Variable inductance magnet device based on bitter plate and reactor apparatus using the same

Abstract

The present disclosure relates to a biter plate-based magnet device and a reactor device using the same. The reactor device may include a magnet device. The magnet device may include a first lead plate; a second lead plate; a third lead plate; a plurality of conductor plates; and a plurality of insulator plates. The magnet device may be formed to have a center hole. The conductor plates and the insulator plates may be stacked such that an insulator plate is disposed between each of the two conductor plates. The conductor plate may be formed to have a first radial slot, and the insulator plate may be formed to have a second radial slot having a width wider in the circumferential direction than the first radial slot. According to the present disclosure, by implementing a beater plate-based magnet device and a reactor device using the same, it is possible to achieve high current density in a low volume, as well as to enable the fabrication of a reactor that is miniaturized and capable of varying inductance.

Description

Technology Field

[0001] The present disclosure relates to a variable inductance magnet device based on a beater plate and a reactor device using the same. Background Technology

[0002] A reactor is a device that can be connected to a power system to provide inductive reactance. Depending on their function, reactors can be classified into series reactors, shunt reactors, and reactors for power converters. Reactors used in power systems typically have large volume and weight to achieve high reactance values, which has posed a significant burden in terms of installation and cost.

[0003] Accordingly, there is a need to develop a miniaturized reactor with a new structure capable of achieving high current density in a small volume.

[0004] In addition, there is a need to develop a reactor capable of variable inductance. Prior art literature

[65535] Korean Patent Publication No. 10-2023-0054413 (2023.11.06.) The problem to be solved

[0005] The present disclosure aims to solve these problems by providing a variable inductance magnet device based on a beater plate and a reactor device using the same. means of solving the problem

[0006] According to one embodiment of the present disclosure, a biter plate-based magnet device may be provided. It may include a first lead plate; a first plurality of conductor plates; a first plurality of insulator plates; a second lead plate; a second plurality of conductor plates; a second plurality of insulator plates; and a third lead plate. The magnet device may be formed to have a center hole. The first plurality of conductor plates and the first plurality of insulator plates and the second plurality of conductor plates and the second plurality of insulator plates may be stacked such that an insulator plate is disposed between each of the two conductor plates. Each conductor plate may be formed to have a first radial slot, and each insulator plate may be formed to have a second radial slot having a width in the circumferential direction wider than the first radial slot of the conductor plate.The first plurality of conductor plates and the first plurality of insulator plates, the second plurality of conductor plates and the second plurality of conductor plates can be stacked in such a manner that one conductor plate and one insulator plate are stacked such that a first radial direction slot is formed in the one conductor plate based on a first radial angle and a second radial direction slot is formed in the one insulator plate based on the first radial angle, so that one radial direction end of the first radial direction slot of the one conductor plate and one radial direction end of the second radial direction slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate are stacked such that a first radial direction slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle and a second radial direction slot is formed in the next insulator plate based on the second radial angle, so that one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned. there is.

[0007] Additionally, the magnet device may further include a third plurality of conductor plates; a third plurality of insulator plates; and a fourth lead plate. The third plurality of conductor plates and the third plurality of insulator plates may be stacked such that an insulator plate is disposed between each of the two conductor plates. The above third plurality of conductor plates and the above third plurality of conductor plates can be stacked in such a manner that one conductor plate and one insulator plate are stacked such that a first radial direction slot is formed in the one conductor plate based on a first radial angle and a second radial direction slot is formed in the one insulator plate based on the first radial angle, so that one radial direction end of the first radial direction slot of the one conductor plate and one radial direction end of the second radial direction slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate are stacked such that a first radial direction slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle and a second radial direction slot is formed in the next insulator plate based on the second radial angle, so that one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned.

[0008] In addition, each of the above lead plates may be formed to have a contact portion for electrical connection protruding from an outer part.

[0009] Additionally, regarding the magnet device, an external power cable for energizing the magnet device may be connected to the contact portion of the first lead plate and the contact portion of the second lead plate, connected to the contact portion of the second lead plate and the contact portion of the third lead plate, or connected to the contact portion of the first lead plate and the contact portion of the third lead plate.

[0010] Additionally, the magnet device may further include: a first lead insulator plate disposed between a first lead plate and an uppermost conductor plate among the first plurality of conductor plates; a second lead insulator plate disposed between a lowermost conductor plate among the first plurality of conductor plates and the second lead plate; a third lead insulator plate disposed between the second lead plate and an uppermost conductor plate among the second plurality of conductor plates; and a fourth lead insulator plate disposed between a lowermost conductor plate among the second plurality of conductor plates and the third lead plate.

[0011] Additionally, the first lead plate and the first lead insulator plate may be stacked such that the first radial direction slot is formed in the first lead plate based on a third radial angle and the second radial direction slot is formed in the first lead insulator plate based on the third radial angle, so that one radial direction end of the first radial direction slot of the first lead plate and one radial direction end of the second radial direction slot of the first lead insulator plate are aligned. Among the first plurality of conductor plates, the uppermost conductor plate and the corresponding insulator plate may be stacked such that the first radial direction slot is formed in the uppermost conductor plate based on a fourth radial angle rotated by a predetermined angle from the third radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot of the uppermost conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned.

[0012] Additionally, the second lead plate and the third lead insulator plate may be stacked such that the first radial direction slot is formed in the second lead plate based on a third radial angle and the second radial direction slot is formed in the third lead insulator plate based on the third radial angle, so that one radial direction end of the first radial direction slot of the second lead plate and one radial direction end of the second radial direction slot of the third lead insulator plate are aligned. Among the second plurality of conductor plates, the uppermost conductor plate and the corresponding insulator plate may be stacked such that the first radial direction slot is formed in the uppermost conductor plate based on a fourth radial angle rotated by a predetermined angle from the third radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot of the uppermost conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned.

[0013] Additionally, among the first plurality of conductor plates, the lowest conductor plate and the corresponding insulator plate may be stacked such that the first radial direction slot is formed in the lowest conductor plate based on the fifth radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fifth radial angle, so that one radial direction end of the first radial direction slot of the lowest conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned. The second lead plate and the second lead insulator plate may be stacked such that the first radial direction slot is formed in the second lead plate based on a sixth radial angle rotated by a predetermined angle from the fifth radial angle, and the second radial direction slot is formed in the second lead insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot of the second lead plate and one radial direction end of the second radial direction slot of the second lead insulator plate are aligned.

[0014] In addition, among the second plurality of conductor plates, the lowest conductor plate and the corresponding insulator plate may be stacked such that the first radial direction slot is formed in the lowest conductor plate based on the fifth radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fifth radial angle, so that one radial direction end of the first radial direction slot of the lowest conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned. The third lead plate and the fourth lead insulator plate can be stacked such that the first radial direction slot is formed in the third lead plate based on a sixth radial angle rotated by a predetermined angle from the fifth radial angle, and the second radial direction slot is formed in the fourth lead insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot of the third lead plate and one radial direction end of the second radial direction slot of the fourth lead insulator plate are aligned.

[0015] In addition, a plurality of cooling holes may be formed on the edges of a virtual shape that is concentric and similar to the corresponding plate, larger than the center hole, and smaller than the corresponding plate. A plurality of such virtual shapes may be defined on the corresponding plate at predetermined intervals.

[0016] In addition, a plurality of fixing holes for fixing the magnet device may be formed symmetrically with respect to the center hole in each of the conductor plates, the insulator plates, and the lead plates.

[0017] According to one embodiment of the present disclosure, a reactor device may be provided. The reactor device may include a biter plate-based magnet device.

[0018] According to one embodiment of the present disclosure, a three-phase reactor device may be provided. The three-phase reactor device may include a first magnet device; a second magnet device; and a third magnet device. The first magnet device, the second magnet device, and the third magnet device may each be formed to have a central hole through which a first leg, a second leg, and a third leg of a core can pass. Each of the first magnet device, the second magnet device, and the third magnet device may include a first lead plate; a first plurality of conductor plates; a first plurality of insulator plates; a second lead plate; a second plurality of conductor plates; a second plurality of insulator plates; and a third lead plate. The first plurality of conductor plates and the first plurality of insulator plates, the second plurality of conductor plates and the second plurality of insulator plates may be stacked such that an insulator plate is disposed between each of the two conductor plates. Each conductor plate may be formed to have a first radial slot, and each insulator plate may be formed to have a second radial slot having a width in the circumferential direction wider than the first radial slot of the conductor plate.The first plurality of conductor plates and the first plurality of insulator plates, and the second plurality of conductor plates and the second plurality of insulator plates can be stacked in such a manner that one conductor plate and one insulator plate are stacked such that a first radial direction slot is formed in the one conductor plate based on a first radial angle and a second radial direction slot is formed in the one insulator plate based on the first radial angle, so that one radial direction end of the first radial direction slot of the one conductor plate and one radial direction end of the second radial direction slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate are stacked such that a first radial direction slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle and a second radial direction slot is formed in the next insulator plate based on the second radial angle, so that one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned. there is. Effects of the invention

[0019] According to the present disclosure, by implementing a biter plate-based magnet device and a reactor device using the same, it is possible to achieve high current density in a low volume and also enable the fabrication of a miniaturized reactor.

[0020] In addition, according to the present disclosure, a beater plate-based reactor device capable of adjusting inductance without disassembling and reassembling the reactor can be implemented.

[0021] In addition, according to the present disclosure, a beater plate-based reactor device can be implemented that maintains a uniform current, enables efficient cooling, and reduces mechanical stress. Brief explanation of the drawing

[0022] FIG. 1 is a schematic drawing showing an exemplary magnet device according to one embodiment of the present disclosure. FIG. 2 is an exemplary drawing showing a stacked structure of a magnet device according to one embodiment of the present disclosure. FIG. 3 is an exemplary drawing showing a conductor plate according to one embodiment of the present disclosure. FIG. 4 is an exemplary drawing showing an insulator plate according to one embodiment of the present disclosure. FIG. 5 is an exemplary drawing showing a lead plate according to one embodiment of the present disclosure. FIG. 6 is an exemplary drawing showing the lamination of a conductor plate and an insulator plate according to one embodiment of the present disclosure. FIG. 7 is an exemplary drawing showing the shape of two conductor plates and an insulator plate between them that constitute the stacking exemplified in FIG. 6. FIG. 8 is an exemplary drawing showing the movement of current through a conductor plate and an insulator plate in a stacked structure exemplified in FIG. 6. FIG. 9 is an exemplary drawing showing a core structure according to one embodiment of the present disclosure. FIG. 10 is an exemplary drawing showing a three-phase reactor device composed of a magnet device and a core according to one embodiment of the present disclosure. FIG. 11 is a schematic drawing showing an exemplary magnet device having a plurality of lead plates according to one embodiment of the present disclosure. FIG. 12 is a drawing showing an exemplary connection between the magnet device and the external power cable exemplified in FIG. 11. FIG. 13 is a drawing showing another exemplary connection between the magnet device and the external power cable exemplified in FIG. 11. Specific details for implementing the invention

[0023] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions could obscure the essence of the invention, such detailed description is omitted.

[0024] Various aspects of the present invention are described below. It should be understood that the inventions presented herein may be embodied in a wide variety of forms, and that any specific structure, function, or all thereof presented herein are merely illustrative. Based on the inventions presented herein, those skilled in the art will understand that any one aspect presented herein may be embodied independently of any other aspects, and that two or more such aspects may be combined in various ways. For example, an apparatus may be embodied or a method may be practiced using any number of aspects described herein. Furthermore, such an apparatus may be embodied or such a method may be practiced using structures, functions, or structures and functions other than those described herein, in addition to or other than these aspects.

[0025] A bitter plate (or bitter magnet) has been proposed as a novel magnet structure capable of generating high magnetic fields. A bitter plate can be constructed using stacked conductive plates and can achieve high current density in a small volume.

[0026] The present disclosure aims to provide a reactor device (100) utilizing such a beater plate-based magnet device (200) which can not only achieve high current density in a low volume but also enable the fabrication of a miniaturized reactor.

[0027] A biter plate-based magnet device (200) according to the present disclosure will be described in connection with FIGS. 1 to 8 and FIGS. 11 to 13, and a reactor device (100) according to the present disclosure that may include a magnet device (200) and a core (300) will be described in connection with FIGS. 9 and FIGS. 10.

[0028] FIG. 1 is a schematic drawing showing an exemplary magnet device according to one embodiment of the present disclosure.

[0029] As illustrated in FIG. 1, the magnet device (200) may be configured based on a beater plate and may be formed to have a central hole through which the core (300) can pass. In the example of FIG. 1, the central hole of the magnet device (200) is illustrated as a square shape with rounded corners, but is not limited thereto and may be implemented in other shapes (e.g., circular, polygonal, etc.) through which the core (300) can pass.

[0030] FIG. 2 is an exemplary drawing showing a stacked structure of a magnet device according to one embodiment of the present disclosure. FIG. 3 is an exemplary drawing showing a conductor plate according to one embodiment of the present disclosure. FIG. 4 is an exemplary drawing showing an insulator plate according to one embodiment of the present disclosure. FIG. 5 is an exemplary drawing showing a lead plate according to one embodiment of the present disclosure.

[0031] As illustrated in FIG. 2, the magnet device (200) may include an upper lead plate (230), a plurality of conductor plates (240-1, 240-2, ... 240-n), a plurality of insulator plates (250-1, 250-2, ... 250-n), and a lower lead plate (260). The conductor plates (240) and the insulator plates (250) may be stacked such that an insulator plate is placed between each of the two conductor plates. Additionally, an upper insulator plate (253) may be placed between the upper lead plate (230) and the uppermost conductor plate (240-1), and a lower insulator plate (257) may be placed between the lowermost conductor plate (240-n) and the lower lead plate (260). The stacked plates (230 to 260) may be formed to have a central hole through which a core (300) can pass. Additionally, these plates (230 to 260) may be formed as square plates with rounded corners as illustrated in FIGS. 2 to 5, but are not limited thereto and may be implemented in other shapes (e.g., circular, regular polygonal, etc.) capable of stacking and current transfer according to the present disclosure.

[0032] Additionally, each of the plates (230–260) may be formed to have a slot in the radial direction. Each conductor plate (240) and each lead plate (230, 260) may be formed to have a first radial slot (241) (Figs. 3 and 5). Each insulator plate (250) and upper and lower insulator plates (253, 257) may be formed to have a second radial slot (251) having a wider width in the circumferential direction than the first radial slot (241) of the conductor plate (240) (Fig. 4).

[0033] In one embodiment, the conductor plate (240) and the lead plates (230, 260) may be made of copper or a copper alloy, but are not limited thereto, and other conductive materials that satisfy the required conductivity, strength, etc. may be applied. In one embodiment, the conductor plate (240) may be formed to have a greater thickness than the insulator plate (250), and for example, the thickness of the conductor plate (240) may be 6 mm and the thickness of the insulator plate (250) may be 0.5 mm. Also, in one embodiment, the lead plates (230, 260) may be formed to have a greater thickness than the conductor plate (240), and for example, the thickness of the lead plates (230, 260) may be 8 mm.

[0034] Furthermore, the plates constituting the magnet device (200) may be stacked to have a stacked structure as shown in FIG. 2 for current movement through the plates. To this end, one radial end (245) (e.g., right end) of the first radial slot (241) of the conductor plate (240) and one radial end (255) (e.g., right end) of the second radial slot (251) of the insulator plate (250) may be stacked so as to be aligned (enlarged portion of FIG. 2).

[0035] Specifically, conductor plates (240) and insulator plates (250) are stacked such that one conductor plate (240) and one insulator plate (250) have a first radial direction slot (241) formed in one conductor plate (240) based on a first radial angle and a second radial direction slot (251) formed in one insulator plate (250) based on the same radial angle (i.e., the first radial angle), so that one radial direction end of the first radial direction slot (241) of one conductor plate (240) and one radial direction end of the second radial direction slot (251) of one insulator plate (250) are aligned, and the next conductor plate (240) and the next insulator plate (250) are stacked such that the first radial direction is based on a second radial angle that is rotated from the first radial angle by a predetermined angle (e.g., 30 degrees, 45 degrees, etc.) on the next conductor plate (240). A slot (241) is formed (e.g., 241-2 in FIG. 7), and a second radial direction slot (251) is formed in the next insulator plate (250) based on the same radial angle (i.e., second radial angle), so that one radial direction end of the first radial direction slot (241) of the next conductor plate (240) and one radial direction end of the second radial direction slot (251) of the next insulator plate (250) are aligned and stacked.

[0036] In one embodiment, a first radial slot (241) may be formed in the upper lead plate (230) and the lower lead plate (260) as described above so that the upper lead plate (230) and the lower lead plate (260) can also serve as conductor plates (240) for current movement. In this case, as illustrated in FIG. 2, the stacking method of the conductor plates (240) and insulator plates (250) described above may be applied in the same way to the stacking of the upper lead plate (230) and the lower lead plate (260).

[0037] Specifically, the upper lead plate (230) and the upper insulator plate (253) can be stacked such that a first radial direction slot (241) is formed in the upper lead plate (230) based on a third radial angle and a second radial direction slot (251) is formed in the upper insulator plate (253) based on a third radial angle, so that one radial direction end of the first radial direction slot (241) of the upper lead plate (230) and one radial direction end of the second radial direction slot (251) of the upper insulator plate (253) are aligned. The top conductor plate (240-1) and the corresponding insulator plate (250-1) can be stacked such that a first radial direction slot (241) is formed in the top conductor plate (240-1) based on a fourth radial angle rotated by a predetermined angle from a third radial angle, and a second radial direction slot (251) is formed in the corresponding insulator plate (250-1) based on the fourth radial angle, so that one radial direction end of the first radial direction slot (241) of the top conductor plate (240-1) and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate (250-1) are aligned.

[0038] Additionally, the lowest conductor plate (240-n) and the corresponding insulator plate (250-n) can be stacked such that a first radial direction slot (241) is formed in the lowest conductor plate (240-n) based on a fifth radial angle and a second radial direction slot (251) is formed in the corresponding insulator plate (250-n) based on a fifth radial angle, so that one radial direction end of the first radial direction slot (241) of the lowest conductor plate (240-n) and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate (250-n) are aligned. The lower lead plate (260) and the lower insulator plate (257) can be stacked such that a first radial direction slot (241) is formed in the lower lead plate (260) based on a sixth radial angle rotated by a predetermined angle from a fifth radial angle, and a second radial direction slot (251) is formed in the lower insulator plate (257) based on the sixth radial angle, so that one radial direction end of the first radial direction slot (241) of the lower lead plate (260) and one radial direction end of the second radial direction slot (251) of the lower insulator plate (257) are aligned.

[0039] Through the stacking method described above, the upper lead plate (230), conductor plates (240-1, 240-2,... 240-n), insulator plates (250-1, 250-2,... 250-n) and lower lead plate (260) may have a stacked structure as shown in FIG. 2.

[0040] The upper lead plate (230) and the lower lead plate (260) may each be formed to have a contact portion (233) (i.e., an electrical terminal) for electrical connection protruding from an outer portion (Fig. 5). When current is applied to the magnet device (200) through the contact portion (233) of the upper lead plate (230) and the lower lead plate (260), as shown in Fig. 2, the current may flow from the lead plates (230, 260) to the upper / lower conductor plates (253, 257) and to each stacked conductor plate (240) by current movement through the plates.

[0041] In one embodiment, the magnet device (200) may be formed to have an effective cooling structure for maintaining the temperature of the magnet device (200) with low power. To this end, a plurality of cooling holes (410) may be formed on the edges of a virtual shape (411) that is concentric and similar to the plate, larger than the center hole, and smaller than the plate, on each of the conductor plates (240), insulator plates (250), upper lead plate (230), and lower lead plate (260) of the magnet device (200). Here, when a plurality of virtual shapes (411) are formed, a plurality of virtual shapes (411) (411-1, 411-2, 411-3) may be defined on the plate at predetermined intervals (Fig. 3).

[0042] Furthermore, the plurality of cooling holes (410) may each have a circular shape, and some of the plurality of cooling holes (410) formed on the edges of the same virtual shape (411-1, 411-2, 411-3) may be formed to be arranged at predetermined intervals. For example, if the plates and the virtual shape (411-1, 411-2, 411-3) are squares with rounded corners, the cooling holes (410) formed on the straight sections of each side of the virtual shape (411-1, 411-2, 411-3) may be arranged at predetermined intervals.

[0043] As shown in FIGS. 3 to 5, by configuring cooling holes (410) on the plates, current can be flowed uniformly in the magnet device (200), enabling efficient heat transfer and cooling, and reducing mechanical stress.

[0044] Additionally, in one embodiment, a plurality of fixing holes (430) for fixing the magnet device (200) may be formed symmetrically with respect to the center hole of the magnet device (200) in each of the conductor plates (240), insulator plates (250), upper lead plate (230), and lower lead plate (260). The plates (230–260) of the magnet device (200) may be firmly fixed and compressed through the fixing holes (430) using bolts / nuts or other coupling structures.

[0045] FIG. 6 is an exemplary drawing showing a stack of conductor plates and insulator plates according to one embodiment of the present disclosure. FIG. 7 is an exemplary drawing showing the shape of two conductor plates and an insulator plate constituting the stacking illustrated in FIG. 6. FIG. 8 is an exemplary drawing showing the movement of current through the conductor plates and insulator plates in the stacking structure illustrated in FIG. 6.

[0046] As illustrated in FIGS. 6 to 8, when current is applied to the magnet device (200), the current travels through one conductor plate (240-2) and is connected to the next conductor plate (240-1) through the second radial slot (251) of the corresponding insulator plate (250), and the current can travel through the next conductor plate (240-1). In this way, a magnetic field can be formed in the magnet device (200) as the current travels along each conductor plate (240) of the magnet device (200).

[0047] FIG. 9 is an exemplary drawing showing a core structure according to one embodiment of the present disclosure.

[0048] In one embodiment, when the reactor device (100) is implemented as a single phase, the reactor device (100) may be composed of one magnet device (200) and a core (300) (e.g., rod-shaped) (i.e., iron core).

[0049] In one embodiment, as illustrated in FIG. 9, when the reactor device (100) is implemented in three phases, the core (300) may have a rectangular structure and may be composed of legs (310-1, 310-2, 310-3) and an upper yoke (320) and a lower yoke (330) connecting each leg. Each magnet device (200-1, 200-2, 200-3) may be arranged so that each leg (310-1, 310-2, 310-3) penetrates a central hole.

[0050] The reactor device (100) according to the present disclosure can achieve high current density with a beater plate-based structure while being implemented with much smaller dimensions than existing products (e.g., coil-based power reactors). For example, the plates (230–260) constituting the magnet device (200) may have a width of 226 mm and may be implemented to have a center hole with a width of 74 mm. Additionally, for example, the width / depth and height of the leg (310) penetrating each magnet device (200) in the core (300) may be 65 mm and 180 mm, respectively, and the height and length of the yoke (320, 330) may be 65 mm and 595 mm, respectively.

[0051] A reactor device (100) implemented in three phases can be exemplified as in FIG. 10.

[0052] FIG. 10 is an exemplary drawing showing a three-phase reactor device composed of a magnet device and a core according to one embodiment of the present disclosure.

[0053] As illustrated in FIG. 10, the three-phase reactor device (100) may include a first magnet device (200-1), a second magnet device (200-2), a third magnet device (200-3), and a core (300). Each leg (310-1, 310-2, 310-3) of the core (300) may be configured to penetrate the center hole of each magnet device (200-1, 200-2, 200-3). Additionally, each magnet device (200-1, 200-2, 200-3) may be formed to have a stacked structure based on a beater plate as described above in relation to FIGS. 1 to 8.

[0054] FIG. 11 is a schematic drawing showing an exemplary magnet device having a plurality of lead plates according to one embodiment of the present disclosure. FIG. 12 is a drawing showing an exemplary connection between the magnet device illustrated in FIG. 11 and an external power cable. FIG. 13 is a drawing showing another exemplary connection between the magnet device illustrated in FIG. 11 and an external power cable.

[0055] The magnet device (200) according to the present disclosure may be configured to have a plurality (e.g., three or more) lead plates, and through this configuration, a beater plate-based reactor device capable of controlling inductance without disassembling and reassembling the reactor can be implemented.

[0056] For example, when the magnet device (200) is configured to have three lead plates, the magnet device (200) may include a first lead plate (270), a first plurality of conductor plates (240), a first plurality of insulator plates (250), a second lead plate (275), a second plurality of conductor plates (240), a second plurality of conductor plates (250), and a third lead plate (280). Additionally, when the magnet device (200) is configured to have four lead plates, the magnet device (200) may further include a third plurality of conductor plates (240), a third plurality of insulator plates (250), and a fourth lead plate (285) (Fig. 11). Not limited thereto, furthermore, the magnet device (200) may be configured to include a plurality of lead plates determined according to the number of variable steps of the required inductance, and a plurality of conductor plates and a plurality of insulator plates stacked between each of two of the lead plates. Such a magnet device (200) may have the same stacking structure as the stacking structure shown in FIG. 2 as described above.

[0057] For example, the first plurality of conductor plates (240) and the first plurality of insulator plates (250), and the second plurality of conductor plates (240) and the second plurality of insulator plates (250) can be stacked such that an insulator plate is disposed between each of the two conductor plates. Additionally, a first lead insulator plate may be disposed between the first lead plate (270) and the uppermost conductor plate among the first plurality of conductor plates (240), and a second lead insulator plate may be disposed between the lowest conductor plate among the first plurality of conductor plates (240) and the second lead plate (275). A third lead insulator plate may be disposed between the second lead plate (275) and the uppermost conductor plate among the second plurality of conductor plates (240), and a fourth lead insulator plate may be disposed between the lowest conductor plate among the second plurality of conductor plates (240) and the third lead plate (280).

[0058] Furthermore, the third plurality of conductor plates (240) and the third plurality of insulator plates (250) can also be stacked such that an insulator plate is disposed between each of the two conductor plates. Additionally, a fifth lead insulator plate may be disposed between the third lead plate (280) and the uppermost conductor plate among the third plurality of conductor plates (240), and a sixth lead insulator plate may be disposed between the lowest conductor plate among the third plurality of conductor plates (240) and the fourth lead plate (285).

[0059] These stacked plates (230–285) may also be formed to have a central hole through which the core (300) can pass. Additionally, these plates (230–285) may be formed as square plates with rounded corners as illustrated in FIGS. 3 to 5, but are not limited thereto and may be implemented in other shapes (e.g., circular, regular polygonal, etc.) capable of stacking and current transfer according to the present disclosure.

[0060] Additionally, each of these lead plates (270, 275, 280, 285) may be formed to have a contact portion (233-1, 233-2, 233-3, 233-4) for electrical connection protruding from an outer portion. An external power cable for energizing the magnet device (200) may be connected to two of the contact portions of these lead plates, and the magnet device (200) may have different inductances depending on the lead plates connected as described later in relation to FIGS. 12 and 13. Through this configuration, a reactor device based on the magnet device (200) according to the present disclosure may be implemented to enable inductance adjustment via external cable connection without disassembling and reassembling the device. For example, when the magnet device (200) is configured to have three lead plates (270, 275, 280), an external power cable may be connected to the contact portion (233-1) of the first lead plate (270) and the contact portion (233-2) of the second lead plate (275) to have a first inductance value, or connected to the contact portion (233-2) of the second lead plate (275) and the contact portion (233-3) of the third lead plate (280), or connected to the contact portion (233-1) of the first lead plate (270) and the contact portion (233-3) of the third lead plate (280) to have a second inductance value different from (i.e., greater than) the first inductance.

[0061] For the stacking of the first lead plate (270), the first plurality of conductor plates (240), the first plurality of insulator plates (250), the second lead plate (275), the second plurality of insulator plates (250), the second plurality of insulator plates (250), the third lead plate (280), the third plurality of conductor plates (240), the third plurality of insulator plates (250), and the fourth lead plate (285), the same stacking method as illustrated in FIG. 2 may be applied for current movement through the plates. To this end, one radial end (245) (e.g., right end) of the first radial slot (241) of one conductor plate (240) and one radial end (255) (e.g., right end) of the second radial slot (251) of the corresponding insulator plate (250) may be stacked so as to be aligned (enlarged portion of FIG. 2).

[0062] Specifically, the first plurality of conductor plates (240) and the first plurality of insulator plates (250), the second plurality of conductor plates (240) and the second plurality of insulator plates (250), and the third plurality of conductor plates (240) and the third plurality of insulator plates (250) are stacked such that one conductor plate (240) and one insulator plate (250) have a first radial direction slot (241) formed in one conductor plate (240) based on a first radial angle and a second radial direction slot (251) formed in one insulator plate (250) based on the same radial angle (i.e., the first radial angle), so that one radial direction end of the first radial direction slot (241) of one conductor plate (240) and one radial direction end of the second radial direction slot (251) of one insulator plate (250) are aligned, and the next conductor plate (240) and the next insulator A plate (250) can be stacked in such a manner that a first radial direction slot (241) is formed in the next conductor plate (240) based on a second radial angle rotated by a predetermined angle from a first radial angle, and a second radial direction slot (251) is formed in the next insulator plate (250) based on the same radial angle (i.e., the second radial angle), so that one radial direction end of the first radial direction slot (241) of the next conductor plate (240) and one radial direction end of the second radial direction slot (251) of the next insulator plate (250) are aligned.

[0063] In one embodiment, when the magnet device (200) is configured to have three lead plates, the first lead plate (270), the second lead plate (275), and the third lead plate (280) are formed with a first radial slot (241) as described above so that the first lead plate (270), the second lead plate (275), and the third lead plate (280) can also serve as conductor plates (240) for current movement, and the stacking method shown in FIG. 2 described above can be applied in the same way.

[0064] Specifically, the first lead plate (270) and the first lead insulator plate can be stacked such that a first radial direction slot (241) is formed in the first lead plate based on a third radial angle and a second radial direction slot (251) is formed in the first lead insulator plate based on a third radial angle, so that one radial direction end of the first radial direction slot (241) of the first lead lead plate (230) and one radial direction end of the second radial direction slot (251) of the first lead insulator plate are aligned. Among the first plurality of conductor plates (240), the top conductor plate and the corresponding insulator plate may be stacked such that a first radial direction slot (241) is formed in the top conductor plate based on a fourth radial angle rotated by a predetermined angle from a third radial angle, and a second radial direction slot (251) is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot (241) in the top conductor plate and one radial direction end of the second radial direction slot (251) in the corresponding insulator plate are aligned.

[0065] Additionally, the second lead plate (275) and the third lead insulator plate can be stacked such that a first radial direction slot (241) is formed in the second lead plate (275) based on a third radial angle and a second radial direction slot (251) is formed in the third lead insulator plate based on a third radial angle, so that one radial direction end of the first radial direction slot (241) of the second lead plate (275) and one radial direction end of the second radial direction slot (251) of the third lead insulator plate are aligned. Among the second plurality of conductor plates (240), the uppermost conductor plate and the corresponding insulator plate may be stacked such that a first radial direction slot (241) is formed in the uppermost conductor plate based on a fourth radial angle rotated by a predetermined angle from a third radial angle, and a second radial direction slot (251) is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot (241) of the uppermost conductor plate and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate are aligned.

[0066] Additionally, among the first plurality of conductor plates (240), the lowest conductor plate and the corresponding insulator plate may be stacked such that a first radial direction slot (241) is formed in the lowest conductor plate based on a fifth radial angle and a second radial direction slot (251) is formed in the corresponding insulator plate based on a fifth radial angle, so that one radial direction end of the first radial direction slot (241) of the lowest conductor plate and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate are aligned. The second lead plate (275) and the second lead insulator plate can be stacked such that a first radial direction slot (241) is formed in the second lead plate (275) based on a sixth radial angle rotated by a predetermined angle from a fifth radial angle, and a second radial direction slot (251) is formed in the second lead insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot (241) of the second lead plate (275) and one radial direction end of the second radial direction slot (251) of the second lead insulator plate are aligned.

[0067] Additionally, among the second plurality of conductor plates (240), the lowest conductor plate and the corresponding insulator plate may be stacked such that a first radial direction slot (241) is formed in the lowest conductor plate based on a fifth radial angle and a second radial direction slot (251) is formed in the corresponding insulator plate based on a fifth radial angle, so that one radial direction end of the first radial direction slot (241) of the lowest conductor plate and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate are aligned. A third lead plate (280) and a fourth lead insulator plate can be stacked such that a first radial direction slot (241) is formed in the third lead plate (280) based on a sixth radial angle rotated by a predetermined angle from a fifth radial angle, and a second radial direction slot (251) is formed in the fourth lead insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot (241) of the third lead plate (280) and one radial direction end of the second radial direction slot (251) of the fourth lead insulator plate are aligned.

[0068] Additionally, in this embodiment, when the magnet device (200) is configured to have four lead plates, a first radial slot (241) is formed in the fourth lead plate (285) as described above so that the fourth lead plate (285) can also serve as a conductor plate (240) for current movement, and stacking can be performed in the same manner as described above with respect to the third lead plate (280), the fifth lead insulator plate, and the sixth lead insulator plate (i.e., the stacking method shown in FIG. 2 described above can be applied in the same way).

[0069] Meanwhile, the inductance of an inductor can be calculated as shown in Equation 1.

[0070]

[0071] Here, L can represent inductance, μ represents permeability, S represents cross-sectional area, N represents the number of turns, and l represents length.

[0072] Mathematical formula 1 can also be applied to calculate the inductance of a magnet device (200) according to the present disclosure, in which case N may correspond to the number of stacked conductor plates.

[0073] Accordingly, the inductance of the magnet device (200) can be determined according to the number of turns when the magnet device (200) is energized, that is, the number of conductor plates stacked between two connected lead plates. Accordingly, as shown in FIGS. 12 and 13, a variable inductance magnet device (200) can be implemented by changing the contact portion (233) of the lead plates (230, 260, 280, 285) connected to the external power cable (430, 450).

[0074] In the example of FIG. 12, one external power cable (430) is connected to the contact portion (233-4) of the fourth lead plate (285), and another external power cable (450) is connected to the contact portion (233-3) of the third lead plate (280). In the example of FIG. 13, one external power cable (430) is connected to the contact portion (233-4) of the fourth lead plate (285), and another external power cable (450) is connected to the contact portion (233-1) of the first lead plate (270).

[0075] In the examples of FIGS. 12 and 13, when the number of conductor plates stacked between two adjacent lead plates (i.e., the first plurality of conductor plates, the second plurality of conductor plates, and the third plurality of conductor plates) is the same (N), the inductance (L) in the example of FIG. 12 3-4 ) and inductance (L in the example of FIG. 13 3-4 ) can be as follows.

[0076]

[0077] A reactor device (100) utilizing a biter plate-based magnet device (200) according to the present disclosure is a miniaturized reactor having a high current density and can be applied to various devices such as a reactor for a power converter, a reactor for a vehicle, a reactor for a Flexible AC Transmission System (FACTS), a starting reactor, a shunt reactor, and a current limiting reactor.

[0078] In an additional embodiment, the magnet device (200) according to the present disclosure may be applied to a coreless air-core reactor device.

[0079] In addition, in an additional embodiment, a biter plate-based transformer device can be implemented by applying a magnet device (200) according to the present disclosure to each of the primary and secondary windings of the transformer.

[0080] The description of the presented embodiments is provided so that any person skilled in the art may use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not limited to the embodiments presented herein, but should be interpreted in the broadest possible scope consistent with the principles and novel features presented herein. Explanation of the symbols

[0081] 100 : Reactor device 200 : Magnet device 230: Upper lead plate 240 : Conductor plate 241: 1st Radial Slot 250 : Insulator plate 251: Second radial slot 260: Lower lead plate 270: 1st lead plate 275 : 2nd lead plate 280: 3rd lead plate 285 : 4th Lead Plate 300 : Core 310: Leg 320: Upper yoke 330: Lower yoke

Claims

Claim 1 A biter plate-based magnet device comprising: a first lead plate; a first plurality of conductor plates; a first plurality of insulator plates; a second lead plate; a second plurality of conductor plates; and a second plurality of insulator plates;and a third lead plate are included, and the magnet device is formed to have a central hole, and the first plurality of conductor plates and the first plurality of insulator plates and the second plurality of conductor plates and the second plurality of insulator plates are stacked such that an insulator plate is disposed between each of the two conductor plates, and each conductor plate is formed to have a first radial slot, and each insulator plate is formed to have a second radial slot having a width wider in the circumferential direction than the first radial slot of the conductor plate, and the first plurality of conductor plates and the first plurality of insulator plates and the second plurality of conductor plates and the second plurality of conductor plates are such that one conductor plate and one insulator plate have a first radial slot formed in the one conductor plate based on a first radial angle and a second radial slot formed in the one insulator plate based on the first radial angle, so that one radial end of the first radial slot of the one conductor plate A magnet device, wherein one radial end of a second radial slot of one insulator plate is aligned and stacked, and a next conductor plate and a next insulator plate are stacked such that a first radial slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle, and a second radial slot is formed in the next insulator plate based on the second radial angle, so that one radial end of the first radial slot of the next conductor plate and one radial end of the second radial slot of the next insulator plate are aligned and stacked. Claim 2 In claim 1, third plurality of conductor plates; third plurality of insulator plates; and further include a fourth lead plate, wherein the third plurality of conductor plates and the third plurality of insulator plates are stacked such that an insulator plate is disposed between each of the two conductor plates, and the third plurality of conductor plates and the third plurality of conductor plates are stacked such that one conductor plate and one insulator plate have a first radial direction slot formed in the one conductor plate based on a first radial angle and a second radial direction slot formed in the one insulator plate based on the first radial angle, so that one radial direction end of the first radial direction slot of the one conductor plate and one radial direction end of the second radial direction slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate have a first radial direction slot formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle and a second radial direction slot formed in the next insulator plate based on the second radial angle, so that one radial direction of the first radial direction slot of the next conductor plate A magnet device stacked in such a manner that the end and one radial end of the second radial slot of the next insulator plate are aligned. Claim 3 A magnet device according to claim 1, wherein each of the lead plates is formed to have a contact portion for electrical connection protruding from an outer portion. Claim 4 In claim 3, the external power cable for energizing the magnet device is connected to the contact portion of the first lead plate and the contact portion of the second lead plate, connected to the contact portion of the second lead plate and the contact portion of the third lead plate, or connected to the contact portion of the first lead plate and the contact portion of the third lead plate. Claim 5 A magnet device according to claim 1, further comprising: a first lead insulator plate disposed between the first lead plate and the uppermost conductor plate among the first plurality of conductor plates; a second lead insulator plate disposed between the lowermost conductor plate among the first plurality of conductor plates and the second lead plate; a third lead insulator plate disposed between the second lead plate and the uppermost conductor plate among the second plurality of conductor plates; and a fourth lead insulator plate disposed between the lowermost conductor plate among the second plurality of conductor plates and the third lead plate. Claim 6 In claim 5, the first lead plate and the first lead insulator plate are stacked such that the first radial direction slot is formed in the first lead plate based on a third radial angle and the second radial direction slot is formed in the first lead insulator plate based on the third radial angle, so that one radial direction end of the first radial direction slot of the first lead plate and one radial direction end of the second radial direction slot of the first lead insulator plate are aligned, and among the first plurality of conductor plates, the uppermost conductor plate and the corresponding insulator plate are stacked such that the first radial direction slot is formed in the uppermost conductor plate based on a fourth radial angle rotated by a predetermined angle from the third radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot of the uppermost conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned, and the second lead A plate and the third lead insulator plate are stacked such that the first radial direction slot is formed in the second lead plate based on a third radial angle and the second radial direction slot is formed in the third lead insulator plate based on the third radial angle, so that one radial direction end of the first radial direction slot of the second lead plate and one radial direction end of the second radial direction slot of the third lead insulator plate are aligned.A magnet device comprising, wherein among the second plurality of conductor plates, the uppermost conductor plate and the corresponding insulator plate are stacked such that the uppermost conductor plate has the first radial direction slot formed based on a fourth radial angle rotated by a predetermined angle from the third radial angle, and the corresponding insulator plate has the second radial direction slot formed based on the fourth radial angle, so that one radial direction end of the first radial direction slot of the uppermost conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned. Claim 7 In claim 5, the lowest conductor plate and the corresponding insulator plate among the first plurality of conductor plates are stacked such that the first radial direction slot is formed in the lowest conductor plate based on a fifth radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fifth radial angle, so that one radial direction end of the first radial direction slot of the lowest conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned, and the second lead plate and the second lead insulator plate are stacked such that the first radial direction slot is formed in the second lead plate based on a sixth radial angle rotated by a predetermined angle from the fifth radial angle and the second radial direction slot is formed in the second lead insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot of the second lead plate and one radial direction end of the second radial direction slot of the second lead insulator plate are aligned. The lower conductor plate and the corresponding insulator plate among the second plurality of conductor plates are stacked such that the first radial direction slot is formed in the lower conductor plate based on the fifth radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fifth radial angle, and the radial direction end of the first radial direction slot of the lower conductor plate and the radial direction end of the second radial direction slot of the corresponding insulator plate are aligned.A magnet device comprising: a third lead plate and a fourth lead insulator plate, wherein the third lead plate has a first radial direction slot formed in the third lead plate based on a sixth radial angle rotated by a predetermined angle from the fifth radial angle, and the fourth lead insulator plate has a second radial direction slot formed based on the sixth radial angle, such that one radial direction end of the first radial direction slot of the third lead plate and one radial direction end of the second radial direction slot of the fourth lead insulator plate are aligned. Claim 8 A magnet device according to claim 1, wherein each of the conductor plates, the insulator plates, and the lead plates has a plurality of cooling holes formed on the edge of a virtual shape that is concentric and similar to the plate, larger than the center hole, and smaller than the plate, and wherein a plurality of virtual shapes are defined on the plate at predetermined intervals. Claim 9 A magnet device according to claim 1, wherein each of the conductor plates, the insulator plates, and the lead plates has a plurality of fixing holes formed symmetrically with respect to the center hole for fixing the magnet device. Claim 10 A reactor device comprising a magnet device according to any one of claims 1 to 9. Claim 11 A three-phase reactor device comprising: a first magnet device; a second magnet device; and a third magnet device, wherein the first magnet device, the second magnet device, and the third magnet device are each formed to have a central hole through which a first leg, a second leg, and a third leg of a core can pass, and each of the first magnet device, the second magnet device, and the third magnet device comprises: a first lead plate; a first plurality of conductor plates; a first plurality of insulator plates; a second lead plate; a second plurality of conductor plates; and a second plurality of insulator plates.and a third lead plate are included, wherein the first plurality of conductor plates and the first plurality of insulator plates and the second plurality of conductor plates and the second plurality of insulator plates are stacked such that an insulator plate is disposed between each of the two conductor plates, and each conductor plate is formed to have a first radial slot, and each insulator plate is formed to have a second radial slot having a width wider in the circumferential direction than the first radial slot of the conductor plate, and the first plurality of conductor plates and the first plurality of insulator plates and the second plurality of conductor plates and the second plurality of insulator plates are such that one conductor plate and one insulator plate have a first radial slot formed in the one conductor plate based on a first radial angle and a second radial slot formed in the one insulator plate based on the first radial angle, so that one radial end of the first radial slot of the one conductor plate and one radial of the second radial slot of the one insulator plate A three-phase reactor device, wherein the directional ends are stacked so as to be aligned, and the next conductor plate and the next insulator plate are stacked in such a manner that a first radial direction slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle, and a second radial direction slot is formed in the next insulator plate based on the second radial angle, so as to be stacked such that one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned.

Images