Requirement Development for Electrical Vehicles Using Simulation Tools

Steady state and dynamic vehicle models are derived for development of requirements on motors and batteries for the conversion of internal combustion engine powered vehicles to electric vehicles. MATLAB simulation tools are developed to establish relationships among motor power and torque, battery weight and specific energy, vehicle weight, speed, driving range, maximum cruise speed, and maximum acceleration. Vehicle level performance requirements such as driving range, maximum cruise speed, and maximum acceleration are established. The simulation tools allow one to translate these vehicle level performance requirements to lower level performance requirements on motor power and torque, battery power and energy, and gear reduction. The simulation tools can also be used to study the trade-offs among the design parameters.