Design and Analysis of DC-DC Two-Phase Interleaved Buck Converter for EV Charging Applications

While the world is booming with Electric Vehicles (EVs), countries where bikes are a common mode of transport still require adequate charging infrastructure to cope up with the slow EV growth. Efficient power conversion is necessary for EV chargers to be feasible. This paper presents an efficient solution for the DC-DC stage of the EV chargers for two wheelers by designing a two-phase Interleaved Buck Converter (IBC). The converter has been equipped with a PI controller for corrective measures against the disturbances, reducing the steady state error and the settling time of the system. The designed PI controller eliminates the need for an additional controller for current balancing between the two branches of the IBC. With significant advantages of reduced ripple, mitigated stress on the components and efficient conversion of power, IBC looks out as a great breakthrough to shift the dynamics of two-wheeler chargers. IBC in this paper has been designed using MATLAB/Simulink and is evaluated in Proteus with the non-ideal components that can be used in the prototype along with a small-scale hardware validation of 12W prototype.