Laminated iron core losses evaluation and measurements

Rovolis, P.; Kladas, Antonios G.; Tegopoulos, J.A.

doi:10.1016/j.jmatprotec.2006.03.024

Cited by 8 publications

(5 citation statements)

References 6 publications

(5 reference statements)

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“…The iron loss (W i [W/kg]) of the stator core can be evaluated using Equation (1). In this Equation, B ex [T] and H ex [A/m] represent the magnetic flux density and the magnetic field strength of the stator core, respectively.…”

Section: Evaluation Methods Of Iron Lossmentioning

confidence: 99%

See 1 more Smart Citation

Building Factor Evaluation of the Stator Core Made of Ultrathin Electrical Steel Sheet for the High-Speed Motor

Oka

Enokizono²,

Mori³

et al. 2018

MSF

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We are developing a low-loss stator core for high-speed and small-size motors using an ultrathin electrical steel sheet. This stator core for a high-speed motor was produced using a 0.08mm-thick ultrathin electrical steel sheet. Additionally, in order to evaluate the iron loss of the high-speed motor stator core, we constructed a high-speed building factor evaluation system. This evaluation system is composed of high-speed A/D converters, a D/A converter, and a high-speed power amplifier. TheB-Hcurve and the iron loss of the high-speed motor stator core (0.08mm_Core), which was made of the 0.08mm-thick ultrathin electrical steel sheet, were measured using the outer excitation method and the high-speed building factor evaluation system. The iron loss of the 0.08mm_Core was about 66% of the iron loss of the ordinary-speed motor stator core (the 0.35mm_Core) which was made of a 0.35mm-thick electrical steel sheet. Each iron loss in two kinds of cores was measured using the outer excitation method at the excitation frequency (fex) 1000Hz and the maximum excitation magnetic flux density (Bexmax) 1.0T. From experimental results, the iron loss of the 0.08mm_Core in the high frequency excitation was very small.

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Section: Evaluation Methods Of Iron Lossmentioning

confidence: 99%

“…It is well known that the iron loss of an electrical steel sheet used in a stator core deteriorates during manufacturing processes such as punching, laminating, etc. [1][2][3]. This problem is referred to as the building factor problem [4][5].…”

Section: Introductionmentioning

confidence: 99%

Building Factor Evaluation of the Stator Core Made of Ultrathin Electrical Steel Sheet for the High-Speed Motor

Oka

Enokizono²,

Mori³

et al. 2018

MSF

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“…It is established that iron loss (W i ) of the electrical steel sheet used in the rotating machine can be evaluated using Equation (1).…”

Section: Evaluation Methods Of the Iron Lossmentioning

confidence: 99%

“…If we can increase efficiency of rotating machines only 1%, the amount of energy saved would be equivalent to the output power of one nuclear power plant. Therefore, energy-saving technology for rotating machines is essential [1][2]. A highly effective rotating machine is being developed for the achievement of continuous energy savings.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Iron Loss Distribution of the Actual Stator Core Using Small Excitation Inner Cores

Oka

Shimada

Kawano

et al. 2012

MSF

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To obtain the basic data to manufacture the highly effective rotating machine, the axial iron loss distribution of an actual stator core of the complex structure was evaluated by using the small excitation inner core. The laminated thickness of this small excitation inner core is approximately 1/6 of the thickness of the stator core. Therefore, the circumferential iron loss distribution of the stator core and the axial iron loss distribution of a stator core can be measured by using this small excitation inner core. Then, to compare the difference of the axial iron loss distribution in the stator core, we investigated the axial iron loss distribution in the actual stator core after two manufacturing processes, the laminating process and the shrink fitting process. The iron losses were measured in three places (the edge, the quarter part, and the center) of two stator cores. As a result of our investigation, the axial iron loss distribution in the actual stator core clearly changed. This paper reports on the axial iron loss distribution in two manufacturing processes in two actual stator cores measured by using the small excitation inner core.

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“…One of the magnetic measurement techniques, the H-coil method is useful in order to get precise magnetizing field reading. An iron loss and the measurement are reported by many researchers [4,5,6].…”

Section: Introductionmentioning

confidence: 98%

Experimental Study on the Iron Loss Curve at High Field Strength of Non-Oriented Electrical Steel Sheet

Kanada¹,

Kutsukake²,

Kido³

et al. 2012

MSF

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Laminated iron core losses evaluation and measurements

Cited by 8 publications

References 6 publications

Building Factor Evaluation of the Stator Core Made of Ultrathin Electrical Steel Sheet for the High-Speed Motor

Building Factor Evaluation of the Stator Core Made of Ultrathin Electrical Steel Sheet for the High-Speed Motor

Evaluation of the Iron Loss Distribution of the Actual Stator Core Using Small Excitation Inner Cores

Experimental Study on the Iron Loss Curve at High Field Strength of Non-Oriented Electrical Steel Sheet

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