Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Method for Vibration Detection of Squirrel Cage Induction Motors Using the Flux Sensor

자속 센서를 이용한 농형 유도전동기의 진동검출 기법

  • Hwang, Don-Ha (Korea Electrotechnology Research Institute (KERI)) ;
  • Lee, Sang-Hwa (Korea Electrotechnology Research Institute (KERI)) ;
  • Han, Sang-Bo (Korea Electrotechnology Research Institute (KERI)) ;
  • Sun, Jong-Ho (Korea Electrotechnology Research Institute (KERI)) ;
  • Kang, Dong-Sik (Korea Electrotechnology Research Institute (KERI))
  • 황돈하 (한국전기연구원 전력설비진단연구그룹) ;
  • 이상화 (한국전기연구원 전력설비진단연구그룹) ;
  • 한상보 (한국전기연구원 전력설비진단연구그룹) ;
  • 선종호 (한국전기연구원 전력설비진단연구그룹) ;
  • 강동식 (한국전기연구원 전력설비진단연구그룹)
  • Published : 2007.07.18
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Abstract

This paper proposes an alternative vibration detection method in a squirrel-cage induction motor using flux sensors. The air-gap flux will be changed when mechanical vibration occurs by bearing fault as well as broken rotor bar and air-gap eccentricity. For detecting those flux variations due to vibration, search coils are installed at stator slots. The induction motor with 380 [V], 7.5 [kW], 4 [Poles], 1,760 [rpm] ratings is used. Magnitudes and distortion of the induced voltage from flux sensors are used to discriminate faulted types. As a result, the flux sensor has been proven to be useful for vibration detection. It is compared to the result with vibration sensor as well.

Keywords