Optimization of the Cooling Parameters of a 250 kW PMSM by Taguchi Method
Keywords:PMSM, Thermal Model, Magnetic Model, Efficiency, 3D Parametric Design, Cooling Methodology
Nowadays, Permanent Magnet Synchronous Motors (PMSM) are researched for the development of electric motors to work more efficiently with electric vehicles. PMSMs can be classified according to their mechanical and electrical topologies. PMSM can be shown as the most efficient motor among all motor types, with their unique structures to provide high torque values at high rpm values. It has higher efficiency values by showing higher performance at lower motor volumes compared to motor types with the same power.
The biggest problem of electric motors is the serious decrease in efficiency out of the ideal operating temperature. In response to variable ambient temperature or sudden torque and power demands, a sudden temperature increase occurs. In this study, a nine-phase, 250 kW PMSM was considered, and both the magnetic and thermal models of this motor with heat losses are studied. It is aimed to improve the motor efficiency, which is cooled with refrigerant through the fixed parallel channels on the stator, by changing the critical variables determined on the cooling jacket.
As a result of this study, the life span of the mechanical parts that make up the motor and the efficiency of the motor will increase when the motor works at the ideal operating temperature.
Copyright (c) 2022 Mert Bedirhan Genc
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