Control of a Single Phase Integrated Battery Charger with Active Power Decoupling for Electric Vehicles

Abstract

Pollutants released from the Internal Combustion Engine (ICE) vehicles is having a significant impact on the atmosphere and is causing climate change. This global concern is increasing the demand for electric vehicles and paved the way for research in more sophisticated technologies associated with Electric Vehicles. A major concern for consumers while purchasing an EV is very little availability of charging infrastructure. So, the on-board chargers have drawn attention, but they have some drawbacks. Integrated Battery Charger (IBC) concept is derived from on-board chargers and has several advantages such as reduced cost, weight and charging time of EV etc. The single phase grid connected systems consists of oscillating power which is twice the grid frequency, which decreases the performance and lifetime of the batteries. The proposed active power decoupling scheme will divert this oscillating power from the DC bus and stored in the third phase winding of the motor and released as and when required using second and third leg of the inverter. So, a single-phase IBC with active front end converter (FEC) is proposed which incorporates an active power decoupling scheme. The proposed scheme of IBC with active power decoupling is validated through extensive simulation in MATLAB-SIMULINK platform and experimental results are also included.