Three-phase squirrel-cage induction motors (IMs) have been widely used as power sources for many electrical machines since a long time. Therefore, Cost reduction of IMs is urgently required. Cost reduction can be realized when concentrated winding (CW) is applied to an IM. However, the harmonic fluxes in the air gaps of a CW-IM generally increase, leading to an inevitable deterioration of its characteristics. Our study aimed at realizing a high-performance low-cost CW-IM, and to this end, we made a trial small-sized two-pole CW-IM. This paper introduces the trial CW-IM and discusses its basic characteristics. A comparison of the characteristics of a CW-IM and a distributed winding IM (DW-IM) which is base for CW-IM are shown. The results show that the torque of the CW-IM at low slip conditions is similar to that of the DW-IM; however, an abnormal starting phenomenon owing to low harmonics in the air gap occurs.
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页码:280 / 284
页数:5
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[1]
[Anonymous], 2010, ELECT MACHINE POWER
[2]
The Japanese electrotechnical committee`, 2017, JEC21102017