CN117352279A - Compact three-dimensional magnetic control transformer - Google Patents
Compact three-dimensional magnetic control transformer Download PDFInfo
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- CN117352279A CN117352279A CN202311509152.XA CN202311509152A CN117352279A CN 117352279 A CN117352279 A CN 117352279A CN 202311509152 A CN202311509152 A CN 202311509152A CN 117352279 A CN117352279 A CN 117352279A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000004804 winding Methods 0.000 claims abstract description 42
- 230000004907 flux Effects 0.000 claims description 53
- 229920006395 saturated elastomer Polymers 0.000 claims description 8
- 238000009826 distribution Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
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Abstract
The invention discloses a compact three-dimensional magnetic control transformer, which comprises: the same three single-frame iron cores are spliced to form a triangular pyramid three-dimensional structure; wherein each single-frame iron core comprises iron core columns respectively arranged at the left and right sides and transverse yokes respectively arranged at the upper and lower ends; a magnetic valve is arranged in the middle of each transverse yoke, a lateral yoke connected with the transverse yoke is arranged above the magnetic valve, the cross section areas of the magnetic valve and the lateral yoke are equal, and the magnetic valve corresponds to the protrusion of the lateral yoke in position; the direct current windings are wound on the side chokes respectively; the three-phase alternating current windings are respectively wound on the core columns of the two adjacent single-frame cores. The magnetic control transformer provided by the invention can stably output reactive power, greatly reduces the occupied space of transformer equipment, is particularly suitable for urban power distribution stations in limited space, and can be widely applied to actual power grid engineering.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a compact three-dimensional magnetic control transformer.
Background
At present, a large amount of application cables are used for supplying power in urban power grid construction, so that the capacitive reactive power charging power in a power system is increased, excessive redundant capacitive reactive power exists when the load is lighter, and inductive reactive power compensation equipment is needed to compensate the capacitive reactive power.
The conventional reactive power compensation scheme generally adopts an active compensation device based on power electronic equipment or a mode of externally connecting a controllable reactor (a thyristor controlled reactor, a magnetic controlled reactor and the like). However, the common problems with power electronics are: the reliability is not high, the device cannot work in a severe environment, the operation and maintenance cost is high, and electromagnetic interference generated by the high-frequency switch also affects the urban electromagnetic environment. And the other mode of adopting an external controllable reactor requires extra large occupied area and is not suitable for urban power distribution stations in limited space.
The magnetic control transformer combines the controllable reactor with the transformer, so that the traditional transformer has the capability of flexibly adjusting reactive voltage besides the basic function of boosting and reducing, and only part of occupied area is needed to be increased on the original transformer volume, thereby being particularly suitable for urban power distribution stations in limited space.
However, in the prior art, the magnetic control transformers are all of single-phase magnetic control transformer topological structures, and if three single-phase magnetic control transformers are adopted, the occupied area is large, so that the magnetic control transformers are not suitable for urban power distribution networks with limited space; there is no three-phase magnetically controlled transformer available in the prior art for use in existing power systems.
Disclosure of Invention
The invention aims to provide a compact three-dimensional magnetic control transformer so as to solve the technical problems that the existing magnetic control transformer is large in occupied area and is not suitable for an urban power distribution network with limited space.
The aim of the invention can be achieved by the following technical scheme:
a compact three-dimensional magnetically controlled transformer comprising:
the three same single-frame iron cores are spliced to form a triangular pyramid three-dimensional structure;
wherein each single-frame iron core comprises iron core columns respectively arranged at the left and right sides and transverse chokes respectively arranged at the upper and lower ends;
a magnetic valve is arranged in the middle of each transverse yoke, a lateral yoke connected with the transverse yoke is arranged above the magnetic valve, the cross section area of the magnetic valve is equal to that of the lateral yoke, and the magnetic valve corresponds to the protrusion of the lateral yoke in position;
the direct current windings are respectively wound on the side chokes; the three-phase alternating current windings are respectively wound on the core columns of the two adjacent single-frame cores.
Optionally, the cross-sectional area of the magnetic valve is half of the cross-sectional area of the two ends of the yoke.
Optionally, the bypass is an inverted U-shaped bypass.
Optionally, the side yoke is an arc side yoke.
Optionally, the three single-frame iron cores are symmetrically distributed in a triangular pyramid shape in space.
Optionally, two adjacent core columns in the adjacent two single-frame cores are a group of core columns, and three groups of core columns are symmetrically distributed in a triangular pyramid shape in space.
Optionally, the two dc windings of each single frame iron core generate two dc magnetic fluxes with the same direction at the corresponding magnetic valve.
Optionally, the alternating current magnetic flux flowing through each single-frame iron core is the same as one direction of the two direct current magnetic fluxes, and the alternating current magnetic fluxes and the direct current magnetic fluxes with the same direction are overlapped with each other, so that the magnetic valve is saturated.
Optionally, the alternating current magnetic flux flowing through each single-frame iron core is opposite to one direction of the two direct current magnetic fluxes, and the direct current magnetic fluxes counteract part of the alternating current magnetic fluxes, so that the magnetic valve is unsaturated.
The invention provides a compact three-dimensional magnetic control transformer, which comprises: the three same single-frame iron cores are spliced to form a triangular pyramid three-dimensional structure; wherein each single-frame iron core comprises iron core columns respectively arranged at the left and right sides and transverse chokes respectively arranged at the upper and lower ends; a magnetic valve is arranged in the middle of each transverse yoke, a lateral yoke connected with the transverse yoke is arranged above the magnetic valve, the cross section area of the magnetic valve is equal to that of the lateral yoke, and the magnetic valve corresponds to the protrusion of the lateral yoke in position; the direct current windings are respectively wound on the side chokes; the three-phase alternating current windings are respectively wound on the core columns of the two adjacent single-frame cores.
Based on the technical scheme, the invention has the beneficial effects that:
the same three single-frame iron cores are spliced to form a triangular pyramid three-dimensional structure, each single-frame iron core comprises an upper transverse yoke, a lower transverse yoke, a left iron core column and a right iron core column, a magnetic valve is arranged in the middle of each transverse yoke, a side yoke connected with the transverse yoke is arranged above the magnetic valve, a direct-current winding is wound on each side yoke respectively, and a three-phase alternating-current winding is wound on each iron core column of the two adjacent single-frame iron cores respectively; during normal operation, two direct current windings of any single-frame iron core can generate direct current magnetic fluxes with the same directions at the positions corresponding to the small magnetic valves, and alternating current magnetic fluxes can be overlapped with the direct current magnetic fluxes at a certain magnetic valve to saturate the magnetic valve, so that reactive power can be stably output, the transformer has the capability of flexibly adjusting reactive voltage on the basis of the traditional transformer voltage increasing and decreasing function, and only part of occupied area is needed to be increased on the original transformer volume, so that the transformer is particularly suitable for urban power distribution stations in limited space.
Compared with a three-column single-phase magnetic control transformer, the magnetic control transformer provided by the invention has the advantages that the occupied area and the occupied volume of three iron core columns can be saved, the occupied area and the occupied volume of the existing equipment are greatly reduced, and the occupied space of the equipment is reduced, so that a more flexible deployment mode is provided for transformer equipment, the design freedom degree of an urban substation plant is improved, and more flexible and reliable power transformer equipment is provided for industrial production, and can be widely applied to actual power grid engineering.
Drawings
FIG. 1 is a schematic diagram of a topology of an embodiment of the present invention;
fig. 2 is a schematic topology diagram of a single frame core according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an AC winding according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a DC winding according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating magnetic circuit analysis at a certain moment of a magnetically controlled transformer according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of ABC three-phase average magnetic flux in an embodiment of the present invention;
wherein 1 represents a single-frame iron core, 2 represents a magnetic valve, 3 represents a bypass choke, 4 represents an alternating current winding, and 5 represents a direct current winding.
Detailed Description
The embodiment of the invention provides a compact three-dimensional magnetic control transformer, which aims to solve the technical problems that the existing magnetic control transformer has larger occupied area and is not suitable for an urban power distribution network with limited space.
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the prior art, the magnetic control transformers are all of single-phase magnetic control transformer topological structures, and if three single-phase magnetic control transformers are adopted, the occupied area is large, so that the magnetic control transformers are not suitable for urban distribution networks with limited space. The prior art lacks a three-phase magnetically controlled transformer topology that is applicable to existing power systems.
Referring to fig. 1 to 5, the present invention provides an embodiment of a compact three-dimensional magnetic control transformer, comprising:
the three same single-frame iron cores are spliced to form a triangular pyramid three-dimensional structure;
wherein each single-frame iron core comprises iron core columns respectively arranged at the left and right sides and transverse chokes respectively arranged at the upper and lower ends;
a magnetic valve is arranged in the middle of each transverse yoke, a lateral yoke connected with the transverse yoke is arranged above the magnetic valve, the cross section area of the magnetic valve is equal to that of the lateral yoke, and the magnetic valve corresponds to the protrusion of the lateral yoke in position;
the direct current windings are respectively wound on the side chokes; the three-phase alternating current windings are respectively wound on the core columns of the two adjacent single-frame cores.
The three single-frame iron cores in the embodiment of the invention are spliced to form a triangular pyramid three-dimensional structure, so that the compact multifunctional magnetic control transformer is obtained. The magnetic control transformer adopts a triangular pyramid three-dimensional structure, and compared with three-column single-phase magnetic control transformers, the three-column single-phase magnetic control transformer can save the occupied area and the volume of three iron core columns.
In one embodiment, the magnetic control transformer comprises three identical single-frame iron cores, each single-frame iron core comprises iron core columns on the left and right sides and transverse yokes on the upper and lower ends, namely each single-frame iron core comprises two iron core columns and two transverse yokes, and the total number of the three single-frame iron cores is six. The three single-frame iron cores are spliced together to form a triangular pyramid three-dimensional structure, namely, the three single-frame iron cores are symmetrically distributed in a triangular pyramid mode in space.
Specifically, four iron core columns are arranged in two adjacent single-frame iron cores, wherein the two adjacent iron core columns are a group of iron core columns, and the three groups of iron core columns are symmetrically distributed in a triangular pyramid shape in space. It is assumed that two adjacent single-frame cores are the first single-frame core K and the second single-frame core M, and two adjacent core limbs of K and M are a set (a pair) of core limbs, that is, the core limb on the right of K and the core limb on the left of M form a pair of core limbs. In a similar method, six iron core columns of three single-frame iron cores can be divided into three pairs of iron core columns, and the three pairs of iron core columns are symmetrically distributed in a triangular pyramid shape in space.
It can be understood that the three single-frame iron cores are spliced to form a six-column three-dimensional structure, two adjacent iron core columns of two adjacent single-frame iron cores are a pair of iron core columns, and each pair of iron core columns are symmetrically distributed in a triangular pyramid shape in space.
In one embodiment, a magnetic valve is arranged in the middle of each transverse yoke, a lateral yoke connected with the transverse yoke is arranged above the magnetic valve, the sectional area of the magnetic valve is equal to that of the lateral yoke, and the magnetic valve corresponds to the protrusion of the lateral yoke in position. In a preferred embodiment, the side yoke is an inverted U-shaped side yoke or an arc-shaped side yoke.
It should be noted that, the purpose of setting the inverted U-shaped bypass choke is to wind the dc excitation winding, and may be arc-shaped or other shapes; for the embodiment of the invention, the shape of the bypass throttle does not influence the solution of the technical problem. In the embodiment of the invention, there is no requirement for the relative distance between the magnetic valve and the yoke (e.g., inverted U-shaped yoke), but the positions of the raised portions of the magnetic valve and yoke need to correspond.
Each single-frame iron core is provided with an upper transverse yoke and a lower transverse yoke, and a magnetic valve is arranged in the middle of each transverse yoke; in a preferred embodiment, the magnetic valve has a cross-sectional area that is half the cross-sectional area of the two ends of the yoke. The upper part of the magnetic valve is provided with a lateral yoke connected with the transverse yoke, the sectional area of the magnetic valve is equal to the sectional area of the lateral yoke, and the magnetic valve corresponds to the protruding position of the lateral yoke. In a preferred embodiment, the cross-sectional area of the yoke is half the cross-sectional area of the two ends of the yoke.
In one embodiment, the direct current windings are wound on the side chokes respectively; the three-phase alternating current windings are respectively wound on the core columns of the two adjacent single-frame cores. Each single-frame iron core is provided with two transverse chokes, each transverse choke is provided with a side choke, each single-frame iron core is provided with two side chokes, and each single-frame iron core is wound with two direct-current excitation windings.
In one embodiment, three-phase ac windings are wound on core legs of two adjacent single-frame cores, respectively. Each of the three-phase alternating current windings is wound on the iron core columns spliced together by two adjacent iron core frames, the six iron core columns are divided into three pairs of iron core columns, and the three pairs of iron core columns are symmetrically distributed in space in a triangular pyramid mode. For example, the three-phase ac windings are a phase, a B phase, and a C phase, respectively, the a phase ac winding is wound on two adjacent core legs of the first and second single frame cores (right core leg of the first single frame core and left Bian Tiexin leg of the second single frame core), the B phase ac winding is wound on two adjacent core legs of the second and third single frame cores (right core leg of the second single frame core and left Bian Tiexin leg of the third single frame core), and the C phase ac winding is wound on two adjacent core legs of the third and first single frame cores (right core leg of the third single frame core and left Bian Tiexin leg of the first single frame core).
According to the compact three-dimensional magnetic control transformer provided by the embodiment of the invention, when the magnetic control transformer works normally, two direct current windings of any single-frame iron core can generate two direct current magnetic fluxes with the same direction at the corresponding small magnetic valve, and the alternating current magnetic flux can be overlapped with the direct current magnetic flux at one magnetic valve to saturate the magnetic valve, so that reactive power is output; while at the other valve, the direct magnetic flux counteracts part of the alternating magnetic flux, the valve being unsaturated.
In one embodiment, the two dc windings of each single frame core produce two dc magnetic fluxes in the same direction at the corresponding magnetic valve. For each single-frame iron core, a magnetic valve is arranged in the middle of the upper transverse yoke and the lower transverse yoke, an inverted U-shaped bypass yoke is arranged above each magnetic valve, and the direct current windings are wound on the inverted U-shaped bypass yoke, namely, two direct current windings are wound on each single-frame iron core, and the two direct current windings can generate two direct current magnetic fluxes with the same direction and the same size at the corresponding positions of the magnetic valves.
In one embodiment, the alternating current magnetic flux flowing through each single frame iron core is in the same direction as one of the two direct current magnetic fluxes, and the alternating current magnetic fluxes and the direct current magnetic fluxes in the same direction are overlapped with each other, so that the magnetic valve is saturated.
In one embodiment, the alternating magnetic flux flowing through each single frame core is opposite to one of the two direct magnetic fluxes, and the direct magnetic fluxes counteract a portion of the alternating magnetic flux, so that the magnetic valve is unsaturated.
Specifically, magnetic fluxes flowing through iron core columns of three single-frame iron cores of the compact three-dimensional magnetic control transformer are ΦAB, ΦBC and ΦCA respectively, average magnetic fluxes of two single-frame iron core columns wrapped by A-phase, B-phase and C-phase windings are ΦA, ΦB and ΦC respectively, direct-current magnetic fluxes are ΦD, currents flowing through the A-phase, B-phase and C-phase windings are IA, IB and IC respectively, and direct-current currents in the direct-current excitation windings are ID.
Now, the actual flow directions of all magnetic fluxes related to the phase A in a certain period of time are taken and analyzed, wherein the actual flow directions of all magnetic fluxes related to the phase A in the period of time are shown in FIG. 5. The four direct current magnetic flux flows in the anticlockwise direction, ΦAB in the anticlockwise direction and ΦCA in the clockwise direction. During this time period, it is available: phi AB and phi D are the same in the direction of the lower left magnetic valve, and are mutually overlapped to cause saturation of the magnetic valve; phi CA and phi D are the same in the prescription direction of the upper right magnetic valve, and mutually overlapped to cause saturation of the magnetic valve; thus, for phase a, during this time, the magnetic flux generated by it will flow through the two saturated magnetic valves, one on each side, and the magnetic circuit will be symmetrical.
It should be noted that each single-frame iron core has two dc fluxes, and a compact three-dimensional magnetic control transformer has six dc fluxes in total, and only a phase a, which is related to only two single-frame iron cores and four dc fluxes on the two single-frame iron cores, is analyzed here.
Note that, referring to fig. 6, besides the cases of Φa & gt Φb and Φa & gt Φc, there may be two cases of Φb & gt Φa and Φb & gt Φc, and Φc & gt Φa and Φc & gt Φb. Because of the three-phase symmetry, the working principle of each phase is the same, and the three conditions are essentially indistinguishable.
In one embodiment, at any time, the alternating magnetic flux generated by any one of the alternating current windings flows through two saturated magnetic valves, and the two magnetic valves are bilaterally symmetrical.
From the above analysis, it is clear that the magnetic flux generated from any one of the phases at any time flows through two saturated magnetic valves, and the two magnetic valves are symmetrical in magnetic circuit. Therefore, the compact three-dimensional magnetic control transformer provided by the embodiment of the invention can stably output reactive power.
The embodiment of the invention provides a compact three-dimensional magnetic control transformer, which is characterized in that three identical single-frame iron cores are spliced to form a three-pyramid three-dimensional structure, each single-frame iron core comprises an upper transverse yoke, a lower transverse yoke, a left iron core column and a right iron core column, a magnetic valve is arranged in the middle of each transverse yoke, a side yoke connected with the transverse yoke is arranged above the magnetic valve, a direct current winding is wound on each side yoke respectively, and a three-phase alternating current winding is wound on the iron core columns of two adjacent single-frame iron cores respectively; during normal operation, two direct current windings of any single-frame iron core can generate direct current magnetic fluxes with the same directions at the positions corresponding to the small magnetic valves, and alternating current magnetic fluxes can be overlapped with the direct current magnetic fluxes at a certain magnetic valve to saturate the magnetic valve, so that reactive power can be stably output, the transformer has the capability of flexibly adjusting reactive voltage on the basis of the traditional transformer voltage increasing and decreasing function, and only part of occupied area is needed to be increased on the original transformer volume, so that the transformer is particularly suitable for urban power distribution stations in limited space.
Compared with a three-column single-phase magnetic control transformer, the magnetic control transformer provided by the embodiment of the invention can save the occupied area and volume of three iron core columns, greatly reduce the occupied area and volume of the existing equipment and reduce the occupied space of the equipment, thereby providing a more flexible deployment mode for transformer equipment, improving the design freedom of urban power distribution station plants, providing more flexible and reliable power transformer equipment for industrial production, and being widely applied to actual power grid engineering.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A compact three-dimensional magnetic control transformer, comprising:
the three same single-frame iron cores are spliced to form a triangular pyramid three-dimensional structure;
wherein each single-frame iron core comprises iron core columns respectively arranged at the left and right sides and transverse chokes respectively arranged at the upper and lower ends;
a magnetic valve is arranged in the middle of each transverse yoke, a lateral yoke connected with the transverse yoke is arranged above the magnetic valve, the cross section area of the magnetic valve is equal to that of the lateral yoke, and the magnetic valve corresponds to the protrusion of the lateral yoke in position;
the direct current windings are respectively wound on the side chokes; the three-phase alternating current windings are respectively wound on the core columns of the two adjacent single-frame cores.
2. The compact three-dimensional magnetic control transformer of claim 1, wherein the cross-sectional area of the magnetic valve is half the cross-sectional area of the two ends of the yoke.
3. The compact three-dimensional magnetic control transformer of claim 1, wherein the bypass is an inverted U-shaped bypass.
4. The compact three-dimensional magnetic control transformer of claim 1, wherein the shunt is an arcuate shunt.
5. The compact three-dimensional magnetic control transformer of claim 1, wherein the three single-frame cores are symmetrically distributed in a triangular pyramid shape in space.
6. The compact three-dimensional magnetic control transformer according to claim 5, wherein two adjacent core legs of two adjacent single-frame cores are a group of core legs, and three groups of core legs are symmetrically distributed in a triangular pyramid shape in space.
7. The compact three-dimensional magnetic control transformer of claim 1, wherein the two dc windings of each single frame core produce two dc magnetic fluxes in the same direction at the corresponding magnetic valve.
8. The compact three-dimensional type magnetic control transformer according to claim 7, wherein the alternating current magnetic flux flowing through each of the single frame cores is in the same direction as one of the two direct current magnetic fluxes, and the alternating current magnetic fluxes and the direct current magnetic fluxes in the same direction are superimposed on each other so that the magnetic valve is saturated.
9. The compact three-dimensional type magnetic control transformer according to claim 7, wherein the alternating current magnetic flux flowing through each of the single frame cores is opposite to one of the two direct current magnetic fluxes, and the direct current magnetic flux counteracts a part of the alternating current magnetic flux so that the magnetic valve is not saturated.
10. The compact three-dimensional magnetic control transformer of claim 1, wherein at any time, alternating magnetic flux generated by any one of the alternating current windings flows through two saturated magnetic valves, and the two magnetic valves are bilaterally symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311509152.XA CN117352279A (en) | 2023-11-13 | 2023-11-13 | Compact three-dimensional magnetic control transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311509152.XA CN117352279A (en) | 2023-11-13 | 2023-11-13 | Compact three-dimensional magnetic control transformer |
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| CN117352279A true CN117352279A (en) | 2024-01-05 |
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| CN202311509152.XA Pending CN117352279A (en) | 2023-11-13 | 2023-11-13 | Compact three-dimensional magnetic control transformer |
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- 2023-11-13 CN CN202311509152.XA patent/CN117352279A/en active Pending
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