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Alternating-current saturation reactor

A technology of reactor and AC voltage, applied in transformer/inductor magnetic core, continuously variable inductor/transformer, AC power input conversion to AC power output, etc., can solve the problem of large volume, high price, heavy core And other issues

Inactive Publication Date: 2014-08-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the requirements of the AC magnetic flux and DC magnetic flux path, the existing single-phase DC saturable reactor main closed-loop iron core adopts the form of four iron core columns mutually closed loop, and the three-phase DC saturated reactor main closed-loop iron core adopts six The iron core columns are mutually closed-loop, with large volume, heavy iron core and high price

Method used

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Embodiment 1

[0063] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0064] The structure and connection method of an AC saturated reactor are as follows: figure 1 shown. The AC saturated reactor includes AC saturated reactor terminal I1, AC saturated reactor terminal II2, AC saturated reactor terminal III3, closed-loop core AC coil L1, and AC saturated reactor regulator 4. The closed-loop iron core AC coil L1 is connected between the terminal I1 and the terminal II2, and the AC saturable reactor regulator 4 is connected between the terminal II2 and the terminal III3. The closed-loop core AC coil L1 includes a closed-loop core on which the AC coil L1 is wound.

[0065] The AC saturated reactor regulator 4 is a voltage dividing and regulating device, when the AC saturated reactor regulator 4 control circuit does not work, the AC saturated reactor regulator 4 obtains the rated voltage of the AC saturated reactor regulato...

Embodiment 2

[0081] When the power system voltage fluctuates greatly, the current fluctuation of the AC saturated reactor described in Embodiment 1 is also relatively large. This embodiment provides an AC saturated reactor, which can reduce current fluctuations caused by voltage fluctuations.

[0082]An AC saturable reactor which includes terminal I1, terminal II2, terminal III3, closed-loop iron core AC coil L1, linear reactor, and AC saturated reactor regulator 4; after the closed-loop iron core AC coil L1 is connected in series with the linear reactor, it is connected to Between the terminal I1 and the terminal II2, the AC saturated reactor regulator 4 is connected between the terminal II2 and the terminal III3; the closed-loop core AC coil L1 includes a closed-loop core, and the AC coil L1 is wound on the closed-loop core; the AC saturated reactor The regulator 4 is a voltage dividing and regulating device. When the AC saturated reactor regulator 4 control circuit does not work, the AC...

Embodiment 3

[0094] The withstand voltage of the power electronic device in the first AC saturated reactor regulator 4 should be greater than U2, and the higher the withstand voltage of the power electronic device, the more expensive it is. The second type of AC saturable reactor regulator 4 can reduce the withstand voltage requirements of power electronic devices.

[0095] The structure and connection method of the second AC saturable reactor regulator 4 are as follows: image 3 shown. The second AC saturable reactor regulator 4 will be further described below with reference to the drawings and embodiments.

[0096] The second AC saturated reactor regulator 4 includes a voltage divider transformer, and the two ends of the primary coil L3 of the voltage divider transformer are two terminals of the second AC saturated reactor regulator 4; the secondary coil L4 of the voltage divider transformer is connected in parallel with the AC voltage and The current controller 5, the piezoresistor R1...

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Abstract

The invention relates to an alternating-current saturation reactor. According to the alternating-current saturation reactor, direct current is not needed, the size is small, and the cost is low. The alternating-current saturation reactor comprises a terminal I, a terminal II, a terminal III, a closed loop iron core alternating-current coil L1 and an alternating-current saturation reactor regulator, wherein the closed loop iron core alternating-current coil L1 is connected between the terminal I and the terminal II, the alternating-current saturation reactor regulator is connected between the terminal II and the terminal III, and the alternating-current saturation reactor regulator is a voltage distribution and regulation device; when an alternating-current saturation reactor regulator control circuit does not work, the nominal voltage of the alternating-current saturation reactor regulator is obtained; when the alternating-current saturation reactor regulator control circuit works, the control circuit regulates and controls the voltages across the two ends of the alternating-current saturation reactor regulator to be lower than the nominal voltage; regulation of the reactance of the alternating-current saturation reactor regulator is achieved by regulating the alternating voltages across the two ends of the alternating-current saturation reactor regulator.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation in power systems, in particular to an AC saturated reactor. Background technique [0002] Reactors are widely used in power systems. The series reactor can limit the short-circuit current; the shunt reactor can limit the overvoltage; the combination of the reactor and the capacitor can form a filter circuit. In some application fields, the reactance value of the reactor is fixed; in some application fields, the reactance value of the reactor should be adjusted continuously with the change of the power system operation mode. The controllable saturable reactor (abbreviated as: saturable reactor) whose reactance value can be adjusted continuously is an important research topic. [0003] The saturable reactor uses the saturation characteristics of the closed-loop iron core of the saturable reactor to change the reactance value of the reactor. Many saturable reactors ha...

Claims

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Application Information

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IPC IPC(8): H01F21/02H01F27/24H01F27/28H02P13/00
Inventor 李晓明
Owner SHANDONG UNIV
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