Investigation of induction motor temperature distribution in traction applications

[摘要] The relevance of thermal behavior investigation of traction induction motors is shown. The brief survey of techniques to monitor the temperature of an induction motors is carried out. The detailed multi-node equivalent thermal circuit of an induction motor is designed for steady state. The calculation technique of some units' thermal resistances by using of construction features and geometric sizes of an induction motor is shown. Results of thermal processes calculation for 14 kWAO-63-4 induction motor are shown. The adequacy of proposed thermal model is proved by means of good convergence of calculated results with the results obtained by the experimental investigation on the same induction motor. As a result of investigation, it is established that the slot winding of the stator located about on 2/3 of its length from the cooling air entrance has the highest value of temperature.

[发布机构] Bryansk State Technical University, 7, 50-letiya October Blvd, Bryansk; 241035, Russia^1;Moscow State University of Railway Engineering, 9 Obrazcova St., Moscow; 127994, Russia^2

[效力级别] 电工学

[关键词] Calculation techniques;Construction features;Equivalent thermal circuits;Experimental investigations;Geometric sizes;Thermal behaviors;Thermal process;Traction applications