Prediction of the heat transfer from the end winding of a TEFC strip-wound induction motor

The flow field and heat transfer in the end region of a TEFC induction motor have been simulated experimentally and computationally. The test rig included a strip-wound end winding taken from a two-pole production motor. A single loop of the winding was instrumented with thermocouples and miniature heat flux gauges and supplied with a heating current. The measured local heat transfer coefficients on the winding surface differed from the computed values by a maximum of 30%. Their spatial variations agreed closely in form and reflected the computed flow field.