Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2004.07b
- /
- Pages.862-865
- /
- 2004
Analysis of Rotor Vibration Types Caused by Air-gap Flux Variations in Induction Motors
유도전동기 공극자속 변화에 따른 진동유형 해석
-
Hwang Don-Ha
(Korea Electrotechnology Research Institute (KERI))
;
-
Lee Ki-Chang
(Korea Electrotechnology Research Institute (KERI))
;
-
Lee Joo-Hoon
(Korea Electrotechnology Research Institute (KERI))
;
-
Kim Yong-Joo
(Korea Electrotechnology Research Institute (KERI))
;
- Choi Kyeong-Ho (Kyungbuk College) ;
- Lee Jin-Hee (RIST)
- Published : 2004.07.01
Abstract
Faults such as broken rotor bars, static and dynamic eccentricity are often reported in induction motors. These faults increase the down-time of equipment, which causes major loss of earnings to the industry. This paper presents a result of the finite-element(FE) analysis of air-gap flux variation in induction motors when rotor vibration conditions occur, An accurate modelling and analysis of rotor vibration in the machine are developed using FE software packages, and measuring the flux are made using the search coils. In the FE analysis, an induction motor with 380 [V], 5[HP], 4 Poles, 1742 [rpm] ratings is used. The results of FE analysis can be used for on-line vibration monitoring of the induction motors.
Keywords