ABSTRACT
A multitude of solutions are possible for the use of electric machines in vehicle propulsion, depending on the involvement of the combustion engine. Additional to the propulsion itself, a solution should be made available for auxiliary and ancillary systems. The induction motor is supplied with a three-phase power converter that is called an inverter. The inverter is controlled with pulse width modulation to provide a set of quasi-sinusoidal currents through the machine’s inductance. Any three-phase system of measures can be transformed into an orthogonal system through a Clarke transform. Switched reluctance motor drives are used for propulsion due to advantages like wide speed operation area, simple and robust construction, lack of the iron core, and air resistance loss seen in the rotor machines like induction or brushless dc machines. The electric propulsion is implemented with one of the possible electrical motors. Due to the power level and the performance requirements, electrical motors used for propulsion are three-phase ac motors.
