Abstract
This paper summarizes the trend of novel technologies used for electric vehicles (EV) and hybrid electric vehicles (HEV) based on the published papers and reports in order to predict the needs technologies for expanding EV and HEV market. At first, the relationship between energy demand situation and expanding trends of electric propulsion vehicles will be mentioned. Regarding traction motors, required performances and miniaturizing technologies by novel coil winding structures and increasing rotational speed, iron loss reduction technologies by the contrived core shapes, have been extracted and classified into the trends for each EV and HEV. In conclusion, miniaturizing technology was found to be one of the key issue of traction motor for electric propulsion vehicles.
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