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Properties of Electrical Performance on Stator Coil of Traction Motor by Accelerated lest using Transient Surge

과도서지를 이용한 가속열화 시험법에 따른 견인전동기 고정자 코일의 전기적 특성 변화

  • 박현준 (한국철도기술연구원 전기신호연구본부) ;
  • 장동욱 (한국철도기술연구원 전기신호연구본부) ;
  • 이길헌 (한국철도기술연구원 전기신호연구본부) ;
  • 최종선 (홍익대학교 전기정보제어공학과) ;
  • 김저우 (홍익대학교 전기정보제어공학과)
  • Published : 2003.09.01

Abstract

The winding problems of traction motor are the major determinant of motor's life. The root cause of winding failure is gradual deterioration of the insulation due to thermal, electrical, mechanical and environmental stresses. The aging of the insulation reduces the electrical and mechanical strength of the insulation. At same point, a voltage surge or mechanical shock from a traction motor start will fracture or break down the insulation. To achieve the expected life usually requires extensive laboratory evaluation of the insulation systems and the use of accelerated aging tests. There are several nondestructive test available for checking, the condition of motor insulation, the probable extent of aging, and the rate of which aging is taking place. So the insulation characteristics of stator coil were each analyzed by measurement of dielectric loss(tan$\sigma$), capacitance and partial discharge. The method of diagnosis is able to analyze the insulation condition and evaluate the life of the traction motor.

Keywords

References

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