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Electrically controlled magnet core and preparing method thereof

A magnetic core and electronic control technology, applied in the direction of magnetic core/yoke, circuit, inductor, etc., can solve the problems of reduced life, increased energy consumption, and difficult precise control, etc., to achieve high magnetic permeability and conductance High efficiency, good temperature resistance, smooth size effect

Active Publication Date: 2017-05-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of its adjustment are: ①The adjustment method is very mechanical: the adjustment of the magnetic flux is at the cost of changing its structure, or at the cost of sacrificing some characteristics in the electromagnetic circuit; ②Constrained by other electrical quantities, The adjustment range is limited, and the adjustment of the magnetic resistance is segmented adjustment, which cannot be adjusted smoothly according to the actual working conditions in real time; ③The adjustment method is very cumbersome: when designing and applying these adjustment methods to adjust the magnetic flux, it is necessary to carry out a comparative study in the early stage. Accurate calculation and analysis, which makes the design and application not so convenient; ④The application has limitations: for example, the magnetic flux of the permanent magnet cannot be adjusted by adjusting the excitation current i, or some mechanical equipment applications The magnetic flux controls its working conditions. At this time, the above-mentioned adjustment methods are very cumbersome to apply, and it is difficult to achieve more precise control.
[0005] Therefore, when the way of adjusting the magnetic flux is restricted, or the traditional means of adjusting the magnetic flux cannot well adjust the magnetic flux of the magnetic core that needs to be adjusted, if the traditional adjustment method is used forcibly, it will not only reduce the work efficiency of the entire electromagnetic device, but also reduce the efficiency of the entire electromagnetic device. Increase energy consumption and reduce lifespan

Method used

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  • Electrically controlled magnet core and preparing method thereof
  • Electrically controlled magnet core and preparing method thereof
  • Electrically controlled magnet core and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 2 As shown, the soft magnetic material iron-based nanocrystalline Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9, the relative magnetic permeability is 100000 when it is not saturated, and the iron-based nanocrystals are plated on the resin plate in a twisted shape by electroplating to form a basic unit 1 of the magnetic circuit. One end of the basic unit 1 of the magnetic circuit is connected to the external magnetic circuit. One end of the core of the element that changes the magnetic flux, the other end of the basic unit 1 of the magnetic circuit is connected to the other end of the core of the element that needs to change the magnetic flux of the external magnetic circuit; in the basic unit 1 of the magnetic circuit, a plurality of Conductive materials, and then these conductive materials are connected in parallel to an external circuit to form the basic unit 2 of the circuit. When the component is connected to the external magnetic core, the magnetic core and t...

Embodiment 2

[0044] Such as image 3 As shown, the soft magnetic material iron-based nanocrystalline thin ribbon Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 , the relative magnetic permeability is 100000 when it is not saturated, and it is wound into a multilayer hollow cylinder to form the basic unit 1 of the magnetic circuit; multiple turns of wire are wound between two adjacent layers of thin strips to form the reference magnetic flux generating unit 12, for example: a total of 100 layers of thin strips can be wound between 50 and 51 layers of thin strips with multiple turns of insulated wires; a positive potential is applied to the inner surface of the basic unit 1 of the magnetic circuit, and the outer surface is grounded. The specific method is to lead two A strip of conductive material is connected to an external circuit to form a basic circuit unit 2 . When the element is working, its upper and lower surfaces form a physical connection with the element that needs to change the magnetic flux...

Embodiment 3

[0046] Such as Figure 4 As shown, the soft magnetic material iron-based nanocrystalline Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 , the relative magnetic permeability is 100000 when it is not saturated, and the four-stage motor stator is made according to the motor stator manufacturing process to form the basic unit 1 of the magnetic circuit; a positive potential is applied to the inner surface of the basic unit 1 of the magnetic circuit, and the outer surface is grounded. The specific method That is to lead out two conductive materials from the two surfaces to connect to an external circuit to form the basic circuit unit 2 . When the motor is working normally, there is magnetic flux flowing in the basic unit 1 of the magnetic circuit. The size of the magnetic flux flowing in the basic unit 1 of the circuit can realize the smooth adjustment of parameters such as motor potential and slip. The number of pole pairs of the above-mentioned motor, the size of the motor, and the size of t...

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Abstract

The invention discloses an electrically controlled magnet core and a preparing method thereof. The electrically controlled magnet core comprises a magnetic circuit basic unit and an electric circuit basic unit; the magnetic circuit basic unit is connected to an outer magnet core to conduct magnetic conduction, or is matched with an outer instrument in circulation to induce magnetic flux; the electric circuit basic unit comprises an N-pole conducting material arranged on a magnetic flow path of the magnetic circuit basic unit in a perpendicular or crossing mode, and the N-pole conducting material is connected to adjustable power source two poles; electric current flowing through the conducting material can flow through the magnetic circuit basic unit, or electric potential of the conducting material can be applied to the magnetic circuit basic unit; N is a positive integer which is larger than or equal to 1. According to the electrically controlled magnet core and the preparing method thereof, the electric circuit basic unit is arranged on the magnetic circuit basic unit prepared from soft magnetic materials, electric current flowing through the electric circuit basic unit can flow through the magnetic circuit basic unit, or the electric potential can be applied to the magnetic circuit basic unit; the slide control over the magnetic flow in the magnetic circuit basic unit can be achieved by adjusting electric current or voltage of the electric circuit basic unit.

Description

technical field [0001] The invention relates to the technical field of electromagnetic equipment, in particular to an electronically controlled magnetic core and a preparation method thereof. Background technique [0002] Electromagnetic equipment is widely used in industry, transportation, military, aerospace, etc., and penetrates into various fields of the national economy. The adjustment of magnetic flux directly affects the application range of the equipment. Enlarging the adjustable range of the magnetic flux and the flexible adjustment of the magnetic flux size are of great benefit to the application of the entire electromagnetic device. [0003] There are generally two existing means for adjusting the magnetic flux. One is to change the magnetomotive force by adjusting the magnitude of the current in the circuit that generates the magnetomotive force or the number of turns of the conductor that is linked to the magnetic core, thereby changing the magnetic flux. The s...

Claims

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Application Information

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IPC IPC(8): H01F3/14H01F29/14
CPCH01F3/14H01F29/146
Inventor 娄建勇唐凌翔杨旭雷李星宇姜文宇
Owner XI AN JIAOTONG UNIV
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