Electric vehicle drive selection related issues

Energy crisis's due to the depletion of fossil fuel and need of pollution free environment has leaded the world automobile technology to switch over to Electrical propulsion system into vehicles. For the consumer expected performance of electrical vehicles proper selection of suitable electric motor is the first and important criterion. So in this studies selection of appropriate motor for electrical vehicle has been discussed based on tractive efforts requirements of vehicle and delivered by motor. Three leading candidates of traction motors as Induction motor (IM), Permanent magnet synchronous motor (PMSM) and Switch reluctance motor (SRM) are compared for maximum speed, dynamic efficiency, material cost and fault reliability. Induction motors could be appropriate choice but still not satisfactory. Multiphase induction motor can be the better selection considering all the key factors. Other important issues related to electric vehicles like Electro Magnetic Compatibility, Thermal management and fault tolerance are discussed in brief.