Design of High Speed Reluctance Synchronous Motor for Automotive Purposes

This paper deals with high speed electrical machines in automotive industrial and in common applications. The different types of electrical machines and their suitability for high speed utilization are discussed. Advantages and disadvantages of high speed reluctance synchronous machines (RSM) in comparison with other types of high speed machines are highlighted. The electromagnetic design of such a RSM is carried out on the base of known design procedures enriched by high speed approach. The stator consists of two layers, three phase winding with 12 and 24 slots will be analyzed to compare maximal, average torque and torque ripple. Calculations are carried out by means of finite element analysis (FEA). The different rotor topologies are designed, with multiple geometrical degrees of freedom. Different rotor topologies are also investigated by means of FEA to be able to compare the maximal, average torque and torque ripple. Further mechanical aspects of rotor for RSM are done. The selection of thickness of tangential and central bridges is taken into account. A mechanical stress in such designed machine is calculated versus various speed.

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