Estimation of power losses in dynamo steel sheets during axial magnetization

2015 ◽  
Vol 1 (12) ◽  
pp. 278-282 ◽  
Author(s):  
Agnieszka BANACH
Keyword(s):  
Power Losses ◽  
Steel Sheets ◽  
Dynamo Steel

scholarly journals Calculations of magnetic field in dynamo sheets taking into account their texture

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 1034-1038
Author(s):  
Witold Mazgaj ◽  
Zbigniew Szular ◽  
Paweł Szczurek
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Measurements ◽  
Iron Particles ◽  
Easy Magnetization ◽  
Anisotropic Properties ◽  
Steel Sheets ◽  
The Given ◽  
Dynamo Steel ◽  
Magnetization Processes

Abstract Magnetic measurements have shown that the most dynamo steel sheets have certain anisotropic properties, which are due to the presence of textures in these sheets. These anisotropic properties have been taken into account usually in a simplified way assuming that iron particles of the dynamo sheets have only one axis of the easy magnetization. In the proposed approach, these particles are treated as grains which have three axes of the easy magnetization, and therefore the magnetization processes can be considered along each of these axes. These processes depend on the actual value and on the direction of the field strength and also on textures occurring in the given dynamo sheet. A method which allows calculations of the field distribution as a function of the assumed changes of external currents is described in this paper.

scholarly journals An Overview of Non-Destructive Testing of Goss Texture in Grain-Oriented Magnetic Steels

Mathematics ◽  
2021 ◽  
Vol 9 (13) ◽  
pp. 1539
Author(s):  
Antonio Faba ◽  
Simone Quondam Antonio
Keyword(s):  
Non Destructive Testing ◽  
Power Losses ◽  
Destructive Testing ◽  
Goss Texture ◽  
Steel Sheets ◽  
The Past ◽  
Research Areas ◽  
Non Destructive ◽  
Ferromagnetic Steel ◽  
Suitable Process

Grain oriented steels are widely used for electrical machines and components, such as transformers and reactors, due to their high magnetic permeability and low power losses. These outstanding properties are due to the crystalline structure known as Goss texture, obtained by a suitable process that is well-known and in widespread use among industrial producers of ferromagnetic steel sheets. One of the most interesting research areas in this field has been the development of non-destructive methods for the quality assessment of Goss texture. In particular, the study of techniques that can be implemented in industrial processes is very interesting. Here, we provide an overview of techniques developed in the past, novel approaches recently introduced, and new perspectives. The reliability and accuracy of several methods and equipment are presented and discussed.

scholarly journals Influence of magnetic anisotropy on flux density changes in dynamo steel sheets

2015 ◽  
Vol 64 (1) ◽  
pp. 81-88
Author(s):  
Witold Mazgaj ◽  
Zbigniew Szular ◽  
Adam Warzecha
Keyword(s):  
Magnetic Anisotropy ◽  
Flux Density ◽  
Magnetic Measurements ◽  
Magnetic Flux Density ◽  
Anisotropic Properties ◽  
Steel Sheets ◽  
Rotational Magnetic Field ◽  
Grain Distribution ◽  
The Given ◽  
Dynamo Steel

Abstract Magnetic measurements, carried out by means of the Epstein frame, have shown that most typical dynamo steel sheets have certain anisotropic properties. In numerical analysis, anisotropic properties are taken into account with the use of the special function of the grain distribution in the given dynamo sheet. For engineering purposes, it is desirable to assess the influence of these properties on the changes of the magnetic flux density in typical dynamo steel sheets, especially during the rotational magnetization. For this purpose, measurements of the flux density changes and field strength changes in the circular-shaped samples of two selected typical dynamo sheets were performed. These measurements were carried out for several values of the current flowing in windings which generated the axial or rotational magnetic field in the test dynamo sheet. The influence of the magnetic anisotropy on the magnetization process was briefly discussed for both types of the magnetization processes.

Textures of dynamo steel sheets

2017 ◽  
Author(s):  
Agnieszka Banach ◽  
Witold Mazgaj ◽  
Zbigniew Szular ◽  
Pawel Szczurek ◽  
Janusz Zelechowski
Keyword(s):  
Steel Sheets ◽  
Dynamo Steel
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