Trial manufacture of magnetic anisotropic motor and evaluation of drag loss characteristics

Takeda, Susumu; Fujitani, Kohei; Odawara, Shunya; Fujisaki, Keisuke

doi:10.1109/icelmach.2014.6960467

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…As a consequence, the stacking factor of the GO stator is slightly higher (99.8%) than for the NO stator (97.7%). GO is known to have more stress sensitivity than NO Therefore, a jig 15) , which was manufactured so that a good geometrical accuracy can be kept, is prepared to avoid this type of stress. Fig.…”

Section: Trial Manufacture Of Magnetic Anisotropic Motormentioning

confidence: 99%

“…If one considers a space factor of 98% in a laminated core of 350 μm thick steel sheets, it makes an interlamination of approximately 7 μm. The assembly of yoke and tooth parts has been done using an accurate jig 15) that ensures similar clearance between pieces while limiting mechanical pressure in the lamination direction. The clearance is then likely to be larger than 7 μm and slightly different at each junction.…”

Section: Influence Of the Clearance Between The Stator Piecesmentioning

confidence: 99%

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Anisotropic Magnetic Core for the Iron Loss Reduction of Permanent Magnet Synchronous Motor

et al. 2018

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An interior permanent magnet synchronous motor (IPMSM) using a stator core made of grain-oriented (GO) anisotropic magnetic material is manufactured to evaluate the potential iron loss reduction that GO can bring compared to the conventionally used non-oriented (NO) quasi-isotropic silicon steel. The stator core is divided into yoke and teeth pieces that are arranged so that the GO material easy magnetization direction follows the main magnetic flux that flows in the core during the motor operation. The motor iron loss is measured under two conditions: 1) the IPMSM is rotated by an external motor ("drag force operation"), 2) the IPMSM is driven by a pulse-width modulation (PWM) inverter without load ("no-load operation"). The manufactured motor shows 13.5 % iron loss reduction during drag force operation and 5 % reduction during no-load operation. Numerical calculation is also carried out by 2-D finite element analysis (FEA) to confirm the experimental data.

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Section: Trial Manufacture Of Magnetic Anisotropic Motormentioning

confidence: 99%

Section: Influence Of the Clearance Between The Stator Piecesmentioning

confidence: 99%