전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제57권10호
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  • Pages.1752-1758
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  • 2008
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

영구자석형 모터의 프릭션 토크 저감을 위한 고정자 철심의 열처리 및 발생원 분석

Heat Treatment of Stator Core in Permanent Magnet Type Motor for Reduction of Friction Torque and Analysis of Their Cause

  • 발행 : 2008.10.01
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초록

This paper deals with the reduction of friction torque in permanent magnet motors by using the heat treatment of stator core. The stator core is made of electrical steel sheared by the punching die. From the punching process, large mechanical stress acting on the edge of stator tooth induces significant plastic and elastic deformation and then cause the change of magnetization properties. Then, the mechanical and magnetic unbalance in the sheared region of stator tooth produced by material cutting has influence on the friction torque. This paper investigated the effect of the punching process on the magnetization process and the mechanical deformation, and then proposed the stress relief annealing method for the reduction of friction torque among one of motor characteristics.

키워드

참고문헌

  1. 홍정표, 하경호, '자성재료를 이용한 전자에너지 변환기기의 설계 및 특성,' 한국전기전자재료학회 춘계학술대회 논문집, pp. 1-5, 4, 2002
  2. A. Honda et al., 'Efficiency of Model Induction Motor Using Various Non-Oriented Electrical Steels', Journal of Material Science Technology, Vol. 16, No. 2, pp.238-248, 2000
  3. M. Kawano, T. Fujiyama and T. Aoki, 'Electrical Steels for High-Functional Automotive Electrical Components Corresponding to Energy Saving,' Kawasaki Steel Technical Report, Vol. 48, pp. 47-52, 2003
  4. T. Wakisaka, T. Kubota and C. KAido, 'Best Selection of Motor Core Materials for Reduction of Motor ore Losses,' The Papers of Technical Meeting on Magnetics, IEEJ, RM -99-126, 1999
  5. T. Uda, M. Nakano and J. Fujiwara and N. Takahashi, 'A Method of Measurement of Magnetic Properties of Stress-Loaded Silicon Steel Sheets,' The Papers of Technical Meeting on Magnetics, IEEJ, MAG-01-83, pp.1-6, 2001
  6. M. Nakaoka, et. al, 'Examination of Temperature Characteristics of Magnetic Properties Using a Single Sheet Tester,' IEEJ, Vol 125-A, No. 1, pp.63-68, 2005
  7. M. Nakaoka et. al, 'Investigation of Effects of Cutting Strain and Compressive Force on Magnetic Properties Using a Single Sheet Tester,' Proc. of 16th Soft Magnetic Materials Conf., T2-28, 2003
  8. M. Enokizono, 'Two-dimensional Magnetic Properties,' IEEJ, Vol. 115, No.1, pp.1-8, 1995 https://doi.org/10.1541/ieejjournal.115.1
  9. M. Satoh, S. Kaneko and M. Tomita, 'Stator Shape Improvement to Decrease Iron Loss Caused by Shrink Fit Utilizing Physical Properties of Electrical Steel Sheet,' IEEJ Trans. IA, Vol. 127, No. 1, pp.60-68, 2007 https://doi.org/10.1541/ieejias.127.60
  10. K. Yamamoto, E. Shimomura, K. Yamada and T . Sasaki, 'Effects of External Stress on Magnetic Properties in Motor Core,' IEEJ, Vol. 117-A, No. 3, pp.311-316, 1997
  11. C. Kaido, J. Yamasaki and K. Hanzawa, 'Core Material Parameter Analysis of Torque Characteristics of Small Motor,' IEEJ Tans. IA, Vol. 126, No. 12, pp.1706-1711, 2006 https://doi.org/10.1541/ieejias.126.1706
  12. M. Takezawa et al.,'Effect of Strain by Mechanical Punching on Non-Oriented Si-Fe Electrical Sheets for 9-slot Motor Core,' IEEE Trans. on Magnetics, Vol 42, No. 10, pp. 2790-2792, 2006 https://doi.org/10.1109/TMAG.2006.879900
  13. S. Yamaguchi and A. Daikoku and N. Takahashi, 'Cogging Torque Calculation Considering Magnetic Anisotropy for Permanent Magnet Synchronous Motors,' COMPEL, Vol. 23, No. 3, pp.639-645, 2004 https://doi.org/10.1108/03321640410540548
  14. A. Daikoku et al. 'Cogging Torque Calculation Considering Stator Core Stress Resulting from Frame in Permanent Magnet Motor,' IEEJ, RM-03-74, pp.13-18, 2003
  15. International Standard, 'MAGNETIC MATERIALS - part 2 : method of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame,' IEC 60404-2