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Winding type iron core and iron core reactor

A reactor and wound-type technology, applied in the direction of transformer/inductor core, transformer/inductor coil/winding/connection, etc., can solve the problems of three-phase magnetic circuit not being independent, generating noise, mutual interference, etc., to achieve Avoid axial electromotive force, reduce no-load loss, and reduce noise

Inactive Publication Date: 2014-08-20
刘林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: 1) The silicon steel sheet of the iron core undergoes magnetostriction under the action of the alternating magnetic field, which makes the iron core vibrate periodically with the change of the excitation frequency, thereby generating noise
2) The loss is large; 3) The traditional core column is a three-column structure, and the three-phase magnetic circuits are not independent and interfere with each other

Method used

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  • Winding type iron core and iron core reactor
  • Winding type iron core and iron core reactor
  • Winding type iron core and iron core reactor

Examples

Experimental program
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Embodiment Construction

[0029] like figure 1 As shown, the iron core 1 includes a ring structure wound by silicon steel strips 2 , the silicon steel strips 2 are fixed by spot welding 3 between layers, and six air gaps 4 are arranged symmetrically on the iron core 1 .

[0030] like figure 2 As shown, the horizontal section of the iron core 1 is a polygonal trapezoidal structure, the short side of which is outward, and the angle between the two hypotenuses is 120°.

[0031] like image 3 As shown, the hypotenuses of the three-phase iron core 1 are attached to each other, and a core column 6 is formed in the middle, and three cylindrical windings 5 ​​are respectively arranged at the far end of the iron core 1 .

[0032] like Figure 4 As shown, the dry-type wound iron core reactor also includes a fixing part 7 matching the shape of the three-phase iron core 1 to fix the three-phase iron core.

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PUM

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Abstract

The invention relates to a reactor, in particular to a winding type iron core for a reactor and an iron core reactor. The winding type iron core is characterized in that the iron core comprises an annular structure formed by winding a silicon strip, the layers of the silicon strip are fixed, one or more air gaps are formed in the iron core, the horizontal section of the iron core is of a polygonal trapezoid structure, the short edge of the iron core is outward, and the included angle between two bevel edges is 120 degrees; the bevel edges of three-phase iron cores are attached to one another, a core column is formed among the three-phase iron cores, and the iron core reactor is formed. Compared with the prior art, noise is low, loss is low, three-phase magnetic circuits are independent, and mutual interference is avoided.

Description

technical field [0001] The invention relates to a reactor, in particular to a wound iron core and an iron core reactor. Background technique [0002] Reactor is one of the main electrical equipment of power transmission and transformation system. With the development of power system to high voltage, large capacity and long-distance transmission, reactors are used more and more in the system. [0003] According to the different core structures of reactors, there are commonly used in the industry: air core reactors and iron core reactors, among which, iron core reactors are divided into dry type iron core reactors and oil immersed iron core reactors, iron core reactors The iron core of the device consists of a stem with an air gap, and a winding is placed outside the stem. In the prior art, the core column is composed of a plurality of stacked silicon steel sheets, and there is an air gap between the silicon steel sheets. Its disadvantages are: 1) The silicon steel sheet of ...

Claims

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Application Information

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IPC IPC(8): H01F27/26H01F27/25H01F27/30
Inventor 刘林
Owner 刘林