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An Improved Multifunctional Transformer

A transformer, multi-functional technology, applied in transformer/inductor coil/winding/connection, conversion of AC power input to AC power output, conversion equipment that can be converted to DC without intermediate conversion, etc., can solve the saturable reactor module. The performance is not good enough to achieve the effect of simple structure, improved performance and improved effect

Inactive Publication Date: 2017-09-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN201410461882.1, CN 201510010431.0 propose a multifunctional transformer, but the performance of the saturable reactor module is not good enough, and the structure can be improved

Method used

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  • An Improved Multifunctional Transformer
  • An Improved Multifunctional Transformer
  • An Improved Multifunctional Transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The structure and connection method of the multifunctional transformer proposed by CN 201510010431.0 are as follows: figure 1 shown. One of the iron core columns has AC coil L11, AC coil L13, AC coil L15, DC coil L17 and DC coil L19, and the other iron core column has AC coil L12, AC coil L14, AC coil L16, DC coil L18 and DC coil L20. There are four DC coils in total, and the turns of the four DC coils are relatively large. Therefore, the four DC coils can be improved to simplify the structure.

[0036] The structure and connection method of the first improved multifunctional transformer are as follows: figure 2 shown. Including primary coil terminal I1, primary coil terminal II2, secondary coil terminal I3, secondary coil terminal II4, closed-loop iron core 5, and control circuit 6. The closed-loop iron core of the first improved multifunctional transformer is the same as that of the existing saturated reactor. The first improved multifunctional transformer clos...

Embodiment 2

[0051] figure 1 The multifunction transformer shown is compatible with figure 2 The transient response time of the shown multifunctional transformer is relatively long. This embodiment provides a multifunctional transformer with shorter transient response time.

[0052] The structure and connection method of the second improved multifunctional transformer are as follows: image 3 shown. Including primary coil terminal I1, primary coil terminal II2, secondary coil terminal I3, secondary coil terminal II4, closed-loop iron core 5, and control circuit 6. The closed-loop iron core of the second improved multifunctional transformer is the same as that of Embodiment 1, so it is no longer redundant.

[0053] One of the iron core columns has AC coil L11, AC coil L13, AC coil L15, DC coil L21 and DC coil L23, and the other iron core column has AC coil L12, AC coil L14, AC coil L16, DC coil L22 and DC coil L24; the number of turns of AC coil L11, AC coil L12, AC coil L13, and AC c...

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Abstract

An improved multifunctional transformer. The transformer comprises a saturable reactor and a transformer which are mounted on the same closed-loop iron core (5), wherein the saturable reactor comprises direct-current coils (L23, L24) being provided on two iron core columns respectively, and each of the direct-current coils (L23, L24) being provided with a tap; dotted terminals of the two direct-current coils (L23, L24) are connected, the tap of the first direct-current coil (L23) is connected to a non-dotted terminal of the second direct current coil (L24) via a first forward thyristor (D1), and a non-dotted end of the first direct-current coil (L23) is connected to the tap of the second direct-current coil (L24) via a second forward thyristor (D2);the control ends of the two thyristors (D1, D2) are connected to a control circuit (6), and the control circuit (6) controls the sizes of triggering angles of the two thyristors (D1, D2); and the sizes of direct-currents of the two direct current coils (L23, L24) are continuously adjusted, thereby realizing continuous adjustment of a reactance value of the saturable reactor.

Description

technical field [0001] The invention relates to the technical field of electric power transmission and transformation, in particular to an improved multifunctional transformer. Background technique [0002] Power transformers are widely used in power systems. Power transformers can convert high voltage to low voltage and low voltage to high voltage. [0003] Reactors are also widely used in power systems. The controllable saturable reactor whose reactance value can be continuously adjusted is referred to as a saturable reactor or a magnetron reactor. [0004] So far, power transformers and saturable reactors have been researched and manufactured separately. If a substation needs both the power transformer and the saturable reactor, the total volume of the equipment is large, the iron core is heavy, the price is high, and the occupied area is large. [0005] Because "no matter how much the saturation of the transformer core changes, the change of the leakage reactance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/10H02P13/00H01F27/28
CPCH01F27/28H02M5/10H02P13/00
Inventor 李晓明
Owner SHANDONG UNIV
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