Abstract
Axial flux surface mounted permanent magnet BLDC machines are of particular interest for power generation in typical and confined conditions. Due to their compactness & high power density, the ventilation and cooling inside axial flux permanent magnet BLDC machine have become increasingly important for further performance improvement. This paper describes a lumped parameter thermal model of Axial flux Surface Mounted Permanent Magnet BLDC Machine. The transient thermal characteristics and steady state temperature of the motor are estimated from a lumped parameter thermal model. The transient characteristic has been also simulated mathematically, developments of a lumped parameter, thermal modelling technique for axial flux permanent magnet generators. Lumped parameter thermal network is developed to predict the motor heat flow and nodal temperatures. The network is composed of 29 interconnected nodes, 63 thermal resistances and 29 capacitors representing the heat process within motor for steady state and transient analysis.
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