An examination of magnetic property variation of specification-acceptable electrical steel

Sprague, Steve

doi:10.1109/icelmach.2012.6350024

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…First of all, when evaluating identical steel qualities, a spread from 14% [21] to 25% [18] of the actual losses has been reported between product batches. Second, machines are constructed by lamination resulting in practical imperfections due to mechanical operations such as cutting and stamping, insulation, and physical construction, adding more additional losses [22], [23].…”

Section: B Iron Losses In An Lspmmmentioning

confidence: 99%

Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature

Debruyne

Polikarpova

Derammelaere

et al. 2014

IEEE Trans. Ind. Electron.

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Abstract-The standard squirrel-cage induction machine has nearly reached its maximum efficiency. In order to further increase the energy efficiency of electrical machines, the use of permanent magnets in combination with the robust design and the line start capability of the induction machine is extensively investigated. Many experimental designs have been suggested in literature, but recently, these line-start permanent-magnet machines (LSPMMs) have become off-the-shelf products available in a power range up to 7.5 kW. The permanent magnet flux density is a function of the operating temperature. Consequently, the temperature will affect almost every electrical quantity of the machine, including current, torque, and efficiency. In this paper, the efficiency of an off-the-shelf 4-kW three-phase LSPMM is evaluated as a function of the temperature by both finite-element modeling and by practical measurements. In order to obtain stator, rotor, and permanent magnet temperatures, lumped thermal modeling is used.

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Section: B Iron Losses In An Lspmmmentioning

confidence: 99%

Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature

Debruyne

Polikarpova

Derammelaere

et al. 2014

IEEE Trans. Ind. Electron.

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“…The properties of steel in the fabricated stator will be changed during the manufacturing process [8]. Reference [9] analyzes potential variations in the performance of the machine caused by the expected variations of the magnetic properties of steel, such as eddy current loss differences due to thickness variation etc. Reference [10] shows that core loss increases due to the punching process, but that an annealing process can remove of this increased core loss, which is also shown in [11].…”

Section: Introductionmentioning

confidence: 99%

Core loss measurement in a fabricated stator of a single-sided axial flux permanent magnet machine

Patterson

Hudgins

2013

2013 International Electric Machines &Amp; Drives Conference

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Abstract-Core loss prediction and measurement has always been a concern for electrical machine design engineers. In this paper, a method is proposed to measure the core loss in a fabricated stator of a single-sided axial flux permanent magnet machine. The core loss data in the back iron and in a single tooth are measured separately, eliminating the use of any correction factor. The core loss data measured in the fabricated stator is compared with measurements made on an identical toroid to the one from which the stator is fabricated by milling slots, before the milling operation. The purpose of his work is to get the actual core loss as accurately as possible for later loss separation research.

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Sensitivity Analysis of Manufacturing Tolerances in Permanent Magnet Synchronous Machines With Stator Segmentation

Kolb

Hameyer

2020

IEEE Trans. Energy Convers.

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An examination of magnetic property variation of specification-acceptable electrical steel

Cited by 6 publications

References 8 publications

Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature

Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature

Core loss measurement in a fabricated stator of a single-sided axial flux permanent magnet machine

Sensitivity Analysis of Manufacturing Tolerances in Permanent Magnet Synchronous Machines With Stator Segmentation

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