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http://dx.doi.org/10.4283/JKMS.2016.26.6.206

Study on Enhancement of Magnetic Contact Forces between Iron Bed and Back Yoke in Electric Motor  

Kwon, Oh-Gyu (Kyungpook National University)
Kim, Gui-Hwan (Kyungpook National University)
Choi, Hong-Soon (Kyungpook National University)
Publication Information
Journal of the Korean Magnetics Society / v.26, no.6, 2016 , pp. 206-212 More about this Journal
Abstract
The shape of a iron bed supporting a permanent magnet in a large-sized motor is a important factor for determining the coupling strength with the yoke. In a large-sized motor, there is a difference in electromagnetic force with the yoke depending on the shape of the iron bed. In this paper, we show the differences and problems by calculating the electromagnetic force between the double bed and the single bed through the virtual air gap, and show that the single bed is superior in terms of the binding force. It is also shown that the binding force between the bed and the yoke is improved by carving the groove shape under the bed.
Keywords
virtual air gap; double bed; single bed; groove; electromagnetic force;
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