Simulation of electric transmission for off-road vehicle
2005 (English)In: Proceedings of the 15th International Conference ofthe ISTVS, 2005Conference paper (Refereed)
Electric transmissions can be used both on tracked and wheeled vehicles. For wheeled vehiclesthe electric transmission with hub motors provides the ability to accurately control the torque on everywheel independently, giving a great ability to improve both mobility in terrain and vehicle behaviour onroad. In this paper the components of a diesel-electric powertrain for off-road vehicles are modeled anda control layout with the possibility to include functions for improved performance both while driving offandon-road is proposed. The modeled electrical machines are of permanent magnet type with switchingpower electronics for motor currents control. Since the aim is to provide a framework when developingcontrollers for improved vehicle behaviour the models are of mean value type and the switching operationis not included. Components included in the models are a diesel engine, permanent magnet generator,controlled rectifier in order to use full DC-link voltage even for low diesel rpm, DC-link and power electronicsfor drive motors with field weakening at high speeds. All models are simulated in Simulink togetherwith a simplified vehicle model and the results show that it is possible to control the transmission withsimple ramp limitations providing a great possibility to let the electric transmission stay partially functionalto inhibit damages in case of a main controller failure.
Place, publisher, year, edition, pages
Electric transmission, simulation, vehicle control
IdentifiersURN: urn:nbn:se:kth:diva-6846OAI: oai:DiVA.org:kth-6846DiVA: diva2:11668
Proceedings of the 15th International Conference of the ISTVS. Hayama, Japan September 25–29, 2005
QC 201010262007-03-012007-03-012010-10-26Bibliographically approved