AC magnetostriction hysteresis and magnetization direction in grain oriented silicon steel

Mogi, H.; Matsuo, Y.; Kumano, Tomoji

doi:10.1109/20.800525

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…where K represents the constant integrating those constants in (3). Equation (4) will be used for design of the transformer windings.…”

Section: A Short Circuit Condition In Transformer Windingsmentioning

confidence: 99%

“…Many power transformers suffer dramatic failures due to the lack of a suitable and sufficiently strong electromagnetic structure design [1]. A finite difference method (FDM) was proposed to analyze the variation in the flux density with respect to different lap-joint structures of silicon steel cores [2][3]. The measured results from the hysteresis loop of AC magnetostriction provided useful information [4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of Transformer With High-Permeability Ferromagnetic Core and Strengthened Windings for Short-Circuit Condition

Hsieh

Hsu

et al. 2015

IEEE Trans. Magn.

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This paper studies the design of 1 MVA three-phase oil-immersed distribution transformers considering short-circuit testing (SCT) and its impact on the windings. To maintain the transformer function after the SCT, only an impedance variation within 5% is allowed. Therefore, in conjunction with the particle swarm optimization (PSO), a simulation-based optimal approach is developed for design of the distribution transformers. Finite element analysis (FEA) is used to work with the PSO for calculation of flux densities, costs, core losses and magnetostriction variations for the transformers under a prescribed noise level. Three transformer prototypes are then built using two types of amorphous cores and a conventional silicon steel core, respectively. The performance after the SCT is evaluated for the prototypes constructed. From the test results, it is found that the amorphous core is suitable for transformers in terms of lower noise level, core loss and magnetostriction variation.Index Terms-Amorphous transformer, particle swarm optimization, finite element analysis, core loss, noise level 0018-9464 (c)

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“…where K represents the constant integrating those constants in (3). Equation (4) will be used for design of the transformer windings.…”

Section: A Short Circuit Condition In Transformer Windingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of Transformer With High-Permeability Ferromagnetic Core and Strengthened Windings for Short-Circuit Condition

Hsieh

Hsu

et al. 2015

IEEE Trans. Magn.

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show abstract

“…Magnetostriction arises from the movement and rotation of magnetic domain walls and varies nonlinearly with magnetic flux density in soft magnetic materials, such as GO silicon steel, amorphous soft magnetic alloys, and nanocrystalline soft magnetic alloys [11,12,13,14]. The GO silicon steel is mainly used for manufacturing the laminated core of large power transformers [15,16]. Vibration of the laminated core under some extreme excitations not only reduces the service life of the power transformer, but also threatens the safe operation of the power system, and the consequently generated tremendous noise should be reduced to prevent environmental pollution [17,18].…”

Section: Introductionmentioning

confidence: 99%

Magnetostrictive Properties of the Grain-Oriented Silicon Steel Sheet under DC-Biased and Multisinusoidal Magnetizations

Zhao

Liu

et al. 2019

Materials

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As an intrinsic property, elasticity of soft material is affected significantly by the externally applied alternating magnetic field. Magnetostrictive properties of the grain-oriented (GO) silicon steel under DC-biased and multisinusoidal magnetizations are measured by using a laser-based measuring system. Magnetostriction curves of the GO silicon steel sheet under different magnetizations are obtained and the influence of frequency and DC bias on the magnetostrictive property is observed and analyzed based on the measured data. In addition, the spectrum of magnetostriction under harmonic magnetization is obtained, and the acoustic noise level of the GO silicon steel sheet represented by the A-weighted decibel value caused by magnetostriction is measured under DC-biased and multisinusoidal magnetizations. The measurement results are applied to the simulation of the three-limb laminated core model, and the effects of DC bias and harmonics on magnetic flux density and displacement are analyzed.

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“…The higher harmonics of magnetostriction are more important than the fundamental harmonic when considering transformer noise [2]. The harmonics of magnetostriction under sinusosidal flux density have been usually analysed by fast Fourier transform (FFT) [3]- [5]. It is of great interest to find out the relationship between harmonics in flux density and in magnetostriction, especially under compressive stress, which is of crucial importance for the design and construction of electrical machines.…”

Section: Introductionmentioning

confidence: 99%

Magnetostriction and the Influence of Harmonics in Flux Density in Electrical Steel

et al. 2015

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Measurement of magnetostriction harmonics under stress is beneficial to clarify the raltionship between magnetostriction and transformer noise. In this study, a magntetostriction measuring system with small uncertainty is developed to measure the magnetostricion under stress of ± 20MPa. The magnetostriction under sinusoidal and nonsinusoidal flux densities can be measured by digital waveform control. The components of magnetostriction harmonics and specific power loss at different percentage of the 3rd harmonic in flux density and phase delay of the 3rd harmonic with respect to the fundamental harmonic are investigated.

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AC magnetostriction hysteresis and magnetization direction in grain oriented silicon steel

Cited by 9 publications

References 4 publications

Design of Transformer With High-Permeability Ferromagnetic Core and Strengthened Windings for Short-Circuit Condition

Design of Transformer With High-Permeability Ferromagnetic Core and Strengthened Windings for Short-Circuit Condition

Magnetostrictive Properties of the Grain-Oriented Silicon Steel Sheet under DC-Biased and Multisinusoidal Magnetizations

Magnetostriction and the Influence of Harmonics in Flux Density in Electrical Steel

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