Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A study of the Electron Beam Irradiator for Core-loss reduction of Grain-oriented silicon Steel

  • Kim Min (Department of Electrical and Electronic Engineering, Dong-shin University) ;
  • Yoon Jeong-Phil (Department of Electrical and Electronic Engineering, Dong-shin University) ;
  • Lee Gi-Je (Department of Electrical and Electronic Engineering, Dong-shin University) ;
  • Cha In-Su (Department of Electrical and Electronic Engineering, Dong-shin University) ;
  • Cho Sung-Oh (Laboratory for Quantum Optics Korea Atomic Energy Research Institute) ;
  • Lee Byeong-Cheol (Laboratory for Quantum Optics Korea Atomic Energy Research Institute) ;
  • Jeong Young-Uk (Laboratory for Quantum Optics Korea Atomic Energy Research Institute) ;
  • Yoo Jae-Gwon (Laboratory for Quantum Optics Korea Atomic Energy Research Institute) ;
  • Lee Jong-Min (Laboratory for Quantum Optics Korea Atomic Energy Research Institute)
  • Published : 2001.10.01
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Abstract

A new compact, low-energy electron beam irradiator has been developed. The core-loss of silicon steels can be reduced by magnetic-domain refinement method. The irradiator was developed for the application of core-loss reduction using the method. The beam energy of the irradiator can be varied from 35 to 80 keV and the maximum current is 3mA. The irradiation area is designed to be $30\times30mm2$ now and will be upgraded to $30\times150mm2$ using a scanning magnet and scanning cone. The electron beam generated from 3 mm diameter LaB6 is extracted to the air for the irradiation of the silicon steels in the air. A special irradiation port was developed for this low-energy irradiator. A havar foil with $4.08{\mu}m$ thickness were used for the window and a cold air-cooling system keeps the foil structure by removing heat at the window. The irradiator system and its operation characteristics will be discussed.

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