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Magnetic saturation type three-phase controllable reactor

A saturable reactor technology, applied in the field of three-phase controllable reactors, can solve the problems of the average turn length of the working winding, the high total cost of copper and iron used in the reactor, and the large amount of iron core materials.

Inactive Publication Date: 2012-02-22
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that since the two main core columns are provided with small section sections, the structure is complex, the manufacturability is poor, and the cost is high.
Its disadvantages are that the control winding, energy-taking winding and working winding are placed concentrically, resulting in a larger average turn length of the working winding, a higher amount of copper, iron, and higher total cost of the reactor, and the working winding, control winding , the energy-taking winding and the main core column in a deeply saturated state generate heat intensively, and are prone to local overheating
[0003] The current three-phase controllable reactor mostly adopts the combination of multiple magnetic circuits. Both the magnetic valve type and the column magnetically saturated controllable reactor require more core columns, and the amount of core material is large.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] figure 1 It is a structural schematic diagram of Embodiment 1 of the present invention, figure 2 It is a structural side view of Embodiment 1 of the present invention. Such as figure 1 and figure 2 As shown, the magnetically saturated three-phase controllable reactor of the present invention includes six parts including three main core columns 1, three working windings 2, an upper yoke 3, an upper yoke control winding 4, a lower yoke 5, and a lower yoke control winding 6. . The main core column 1 is in the shape of a column with equal cross-section as a whole, and the cross-sectional shape is circular or rectangular. The main core column 1 is formed by stacking a plurality of core cakes with the same cross-sectional shape. There is an air gap between each core cake as a magnetic saturation type. The air gap of the three-phase controllable reactor. The upper yoke 3 and the lower yoke 5 are both E-shaped iron cores, and the three extending arms are respectively con...

Embodiment 2

[0021] figure 1 It is a schematic structural diagram of Embodiment 2 of the present invention, Figure 4 It is a side view of the structure of Embodiment 2 of the present invention. Such as figure 1 and Figure 4 As shown, the upper yoke 3 and the lower yoke 5 are both E-shaped iron cores, and the three extending arms are respectively connected to the upper and lower ends of the three main iron core columns 1 to form the main magnetic circuit of the reactor. The two waists of the upper yoke 3 and the lower yoke 5 respectively open a vertical through hole, and the winding wires of the upper yoke control winding 4 and the lower yoke control winding 6 respectively pass through the two through holes of the waist and are divided into two groups and wound on the upper yoke. Both sides of yoke 3 and lower yoke 5, such as Figure 4 shown. The invention changes the saturation degree of the upper yoke 3 and the lower yoke 5 by controlling the DC current of the upper yoke control wi...

Embodiment 3

[0023] Figure 5 It is a schematic structural diagram of Embodiment 3 of the present invention, Figure 6 It is a side view of the structure of Embodiment 3 of the present invention. Such as Figure 5 and Figure 6 As shown, the upper yoke 3 and the lower yoke 5 are cylindrical iron cores, and the sides are respectively connected with the upper and lower ends of the three main iron core columns 1 to form the main magnetic circuit of the magnetically saturated three-phase controllable reactor. Two horizontal rectangular holes are respectively opened in the middle of the upper yoke 3 and the lower yoke 5, and the winding wires of the upper yoke control winding 4 and the lower yoke control winding 6 respectively pass through the two rectangular holes and are wound on the upper yoke 3 and the lower yoke 5 on the outside, such as Figure 6 shown. The invention changes the saturation degree of the upper yoke 3 and the lower yoke 5 by adjusting the DC current of the upper yoke c...

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Abstract

The invention provides a magnetic saturation type three-phase controllable reactor, comprising three main iron core columns, three working windings, a top yoke, a top yoke control winding, a bottom yoke, a bottom yoke control winding and the like, wherein the whole body of each main iron core column is in a columnar shape with equal sections and the main iron core is formed by overlapping a plurality of iron core cakes with the same sectional shape; certain air gaps space are reserved among the iron core cakes and used as air gaps of the magnetic saturation type three-phase controllable reactor; upper and lower ends of the three main iron core columns are respectively connected with the top yoke and the bottom yoke; and the top yoke and the bottom yoke are respectively wound by the top yoke control winding and the bottom yoke control winding. According to the invention, by controlling direct currents of the top yoke control winding and the bottom yoke control winding to change the saturation degrees of the top yoke and the bottom yoke, the adjustment of a reactance value of the magnetic saturation type three-phase controllable reactor is further realized. The magnetic saturation type three-phase controllable reactor provided by the invention can be widely applied to a middle-high voltage level electric power system.

Description

technical field [0001] The invention relates to a reactor, in particular to a three-phase controllable reactor. Background technique [0002] At present, the magnetic regulation circuit type controllable reactor is divided into two types from the core structure: the magnetic valve type and the core column magnetic saturation type controllable reactor. Among them, the patents of magnetic valve type controllable reactors are: 95223137.9, etc.; the patents of core column magnetic saturation type controllable reactors are: 99250344.2, etc. Among them, the magnetic valve type is to change the reactance of the winding by controlling the magnetic saturation state of the small cross-section section provided on the iron core column, so as to achieve the purpose of changing the reactance value of the reactor. Its structural features are: the iron core is composed of two main iron core columns and corresponding iron yokes, and a small section section is provided on the two main iron c...

Claims

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Application Information

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IPC IPC(8): H01F21/02H01F21/08H01F27/28
Inventor 张国强郭润睿李康
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI