Multiphase Interleaved Bidirectional DC-DC Converter for Electric Vehicles and Smart Grid Applications

Abstract

This paper deals with the design and the control of multiphase interleaved bidirectional DC-DC converter. This converter is used for Electric Vehicle (EV) applications to convert and increase energy storage system voltage from low side voltage to high side voltage, which is necessary to feed the inverter used to drive the traction motor. The proposed converter can be also used to connect the energy storage system to the smart grid. To increase the performance of high side voltage and to have equal sharing of the load current in each converter module a fuzzy sliding mode control is proposed.  The control method is tested by simulation of 4 interleaved bidirectional DC-DC converter associated with the three-phase inverter coupled with a 3 phase induction motor. The simulation results exposed the robustness of the proposed control method under some disturbances.