주행사이클과 재질 특성을 고려한 구동모터의 사이즈에 따른 경량 전기차의 전비 분석

초록

This paper deals with the fuel economy of the light electric vehicle (LEV) according to the size of the traction motor. Firstly, the cross-sectional area design was conducted considering the electromagnetic and mechanical properties of materials for the traction motor. Based on this design result, the characteristics of the traction motor was estimated according to the stack length by using finite element analysis (FEA) and equivalent circuit. Next, to investigate the effect on fuel economy, the vehicle simulation was constructed. The ADVISOR, freeware of the MATLAB-based program, was utilized. Especially, to reflect the successive charge-discharge situation, 2nd order RC equivalent circuit was adopted. Finally, the relationship between the traction motor size and fuel economy was analyzed for the urban driving cycle and highway driving cycle.

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