• 대한전기학회
Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
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Title Cogging Torque Analysis According to Unevenly Magnetized Magnets in PM Motor
Authors 이동호(Dong-ho Lee) ; 정채림(Chae-lim Jeong) ; 이승태(Seung-Tae Lee) ; 허진(Jin Hur)
DOI http://doi.org/10.5370/KIEE.2018.67.2.199
Page pp.199-208
ISSN 1975-8359
Keywords Cogging torque ; Permanent magnet machine ; Torque ripple ; Uneven magnets
Abstract This paper investigated the effect of unevenly magnetized magnets to the cogging torque. First, through qualitative analysis of cogging torque, the generation of slot harmonic component is explained. Second, it is found that the slot harmonic can be suppressed by locating the magnets under specific condition even if the magnets are irregularly magnetized respect to each other. Finally, it is verified with the experimental result.