Induction, permanent magnet synchronous and synchronous reluctance motors – what is the difference?
Traction motors are three-phase AC machines controlled via power electronics. The differences and similarities in the construction and control of the three main traction motors – induction machine, interior permanent magnet and synchronous reluctance – are explored in this presentation. The field-oriented control of these types of motors is outlined, and it is shown that the motors are interchangeable when it comes to control. Simulation and model-based design techniques to create and test the embedded control of the complete traction motor drive are presented. The three main traction motors are compared, with some surprising results regarding efficiency and total costs.