期刊
APPLIED THERMAL ENGINEERING
卷 75, 期 -, 页码 1-13出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2014.10.060
关键词
Heat transfer; Electric motor; Oil cooling; Experimental bench
The present study focuses on the use of lubricating oil as a coolant for electrical motors. Oil is introduced at each side of a 40 kW test machine to directly cool the stator coil end-windings. An experimental setup has been implemented to test different oil injection patterns. The influence of the oil flow rate, rotation speed and oil temperature has been investigated (40 L/h < 360 L/h, 50 degrees C < T-oil < 75 degrees C, 0 < omega <4600 rpm). The results show a strong dependence of the flow rate on global cooling performance, whereas the effect of rotation speed is smaller but can affect local temperature. (C) 2014 Elsevier Ltd. All rights reserved.
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