Experimental discussion on the permanent magnet type anti-directional-twin-rotary motor drive for electric vehicle

A new power train for electric vehicles using an anti-directional-twin-rotary motor (ADTR-motor) was proposed. The ADTR-motor is such that a stator in a conventional motor was reformed to be movable, and the stator (outer rotor) rotates in the anti-direction of a rotor in a conventional motor (inner rotor). Several motor structures of the ADTR-motor were considered: permanent magnet (PM) type, induction motor type and so on. In this paper, the experimentally constructed PM type ADTR-motor was tested. The transient characteristics of surface mount type PM ADTR-motor are compared with four-mass model simulations.