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A Representation Method of Magnetic Permeability Tensor of Non-oriented Silicon Steel Sheet Core under Saturation Condition

A technology of oriented silicon steel and magnetic permeability, applied in the field of magnetic permeability representation of silicon steel sheet core, can solve problems such as difficult to solve nonlinear control equations effectively, and achieve the effect of linearization and simplification, reducing time and labor cost.

Active Publication Date: 2019-03-22
NANJING INST OF TECH
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  • Description
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Problems solved by technology

However, if you choose to use the analytical method for field analysis, unless there are special circumstances, it is generally difficult to achieve an effective solution to the nonlinear governing equations

Method used

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  • A Representation Method of Magnetic Permeability Tensor of Non-oriented Silicon Steel Sheet Core under Saturation Condition
  • A Representation Method of Magnetic Permeability Tensor of Non-oriented Silicon Steel Sheet Core under Saturation Condition
  • A Representation Method of Magnetic Permeability Tensor of Non-oriented Silicon Steel Sheet Core under Saturation Condition

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Embodiment Construction

[0029] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of this patent can be more easily understood by those skilled in the art, so that the protection scope of the present invention can be defined more clearly.

[0030] The invention discloses a non-oriented silicon steel sheet lamination core magnetic permeability tensor expression method under saturation conditions, which considers the anisotropy of the core magnetic properties introduced by the lamination structure, and simultaneously takes into account the magnetic saturation effect in the lamination core , the established permeability tensor model of the laminated core is close to the actual magnetization process of the laminated core.

[0031] The method of expressing the magnetic permeability tensor of non-oriented silicon steel sheet laminated core under saturation condition, such as figure 1 ,include:

[003...

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Abstract

The invention provides a non-oriented silicon steel plate iron core magnetic permeability tensor expressing method under saturation conditions; the method comprises the following steps: using iterative computation to determine the equivalent average magnetic permeability (see description) specific value through a computing model; considering magnetic property anisotropy introduced by a lamination structure, and building a magnetic permeability tensor expression. The lamination iron core anisotropy magnetic property is considered, and the equivalent average magnetic permeability component considering the ferromagnetic material saturation effect is introduced in the tensor magnetic permeability, so the built magnetic permeability tensor model can comply with the non-oriented silicon steel plate iron core real magnetization process; a real non-linear electromagnetic field equation is simplified as a linear equation, thus reducing time and labor cost needed in computing in certain level, and providing an effective scheme for performance prediction and optimization design high efficiency enforcement of electrical equipment like a motor and a transformer.

Description

technical field [0001] The invention relates to a method for expressing the magnetic permeability of a silicon steel sheet iron core, in particular to a method for expressing the magnetic permeability tensor of a non-oriented silicon steel sheet iron core under saturation conditions. Background technique [0002] Non-oriented silicon steel sheet core is the basic component of electrical equipment such as various types of motors and small transformers, and is formed into a laminated core by stacking or coiling process, which is mainly used to build magnetic circuits and install skeletons, and is used in various electrical equipment Occupies the largest volume and weight ratio. When performing performance prediction and optimal design of electrical equipment such as motors and transformers, it is necessary to use an effective mathematical model of the electromagnetic characteristics of the laminated core, especially the magnetic permeability model, and calculate the electromag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11G06F17/50
CPCG06F17/11G06F30/367
Inventor 王坚李宏胜蒋春容
Owner NANJING INST OF TECH
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