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A novel zero voltage transition non-isolated bidirectional converter for energy storage applications

This paper presents a new approach to realize zero voltage transition in a non-isolated bidirectional DC/DC converter for the applications of battery back-up systems in electric vehicles. The proposed converter works in either boost or buck mode. The main characteristics of all switching devices are turned at zero voltage transition, which is achieved with the inclusion of resonant auxiliary devices with the conventional bidirectional converter. This converter has low switching losses, low voltage stress and better efficiency. This paper presented operation principles simulation results and its experimental validations by a 100V/1.5kW laboratory prototype.