CN117238629A - Single-phase four-column inductance structure based on permanent magnet pre-bias and installation method thereof - Google Patents
Single-phase four-column inductance structure based on permanent magnet pre-bias and installation method thereof Download PDFInfo
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- CN117238629A CN117238629A CN202311188551.0A CN202311188551A CN117238629A CN 117238629 A CN117238629 A CN 117238629A CN 202311188551 A CN202311188551 A CN 202311188551A CN 117238629 A CN117238629 A CN 117238629A
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- 238000009434 installation Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 31
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 238000000429 assembly Methods 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000008358 core component Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 8
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- 230000004907 flux Effects 0.000 description 4
- 238000011900 installation process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The application discloses a single-phase four-column inductance structure based on permanent magnet pre-bias, which comprises a base and two magnetic core assemblies which are oppositely arranged, wherein the magnetic core assemblies are arranged on the base, each magnetic core of the magnetic core assemblies can be mutually separated, a permanent magnet is arranged in each second magnetic core, and the splicing part of each magnetic core in the magnetic core assemblies and the two magnetic core assemblies are locked through a first locking assembly. The installation method comprises the following steps: s1: welding a transverse limiting plate on the base, putting a third magnetic core at the bottom between the transverse limiting plates, splicing the first magnetic core and the second magnetic core, and locking the limiting plate at the bottom; s2: splicing a third magnetic core at the top and transverse limiting plates at two sides of the third magnetic core, and locking the limiting plates at the top; s3: the pressing plate is arranged above the transverse limiting plate at the top, and the second screw rods sequentially penetrate through the pressing plate, the top and the bottom mounting blocks and are locked through the second adjusting nuts. The permanent magnet demagnetizing device has the advantages of simple structure, convenience in mounting and dismounting, low production cost, difficulty in demagnetizing the permanent magnet and the like.
Description
Technical Field
The application relates to the field of rail transit electrical equipment, in particular to a single-phase four-column inductance structure based on permanent magnet pre-bias and an installation method thereof.
Background
The inductor is an indispensable magnetic component in the field of rail transit, and along with the development of the times, the power device is increasingly miniaturized and high-frequency, so that the design requirement on the inductor is higher. The direct current inductor is miniaturized, the weight and the volume of the direct current inductor are reduced, and meanwhile, the power density is improved, so that the direct current inductor can be greatly helpful for improving and improving the circuit performance. The rail transit field has high vibration requirements on magnetic components due to the requirements of operating environment and safety. The inductor has reliable structure and high mechanical strength, and is a necessary requirement for products. In order to miniaturize the inductor, the permanent magnet is often introduced into the inductor by utilizing the characteristic that the permanent magnet can pre-bias the magnetic, so that the initial working point of the magnetization curve is pre-biased to the opposite direction from the zero point, the effective working range of the magnetic flux density is widened, and the aim of reducing the weight of the inductor is fulfilled.
There are generally two arrangements in which permanent magnets are introduced into the inductor. One is to place a permanent magnet in the coil magnetic circuit, for example, application number: 201210240457.0 discloses a direct current reactor for a large variable frequency controller, which comprises an iron core and coils wound on the iron core, wherein air gaps are formed at two opposite corners of the iron core, permanent magnets are respectively embedded in the two air gaps, and the application causes serious eddy current loss problem in the permanent magnets when most of high-frequency magnetic flux generated by current passes through the permanent magnets, and causes serious inductance loss and serious heating, and simultaneously, the demagnetizing risk of the permanent magnets is caused by overhigh temperature, so that the permanent magnets are easy to be fixed and loose and easy to fall off during vibration; another is to place the permanent magnet in a bypass structure in connection with the inductor, for example as described in application number: 201621199006.7 discloses a differential-common-mode integrated inductor based on a permanent-magnet pre-bias technology, which comprises at least one first magnetic core, at least one second magnetic core and two coils, wherein the two coils are wound on corresponding positions of the at least one first magnetic core or the at least one second magnetic core, the at least one first magnetic core and the at least one second magnetic core are configured to form a common-mode magnetic circuit and a differential-mode magnetic circuit, at least one air gap is formed between the at least one first magnetic core and the at least one second magnetic core, the differential-common-mode integrated inductor further comprises at least one third magnetic core, the third magnetic core comprises a permanent magnet, the permanent magnet magnetic circuit is connected with the at least one air gap magnetic circuit in parallel, the magnetic core in the application has a complex shape, the processing and the installation are inconvenient, and the winding of the coils is relatively difficult for the magnetic core with a complex shape, and the subsequent maintenance and replacement are inconvenient.
Disclosure of Invention
The application aims to overcome the defects of the prior art and provide a single-phase four-column inductance structure based on permanent magnet pre-bias, which can reduce the eddy current loss of a permanent magnet, is not easy to demagnetize the permanent magnet, has higher mechanical strength and simple structure and is easy to install, and an installation method thereof.
The application further provides a method for installing the single-phase four-column inductance structure based on permanent magnet pre-bias.
In order to solve the technical problems, the application adopts the following technical scheme:
the utility model provides a single-phase four post inductance structure based on permanent magnetism prebias magnetic, includes base and two magnetic core components of relative arrangement, magnetic core component includes first magnetic core, second magnetic core and two third magnetic cores, first magnetic core and second magnetic core all splice in two between the third magnetic core, be equipped with the coil around on the first magnetic core, a set of third magnetic core that corresponds in two magnetic core components is located the base, is equipped with first air gap board between two sets of third magnetic cores that correspond, each all be equipped with the permanent magnet in the second magnetic core, the concatenation department and the two of each magnetic core in the magnetic core component all lock through first locking subassembly between the magnetic core component.
As a further improvement of the above technical scheme: the first locking assembly comprises a plurality of transverse limiting plates, a plurality of longitudinal limiting plates and a plurality of locking pieces, wherein two transverse limiting plates are arranged on two sides of two groups of third magnetic cores corresponding to the magnetic core assembly, the transverse limiting plates at the bottom are arranged on the base, longitudinal limiting plates are arranged on two sides of the first magnetic core and the second magnetic core in the magnetic core assembly, the joint of the third magnetic core and the first magnetic core in the magnetic core assembly and the joint of the third magnetic core and the second magnetic core are arranged between the corresponding longitudinal limiting plates on two sides, and the transverse limiting plates and the longitudinal limiting plates are connected through the locking pieces so as to limit the relative movement of the magnetic cores in the magnetic core assembly.
As a further improvement of the above technical scheme: and two ends of the first magnetic core and the second magnetic core in each magnetic core assembly are provided with second air gap plates.
As a further improvement of the above technical scheme: the locking piece comprises a first screw rod and first adjusting nuts arranged at two ends of the first screw rod, wherein the first screw rod penetrates through the transverse limiting plates at two sides and the third magnetic core, and the two first adjusting nuts are respectively arranged at the outer sides of the corresponding group of transverse limiting plates to lock the transverse limiting plates at two sides.
As a further improvement of the above technical scheme: the locking pieces are arranged at intervals along the length direction of the transverse limiting plate.
As a further improvement of the above technical scheme: and a hoisting hole is formed in the transverse limiting plate at the top.
As a further improvement of the above technical scheme: the single-phase four-column inductance structure further comprises a second locking assembly, the second locking assembly comprises a pressing plate, a plurality of installation blocks, a plurality of second screws and a plurality of second adjusting nuts, the installation blocks are respectively arranged on the transverse limiting plates, the pressing plate is arranged above the transverse limiting plates at the top, the second screws are respectively arranged on two corresponding groups of two sides of the transverse limiting plates, the second screws are respectively arranged in the installation blocks at the pressing plate, the top and the bottom in a penetrating mode, and the second adjusting nuts are respectively arranged on the outer sides of the installation blocks at the pressing plate and the bottom so as to lock the transverse limiting plates at the top and the bottom.
As a further improvement of the above technical scheme: the pressing plate is vertically arranged with the transverse limiting plate.
As a further improvement of the above technical scheme: the permanent magnets in the two magnetic core assemblies are arranged in a staggered mode, and shielding plates are arranged around the permanent magnets.
The installation method of the single-phase four-column inductance structure based on permanent magnet pre-bias comprises the following steps:
s1: welding transverse limiting plates on two sides of the bottom on the base, placing a group of third magnetic cores corresponding to the bottom between the transverse limiting plates on two sides, splicing the first magnetic cores and the second magnetic cores, and locking the bottom transverse limiting plates and the longitudinal limiting plates through locking pieces;
s2: the corresponding other group of third magnetic cores and transverse limiting plates at two sides of the top are spliced at the tops of the first magnetic cores and the second magnetic cores, and the transverse limiting plates and the longitudinal limiting plates at two sides of the top are locked through locking pieces;
s3: the pressing plate is placed above the transverse limiting plates at the top, and the second screw rods at the outer sides of the corresponding two transverse limiting plates sequentially penetrate through the pressing plate, the top and the mounting block at the bottom and are locked through the second adjusting nuts.
Compared with the prior art, the application has the advantages that: according to the single-phase four-column inductance structure based on permanent magnet pre-bias disclosed by the application, the permanent magnet is arranged in the bypass structure, so that the influence of a magnetic field generated after the coil is electrified is reduced, the eddy current loss of the permanent magnet is reduced, and the demagnetization of the permanent magnet due to the overhigh temperature is avoided; the first magnetic core, the second magnetic core and the third magnetic core in the magnetic core assembly are connected in a separable way, so that the manufacturing difficulty of the first magnetic core, the second magnetic core and the third magnetic core is reduced, the production cost is reduced, the coil is more convenient to be wound on the first magnetic core when the coil is installed and detached, and when the damaged magnetic core in the magnetic core assembly occurs, the damaged magnetic core is only replaced without replacing all the magnetic cores, so that the maintenance and replacement cost can be reduced; the splicing part of each magnetic core in the magnetic core assembly and the two magnetic core assemblies are locked through the first locking assembly, so that the mechanical connection strength of the single-phase four-post inductance structure based on permanent magnet pre-bias can be enhanced, and the phenomenon that the magnetic cores are separated due to vibration is effectively avoided.
According to the installation method of the single-phase four-column inductance structure based on permanent magnet pre-bias, firstly, the transverse limiting plates at the bottom are welded on the base, a group of corresponding third magnetic cores at the bottom are placed between the transverse limiting plates at the two sides, then each first magnetic core and each third magnetic core are spliced on the basis of the corresponding third magnetic cores at the bottom, the corresponding third magnetic cores at the top are spliced on the first magnetic cores and the third magnetic cores through the transverse limiting plates and the longitudinal limiting plates at the bottom, the transverse limiting plates at the two sides of the top are locked through the locking pieces, the effective support of each magnetic core in the whole installation process is ensured, the stability and the safety of the structure in the installation process can be improved, finally, the pressing plate is placed on the transverse limiting plates at the top, the corresponding second screw rods at the outer sides of the two transverse limiting plates sequentially penetrate through the pressing plate, the installation blocks at the top and the bottom, and are locked through the second adjusting nuts, so that the connection between each third magnetic core and the first magnetic core and the second magnetic core which are connected with the corresponding third magnetic core is firmer, and the whole magnetic core based on the single-phase four-column inductance structure is improved.
Drawings
Fig. 1 is a schematic perspective view of a single-phase four-column inductor structure based on permanent magnet pre-bias.
Fig. 2 is a schematic diagram of a magnetic path trace of a single-phase four-post inductor structure based on permanent magnet pre-bias in the present application.
Fig. 3 is a schematic diagram of a magnetic core connection structure of the single-phase four-post inductance structure based on permanent magnet pre-bias.
The reference numerals in the drawings denote: 1. a base; 2. a magnetic core assembly; 21. a first magnetic core; 22. a second magnetic core; 23. a third magnetic core; 211. a coil; 3. a first air gap plate; 4. a permanent magnet; 41. a shielding plate; 5. a first locking assembly; 51. a transverse limiting plate; 52. a locking member; 53. a longitudinal limiting plate; 521. a first screw; 522. a first adjustment nut; 6. a second locking assembly; 61. a pressing plate; 62. a mounting block; 63. a second screw; 64. a second adjustment nut; 10. a second air gap plate.
Detailed Description
The application will be described in further detail with reference to the drawings and the specific examples.
In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Fig. 1 to 3 show an embodiment of the present application, a single-phase four-pole inductance structure based on permanent magnet pre-bias, which includes a base 1 and two magnetic core assemblies 2 arranged oppositely, wherein the magnetic core assemblies 2 include a first magnetic core 21, a second magnetic core 22 and two third magnetic cores 23, the first magnetic core 21 and the second magnetic core 22 are spliced between the two third magnetic cores 23, a coil 211 is wound on the first magnetic core 21, a corresponding group of third magnetic cores 23 in the two magnetic core assemblies 2 is located on the base 1, a first air gap plate 3 is arranged between the corresponding two groups of third magnetic cores 23, permanent magnets 4 are arranged in each second magnetic core 22, and the splice of each magnetic core in the magnetic core assemblies 2 and the two magnetic core assemblies 2 are locked by a first locking assembly 5.
The permanent magnet 4 can provide a magnetic field opposite to the magnetic flux of the coil 211, so that the initial working point of the magnetization curve is biased to the negative direction, thereby widening the working range of the effective magnetic flux and reducing the weight of the inductor; when the coil 211 is not electrified, the magnetic resistance of the air gap 3 is far greater than the magnetic resistances of the first magnetic core 21, the second magnetic core 22 and the third magnetic core 23, at the moment, the motion trail of the magnetic circuit of the permanent magnet is phi 1 and phi 2, when the coil 211 is electrified, the magnetic resistance of the permanent magnet 4 is far greater than the magnetic resistance of the air gap 3, and the motion trail of the magnetic circuit of the coil is phi 3, so that the permanent magnet 4 is less influenced by the magnetic field generated by the coil 211, the eddy current loss of the permanent magnet 4 is reduced, and the demagnetization caused by the overhigh temperature is avoided; the first magnetic core 21, the second magnetic core 22 and the third magnetic core 23 in the magnetic core assembly 2 are connected in a separable way, so that the manufacturing difficulty of the first magnetic core 21, the second magnetic core 22 and the third magnetic core 23 is reduced, the production cost is reduced, the coil 211 is more convenient to be wound on the first magnetic core 21 when the coil is installed and detached, and when the damaged magnetic core in the magnetic core assembly 2 is damaged, only the damaged magnetic core is replaced without replacing all the magnetic cores, so that the maintenance and replacement cost can be reduced; the splicing part of each magnetic core in the magnetic core assembly 2 and the two magnetic core assemblies 2 are locked through the first locking group 5 pieces, so that the structure is compact, the mechanical connection strength of the single-phase four-column inductance structure based on permanent magnet pre-bias can be enhanced, and the phenomenon that the magnetic cores are separated due to vibration is effectively avoided.
In this embodiment, the first locking assembly 5 includes a plurality of transverse limiting plates 51, a plurality of longitudinal limiting plates 53 and a plurality of locking members 52, two transverse limiting plates 51 are disposed on two sides of two corresponding groups of third magnetic cores 23 of the magnetic core assembly 2, the transverse limiting plates 51 at the bottom are disposed on the base 1, two sides of the first magnetic core 21 and the second magnetic core 22 in each magnetic core assembly 2 are provided with longitudinal limiting plates 53, a joint of the third magnetic core 23 and the first magnetic core 21 and a joint of the third magnetic core 23 and the second magnetic core 22 in each magnetic core assembly 2 are located between the corresponding longitudinal limiting plates 53 on two sides, and the transverse limiting plates 51 and the longitudinal limiting plates 53 are connected by the locking members 52 to limit relative movement of each magnetic core in the magnetic core assembly 2. The transverse limiting plate 51 and the longitudinal limiting plate 53 can cooperate with the locking piece 52 to limit the relative movement of each magnetic core in the magnetic core assembly 2, and can also play a role in protecting each magnetic core.
In this embodiment, the second air gap plates 10 are disposed at two ends of the first magnetic core 21 and the second magnetic core 22 in each magnetic core assembly 2, so that the magnetic saturation phenomenon in each magnetic core after the coil 211 is electrified can be avoided, and the inductance can be better controlled.
In this embodiment, the locking member 52 includes a first screw 521 and first adjusting nuts 522 disposed at two ends of the first screw 521, the first screw 521 is disposed through the lateral limiting plates 51 and the third magnetic core 22 at two sides, and the two first adjusting nuts 522 are disposed outside a corresponding set of lateral limiting plates 51 to lock the lateral limiting plates 51 at two sides. The locking member 52 adopts the first screw 521 and the first adjusting nut 522, and has simple structure and convenient installation and disassembly.
In this embodiment, the plurality of locking members 52 are arranged at intervals along the length direction of the transverse limiting plate 51, so as to enhance the connection strength between the transverse limiting plate 51 and the third magnetic core 22 and improve the locking effect.
In this embodiment, the transverse limiting plate 51 at the top is provided with a lifting hole 511, so that the single-phase four-column inductor structure based on permanent magnet pre-bias is convenient to lift and transport.
In this embodiment, the single-phase four-column inductor structure further includes a second locking assembly 6, the second locking assembly 6 includes a pressing plate 61, a plurality of mounting blocks 62, a plurality of second screws 63 and a plurality of second adjusting nuts 64, the plurality of mounting blocks 62 are respectively disposed on each of the lateral limiting plates 51, the pressing plate 61 is disposed above the lateral limiting plate 51 at the top, the plurality of second screws 63 are respectively disposed on two sides of the corresponding two sets of lateral limiting plates 51, and each of the second screws 63 is sequentially disposed in the mounting blocks 62 at the pressing plate 61, the top and the bottom in a penetrating manner, and the plurality of second adjusting nuts 64 are respectively disposed outside the mounting blocks 62 at the pressing plate 61 and the bottom to lock the lateral limiting plates 51 at the top and the bottom. By tightening the second adjusting nut 64, the pressing plate 61 compresses the transverse limiting plate 51 positioned at the top, the second adjusting screw 63 applies pressure to the pressing plate 61 and the mounting block 62 on the transverse limiting plate 51, and further the two magnetic core assemblies 2 are fastened together, so that the connection strength of the splicing parts of the magnetic cores is improved; the adjusting screw 63 can be also suitable for single-phase four-column inductance structures based on permanent magnet pre-bias of different sizes, and has the advantages of simple structure and convenient installation.
In this embodiment, the pressing plate 61 is disposed perpendicular to the lateral limiting plate 51, so that the pressing plate can more uniformly apply pressure to the lateral limiting plate 51 and the third core 23 at the top when the second adjustment nut is tightened.
In the embodiment, the permanent magnets 4 in the two magnetic core assemblies 2 are arranged in a staggered manner, so that the demagnetizing caused by the fact that the permanent magnets 4 are heated and concentrated in use due to the single-phase four-column inductance structure based on permanent magnet pre-biasing can be avoided; the shielding plates 41 are arranged around the permanent magnet 4, so that the influence of magnetic leakage of the permanent magnet 4 can be further weakened, and electromagnetic interference can be restrained.
Example two
The installation method of the single-phase four-column inductance structure based on permanent magnet pre-bias in the embodiment comprises the following steps:
s1: welding the transverse limiting plates 51 on two sides of the bottom on the base 1, placing a group of third magnetic cores 23 corresponding to the bottom between the transverse limiting plates 51 on two sides, splicing the first magnetic cores 21 and the second magnetic cores 22, and locking the bottom transverse limiting plates 51 and the longitudinal limiting plates 53 through locking pieces 52;
s2: the corresponding other group of third magnetic cores 23 and transverse limiting plates 51 at the two sides of the top are spliced at the top of the first magnetic core 21 and the second magnetic core 22, and the transverse limiting plates 51 and the longitudinal limiting plates 53 at the two sides of the top are locked by locking pieces 52;
s3: the pressing plate 61 is placed above the top transverse limiting plate 51, and the second screws 63 on the outer sides of the corresponding two transverse limiting plates 51 sequentially penetrate through the pressing plate 61, the top and bottom mounting blocks 62 and are locked through the second adjusting nuts 64.
Firstly, the transverse limiting plates 51 positioned at the bottom are welded on the base, a group of the corresponding third magnetic cores 23 at the bottom are placed between the transverse limiting plates 51 at the two sides, then each first magnetic core 21 and each third magnetic core 23 are spliced on the basis of the corresponding third magnetic cores 23 at the bottom, the transverse limiting plates 51 and the longitudinal limiting plates 53 at the bottom are locked by the locking pieces 52, the corresponding third magnetic cores 23 at the top are spliced on the first magnetic cores 21 and the third magnetic cores 23, the transverse limiting plates 51 and the longitudinal limiting plates 53 at the two sides of the top are locked by the locking pieces 52, the effective support of each magnetic core in the whole installation process is ensured, the stability and the safety of the structure in the installation process can be improved, finally, the pressing plate is placed on the transverse limiting plates 51 at the top, the second screw rods 63 at the outer sides of the corresponding two transverse limiting plates 51 sequentially penetrate through the pressing plate 61, the installation blocks 62 at the top and the bottom, and are locked by the second adjusting nuts 64, the connection between each third magnetic core 23 and the first magnetic core 21 and the second magnetic cores 22 connected with the corresponding third magnetic cores is firmer, and the whole magnetic core based on the permanent-magnet pre-inductance four-phase single-phase magnetic core structure is improved.
While the application has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the application. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present application shall fall within the scope of the technical solution of the present application.
Claims (10)
1. A single-phase four-column inductance structure based on permanent magnet pre-bias is characterized in that: including base (1) and two magnetic core components (2) of relative arrangement, magnetic core component (2) include first magnetic core (21), second magnetic core (22) and two third magnetic cores (23), first magnetic core (21) and second magnetic core (22) all splice two between third magnetic core (23), be equipped with coil (211) around on first magnetic core (21), a set of third magnetic core (23) that correspond in two magnetic core components (2) are located base (1), are equipped with first air gap board (3) between two sets of third magnetic cores (23) that correspond, each all be equipped with permanent magnet (4) in second magnetic core (22), the concatenation department and the two of each magnetic core in magnetic core component (2) all lock through first locking subassembly (5) between magnetic core component (2).
2. The single-phase four-post inductor structure based on permanent magnet pre-bias according to claim 1, wherein: the first locking assembly (5) comprises a plurality of transverse limiting plates (51), a plurality of longitudinal limiting plates (53) and a plurality of locking pieces (52), two groups of third magnetic cores (23) corresponding to the magnetic core assemblies (2) are respectively provided with the transverse limiting plates (51), the transverse limiting plates (51) at the bottom are arranged on the base (1), the longitudinal limiting plates (53) are respectively arranged on two sides of the first magnetic cores (21) and the second magnetic cores (22) in the magnetic core assemblies (2), the splicing parts of the third magnetic cores (23) and the first magnetic cores (21) in the magnetic core assemblies (2) and the splicing parts of the third magnetic cores (23) and the second magnetic cores (22) are respectively located between the corresponding longitudinal limiting plates (53) at two sides, and the transverse limiting plates (51) and the longitudinal limiting plates (53) are connected through the locking pieces (52) so as to limit the relative movement of the magnetic cores in the magnetic core assemblies (2).
3. The single-phase four-post inductor structure based on permanent magnet pre-bias according to claim 2, wherein: a second air gap plate (10) is arranged between two ends of the first magnetic core (21) and the second magnetic core (22) in each magnetic core assembly (2) and the third magnetic core (23).
4. The single-phase four-post inductor structure based on permanent magnet pre-bias according to claim 2, wherein: the locking piece (52) comprises a first screw rod (521) and first adjusting nuts (522) arranged at two ends of the first screw rod (521), wherein the first screw rod (521) penetrates through the transverse limiting plates (51) at two sides, the longitudinal limiting plates (53) and the third magnetic core (23), and the two first adjusting nuts (522) are respectively arranged at the outer sides of the corresponding group of transverse limiting plates (51) so as to lock the transverse limiting plates (51) at two sides.
5. The single-phase four-post inductor structure based on permanent magnet pre-bias according to claim 2, wherein: the locking pieces (52) are arranged at intervals along the length direction of the transverse limiting plate (51).
6. The single-phase four-post inductor structure based on permanent magnet pre-bias according to claim 2, wherein: and a hoisting hole (511) is formed in the transverse limiting plate (51) at the top.
7. The single-phase four-post inductor structure based on permanent magnet pre-bias according to any one of claims 1-6, wherein: the single-phase four-column inductance structure further comprises a second locking assembly (6), the second locking assembly (6) comprises a pressing plate (61), a plurality of installation blocks (62), a plurality of second screws (63) and a plurality of second adjusting nuts (64), the installation blocks (62) are respectively arranged on each transverse limiting plate (51), the pressing plate (61) is arranged above the corresponding transverse limiting plates (51), the second screws (63) are respectively arranged on two sides of the corresponding two groups of transverse limiting plates (51), the second screws (63) are respectively arranged in the installation blocks (62) of the pressing plate (61), the top and the bottom in a penetrating mode, and the second adjusting nuts (64) are respectively arranged on the outer sides of the installation blocks (62) of the pressing plate (61) and the bottom so as to lock the transverse limiting plates (51) of the top and the bottom.
8. The single-phase four-post inductor structure based on permanent magnet pre-bias according to claim 7, wherein: the pressing plate (61) is arranged perpendicular to the transverse limiting plate (51).
9. The single-phase four-post inductor structure based on permanent magnet pre-biasing according to any one of claims 1-6, characterized in that: permanent magnets (4) in the two magnetic core assemblies (2) are arranged in a staggered mode, and shielding plates (41) are arranged around the permanent magnets (4).
10. A method for installing a single-phase four-column inductance structure based on permanent magnet pre-bias is characterized by comprising the following steps: the method comprises the following steps:
s1: welding transverse limiting plates (51) on two sides of the bottom on the base (1), placing longitudinal limiting plates (53), placing a group of third magnetic cores (23) corresponding to the bottom between the longitudinal limiting plates (53) on two sides, splicing the first magnetic cores (21) and the second magnetic cores (22), and locking the bottom transverse limiting plates (51) and the longitudinal limiting plates (53) through locking pieces (52);
s2: the tops of the first magnetic core (21) and the second magnetic core (22) are spliced with the corresponding other group of third magnetic cores (23) and the corresponding transverse limiting plates (51) on the two sides of the top, and the transverse limiting plates (51) and the longitudinal limiting plates (53) on the two sides of the top are locked through locking pieces (52);
s3: the pressing plate (61) is placed above the transverse limiting plates (51) at the top, and the second screws (63) at the outer sides of the two corresponding transverse limiting plates (51) sequentially penetrate through the pressing plate (61), the mounting blocks (62) at the top and the bottom and are locked through the second adjusting nuts (64).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311188551.0A CN117238629A (en) | 2023-09-13 | 2023-09-13 | Single-phase four-column inductance structure based on permanent magnet pre-bias and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311188551.0A CN117238629A (en) | 2023-09-13 | 2023-09-13 | Single-phase four-column inductance structure based on permanent magnet pre-bias and installation method thereof |
Publications (1)
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Citations (6)
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|---|---|---|---|---|
| US20020050905A1 (en) * | 2000-09-08 | 2002-05-02 | Tokin Corporation | Inductance component in which a permanent magnet for applying a magnetic bias is arranged outside an excitation coil |
| JP2006222387A (en) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | Choke coil unit |
| CN105391039A (en) * | 2015-11-18 | 2016-03-09 | 武汉大学 | Parallel magnetic saturation fault current limiter based on rare earth permanent magnet material |
| CN105469932A (en) * | 2016-01-19 | 2016-04-06 | 张月妹 | Direct current inductor |
| CN113643881A (en) * | 2021-08-09 | 2021-11-12 | 东南大学 | Permanent magnet bias inductance tuning device with parallel magnetic circuits and method |
| CN215988364U (en) * | 2021-10-19 | 2022-03-08 | 合肥科威尔电源***股份有限公司 | Ultra-wideband compact transformer |
-
2023
- 2023-09-13 CN CN202311188551.0A patent/CN117238629A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020050905A1 (en) * | 2000-09-08 | 2002-05-02 | Tokin Corporation | Inductance component in which a permanent magnet for applying a magnetic bias is arranged outside an excitation coil |
| JP2006222387A (en) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | Choke coil unit |
| CN105391039A (en) * | 2015-11-18 | 2016-03-09 | 武汉大学 | Parallel magnetic saturation fault current limiter based on rare earth permanent magnet material |
| CN105469932A (en) * | 2016-01-19 | 2016-04-06 | 张月妹 | Direct current inductor |
| CN113643881A (en) * | 2021-08-09 | 2021-11-12 | 东南大学 | Permanent magnet bias inductance tuning device with parallel magnetic circuits and method |
| CN215988364U (en) * | 2021-10-19 | 2022-03-08 | 合肥科威尔电源***股份有限公司 | Ultra-wideband compact transformer |
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