Non-isolated Bidirectional DC-DC Converter for BLDC Motor in Electric Vehicle Applications

This paper proposes a Bidirectional DC-DC converter (BDC) that interfaces a battery pack and motor load for Electric Vehicle (EV) applications. The proposed converter is capable of operating in two distinct modes i.e. (i) Battery charging mode with boost operation and (ii) Battery discharging mode with Buck operation, and with the features of bidirectional power flow control. The system model has been simulated in MATLAB/SIMULINK software to validate the performance of the proposed bidirectional DC-DC converter. Moreover, a PI controller has been incorporated for controlling the DC link voltage so that the input voltage for the motor controller is maintained. A simple three-phase inverter powered the motor with the help of Hall sensor signals to generate the gate pulses and the findings are reported well at the end with the concluding remarks.