Magnetostriction of Transformer Core Steel Considering Rotational Magnetization

Shilyashki, Georgi; Pfützner, Helmut; Anger, Jan; Gramm, K.; Hofbauer, Franz; Galabov, Viktor; Mulasalihović, E.

doi:10.1109/tmag.2013.2283193

Cited by 30 publications

(16 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering unavoidable inaccuracy occurring in the transformer manufacturing process and allowing for wider temperature variations, the number of coil turns is increased by approximately 5-10% to avoid core saturation [27]:…”

Section: Transformermentioning

confidence: 99%

Lighting Control via Magnetic Field Communication

et al. 2019

View full text Add to dashboard Cite

This invention proposes a novel light emitting diode (LED) lighting (dimmable) control scheme to transmit digital data through a magnetic field generated by a flyback driver that utilizes digitized data to adjust the brightness of LEDs for potential applications. This design would eliminate the cost of establishing wireless transmission hardware by simply relying on the magnetic field for communication to meet the management of the lighting control system. The method used a frequency-shift keying (FSK) technique on the secondary side of the system to send digitized data to the primary side. The primary side of the system interpreted the control commands by detecting the frequency change, and the corresponding lighting control was decoded. The inner communication connected the primary and secondary sides to the transformer through wirelessly transmitted data, which eliminated the requirements of optical coupling and peripheral circuits. For extended applications, the designed system can be combined with sensors at home for lighting management with the benefits of energy saving and potential emergency warnings.

show abstract

Section: Transformermentioning

confidence: 99%

Lighting Control via Magnetic Field Communication

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The transformer vibration noise is mainly caused by the magnetostriction of the silicon steel sheets of the iron core [7,8]. Because the internal structure of the large transformer is complex, it is difficult to accurately analyze the generation and propagation process of the noise theoretically.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Vibration and Noise Characteristics of the Power Transformer

Lu¹,

Wang²,

Song³

et al. 2017

dtetr

View full text Add to dashboard Cite

Abstract. The power transformer noise has become increasingly serious. The accurate measurement of transformer noise is more and more important. In this paper, the 220kV power transformer is measured with both the sound potential method and the vibration method. The measurement environment and measurement method are introduced in detail. The frequency spectrum analyses of the transformer noise and the vibration results are carried out. The relationship between the transformer noise and the vibration is studied. The research results can provide data base for noise source identification and noise suppression of the transformer.

show abstract

“…On one hand, extensive measurements have been conducted to characterize the magnetostrictive behavior of different materials [1]- [3], and on the other hand, models of varying complexity have been developed to describe the observed magnetostrictive behavior [2]- [5]. Furthermore, incorporation of the developed models of magnetostriction into the simulation tools, mainly finite-element (FE) programs, of electrical machines and devices has been presented [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Anisotropic and Strain-Dependent Model of Magnetostriction in Electrical Steel Sheets

et al. 2015

View full text Add to dashboard Cite

This paper presents an anisotropic and mechanical strain-dependent model of magnetostriction in electrical steel sheets and its application in finite-element computations. The presented model is bidirectional and the data needed for its derivation is extracted solely from unidirectional measurements under mechanical loading. The model has six parameters that describe the magnetic and strain behavior and two parameters that describe the anisotropy. The validation of the model is carried out through measurements and computations on a single-phase transformer-like device. The comparison between computation and measurement results seems to be reasonable regardless of the fact that the magnetic behavior is modeled as single valued, isotropic, and anhysteretic. Original magnetostriction measurements are also presented and the importance of magnetostriction anisotropy in a priori isotropic electrical steel sheets is demonstrated. The model is easy to implement in existing codes and the anisotropic behavior is straightforward to modify according to a specific material.

show abstract

Magnetostriction of Transformer Core Steel Considering Rotational Magnetization

Cited by 30 publications

References 42 publications

Lighting Control via Magnetic Field Communication

Lighting Control via Magnetic Field Communication

Analysis of Vibration and Noise Characteristics of the Power Transformer

Anisotropic and Strain-Dependent Model of Magnetostriction in Electrical Steel Sheets

Contact Info

Product

Resources

About