CN117476330A - Magnetic control transformer - Google Patents
Magnetic control transformer Download PDFInfo
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- CN117476330A CN117476330A CN202311595243.XA CN202311595243A CN117476330A CN 117476330 A CN117476330 A CN 117476330A CN 202311595243 A CN202311595243 A CN 202311595243A CN 117476330 A CN117476330 A CN 117476330A
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- iron core
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- 238000004804 winding Methods 0.000 claims abstract description 204
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 106
- 230000005284 excitation Effects 0.000 claims abstract description 70
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000002086 nanomaterial Substances 0.000 claims abstract description 19
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003878 thermal aging Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The application discloses magnetic control transformer, including three annular iron core of rectangle, three primary side alternating current winding, three secondary side alternating current winding and six direct current excitation winding, the first limit of every iron core and all connect a direct current excitation winding with the second limit, the second limit of every iron core is the opposite side of the first limit of this iron core, every direct current excitation winding includes yoke and coil, the yoke on every direct current excitation winding adopts amorphous nanomaterial, the third limit and the fourth side of every iron core all twine have primary side alternating current winding and secondary side alternating current winding, the third limit of every iron core is the opposite side of the fourth side of this iron core. Therefore, as the amorphous nano material is more saturated than the silicon steel sheet 30Q130, the amorphous nano material is adopted as the material of the iron yoke where the direct-current excitation winding is positioned, the number of turns of the direct-current excitation winding can be reduced, so that the direct-current of the direct-current excitation winding is reduced, and the winding loss on the direct-current winding is reduced.
Description
Technical Field
The application relates to the technical field of transformers, in particular to a magnetic control transformer.
Background
Along with the increasing demand of electric quantity, more and more new energy sources are integrated into a power grid, the high-proportion distributed new energy sources have the characteristic of large-amplitude random fluctuation, large-scale grid connection can lead to large voltage fluctuation of the power grid and difficult control, and the traditional reactive voltage regulation equipment cannot meet the rapid continuous smooth regulation demand.
The transformer is used as important power system power transformation and distribution equipment, wherein the magnetic control transformer can realize the voltage transformation function of a conventional transformer, can also play the roles of reactive compensation, current limiting and improving the power factor of the frequency converter, has the advantages of compactness and multifunction, and has remarkable effects of realizing high-efficiency control of reactive voltage, unbalance management and the like.
The magnetic control transformer consists of a winding and an iron core, wherein the winding is a copper wire, the iron core is made of silicon steel sheets, and the magnetic control transformer has the advantage of small eddy current loss. However, winding loss and core loss are inevitably and continuously generated in the operation of the magnetic control transformer, heat accumulation is caused by the loss, equipment thermal ageing is aggravated due to improper heat dissipation treatment, and normal and stable operation of the equipment is threatened. When the magnetic control transformer works in the reactive compensation mode, direct current excitation is conducted into the direct current winding, and larger winding loss can be generated.
How to optimize the magnetic control transformer, reduce the winding loss on the direct current winding, slow down the equipment thermal aging aggravation to keep the normal steady operation of equipment, be the problem that needs attention.
Disclosure of Invention
In view of the above problems, the present application provides a magnetically controlled transformer, so as to reduce winding loss on a dc winding, slow down thermal aging aggravation of equipment, and maintain normal and stable operation of the equipment.
In order to achieve the above object, the following specific solutions are proposed:
a magnetic control transformer comprises three rectangular annular iron cores, three primary side alternating current windings, three secondary side alternating current windings and six direct current excitation windings;
the first side and the second side of each iron core are respectively connected with a direct current excitation winding, and the second side of each iron core is the opposite side of the first side of the iron core;
each direct current excitation winding comprises an iron yoke and a coil;
an iron yoke on each direct current excitation winding adopts amorphous nano materials;
the third side and the fourth side of each iron core are respectively wound with a primary side alternating current winding and a secondary side alternating current winding, and the third side of each iron core is the opposite side of the fourth side of the iron core.
Optionally, the number of turns of the coil of each direct current excitation winding is smaller than the target number of turns of the coil of the direct current excitation winding, and when the target number of turns of the coil of each direct current excitation winding is 30Q130 of silicon steel sheet as the iron yoke material of the direct current excitation winding.
Optionally, each direct current excitation winding is provided with a magnetic valve.
Optionally, the three rectangular annular iron cores include a first iron core, a second iron core and a third iron core, the three primary ac windings include a first primary ac winding, a second primary ac winding and a third primary ac winding, and the three secondary ac windings include a first secondary ac winding, a second secondary ac winding and a third secondary ac winding;
the first primary side alternating current winding and the first secondary side alternating current winding are both wound on a third side of the first iron core and a fourth side of the second iron core;
the second primary side alternating current winding and the second secondary side alternating current winding are both wound on a third side of the second iron core and a fourth side of the third iron core;
the third primary side alternating current winding and the third secondary side alternating current winding are both wound on a third side of the third iron core and a fourth side of the first iron core.
Optionally, the winding loss of the magnetic control transformer is as follows:
wherein P is w I is the winding loss of the magnetic control transformer 1 Is the effective current value of a single primary alternating-current winding, R 1 Equivalent resistance of single primary AC winding, I 2 Is the effective current value of a single secondary alternating-current winding, R 2 Is equivalent resistance of single secondary alternating current winding, I dc For single dc excitation windingDirect current, R dc Is the equivalent resistance of a single direct current excitation winding.
By means of the technical scheme, the magnetic control transformer comprises three rectangular annular iron cores, three primary side alternating current windings, three secondary side alternating current windings and six direct current excitation windings, wherein the first side and the second side of each iron core are respectively connected with one direct current excitation winding, the second side of each iron core is the opposite side of the first side of the iron core, each direct current excitation winding comprises an iron yoke and a coil, the iron yoke on each direct current excitation winding is made of amorphous nano materials, the third side and the fourth side of each iron core are respectively wound with the primary side alternating current windings and the secondary side alternating current windings, and the third side of each iron core is the opposite side of the fourth side of the iron core. Therefore, compared with the traditional silicon steel sheet 30Q130, the amorphous nano material is easier to saturate, and the amorphous nano material is adopted as the material of the iron yoke where the direct-current excitation winding of the magnetic control transformer is positioned, so that the number of turns of the direct-current excitation winding can be reduced, the direct-current of the direct-current excitation winding is reduced, the winding loss on the direct-current winding is reduced, the thermal ageing aggravation of equipment is slowed down, and the normal and stable operation of the equipment is maintained.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of a magnetic control transformer according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Fig. 1 is a schematic structural diagram of a magnetic control transformer according to an embodiment of the present application. The magnetically controlled transformer may include:
six direct current excitation windings 1, three primary side alternating current windings 2, three secondary side alternating current windings 3 and three rectangular annular iron cores 4.
Each core 4 has four sides, which can be denoted as a first side, a second side, a third side, and a fourth side, the first side and the second side being opposite sides, and the third side and the fourth side being opposite sides.
It will be appreciated that each core 4 has two sets of opposite sides, each of which is connected to the dc excitation winding 1, and each of the other sets of opposite sides may be connected to the primary ac winding 2 and the secondary ac winding 3.
The first and second sides of each iron core 4 are connected to one dc excitation winding 1 by the lateral sides of the iron core 4 shown in fig. 1.
Each of the dc excitation windings 1 may include an iron yoke 6 and a coil wound around the iron yoke 6, and a coil arrow on the iron yoke 6 of the iron core 4 shown in fig. 1 indicates a flow direction of the dc current.
Wherein, the iron yoke 6 on each direct current excitation winding 1 can be made of amorphous nano materials.
It is understood that the amorphous nanomaterial is a metal alloy, and the metal is naturally cooled and slowly solidified from a liquid state to a solid state in the preparation process. The atoms in the process can self-rearrange regularly, and the formed structure is crystalline and is actually a polycrystalline structure. If during its solidification the atoms are cooled with an ultra fast cooling rate, at which time the atoms are in a disordered state and not as fast as the rearrangement, are frozen instantaneously, the structure formed is amorphous. Compared with the traditional silicon steel sheet 30Q130, the amorphous nano material is easier to saturate.
Because amorphous nano material is more saturated than traditional silicon steel sheet 30Q130, after the iron yoke 6 on the direct current excitation winding 1 adopts amorphous nano material, the number of turns used by the direct current excitation winding 1 can be reduced, thereby reducing the direct current of the direct current excitation winding 1, and simultaneously, the hysteresis loss of amorphous nano is smaller, thus finally achieving the effect of reducing winding loss.
The third side and fourth side of each core 4 are wound with the primary side ac winding 2 and the secondary side ac winding 3.
The magnetic control transformer provided by the embodiment comprises three rectangular annular iron cores, three primary side alternating current windings, three secondary side alternating current windings and six direct current excitation windings, wherein the first side and the second side of each iron core are respectively connected with one direct current excitation winding, the second side of each iron core is the opposite side of the first side of the iron core, each direct current excitation winding comprises an iron yoke and a coil, the iron yoke on each direct current excitation winding is made of amorphous nano materials, the third side and the fourth side of each iron core are respectively wound with the primary side alternating current windings and the secondary side alternating current windings, and the third side of each iron core is the opposite side of the fourth side of the iron core. Therefore, compared with the traditional silicon steel sheet 30Q130, the amorphous nano material is easier to saturate, and the amorphous nano material is adopted as the material of the iron yoke where the direct-current excitation winding of the magnetic control transformer is positioned, so that the number of turns of the direct-current excitation winding can be reduced, the direct-current of the direct-current excitation winding is reduced, the winding loss on the direct-current winding is reduced, the thermal ageing aggravation of equipment is slowed down, and the normal and stable operation of the equipment is maintained.
In some embodiments of the present application, the number of turns of the coil of the dc excitation winding 1 mentioned in the foregoing embodiments may be specifically:
the number of turns of the coil of each direct current excitation winding 1 is smaller than the target number of turns of the coil of the direct current excitation winding 1.
When the target turns of the coil of each direct current excitation winding 1 are the turns of the coil of the direct current excitation winding 1 when the iron yoke material of the direct current excitation winding 1 is the silicon steel sheet 30Q 130.
It is understood that, since the amorphous nanomaterial is more saturated than the conventional silicon steel sheet 30Q130, the number of turns of the coil required can be reduced when the material used for the yoke of the dc excitation winding 1 is an amorphous nanomaterial, relative to the silicon steel sheet 30Q 130. Since the number of turns of the coil of the dc excitation winding 1 is reduced, the dc current of the dc excitation winding 1 is reduced, and the winding loss of the dc excitation winding 1 can be reduced.
Furthermore, if the amorphous nano material of the iron yoke of the direct current excitation winding 1 is replaced by the traditional silicon steel sheet 30Q130, the loss of a part of the iron core 4 can be reduced besides the winding loss of the direct current excitation winding 1, and the other parts of the materials of the magnetic control transformer are kept unchanged, so that the advantages of compactness, small occupied area and economy of the magnetic control transformer are ensured.
In some embodiments of the present application, the dc excitation windings 1 mentioned in the foregoing embodiments are further described, and specifically, each dc excitation winding 1 may be provided with a magnetic valve 5.
It will be appreciated that the magnetically controlled transformer may control the magnitude of the output voltage by adjusting the strength of the magnetic field, for example for controlling the voltage in a domestic appliance or industrial equipment. The provision of the magnet valve 5 on the dc excitation winding 1 provides a control means for the control personnel to control the output voltage by controlling the magnet valve 5.
In some embodiments of the present application, the relationship between the primary ac winding 2, the secondary ac winding 3 and the core 4 mentioned in the foregoing embodiments is further described, which may specifically be:
the three rectangular annular cores 4 include a first core, a second core, and a third core. The three primary ac windings 2 include a first primary ac winding, a second primary ac winding, and a third primary ac winding. The three secondary-side alternating-current windings 3 include a first secondary-side alternating-current winding, a second secondary-side alternating-current winding, and a third secondary-side alternating-current winding.
The first primary side alternating current winding and the first secondary side alternating current winding are both wound on a third side of the first iron core and a fourth side of the second iron core.
The second primary side alternating current winding and the second secondary side alternating current winding are both wound on a third side of the second iron core and a fourth side of the third iron core.
The third primary side alternating current winding and the third secondary side alternating current winding are both wound on a third side of the third iron core and a fourth side of the first iron core.
In fig. 1, for example, the forward core 4 is a first core, the left core 4 is a second core, the right core 4 is a third core, and the current is I A The winding of (a) is a first primary side alternating current winding, and the current is I B The winding of (a) is a second primary side alternating current winding, and the current is I C The winding of the transformer is a third primary side alternating current winding, and the current is I a The winding of (a) is a first secondary side alternating current winding, and the current is I b The winding of the transformer is a second secondary side alternating current winding, and the current is I c The winding of (a) is a third secondary side alternating current winding. Then, the first primary side ac winding is wound in a bundled manner around the third side of the first core and the fourth side of the second core, the first secondary side ac winding is wound in a bundled manner around the third side of the first core and the fourth side of the second core, the second primary side ac winding is wound in a bundled manner around the third side of the second core and the fourth side of the third core, the second secondary side ac winding is wound in a bundled manner around the third side of the third core and the fourth side of the first core, the third primary side ac winding is wound in a bundled manner around the third side of the third core and the fourth side of the first core.
In some embodiments of the present application, the winding loss of the magnetic control transformer mentioned in the foregoing embodiments is described, and specifically, the winding loss of the magnetic control transformer may be:
wherein P is w I is the winding loss of the magnetic control transformer 1 Is the effective current value of a single primary alternating-current winding 2, R 1 Equivalent resistance of single primary AC winding 2, I 2 Is a single secondaryEffective current value of ac winding 3, R 2 Is the equivalent resistance of a single secondary alternating current winding 3, I dc For the direct current of a single direct-current excitation winding 1, R dc Is the equivalent resistance of a single direct current excitation winding 1.
It can be understood that, since the magnetic control transformer is a three-phase system and adopts Y-shaped wiring, the loss of the alternating current winding needs to be multiplied by 3, and the loss of the direct current excitation winding needs to be multiplied by 6 in the same way.
Wherein the winding loss P w Related to the equivalent resistance (or conductance) and current density of the winding, wherein the conductivity of the copper wire is 5.7X10 7 The equivalent resistance of the winding is related to the length, cross-sectional area and conductivity of the winding, and the current on the winding is determined by the system capacity, load characteristics, etc.
The winding loss P is known from the calculation formula of the winding loss of the magnetic control transformer w With direct current I dc Is reduced by the reduction of the number of turns of the DC exciting winding 1, and thus the DC current I of the DC exciting winding 1 is reduced dc Will be reduced, then the winding loss P of the magnetic control transformer w Then the decrease is made.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and may be combined according to needs, and the same similar parts may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The magnetic control transformer is characterized by comprising three rectangular annular iron cores, three primary side alternating current windings, three secondary side alternating current windings and six direct current excitation windings;
the first side and the second side of each iron core are respectively connected with a direct current excitation winding, and the second side of each iron core is the opposite side of the first side of the iron core;
each direct current excitation winding comprises an iron yoke and a coil;
an iron yoke on each direct current excitation winding adopts amorphous nano materials;
the third side and the fourth side of each iron core are respectively wound with a primary side alternating current winding and a secondary side alternating current winding, and the third side of each iron core is the opposite side of the fourth side of the iron core.
2. The magnetic transformer of claim 1, wherein the number of turns of the coil of each dc excitation winding is smaller than the target number of turns of the coil of the dc excitation winding, and the target number of turns of the coil of each dc excitation winding is the number of turns of the coil of the dc excitation winding when the yoke material of the dc excitation winding is silicon steel sheet 30Q 130.
3. The magnetically controlled transformer of claim 1, wherein each dc excitation winding is provided with a magnetic valve.
4. The magnetic transformer according to claim 1, wherein,
the three rectangular annular iron cores comprise a first iron core, a second iron core and a third iron core, the three primary side alternating current windings comprise a first primary side alternating current winding, a second primary side alternating current winding and a third primary side alternating current winding, and the three secondary side alternating current windings comprise a first secondary side alternating current winding, a second secondary side alternating current winding and a third secondary side alternating current winding;
the first primary side alternating current winding and the first secondary side alternating current winding are both wound on a third side of the first iron core and a fourth side of the second iron core;
the second primary side alternating current winding and the second secondary side alternating current winding are both wound on a third side of the second iron core and a fourth side of the third iron core;
the third primary side alternating current winding and the third secondary side alternating current winding are both wound on a third side of the third iron core and a fourth side of the first iron core.
5. The magnetically controlled transformer of claim 4, wherein the winding losses of the magnetically controlled transformer are:
wherein P is w I is the winding loss of the magnetic control transformer 1 Is the effective current value of a single primary alternating-current winding, R 1 Equivalent resistance of single primary AC winding, I 2 Is the effective current value of a single secondary alternating-current winding, R 2 Is equivalent resistance of single secondary alternating current winding, I dc Direct current for single direct current exciting winding, R dc Is the equivalent resistance of a single direct current excitation winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311595243.XA CN117476330A (en) | 2023-11-24 | 2023-11-24 | Magnetic control transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311595243.XA CN117476330A (en) | 2023-11-24 | 2023-11-24 | Magnetic control transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117476330A true CN117476330A (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311595243.XA Pending CN117476330A (en) | 2023-11-24 | 2023-11-24 | Magnetic control transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117476330A (en) |
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2023
- 2023-11-24 CN CN202311595243.XA patent/CN117476330A/en active Pending
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