Analysis of the Magnetic Flux Distribution in a New Shifted Non-Segmented Grain Oriented AC Motor Magnetic Circuit

Parent, Guillaume; Penin, Rémi; Lecointe, Jean‐Philippe; Brudny, J.F.; Belgrand, Thierry

doi:10.1109/tmag.2013.2244586

Cited by 15 publications

(9 citation statements)

References 10 publications

(11 reference statements)

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“…This phenomenon is similar to those been described in the literature [10] and can be explained as the magnetic flux prefers to follow the RD as long as possible in order to respect the principle of energy minimization.…”

Section: Non-segmented Shifted Structuresupporting

confidence: 85%

“…In order to be able to overcome these constraints, the authors propose to use a new magnetic circuit made of non-segmented GO electrical steel. Indeed, many studies, in this field, realized by our laboratory show the increasing performance of the machine by using the shifted techniques [8][9][10]. In order to push forward these investigations, in this article, the authors purpose the employment of segmentedshifted GO sheets to design a magnetic circuit.…”

Section: Introductionmentioning

confidence: 99%

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The use of segmented-shifted grain-oriented sheets in magnetic circuits of small AC motors

et al. 2019

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In order to increase energy efficiency of AC rotating machines, one possibility is the use of Grain-Oriented steel sheets to build stator magnetic circuits in order to reduce iron losses. After presenting the general concept considering a non-segmented-shifted sheets prototype recently developed in our laboratory, a segmented structure is introduced. Experimental comparisons between these structures are performed using static machines. The main results are analysed using Finite Element modelling that leads to extract the particular physical concepts which govern these associations.

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Section: Non-segmented Shifted Structuresupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

The use of segmented-shifted grain-oriented sheets in magnetic circuits of small AC motors

et al. 2019

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“…This principle forces the magnetic flux to pass from one lamination to another, along the z axis, in order to satisfy the principle of energy minimization [10,11]. This particular circulation of magnetic flux has been confirmed by 3D Finite Element simulations [12]. Another important result of this study is that the air-gap between sheets (due to the insulated coating which thickness is 6 to 8 µm) has a very low influence on the flux repartition.…”

Section: Principlesupporting

confidence: 61%

Non-Segmented Grain Oriented Steel in Induction Machines

Cassoret¹,

Lopez²,

Brudny³

et al. 2014

PIER C

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Abstract-This paper presents a technique which improves energy efficiency of AC rotating machines by using Grain Oriented (GO) steel at stator core instead of Non Oriented (NO) steel. The losses of GO steel are lower than the NO ones, but only when the magnetic flux circulates along the rolling direction; consequently it is rarely used in AC machines where the magnetic flux rotates. By stacking many shifted GO laminations of AC machine stator, the flux pass from one lamination to another, and the core losses are reduced. A lot of experimentations have been done with unidirectional field, rotating field and with real induction machines. They show important improvements with GO shifted steel. The efficiency difference between a classical 10 kW induction machine and a modified machine with GO stator is more than 2 points. Moreover, the no-load current, and so the reactive power are smaller. This technique creates environmental and financial gains.

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“…This hypothesis is valid because the short frame dimensions are much bigger than the corner size. Simulations of magnetic behaviour of the laminations [ 2 , 9 , 10 ] performed with Finite Element software shows that this hypothesis is consistent especially for the GOES because the magnetic polarisation tends to lay along the RD as far as possible in the corner before it changes direction towards adjacent lamination.…”

Section: The Reasons For Using Three Different Frame Sizesmentioning

confidence: 73%

Determination of Specific Losses in the Limbs of an Epstein Frame Using a Three Epstein Frame Methodology Applied to Grain Oriented Electrical Steels

Parent

Penin

Lecointe

et al. 2016

Sensors

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An experimental method to characterize the magnetic properties of Grain Oriented Electrical Steel in the rolling direction is proposed in this paper. It relies on the use of three 25 cm Epstein frames combined to generate three test-frames of different lengths. This enables the identification of the effective specific losses of the electrical steel when magnetization is applied along the rolling direction. As a consequence, it evidences the deviation of the loss figures obtained using the standardised Epstein test. The difference in losses is explained by the fact that the described method gives “only” the losses attached to the straight parts. The concept of the magnetic path length as defined by the standard is discussed.

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Analysis of the Magnetic Flux Distribution in a New Shifted Non-Segmented Grain Oriented AC Motor Magnetic Circuit

Cited by 15 publications

References 10 publications

The use of segmented-shifted grain-oriented sheets in magnetic circuits of small AC motors

The use of segmented-shifted grain-oriented sheets in magnetic circuits of small AC motors

Non-Segmented Grain Oriented Steel in Induction Machines

Determination of Specific Losses in the Limbs of an Epstein Frame Using a Three Epstein Frame Methodology Applied to Grain Oriented Electrical Steels

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