Non-Isolated Bi-directional DC-DC Converters for Plug-In Hybrid Electric Vehicle Charge Station Application

Abstract

There is a growing interest on plug-in hybrid electric
vehicles (PHEV’s) due to energy security and green house gas
emission issues, as well as the low electricity fuel cost. As battery
capacity and all-electric range of PHEV’s are improved, and
potentially some PHEV’s or EV’s need fast charging, there is
increased demand to build high power off-board charging
infrastructures. A charge station architecture has been proposed,
which has a DC micro grid to interface with DC-DC chargers
and energy storage. Several non-isolated bidirectional DC-DC
converters suited for charge station applications have been
reviewed and compared. Half bridge converter is a good
candidate.