Abstract:

With the constant increase in fossil fuels’ price caused by the excessive demand, and with recent environmental concerns relatively to toxic gases emissions, the search of alternative ways of locomotion becomes crucial. Urban buses are most common alternative to the usage of own vehicle. However, they still produce toxic gases. Having this in consideration and taking advantage of the recent eminence of electric motors on transportation sector, it is analyzed the control of permanent magnet synchronous motors, in particular an application of a 150kW motor on an electric bus. This research aims at analyzing the control domain in electric mobility and discussing the design of the controller that drives the motor, allowing its driving and braking, with the ability to regenerate braking energy for recharging the batteries. The system should be capable of working without speed or position sensors. It is intended to validate the simulation results applying a less powerful motor that the one to be used as the final objective, in order to achieve a laboratorial validation of those results. The final purpose of this work is to be applied in an electric bus from the company CaetanoBus, enhancing the traction control already existent.