Electric motors of large consumer products, challenges and trends from the perspective of power efficiency improvement through modern cutting technologies

Nemoianu, Iosif Vasile; Paltanea, Veronica Manescu; Păltânea, Gheorghe; Dascălu, Maria-Iuliana; Ciuceanu, Radu Mircea

doi:10.1109/zinc.2019.8769437

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…In the literature, we find the results of measuring the iron loss components, concerning the material with similar properties, showing that the increase in the hysteresis loss (averaged over the strip cross section) depends on the strip's width. For example, for an average magnetic induction of 1 T and strip width of 5 mm, the increase in hysteresis loss is 1.51 [35]. As the reference value, the authors used a hysteresis loss measured for a punched strip of 60 mm width.…”

Section: Discussionmentioning

confidence: 99%

Impact of a Punching Process on the SyRM Iron Loss: SPICE Model as an Effective Tool for Iron Loss Modeling

Gmyrek¹

2021

Energies

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Many technologies for cutting the magnetic laminations, from which electric motors cores are built, change material properties, among which are magnetizability and iron loss, thus affecting the motor parameters such as motor efficiency. This problem is particularly important for low-power motors, in which the dimensions of the magnetic circuit elements are relatively small. The correct estimation of the motor efficiency is important as early as at its design stage. This is possible when the correct material characteristics are used. This knowledge and analytical model enabling fast estimation of material properties (depending on the actual size) are necessary for engineers, who design electrical motors by analyzing many solution variants in a short time. The author proposes an analytical model of changing material properties, implemented in SPICE software. Its effectiveness was compared with measurement results while being a competitive solution in relation to other analytical models. The proposed SPICE model allowed evaluating material properties for lamination of any width. In the end, the knowledge concerning the material properties was used to calculate the iron loss in the stator of the SyRM motor, showing the need to use the material characteristics calculated for the specified width of the core piece.

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Section: Discussionmentioning

confidence: 99%

Impact of a Punching Process on the SyRM Iron Loss: SPICE Model as an Effective Tool for Iron Loss Modeling

Gmyrek¹

2021

Energies

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“…The method of cutting out induction motor core sheets has a significant impact on the operating parameters obtained, especially core losses and magnetizing current, and thus on motor efficiency, which is so important from the point of view of environmental impact. All cutting methods have an impact on the degradation of the material properties of the core, however, as can be seen from the results cited, laser cutting, quite commonly used especially for small series, can cause a significant The differences in measured and calculated core losses, especially visible when using laser cutting technology, result from the fact that, according to the proposed method, the calculations were carried out assuming that the depth of field penetration into the tooth heads was doubled when laser cutting and about 10% greater when cutting using EDM technology, in relation to the value resulting from Equation (2). Although this assumption gives calculation results approximate to the measured values, they can be both slightly larger and slightly smaller than the measurement results, but at the same time the error of this approximation is relatively small.…”

Section: Discussionmentioning

confidence: 99%

“…The differences in measured and calculated core losses, especially visible when using laser cutting technology, result from the fact that, according to the proposed method, the calculations were carried out assuming that the depth of field penetration into the tooth heads was doubled when laser cutting and about 10% greater when cutting using EDM technology, in relation to the value resulting from Equation (2). Although this assumption gives calculation results approximate to the measured values, they can be both slightly larger and slightly smaller than the measurement results, but at the same time the error of this approximation is relatively small…”

Section: Including the Impact Of Core Fabrication Technology In Analymentioning

confidence: 99%

“…The mechanical cutting is connected with material plastic deformation and strain hardening phenomena appear at the cut edge. Less commonly used methods, usually for small-scale series of products or prototypes are: laser cutting, wire-cut electrical discharge machining (spark erosion, EDM), or abrasive water jet cutting [1][2][3][4]. From those methods, the last two are known to have the lowest impact on the magnetic quality of the material, and their use is only suitable for small quantities due to their slow cutting speed and oxidation or corrosion phenomena.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Core Sheet Cutting Method on Parameters of Induction Motors

et al. 2020

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The method of cutting motor core sheets causes a change in their magnetic properties and core losses, especially additional losses. Reducing motor losses is very important because of the fulfillment of increasingly stringent requirements set by international regulations for reducing electricity consumption. Due to fact that more and more often induction motors are supplied with high-frequency voltage, core losses are beginning to play a dominant role in the motor’s loss balance. That is why accurate determination of these losses is very important and cutting has a significant impact on them. This report shows how the method of cutting sheet metal affects losses in the finished induction motor working in a wide frequency range. The paper presents the impact of various motor core fabrication technologies on its operational parameters and an approximate way of including this impact in analytical calculations at the design stage of new machine designs, as it is necessary to use sheet metal cutting technologies such as laser or electrical discharge machining (EDM) at the prototype stage. The proposed method is based on measurements of sheet parameters made on toroidal samples with appropriately selected dimensions, so that the width of the sample corresponds to the average width of the motor core elements.

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Detailed Investigation of the Residual and Non-Symmetry Active and Reactive Power Flow for No-Neutral Three-Phase Nonlinear Circuits

Nemoianu

Paltanea

Păltânea

et al. 2023

2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

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Electric motors of large consumer products, challenges and trends from the perspective of power efficiency improvement through modern cutting technologies

Cited by 4 publications

References 12 publications

Impact of a Punching Process on the SyRM Iron Loss: SPICE Model as an Effective Tool for Iron Loss Modeling

Impact of a Punching Process on the SyRM Iron Loss: SPICE Model as an Effective Tool for Iron Loss Modeling

Impact of Core Sheet Cutting Method on Parameters of Induction Motors

Detailed Investigation of the Residual and Non-Symmetry Active and Reactive Power Flow for No-Neutral Three-Phase Nonlinear Circuits

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