A Single-stage Integrated Charger for Electric Vehicles (EVs) and Plug - in Electric Vehicles (PEVs) Incorporating Induction Motor Drive

Most prominent parts of a plug-in electric vehicle (PEV) are its charging and propulsion system. These two parts are collectively referred as power electronic interface (PEI) of PEV. This paper proposes an onboard integrated charger with single-stage converter, coupled with field-oriented controlled (FOC) induction motor drive in the propulsion system. Control strategies are developed to operate this PEI effectively. Single-stage DC/DC converter utilized in PEI contains the least number of components compared to other existing converters. It can perform buck/boost operation in all the three modes of operation, i.e. plug-in charging, propulsion and regenerative braking. Propulsion drive in the PEI is composed of PWM converter fed three-phase induction motor drive. It is operated in a closed loop rotor field-oriented control. The effectiveness of the proposed PEI and its control methodologies are verified with necessary simulation and experimental results.