Ventilation Structure Improvement of Air-cooled Induction Motor Using Multiphysics Simulations

Yujiao Zhang, Xiongfeng Huang, Tao Huang, Jiangjun Ruan, Xiaowen Wu Xiaowen Wu


 Optimal design of large induction motor is a process that involves electrical and mechanical skills as well as thermal and fluid dynamic skills. For recent machine layouts, one cannot rely on standard analysis methods. In multiphysics simulations which are done by weak coupling finite-element method, rotation boundary values on interface between air gap and rotor cannot be applied directly for fluid-dynamical analysis. A novel multi-component fluid method is proposed to deal with the influence of rotor rotation upon the air convection. This paper investigates a 3-D multi-physics simulation used in simulation of temperature distribution in air-cooled induction motor. The temperature rise in motor is due to Joule’s losses in stator windings and the induced eddy current in squirrel cages, and heat dissipation by air convection and solid conduction. The Joule’s losses calculated by 3-D eddy-current field analysis are used as the input for the thermal field analysis, which deeply depends on accurate air fluid field analysis. Through the coupled-field calculation, we proposed a new ventilation structure of a 15-phase motor to improve the cooling performance.

Full Text:



Nyambayar Baatar, Shiho Kim. A Thermoelectric Generator Replacing Radiator of Internal Combustion Engine Vehicles. TELKOMNIKA. 2011; 9(3): 523-530.

Luigi Alberti, Nicola Bianchi. A Coupled Thermal-Electromagnetic Analysis for a Rapid and Accurate Prediction of IM Performance. IEEE Transactions on Industrial Electronics. 2008; 55(10): 3575-3582.

F Marignetti, V Delli Colli, Yuri Coia. Design of Axial Flux PM Synchronous Machines Through 3-D Coupled Electromagnetic Thermal and Fluid-Dynamical Finite-Element Analysis. IEEE Transactions on Industrial Electronics. 2008; 55(10): 3591-3601.

Takafumi Nakahama, Debasish Biswas, Koichiro Kawano. Improved Cooling Performance of Large Motors Using Fans. IEEE Transactions on Energy Conversion. 2006; 21(2): 324-331.

W N Fu, S L Ho. A 2-Dimensional Finite-Element Method for Transient Magnetic Field Computation Taking Into Account Parasitic Capacitive Effects. IEEE Transactions on Applied Superconductivity. 2010; 20(3): 1869-1873.

E Dlala, A Arkkio. A General Model for Investigating the Effects of the Frequency Converter on the Magnetic Iron Losses of a Squirrel-Cage Induction Motor. IEEE Transactions on Magnetics. 2009; 45(9): 3303 – 3315.

M J Islam, H V Khang, A K Repo. Eddy-Current Loss and Temperature Rise in the Form-Wound Stator Winding of an Inverter-Fed Cage Induction Motor. IEEE Transactions on Magnetics. 2010; 46(8): 3413-3416.

S Mezani, N Takorabet, B Laporte. A combined electromagnetic and thermal analysis of induction motors. IEEE Transactions on Magnetics. 2005; 41(5): 1572-1575.

S. L. Ho, Y. Li, X. Lin. Calculations of eddy current, fluid, and thermal fields in an air insulated bus duct system. IEEE Transactions on Magnetics. 2007; 43(4): 1433-1436.

S L Ho, Y Li, X Lin. A 3-D study of eddy current field and temperature rises in a compact bus duct system. IEEE Transactions on Magnetics. 2006; 42(4): 987-990.

Y J Zhang, J J Ruan, Tao Huang. Calculation of Temperature Rise in Air-cooled Induction Motors through 3-D Coupled Electromagnetic Fluid-Dynamical and Thermal Finite-Element Analysis. IEEE Transactions on Magnetics. 2012; 48(2): 1047-1050.

Didi Istardi, Andy Triwinarko. Induction Heating Process Design Using COMSOL Multiphysics Software. TELKOMNIKA. 2011; 9(2): 327-334.

A G Jack, B C Mecrow. Methods for Magnetically Nonlinear Problems Involving Significant Hysteresis and Eddy currents. IEEE Transactions on Magnetics. 1990; 26(2): 424-429.

J H Yoon, H S Ahn, J Choi. An estimation technology of temperature rise in GIS bus bar using three-dimensional coupled-field Multiphysics. 2008 IEEE International Symposium on Electrical Insulation. Vancouver. 2008; 1: 432-436.

W L Li, S Y Ding, H Y Jin. Numerical calculation of multi-coupled fields in large salient synchronous generator. IEEE Transactions on Magnetics. 2007; 43(4): 1449-1452.

Yuangjiang Liu, Yangsoo Lee, Hyun-kyo Jung. 3D Thermal Stress Analysis of the Rotor of an Induction Motor. IEEE Transactions on Magnetics. 2000; 36(4): 1394-1397.



  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

TELKOMNIKA Telecommunication, Computing, Electronics and Control
ISSN: 1693-6930, e-ISSN: 2302-9293
Universitas Ahmad Dahlan, 4th Campus
Jl. Ringroad Selatan, Kragilan, Tamanan, Banguntapan, Bantul, Yogyakarta, Indonesia 55191
Phone: +62 (274) 563515, 511830, 379418, 371120
Fax: +62 274 564604