Temperature and stress effect measuring device for vector magnetic properties of an electrical steel sheet

Abstract

The invention relates to a temperature and stress effect measuring device for vector magnetic properties of an electrical steel sheet. The measuring device comprises an excitation magnetic circuit module, a temperature loading module, a stress loading module, a signal detection module and support modules. The excitation magnetic circuit module employs dual U-shaped magnet yokes and is arranged between the support modules. A tested sample piece having a cross-shaped is inserted into the two magnet yokes. The temperature loading module selecting a ceramic heating piece is installed in a small groove of a lower carrying plate and is in contact with a tested electrical steel sheet. The stress loading module employs an electric push rod device to stretch or compress the sample piece. The signal detection module carries out B signal measurement by using a probe method and carries out H signal measurement by using a dual-H wire coil method. The support modules are formed by a main structural support module and a stress loading structure support module. With the measuring device provided by the invention, measurement of a vector magnetic property of an electrical steel sheet is realized under a coupling effect of the temperature and the stress for the first time; and the dimension of measurement data of magnetic characteristic of the electrical steel sheet is extended.

Description

technical field [0001] The invention mainly relates to the field of measuring the magnetic properties of electrical steel sheets, in particular to a device for measuring the vector magnetic properties of electrical steel sheets under the coupled action of temperature and stress. Background technique [0002] Electrical steel sheets are widely used in electrical equipment such as motors and transformers to form magnetic conduction paths. The magnetic properties of electrical steel sheets have the characteristics of hysteresis, eddy current, nonlinearity and anisotropy, and depend on temperature and stress. When solving the multi-physics field coupling problem containing electrical steel sheet materials, the magnetic property data under the influence of multi-physics factors such as temperature and stress must be used. Therefore, this patent relates to a measuring device capable of measuring the vector magnetic properties of electrical steel sheets under the combined action o...

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Problems solved by technology

[0011] Purpose of the invention: The present invention provides a device capable of measuring the vector magnetic properties of electrical steel sheets under different temperatures and different stresses, and its purpose is to solve the problem that existing devices cannot measure the vector magnetic properties of electrical steel sheets under the coupling of temperature and stress Defects

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