Development of EV energy consumption model which can solve both of forward and reverse calculation method

Abstract

When predicting the electric power consumtion of EVs, the method of calculating the vehicle speed based on the accelerator operation of the driver is called forward calculation. In this case, the driver model performs speed control by setting the speed pattern of the driving mode as a speed target. On the other hand, the method of calculating the torque necessary for acceleration / deceleration and the current necessary to output the torque by the motor by tracing back from the load to the energy source based on the speed pattern as a starting point is called reverse calculation. Although different models are required for causal modeling, a model corresponding to both methods was constructed by utilizing the features of acausal modeling. This can reduce not only the maintenance cost of the simulation model, but also the difference between these models for forward and reverce calculation. The reverse calculation methed doesn’t need control models, and calculates faster than forward calculation.