Study of One Bi-directional DC/DC Converter for Hybrid Electric Vehicle

The paper first introduces the basic drive system of a hybrid electric vehicle.Then the selection and design of aforementioned converter are proposed.The converter has high power flow capability and minimum device stresses that can suitably interface a super capacitor with the drive train of a hybrid electric vehicle.Furthermore,by compar-ing of the main characteristics and applications with some typical isolated bi-directional DC/DC converter,the pro-posed converter has low device rating and can be controlled by duty cycle and phase shift.At last,the most impor-tant characteristics of this converter is to uses the transformer leakage inductance as the primary energy transfer ele-ment and control parameters,the experimental waveforms are given to demonstrate the goodness of this novel topology which is in particular for hybrid electric vehicle.