ORGANIZATION : Intermag 2018
JOURNAL :
YEAR : 2018.04
VOL :
PAGE :
This paper analyzes of the effect of electric motor performance depending on the lamination method used (weld- and bondlamination).
First, to investigate the effects of the differences in the lamination method used on the magnetic characteristics of the core,
the initial magnetization curve and iron loss were compared by measuring. And 2-pole 31/24 slots induction motor was analyzed for
loss at rated load. In particular, magnetization inductance increased by 7.16% when the bond-lamination method was used. Therefore,
input current decreased and copper loss decreased by 2.66%. Next, a modal test was conducted to analyze the mechanical
characteristics of the two lamination methods. We compare the mode stiffness using the natural frequency and the mode damping
ratio using the logarithmic decrement. The damping ratio of circumferential mode shape 2 was 87.74% higher than that of weldlaminated
core. As a result, it was confirmed that the efficiency of the electric motor using the bond-lamination method increased by
0.35% and the overall vibration decreased by 2.5 dB through load test.