Development and performance investigation of permanent magnet synchronous traction motor

The paper deals with the design of permanent magnet synchronous traction motor (PMSM) that was based on volume and stator windings of asynchronous traction motor with an output power 210 kW. The proposed PMSM was built with permanent magnets (PM) placed on the surface of the rotor. There will be described the basic parameters as well as analytical analysis of losses in the machine, with emphasis on losses in PM, that depend on the size of PM and they may form a significant component of loss in the paper. In the paper will be also described the results of measurements realized on PMSM with rotor made in the initial versions of the rotor and three other modifications realized on the built rotor and their experimental verification and valuation in comparison with the theoretical knowledge. Finally they will be compared to the parameters of asynchronous traction motor (ATM) and PMSM with recommendations for mass production of the PMSM for applications in the traction vehicle.