL

In this paper, a half-bridge building block that can achieve soft switching across the complete operating range while operating under fixed frequency is proposed. In addition, dead-beat model predictive controls to control the same are also proposed. The proposed converter, referred to as zero-state modulated (ZSM) converter, uses a zero state, enabled by a small auxiliary switch, to achieve soft-switching. The approach allows lower switching loss, controlled dv/dt, small filter inductor, fixed frequency operation allowing interleaving to reduce filter capacitor. A single half-bridge building block can used to realize a ZVS DC-DC converter or multiple of these building blocks can be used to achieve soft switching 1-phase or 3-phase AC-DC converters.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE Office of Electricity Delivery and Energy Reliability (OE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 2351038
• Country of Publication: United States
• Language: English