An analytical method of EV velocity profile determination from the power consumption of electric vehicles

Abstract

Concerning a carpsilas performance, acceleration and deceleration are the most important features in performance assessments. Fuel consumption has been a key issue in the performance of cars in recent years. Electric vehicles (EV) with high energy-efficiency have been developed for such a reason. However, problems related to the running distance per charging, the charging time, and so on have remained because of the smaller battery energy stored in. Under these circumstances, it is more important to analyze the running state of EV. To obtain longer running distance and good mileage, a theoretical equation to determine the EV performance to the input electric power is deduced. As to an EV, deriving the accelerated velocity, a, from a situation when electric input power, P, is given to an EV, driving at a velocity, v, is extremely important in order to find out the acceleration performance of a car. This paper analytically describes a method to obtain the performance of the EV from equations between the measured acceleration, a, and the input or regenerated electric power, P. It is shown that this method can demonstrate possibilities to predict the performance of electric vehicles using stored electric energy and the driving root.