Bidirectional DC-DC Converter Topologies for BESS — Isolated vs Non-Isolated, LLC, DAB Comparison

Abstract The bidirectional DC-DC converter sits between the battery stack and the DC link in a battery energy storage system (BESS), and its topology choice directly determines system efficiency, cost, footprint, and reliability. According to the International Energy Agency, global battery storage deployment reached 108 GW in 2025, a 40% year-over-year increase, with LFP chemistry […]