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표면 부착형 영구자석 전동기의 권선단락고장 센서리스 진단
안길준(Giljun Ahn),이준민(Junmin Lee),박찬희(Chan Hee Park),윤명백(Myeongbaek Youn),윤병동(Byeng D. Youn) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Surface-mounted permanent magnet synchronous motors (SPMSMs) are widely used in high precision control systems such as industrial robots. If inter-turn faults of SPMSM were not early detected, it may cause enormous financial loss. This study deals with the analysis of low severity level faults of SPMSM with various load condition. The mathematical model of SPMSM with low severity inter-turn faults is established and simulated. From the simulation results, the possibility of shorted circuit current as a fault indicator indicating the severity of fault was confirmed. Not only confirm the possibility, this study suggests the method to estimate the fault indicator without additional sensor such as accelerometer or voltage probe. The simulation of proposed method was conducted and the simulation results verify the effectiveness of proposed method as well.