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The energy consumption of electric vehicles (EVs)depends on traffic environment, terrain, resistive forces acting on vehicle, vehicle characteristics and driving habits of driver. The battery pack in EV is the main energy storage element and the energy capacity determines the range of vehicle. This paper discusses the behavior of battery when EV is subjected to different driving environments such as urban and highway. The battery rating is selected based on requirement of driving cycle. The MATLAB/Simulink model of battery energy storage system (BESS) consisting of battery, bidirectional DC/DCconverter and electric propulsion system is built. The simulation is carried out and the performance of BESS is tested for standard driving cycles which emulate actual driving situations. It has been shown that, the amount of the energy recovered by battery during deceleration depends on the amount of regenerative energy available in the driving cycle. If the battery recovers more energy during deceleration, the effective energy consumed by it reduces and the range of the vehicle increases.

The selection of motor is one of the significant factors in Electric Vehicle design. When the motor is selected based on the conventional method, its performance during starting of the EV is met but it may fail in other operating regions of the driving cycle. This is because, acceleration requirements assume zero initial speed conditions and the requirements with different initial speeds is not accounted in the conventional method. This paper discusses an alternative procedure to compute the ratings of induction motor. The preliminary method to compute the ratings is carried out based on vehicle performance requirements. The improvisation techniques in the computation are then adopted to get required acceleration and transient torque capabilities of motor to meet the driving cycle requirements. The procedure is illustrated through simulation studies using MAT lab software.