Anisotropic properties of high permeability grain-oriented 3.25% Si-Fe electrical steel

“…The effective usage of the grainoriented material in power transformers usually constitutes an overall induction of around 1.7 T at power frequencies. The localized fluxes however could exceed 2.0 T [12]. This normally leads to a natural flux distribution; in the rolling direction.…”

Section: E Development Of Electronic Circuitrymentioning

confidence: 94%

Magnetic properties of grain-oriented and non-oriented silicon iron core arrangements

Jahidin

Ali

Mahadi

2011

2011 IEEE International Conference on System Engineering and Technology

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Electrical steel is a key material for power apparatus in electric home appliances, industrial machinery and transport equipment. Specifically, they are used as cores in transformers, generators and motors, efficiently converting magnetic energy into electricity. The magnetic properties of steel laminations need to be precisely estimated in order to design an accurate electrical machine. In this study, two types of magnetic materials, grain-oriented and non-oriented electrical steel were used. Measurements were performed for vertical and horizontal arrangements of one-dimensional magnetizing system at the frequency of 50 Hz. The magnetic properties were principally investigated by developing the magnetizing system, constructed by two laminated C-cores with copper winding in excitation mode. The most important quantities in characterizing the magnetic materials are the magnetic field strength, H, and magnetic flux density, B. Results obtained indicate that different core arrangement influences the detected field strength. The results also show that the magnetic properties of grain-oriented are better compared to non-oriented steel.

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“…Important intrinsic characteristics associated with the magnetic material, in terms of their anisotropic behaviour are not fully accounted for [7][8]. Also critical considerations in the geometry, regarding design features associated with corners and the T-joints.…”

Section: Vmentioning

confidence: 99%

Computation of rectifier transformers employed in railway networks

Shirkoohi

Jenkins

2017

2017 IEEE International Conference on Industrial Technology (ICIT)

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Abstract-Many rail transport providers operate and maintain a medium voltage distribution network providing power to trains, signalling equipment and stations. Transformers form an important part of the distribution network stepping voltage up and down. Rectifier transformers are used to provide DC for traction, usually stepping down from medium voltage levels. Mineral oil is essential for optimised performance of large transformers, providing the much needed cooling at high power operation and elevated core and winding temperatures. A representative rectifier transformer has been modelled for a realistic analysis of the 3D model constructed using exact manufacturer's data for the geometry and coil arrangements. The results are seen to be in good agreement with the actual tests carried out during the commissioning of the transformer.

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Anisotropic properties of high permeability grain-oriented 3.25% Si-Fe electrical steel

Cited by 27 publications

References 1 publication

Hysteresis modeling of the grain-oriented laminations with inclusion of crystalline and textured structure in a modified Jiles-Atherton model

Hysteresis modeling of the grain-oriented laminations with inclusion of crystalline and textured structure in a modified Jiles-Atherton model

Magnetic properties of grain-oriented and non-oriented silicon iron core arrangements

Computation of rectifier transformers employed in railway networks

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