Air cooling for a large-scale motor |
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| Authors: | Chih-Chung Chang Yu-Fu Kuo Jung-Chang Wang Sih-Li Chen |
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| Affiliation: | 1. Department of Mechanical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan;2. Department of Marine Engineering, College of Maritime Science and Management, National Taiwan Ocean University, Keelung 20224, Taiwan;1. National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China;2. College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China;1. Silesian University of Technology, Institute of Thermal Technology, Konarskiego 22, Gliwice, 44-100, Poland;2. Silesian University of Technology, Department of Power Electronics, Electrical Drives and Robotics, B. Krzywoustego 2, Gliwice, 44-100, Poland;1. Faculty of Engineering, Environment & Computing, Coventry University, Coventry, UK;2. School of Mechanical, Aerospace and Automotive Engineering, Coventry University, Coventry, UK;3. YASA Motors Ltd., Yarnton, Oxfordshire, UK;4. Centre for Mobility and Transport, Coventry University, Coventry, UK;5. School of CEM and the Centre for Mobility and Transport, Coventry University, Coventry, UK;1. School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China;2. School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China;3. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | This article experimentally and numerically investigates the thermal performance of a large-scale motor with a capacity of 2350 kW. The large-scale motor consists of a centrifugal fan, two axial fans, a shaft, a stator, a rotor and a heat exchanger with 637 cooling tubes. The test rigs are set up to measure the performance of the fans and the temperature distributions of the motor. The models of the fan and motor have been implemented in a Fluent software package to predict the flow and temperature fields inside the motor. The calculated results show good agreement with the measured data. In order to improve the motor thermal performance, several methods have been adopted, which are aiming to enhance the fan performance by changing the geometry, to redesign a new heat exchanger with guide vanes, and to optimize the distance between the axial fans. The modified design can decrease the temperature rise by 6 °C in both the stator and rotor. |
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