Rotor Design for an Efficient Single-Phase Induction Motor for Refrigerator Compressors

Hyun-Jin Ahn, Kang-Won Kim, Joon-Ho Choi, Eui-Sun Kim and Young-Cheol Lim
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Hyun-Jin Ahn: Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, Korea
Kang-Won Kim: Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, Korea
Joon-Ho Choi: Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, Korea
Eui-Sun Kim: Department of Information and Communication, Shingyeong University, Hwaseong 445-852, Korea
Young-Cheol Lim: Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, Korea

Energies, 2016, vol. 9, issue 3, 1-16

Abstract: This article describes a rotor making technology for the production of high-efficiency single-phase induction motors (SPIMs) to be used in refrigerator compressors. Rotors can have different aluminum fill factors according to the fabrication method. In order to examine the association between the fill factor and the efficiency of the rotor, we analyzed the distribution of magnetic flux density using the finite element method (FEM). Next, we made prototype rotors by conventional casting methods and by the proposed casting method and compared their fill factors. In addition, SPIMs were made using the rotors, and their efficiencies were measured using a dynamometer. Moreover, the SPIMs were put to use in a compressor, for testing, and for each SPIM the refrigerating capacity of the compressor was measured with a calorimeter. Based on the results of the FEM analysis of the magnetic flux density and the experiments, the reliability and validity of the proposed method were proven.

Keywords: single-phase induction motor; finite element method; fill factor; pressure die-casting; centrifugal casting; compressor; rotor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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