Title :
Effects of off-center of rotor on distributions of electromagnetic force
Author :
Kawase, Yoshihiro ; Yamaguchi, Tadashi ; Sano, Shinya ; Yano, Toshiyuki ; Igata, Masao ; Ida, Kazuo ; Yamagiwa, Akio
Author_Institution :
Dept. of Inf. Sci., Gifu Univ., Japan
fDate :
5/1/2005 12:00:00 AM
Abstract :
Some of the motors used for compressors of air-conditioners are cantilevered. The noise of the motor becomes louder when the rotor is off-centered. Therefore, it is important to analyze the motor with an off-centered rotor in order to reduce the noise from such motors, because it is not easy to measure the degree of the off-center in experiments. In this paper, an interior permanent-magnet motor with the off-centered rotor is analyzed using the three-dimensional finite-element method. Consequently, the effects of the off-center of rotor on the electromagnetic distributions and those harmonic components are quantitatively clarified.
Keywords :
acoustic noise; air conditioning; compressors; electromagnetic forces; finite element analysis; permanent magnet motors; rotors; airconditioners; cantilevered rotor; electromagnetic distribution; finite-element method; interior permanent-magnet motor; nodal force method; noise reduction; off-center rotor; Compressors; Electromagnetic forces; Finite element methods; Magnetic analysis; Magnetic fields; Noise reduction; Permanent magnet motors; Rotors; Tensile stress; Torque; 3-D finite-element method; Cantilevered rotor; interior permanent-magnet motor; nodal force method; off-center;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.846213
