1. Shenyang University of Technology Shenyang 110870 China; 2. Shenyang Institute of Engineering Shenyang 110136 China; 3. Queen’s University Belfast Belfast BT9 5AH UK
Abstract：For high speed machine, it is necessary to meet the requirements including elec- tromagnetic properties, mechanical properties and machine temperature,so it is a comprehensive multi-physics field iterative design process. In this paper, a 1.12MW, 18 000r/min high-speed PM machine is designed based on electromagnetic fields-rotor strength-rotor dynamics-fluid and temperature fields. On the basis of multi-physics analysis, the results meeting electromagnetic properties, rotor strength, critical speed, machine temperature rise are obtained. Finally, a prototype is manufactured. The electromagnetic experiment, rotor mechanical properties test and temperature test are conducted and the results show that the design method and multi-physics analysis are feasible and effective, by which a theory gist for the high power high speed PM machine is provided.
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2015, Vol. 30 
