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http://dx.doi.org/10.3795/KSME-B.2014.38.3.243

Loss and Heat Transfer Analysis for Reliability in High Speed and Low Torque Surface Mounted PM Synchronous Motors  

Choi, Moon Suk (School of Mechanical Engineering, Hanyang Univ.)
Um, Sukkee (School of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.38, no.3, 2014 , pp. 243-254 More about this Journal
Abstract
It is essential to predict the coil temperature under over load and over speed conditions for reliability in high speed low torque surface mounted PM synchronous motors(SPM). In the present study, the losses and coil temperature are measured under rated condition and calculated under over speed and over load conditions in the three different motors with 35PN440, 25PN250 and 15HTH1000. The heat transfer modeling has been performed based on acquired losses and temperature. The difference of coil temperature between heat transfer modeling and experiment is less than 6.4% under no load, over speed and over load conditions. Subsequently, the coil temperature of the motor with 15HTH1000 is 84.4% of the coil temperature of the motor with 35PN440 when speed is 0.9 and load is 3.0. The output of motor with 15HTH1000 is 85.2% greater than the output of the motor with 35PN440 when the dimensionless coil temperature is 1.0.
Keywords
Performance Loss; Surface-mounted Permanent Magnet Synchronous Motor (SPMSM); Thermal Resistance; Driving Condition;
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