Development of power conversion unit for automotive traction motor

Electric vehicle appears to be one of the available solutions for the growing concerns for environmental protection and the fast rate of depletion of world fuel oil supply. Electric vehicle can become a possible alternative to the internal combustion engine. However electric vehicles have serious disadvantages because of the limitation on cruising range imposed by weight, capacity of the electric accumulators and long recharging time. Improvement of efficiency of motor traction drives is an important issue in pure electric vehicles to improve the running distance on one charge [1]. In this paper, an electric vehicle driving system is developed and the performance of the inverter is verified through tests. The evaluation is demonstrated experimentally.