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Loss Minimization for Form-Wound Stator Winding of a High-Speed Induction Motor

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3 Author(s)
Khang, H.V. ; Dept. of Electr. Eng., Aalto Univ., Aalto, Finland ; Arkkio, A. ; Saari, J.

Resistive losses in the form-wound stator winding of a high-speed induction motor (HSIM) are minimized in the design stage by using Differential Evolution (DE). Time-discretized finite-element analysis (FEA) serves as a tool to offer electromagnetic losses in the machine for the optimization process. Temperature rise of the machines is fast checked during the optimization by using a thermal network model. Insulation thicknesses and power factor are other constraints in the algorithm. Time consumption of using time-discretized FEA is still a problem when a large number of variables or motor dimensions is required for the optimization algorithm. To reduce the number of required variables, the influence of stator dimensions on the electromagnetic losses is analyzed by using the Taguchi approach. From this evaluation, the important stator parameters to be varied during optimization algorithm are determined. Finally, form-wound stator winding with a minimum loss for a HSIM is obtained within certain limitations.

Published in:

Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 12 )