Design and Analysis of a New Zero Current Transition Bidirectional DC-DC Converter for Energy Storage Systems

Abstract

This paper proposes a new zero-current transition based non-isolated bidirectional DC-DC converter for battery storage appliances in DC traction vehicles. The proposed converter has an auxiliary IGBTS, auxiliary inductor, auxiliary capacitor and bypass diodes are additionally to the main converter module. Usually, the zero-current transition achieved for the main IGBTs circuit has major advantages like reduced turn-off losses, overall conduction losses and minimized reverse recovery problems to the anti-parallel diodes of the main IGBTs. The operation principles, simulation and experimental investigations on 150 V/250 V/1 kW laboratory prototype are presented in order to show the performance and also to verify the soft-switching characteristics in boost/buck modes of the converter.

Bidirectional converter based on boost/buck DC‐DC converter for microgrids energy storage systems interface

“…However, this converter requires a high inductors value to operate in continuous conduction mode (CCM), which increases its volume and cost. To obtain low current ripple, low current stress, and low voltage stress in the switches, the converters in earlier studies 22,23 are developed aiming the energy storage system interface working with zero current switching (ZCS) and hence avoiding the most part of switching losses.…”