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박관수(Gwan-soo Park),이향범(Hyang-beom Lee),배동진(Dong-jin Bae),한송엽(Song-yop Hahn),최홍순(Hong-soo Choi),홍정표(Jung-pyo Hong),주관정(Kwan-jeong Joo) 한국자기학회 1992 韓國磁氣學會誌 Vol.2 No.2
The characteristics of electromagnetic devices with permanent magnet depends greatly on the remanence pattern of permanent magnet. So, it is necessary to analyze the pattern of remanence in permanent magnet. This paper presents a finite element analysis of magnetizer considering the nonlinearity and anisotropy of yoke and magnet in magnetizer. The distributions of magnetizations are obtained according to the variations of magnetizing currents for two kinds of magnetizers with different magnetizing poles. It is found that the excessive magnetizing current results in the reduction and polarity reversion of magnetization in the multi-pole magnetizing system where the pole angle is too small. During the design and analyzing of multi-pole magnetizer, it must be considered that there exists an optimal value of magnetizing current and pole angle of magnetizer.
이기주(Gi-Ju Lee),이호영(Ho-Young Lee),이의천(Eui-Chun Lee),박수환(Soo-Hwan Park),권순오(Soon-O Kwon),최홍순(Hong-Soon Choi),서장호(Jangho Seo) 대한전기학회 2020 전기학회논문지 Vol.69 No.5
As the motor becomes smaller, it is an effective way to consider the AC resistance when analyzing. Motor analysis is usually interpreted as a stranded type. If it is a low speed analysis with the type, the AC resistance cannot be considered. Therefore, in this paper, we analyze the AC resistance of Round-Coil, MSO-Coil, and Stranded models and check the difference between them.