Magnetic and Mechanical Properties of Newly Developed High-Strength Nonoriented Electrical Steel

Tanaka, Ichiro; Yashiki, Hiroyoshi

doi:10.1109/tmag.2009.2033457

Cited by 30 publications

(16 citation statements)

References 4 publications

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“…Such motors require the bridge to be kept as small as possible to limit shortcircuiting the magnet-flux (thus reducing magnet volume), however this is limited by the yield-strength of the lamination material. High yield strengths of over 800MPa can be achieved by a number of techniques such as dislocation strengthening [9], at the cost of increased iron losses. The HXT grades [10], shown in Fig.11, can achieve a very high yield strength, comparable to high-strength carbon steel, in excess of 800MPa with an elongation in excess of 18%.…”

Section: A Electrical Steelsmentioning

confidence: 99%

High-Speed Electrical Machines: Technologies, Trends, and Developments

Gerada

Mebarki

Brown

et al. 2014

IEEE Trans. Ind. Electron.

782

256

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.ukAbstract-This paper reviews the current technologies used in high speed electrical machines, through an extensive survey of different topologies developed and built in industry as well as in academia for several applications. Developments in materials and components including electrical steels and copper alloys are discussed, and their impact on the machines' operating physical boundaries is investigated. The main application areas pulling the development of high speed machines are also reviewed in an effort to better understand the typical performance requirements.Index Terms-high speed electrical machines, high frequency electrical machines, high strength electrical steels, high frequency electrical steels, copper alloys, thermal modeling, mechanical modeling.

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Section: A Electrical Steelsmentioning

confidence: 99%

High-Speed Electrical Machines: Technologies, Trends, and Developments

Gerada

Mebarki

Brown

et al. 2014

IEEE Trans. Ind. Electron.

782

256

View full text Add to dashboard Cite

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“…The bridge should be designed to be as small as possible in order to not compromise the magnetic flux distribution. Techniques have been adopted to reach these aims [15].…”

Section: Figurementioning

confidence: 99%

Challenges of the Optimization of a High-Speed Induction Machine for Naval Applications

et al. 2019

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In several industrial sectors, induction machines are being replaced with permanent magnet based alternatives, owing to the potential for higher power density and efficiency. However, high-speed applications feature a wide flux-weakening region, where advanced induction machines could bring benefits in terms of system-level optimization. This paper gives an overview the technological challenges for high-speed drives with induction machines, materials, simulations and future challenges for the power electronics in these applications. The target application is a high-speed induction machine for a naval turbocharging system. The comparison with permanent magnet synchronous machines will demonstrate how the extended flux weakening operation effectively allows for a weight reduction of the overall system.

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“…Nonoriented electrotechnical steel sheets are used for stators of engines and small transformers. The use of steel sheets with little losses in iron is an effective way how to reduce energetic losses in the engine [6,7]. So called High-efficiency electrotechnical non-oriented steel sheets are widely used for stators of highly effective engines (e.g.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cutting on the Properties of Clippings From Electrical Sheets

Spišák¹,

Majerníková²,

Kaščák³

et al. 2015

Acta Metall Slovaca

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During cutting, there is a plastic deformation in the cutting area and subsequent hardening of material occurs in this area. The hardening of material in the cutting area causes a change in its mechanical properties, which also has an impact on the physical properties of the material. The hardening manifests as an increase in strength, hardness and yield strength and reduction in the elongation and impact strength. The hardened area increases "watts losses" and reduces the magnetic induction in iron. The electrical resistance increases, which is related with failures in the atomic lattice. The degradation of the electrical conductivity can be explained by the fact that any defect resulting in cold forming causes a dispersion of electron waves. The magnetic properties of iron depend on the distribution of the magnetic field in the crystallographic structure. Violation of the crystallographic structure by forming destroys the magnetic field distribution. The magnetic properties get worse. In the end it causes a reduction in the efficiency of electric machines. The paper analyses the influence of cutting on microhardness in the cutting area.

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Magnetic and Mechanical Properties of Newly Developed High-Strength Nonoriented Electrical Steel

Cited by 30 publications

References 4 publications

High-Speed Electrical Machines: Technologies, Trends, and Developments

High-Speed Electrical Machines: Technologies, Trends, and Developments

Challenges of the Optimization of a High-Speed Induction Machine for Naval Applications

Influence of Cutting on the Properties of Clippings From Electrical Sheets

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