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Article type: Research Article
Authors: Sun, Donga | Di, Chonga | Bao, Xiaohuaa; | Li, Shihaoa | Zhu, Qinglongb
Affiliations: [a] Hefei University of Technology, Hefei, Anhui Province, China | [b] Anhui Province key laboratory of Large-scale Submersible Electric Pump and Accoutrements, Hefei, Anhui Province, China
Correspondence: [*] Corresponding author: Xiaohua Bao, Hefei University of Technology, Hefei 230009, Anhui Province, China. E-mail: baoxh@hfut.edu.cn
Abstract: Skewed slots are widely used in many industrial applications because they can effectively reduce electromagnetic vibration and noise. In order to eliminate axial electromagnetic force in ordinary skewed slots rotor, a double skewed slot was proposed, which can useful reduce axial electromagnetic force and is superior to traditional skewed slots on reducing the electromagnetic vibration and noise. However, it still suffers from the problem of the difficult manufacturing process in large-sized submersible motors. In this paper, a radial skewed slot to reduce the electromagnetic vibration and noise is proposed, which has the advantages of a simple manufacturing process and obvious effect about reducing noise. Large-sized submersible motors are noisier than ordinary motors but lack effective means to reduce electromagnetic vibration and noise. So this paper adopts 2-D FFT and multi-physics coupling analysis method to analyze and compare the performances of the straight slot and the radial skewed slot in large-sized submersible motors.
Keywords: Electromagnetic force, noise, radial skewed slot, vibration
DOI: 10.3233/JAE-220016
Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 70, no. 3, pp. 289-302, 2022
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