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대용량 유도전동기의 부하 운전 시 자기 소음 특성 해석
권병훈(Gil-Dong Hong),전태원(Tae-Won Chun),이홍희(Hong-Hee Lee),김흥근(Heung-Gun Kim) 대한전기학회 2009 전기학회논문지 Vol.58 No.3
When a squirrel cage induction motor is loaded, the magnetic noise can increase depending on the load current. It is due to the variation of air gap harmonic fluxes from the rotor current induced by loading. This unfavorable noise can be anticipated by analysing the radial force waves in the air gap, the mode shapes of them, and stator core natural frequencies at each mode. With the experimental tests with the different rotor slot numbers, the variation of magnetic noise depending on the load current is studied and the method to reduce the magnetic noise is suggested with the newly developed magnetic noise analysis program.