The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Voronoi Simulation on the Puncture Phenomena of ZnO Varistors

ZnO 바리스터의 펑처 현상에 관한 보로노이 시뮬레이션

  • Lee, Yeong-Jong (Dept. of Electrical Engineering, Engineering Collage, Hanyang University) ;
  • Hwang, Hwi-Dong (Dept. of Electrical Engineering, Engineering Collage, Hanyang University) ;
  • Han, Se-Won (Dept. of Electrical Engineering, Engineering Collage, Hanyang University) ;
  • Gang, Hyeong-Bu (Hanyang University)
  • 이영종 (한양대 공대 전기공학과) ;
  • 황휘동 (한양대 공대 전기공학과) ;
  • 한세원 (한양대 공대 전기공학과) ;
  • 강형부 (한양대 공대 전자전기공학부)
  • Published : 1999.02.01
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Abstract

ZnO Varistor is an electronic ceramic device to absorb the surge voltage from low voltage to high. To investigate the puncture mechanism occurring in NnO varistor, the Voronoi simulation for formulating the relation between the applied voltage and the increase of the temperature inside grain is applied. The Voronoi network can realize the structure of the practical varistor better than the established simple network. Using the current through each grain and the voltage applied to the grain, Joule heating energy is calculated and the phenomenon that the puncture occurs can be analyzed quantitatively by simulating the electric and thermal characteristics according to the externally applied pulsed voltage.

Keywords

References

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