The environmental problems such as air pollution by exhaust gases and global warming are now growing worldwide, and the development of electric vehicles (EV) as a means to solve these problems is gaining attention. Recently, the development of low-volume, energy-density and high-power batteries and high-performance, low-cost rare-earth permanent magnets, and the rapid development of power electronics technology have made the development of electric vehicles more intensive and accelerating.
Vehicle acceleration, single-charging travel distance and maximum slope-climbing capability need to be increased to encourage wide use of electric vehicles like traditional fuel vehicles.
In many references, different driving modes to analyze the dynamic motion characteristics of an electric vehicle were considered and the effects of parameters on the performance of a vehicle and energy consumption were analyzed on MATLAB/SIMULINK.
Ri Tong Hyon, a researcher at the Faculty of Electrical Engineering, studied the mathematical model of an electric vehicle to analyze and simulate its static and dynamic motion. On this basis, he confirmed the technical specifications of a traction motor.
First, based on the simulation analysis of static and dynamic motion, he investigated the traction force characteristics, the driving resistance characteristics, the speed-torque characteristics of the traction motor and the distribution of the operation points of the traction motor in different driving modes. Then, he determined the technical indices including the power, torque and rotational speed of a traction motor with high acceleration performance.
The effectiveness of the proposed method was verified through the simulation.
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