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JEET, Vol. 13, No. 6, November 2018
Effect of Axial-Layered Permanent-Magnet on Operating Temperature in Outer Rotor Machine
Ji-Young Lee
Area B - Electric Machinery and Power Electronics
Abstract This paper discusses the thermal effect of the number of permanent-magnet (PM) layers in an outer rotor machine. Depending on the number of axial-layer of PM, the operating temperature is compared analytically and experimentally. The electromagnetic analysis is performed using 3- dimensional time varying finite element method to get the heat sources depending on axial-layered PM models. Then thermal analysis is conducted using the lumped-parameter-thermal-network method for each case. Two outer rotor machines, which have the different number of axial-layer of PM, are manufactured and tested to validate the analysis results.
Keyword Axial-layered permanent magnet,Eddy current loss,Lumped-parameter-thermal-network.
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