Evaluation of a radial flux air-cored permanent magnet machine drive with manual transmission drivetrain for electric vehicles

[摘要] Due to finite oil resources and its political and economical impact, a renewed interest in energyindependence has compelled industry and government to pursue electric vehicle designs.The current worldwide research that is being conducted on drivetrain topologies for EVs,focus mainly on direct in-wheel drive, direct differential drive and fixed-gear differential drivetopologies. Furthermore, the control strategy for these type of motor drives require a, socalled, field-weakening operation in order to achieve acceptable performance characteristicsfor the vehicle.This thesis evaluates the use of a manual gearbox drivetrain topology and a radial fluxair-cored permanent magnet (RFAPM) synchronous machine, without flux-weakening operation,as a traction drive application for EVs. For the purpose of this research study, a 2006model Opel Corsa Lite is converted to a battery electric vehicle, and the Corsa is renamedto the E-Corsa. The Corsa is converted so that all the original functionality, boot spaceand space inside the vehicle are retained. The original 5-speed manual gearbox is used asdrivetrain for the vehicle and a 40 kW, 70 Nm RFAPM traction drive is developed for themanual gearbox. A power electronic converter is designed for RFAPM traction drive and aLithium ion (Li-ion) battery pack is used as energy source for the traction drive. The batterypack is mounted partially in the front and partially in the back of the vehicle to maintainan even weight distribution in the vehicle.

[发布机构] Stellenbosch University