TY - JOUR
TI - Experimental and numerical investigation of thermal field for a motor and related factors sensitivities using combined CFD-Taguchi method
AU - Liang Xueqi
AU - Luo Huiqiang
AU - Zeng Min
AU - Wu Yining
AU - Wang Qiuwang
JN - Thermal Science
PY - 2019
VL - 23
IS - 14
SP - 1065
EP - 1077
PT - Article
AB - Over-temperature is a fatal problem when a motor is running. In this work,  the temperature and temperature rise of the motor are investigated  experimentally and numerically. The experiment is conducted by means of both  voltmeter-ammeter method and embedding thermal resistors, to obtain the mean  temperature and the local temperature of the stator coils, respectively.  The numerical calculation is carried out to study the temperature field of  the stator and the rotor, which agrees well with the experimental result.  What's more, the sensitivity analysis of eighteen factors to the temperature  is investigated using combined CFD-Taguchi method. The main conclusions are  drawn. Firstly, according to the numerical results, the maximal temperature  and the maximal temperature rise at rated speed are 143℃ and 99 K,  respectively. The values are 145.8℃ and 90 K, according to the experimental  results, which are lower than the temperature allowed, 180℃ and temperature  rise allowed, 125 K. Secondly, the sensitivity analysis results suggest that  the key factors influencing the temperature are in sequence the ambient  temperature, the copper loss, the thickness of the layers, the outside  convection heat transfer coefficient of crate, the iron loss at the tooth  and thermal conductivity of the insulation. The contact thermal resistance  and the thermal conductivity of the core in axial direction have little  influence on the temperature. The rank to the temperature rise is similar  except the ambient temperature, which has little effect on the temperature  rise.