The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Study in Post-Assembly Magnetization of Line Start Permanent Magnet Motor

영구자석 매입형 유도동기전동기의 조립 후 착자에 대한 연rn

  • 이철규 (한양대 전자전기제어계측공학과) ;
  • 권병일 (한양대 전기공학과)
  • Published : 2003.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper consists of a study in post-assembly magnetization of LSPM (Line Start Permanent Magnet Motor). Recently, LSPM is noted as an alternative to the induction motor because it offers a very high efficiency and unity power factor, And it is necessary for permanent magnets to be magnetized by means of post-assembly magnetization in LSPMS because of the manufacturing cost involved. The manufacturing process is also simpler in post-assembly magnetization than in pre-assembly magnetization. Generally, permanent magnet motors are magnetized by their own stator coil or by magnetizing fixtures. However, the permanent magnet in a LSPM is scarcely magnetized by using them because of the eddy current of the rotor bar. Hence, it is necessary to design a magnetizing fixture that overcomes this problem. In this paper, the author analyses the post-assembly magnetization of a LSPM and proposes a method for designing the magnetizing fixture. The method that the author proposes is to make the number of coil turns greater in order to reduce the effect of the eddy current of the rotor bars.

Keywords

References

  1. 오시덕외, '3.7kW급 유도성 기동 영구자석 매입형 동기 전동기 기술개발에 관한 연구 최종보고서, 산업자원부'. 2002.10
  2. 안준호, 조관열, '가전제품용 BLDC 전동기의 설계기술', 전력전자학회지, 제7권, 제4호, 2002.8
  3. G W. Jewell, D. Howe, T. S. Birch, 'Simulation of capacitor discharge magnetization', IEEE Transactions on Magnetics, vol .26, no.5, pp.1638-1640, 1990 https://doi.org/10.1109/20.104473
  4. Steingeroever Gmbh, 'Magnet-Physik User manual'
  5. J. Kelly. Lee, 'The Analysis of A Magnetic Fixture for A Multipole Nd-Fe-B Magnet', IEEE Transactions on Magnetics, vol .24, no.5, pp.2166-2171, 1988 https://doi.org/10.1109/20.3423
  6. 윤태호, 권병일, 박승찬, 우경일, '프라이자흐 모델과 유한요소법을 이용한 C. P. M.의 착자 특성 해석', 대한 전기학회 논문지, Vol. 49, No. 11, pp. 729-736, 2000. 11
  7. 박승찬, 윤태호, 권병일, 윤희수, 원성홍, '회전자 철심의 와전류를 고려한 BLDC 전동기의 유한 요소 해석', 대한 전기학회 논문지, vol. 48B, no. 3, pp. 110-117, 1999. 3
  8. G. W. Jewell, D. Howe, C. D. Riley, 'The Design of Radial-Field Multipole Impulse Magnetizing Fixtures for Isotropic NdFeB Magnets' IEEE Trans. on Magnetics, vol.33, no.1, pp.708-722, 1997 https://doi.org/10.1109/20.560103
  9. 백수현, 김수필, 'SPICE를 이용한 커패시터 방전 임펄스 착자 회로의 특성해석', 대한 전기학회 논문지, 제43권, 2호, pp.206-213, 1994
  10. 백수현, 김필수, '임펄스 착자요크의 열전달 모델링 및 특성해석', 대한 전기학회 논문지, 제43권, 3호, pp.381-387, 1994
  11. Pill-Soo Kim, Yong Kim, Byung-You Hong, 'An Investigation to Genral Characteristics of Impulse Magnetizer(I) Circuit, thermal and cost modeling of impulse magnetizer', Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE , vol.3, pp, 1707-1714, 1999 https://doi.org/10.1109/IAS.1999.805970