Abstract:

Two electrical-inertia-simulation methods were proposed based on acceleration equivalent and based on energy equivalent respectively to test and evaluate the energy consumption in the early stages of development of the electric vehicles. According to the principle of acceleration equivalent simulation, either time correction or torque correction was adapted to compensate the energy difference between bench simulation and vehicle consumption. Two methods for electrical inertia imulation, the energy equivalent and the equivalent acceleration, were compared to their advantages and applied fields by theoretical analysis and simulation
testing. The results show that the acceleration equivalent method is suitable for the dynamic performance test, and the proposed energy equivalent method is more suitable for the test of energy consumption. Therefore, the combination of the two inertia simulation methods can be used to simulate the dynamic performance and energy consumption characteristics of the electric vehicles.

Key words: electric vehicles, energy consumption test, electrical inertia simulation, speed offset