Control and Operation of Bidirectional Converter for Electric Vehicles

Abstract

Bidirectional converter plays a strategic role in electric vehicle (EV) applications, specially, in vehicle-to-grid (V2G) and grid-to-vehicle (G2V) necessities. This allows the usage of vehicle battery pack as a source of distributed energy. It also supports the concept of smart grid, where EVs can serve as flexible energy storage systems contributing to grid stability, load balancing, and permitting renewable energy integration. A plentiful type of bidirectional converters can be used in electric vehicle applications, including AC-DC-AC and DC-DC converters including advanced converters. Selection and configuration of the converter depends on the requirements of the vehicle and factors such as efficiency, size, and cost. The operation and control strategy of a configurable bidirectional Buck-Boost converter is presented in this paper for three-phase induction motor applications in electric vehicles. Simulink results are discussed for motoring and regeneration mode with state-of-charge (SoC) of battery