Short circuit regulating device and modular multilevel converter comprising the same

Abstract

Disclosed are a short circuit adjusting device and a modular multilevel converter including the same. The short circuit adjusting device of each embodiment of the present invention includes an energization block body electrically connectable with a capacitor assembly and a short circuit block body in contact with or spaced apart from the energization block body. The energization block body and the short circuit block body are in contact with or spaced apart from each other at respective faces facing each other. The short circuit block body is coupled to a support portion. A cam member is rotatably coupled to the support portion, and an elastic member elastically supports the energization block body and the short circuit block body. Thus, contact and spacing of the energization block body and the short circuit block body can be performed due to rotation of the cam member.

Description

Technical Field

[0001] The present invention relates to a short-circuit regulating device and a modular multilevel converter including the same, and more particularly, to a short-circuit regulating device having a structure capable of simultaneously short-circuiting or disconnecting a plurality of sub-modules and a modular multilevel converter including the same. Background Technology

[0002] Flexible AC Transmission Systems (FACTS) are a type of operating technology that improves the flexibility of AC power systems by introducing power electronic control technology.

[0003] Specifically, flexible power transmission systems can control transmitted power by using semiconductor switching elements for electricity. Such flexible transmission systems can maximize the utilization of transmission line equipment, increase transmission capacity, and minimize voltage fluctuations.

[0004] In flexible power transmission systems, power storage and input / output are achieved using capacitor elements. These capacitor elements can be controlled by switching elements. Specifically, the switching elements can control the input current to and from the capacitor elements.

[0005] At this point, capacitor elements and switching elements can be configured modularly. Each module consisting of capacitor elements and switching elements can be called a "submodule." Voltage capacity, etc., can be easily adjusted by changing the number of submodules.

[0006] There can be multiple submodules. The rated capacity of the flexible power transmission system can be adjusted according to the number of submodules. In this case, the multiple submodules can be electrically connected to an external power source or load.

[0007] When maintaining more than one of a plurality of submodules, the flexible transmission system must be disconnected from the external power source or load. In this case, operating all submodules one by one may lead to a decrease in operational efficiency.

[0008] Korean Patent Publication No. 10-2017-0070599 discloses a short-circuit device for grounding a converter. Specifically, it discloses a short-circuit device having a structure that enables multiple sub-modules to be grounded simultaneously by connecting connectors that are electrically connected to multiple sub-modules.

[0009] However, this type of short-circuit device uses a sliding connector to electrically ground multiple sub-modules to each other. Therefore, it is difficult to guarantee the reliability of the electrical contact between the connector and the sub-modules.

[0010] Korean Patent No. 10-1994143 discloses a converter device and a short-circuit protection method thereof. Specifically, it discloses a converter device and a short-circuit protection method thereof that uses a DC voltage switch to redirect short-circuit current flowing on the DC voltage lines of a plurality of bypassed sub-modules to a freewheeling path.

[0011] However, this type of short-circuit device is limited in that it focuses only on improving the protection of the converter device. That is, the aforementioned existing literature does not disclose a scheme for simultaneously and reliably short-circuiting multiple submodules.

[0012] (Patent Document 1) Korean Patent Publication No. 10-2017-0070599 (June 22, 2017)

[0013] (Patent Document 2) Korean Patent No. 10-1994143 (June 28, 2019) Summary of the Invention

[0014] The problem that the invention aims to solve

[0015] The purpose of this invention is to provide a short-circuit regulating device with a structure capable of solving the above-mentioned problems, and a modular multilevel converter including the same.

[0016] Firstly, an objective is to provide a short-circuit regulating device having a structure capable of improving the short-circuit reliability of a capacitor, and a modular multilevel converter including the same.

[0017] Another objective is to provide a short-circuit regulating device with a structure that simplifies operation for short-circuiting capacitors, and a modular multilevel converter including the same.

[0018] Another objective is to provide a short-circuit adjustment device with a simple structure for providing components for short-circuiting capacitors, and a modular multilevel converter including the same.

[0019] Another objective is to provide a short-circuit regulating device having a structure capable of simultaneously short-circuiting a plurality of capacitors, and a modular multilevel converter including the same.

[0020] Another objective is to provide a short-circuit regulating device having a structure that allows easy confirmation of whether a capacitor is short-circuited, and a modular multilevel converter including the same.

[0021] Technical solutions to the problem

[0022] To achieve the above objectives, the present invention provides a short-circuit adjustment device, comprising: a first support plate extending in one direction; a second support plate extending in the same direction, spaced apart from the first support plate, facing the first support plate, and movable in another direction in a direction toward the first support plate and in a direction opposite to the first support plate; a energized block, coupled to the first support plate, facing the second support plate, and energically connected to an external capacitor assembly; a short-circuit block, coupled to the second support plate, facing the energized block, and energically connected to an external ground; and a cam member located between the first support plate and the second support plate, contacting the first support plate and the second support plate respectively, wherein the cross-section of the cam member is formed such that its lengths in the one direction and the other direction are different from each other, and if the cam member rotates, the short-circuit block contacts or separates from the energized block.

[0023] In addition, the cross-section of the cam component of the short-circuit adjustment device can be elliptical.

[0024] Additionally, the cam member of the short-circuit adjustment device may include: a first surface forming a portion of the outer peripheral surface of the cam member, having a predetermined curvature with the minor axis as the string; and a second surface continuous with the first surface, forming the remaining portion of the outer peripheral surface of the cam member, having a predetermined curvature with the major axis as the string and a smaller curvature than the first surface. If the cam member rotates, the first surface and the second surface may alternately contact the first support plate and the second support plate, respectively.

[0025] Additionally, the short-circuit adjustment device may include: a shaft member located between the first support plate and the second support plate, coupled to the cam member, and rotating together with the cam member; and a handle member coupled to the shaft member, rotating together with the shaft member, and extending outward.

[0026] In addition, the handle component of the short-circuit adjustment device can be configured to rotate a predetermined angle in a clockwise or counterclockwise direction, and the cam component rotates the predetermined angle together with the handle component.

[0027] In addition, the specified angle of the short-circuit adjustment device can be a right angle.

[0028] In addition, the short-circuit adjustment device may include an elastic member, which is combined with the first support plate and the second support plate respectively, and applies a restoring force to the second support plate in the direction toward the first support plate.

[0029] Furthermore, the magnitude of the restoring force stored in the elastic member when the energized block and the short-circuit block of the short-circuit regulating device are separated can be greater than the magnitude of the restoring force stored in the elastic member when the energized block and the short-circuit block are in contact.

[0030] In addition, the elastic member of the short-circuit adjustment device can be configured as a coil spring extending between the first support plate and the second support plate, and can be configured to overlap with the energized block and the short-circuit block in the other direction.

[0031] In addition, the elastic member of the short-circuit adjustment device can be configured as a coil spring extending in the other direction, with each end of the extending direction connected to the respective faces of the first support plate and the second support plate facing each other, and each end of the elastic member can be configured adjacent to the energized block and the short-circuit block respectively.

[0032] Furthermore, the energized block and the short-circuit block of the short-circuit regulating device can each be formed to have a specified thickness. When the energized block and the short-circuit block are in contact, the extension length of the elastic member can be less than or equal to the sum of the thickness of the energized block and the thickness of the short-circuit block.

[0033] In addition, the elastic member of the short-circuit adjustment device can be configured as a band of stretchable material, surrounding the first support plate and the second support plate from the outside, and combined with the first support plate and the second support plate, and can be configured to overlap with the energized block and the short-circuited block in the other direction.

[0034] In addition, the elastic member of the short-circuit adjustment device can be configured as a torsion spring, with each end of its extension direction connected to the respective faces of the first support plate and the second support plate facing each other, and each end of the elastic member can be configured adjacent to the energized block and the short-circuit block respectively.

[0035] In addition, the short-circuit regulating device may have a plurality of energized blocks and a plurality of short-circuit blocks, the plurality of energized blocks being spaced apart from each other along the first direction and being energically connected to a plurality of capacitor assemblies, the plurality of short-circuit blocks being spaced apart from each other along the first direction and being overlapped with the plurality of energized blocks along the other direction.

[0036] Additionally, the present invention provides a modular multilevel converter, comprising: a frame; a plurality of capacitor assemblies inserted into or extending from the frame; and a short-circuit adjustment device coupled to the frame and electrically connected to the capacitor assemblies and an external ground, the short-circuit adjustment device comprising: a first support plate coupled to the frame and extending in one direction; a second support plate extending in the first direction, spaced apart from the first support plate, facing the first support plate, and movable in another direction in a direction toward the first support plate and in a direction opposite to the first support plate; and a plurality of energized blocks coupled to the first support plate. A support plate, facing the second support plate, is electrically connected to a plurality of the capacitor assemblies; a plurality of short-circuit blocks, coupled to the second support plate, face the plurality of energized blocks, and are electrically connected to the external ground; a cam member, rotatably disposed between the first and second support plates, contacts the first and second support plates respectively; and an elastic member, coupled to the first and second support plates respectively, applies a restoring force to the second support plate in the direction toward the first support plate. The cross-section of the cam member is an ellipse shape comprising a major axis and a minor axis. If the cam member rotates and the minor axis is aligned along the first direction, the short-circuit blocks and the energized blocks are separated; if the cam member rotates and the major axis is aligned along the first direction, the short-circuit blocks and the energized blocks are in contact.

[0037] Furthermore, the plurality of short-circuit blocks and the plurality of energized blocks of the modular multilevel converter can be arranged spaced apart from each other along the one direction, and the elastic member has a plurality of members spaced apart from each other along the one direction, which can be arranged adjacent to the short-circuit blocks and the energized blocks respectively.

[0038] Additionally, the elastic component of the modular multilevel converter can be configured as a coil spring extending between the first support plate and the second support plate, and can be configured to overlap with the energized block and the short-circuited block in the other direction.

[0039] Additionally, the elastic member of the modular multilevel converter can be configured as a coil spring extending between the first support plate and the second support plate. In the elastic member, one end in the extending direction can be coupled to the first support plate between the plurality of energized blocks, and the other end in the extending direction can be coupled to the second support plate between the plurality of short-circuited blocks.

[0040] In addition, the elastic member of the modular multilevel converter is configured as a band of stretchable material that surrounds the first support plate and the second support plate from the outside, and is combined with the first support plate and the second support plate, and can be configured to overlap with the energized block and the short-circuited block in the other direction.

[0041] Additionally, the modular multilevel converter may include: a shaft member disposed between the first support plate and the second support plate, coupled to and rotating together with the cam member; and a handle member coupled to the shaft member, rotating together with the shaft member, and extending outward.

[0042] Invention Effects

[0043] This embodiment can utilize the rotation of the cam component to perform contact and separation between the energized block and the short-circuited block, thereby improving the short-circuit reliability of the capacitor. Attached Figure Description

[0044] Figure 1 This is a perspective view showing a power compensation device including a grounding mechanism according to an embodiment of the present invention.

[0045] Figure 2 It is shown Figure 1 A three-dimensional view of the power compensation device from another angle.

[0046] Figure 3 This is a perspective view showing the grounding mechanism according to an embodiment of the present invention.

[0047] Figure 4 This is a top view illustrating the grounding mechanism according to an embodiment of the present invention.

[0048] Figure 5 This is a side view illustrating the grounding mechanism according to an embodiment of the present invention.

[0049] Figure 6 This is a perspective view showing the grounding mechanism according to an embodiment of the present invention.

[0050] Figure 7 This is a top view illustrating the grounding mechanism according to an embodiment of the present invention.

[0051] Figure 8 This is a side view illustrating the grounding mechanism according to an embodiment of the present invention.

[0052] Figure 9 This is a perspective view showing a grounding mechanism according to another embodiment of the present invention.

[0053] Figure 10 This is a top view illustrating a grounding mechanism according to another embodiment of the present invention.

[0054] Figure 11This is a perspective view showing a grounding mechanism according to another embodiment of the present invention.

[0055] Figure 12 This is a top view illustrating a grounding mechanism according to another embodiment of the present invention.

[0056] Figure 13 This is a perspective view showing a grounding mechanism according to another embodiment of the present invention.

[0057] Figure 14 This is a top view showing a grounding mechanism according to another embodiment of the present invention.

[0058] Figure 15a and Figure 15b It is shown Figure 3 A perspective view of the operation process of the grounding mechanism in an embodiment.

[0059] Figure 16a and Figure 16b It is shown Figure 3 A top view of the operation process of the grounding mechanism in an embodiment.

[0060] Figure 17a and Figure 17b It is shown Figure 9 A perspective view of the operation process of the grounding mechanism in an embodiment.

[0061] Figure 18a and Figure 18b It is shown Figure 9 A top view of the operation process of the grounding mechanism in an embodiment.

[0062] Figure 19a and Figure 19b It is shown Figure 11 A perspective view of the operation process of the grounding mechanism in an embodiment.

[0063] Figure 20a and Figure 20b It is shown Figure 11 A top view of the operation process of the grounding mechanism in an embodiment.

[0064] Figure 21a and Figure 21b It is shown Figure 13 A perspective view of the operation process of the grounding mechanism in an embodiment.

[0065] Figure 22a and Figure 22b It is shown Figure 13 A top view of the operation process of the grounding mechanism in an embodiment. Detailed Implementation

[0066] Hereinafter, with reference to the accompanying drawings, the short-circuit regulating devices 400, 500, 600, and 700 of the present invention and the modular multilevel converter 1 including the same will be described in detail.

[0067] In the following description, some of the constituent elements may be omitted in order to clarify the features of the present invention.

[0068] 1. Definition of terms

[0069] As used in the following description, the term "energized" refers to the state in which an electrical signal, such as current, is transmitted between one or more components. In one embodiment, the energized state may be formed by a wire or the like.

[0070] The terms “front side,” “rear side,” “left side,” “right side,” “upper side,” and “lower side” used in the following description can be found in [reference needed]. Figure 1 , Figure 3 , Figure 9 , Figure 11 as well as Figure 13 Use the coordinate system shown to understand.

[0071] 2. Description of the configuration of the modular multilevel converter 1 according to an embodiment of the present invention

[0072] Reference Figure 1 and Figure 2 The present invention illustrates a modular multilevel converter 1 according to an embodiment of the present invention. The modular multilevel converter 1 can function as a STATCOM (Static Synchronous Compensator).

[0073] That is, the modular multilevel converter 1 is a static var compensator that performs the function of improving stability by supplementing the voltage loss during the transmission and distribution of electricity or power.

[0074] Hereinafter, with reference to the accompanying drawings, the configuration of a modular multilevel converter 1 according to an embodiment of the present invention will be described. In the illustrated embodiment, the modular multilevel converter 1 includes a submodule 10 and a frame 20.

[0075] (1) Explanation of the composition of submodule 10

[0076] Submodule 10 can be electrically connected to an external power supply or load, and actually performs the function of modular multilevel converter 1.

[0077] Submodule 10 is attached to frame 20. Specifically, submodule 10 is slidably attached to frame 20. In the illustrated embodiment, submodule 10 slides in the front-back direction, thereby attaching to or detaching from frame 20.

[0078] Submodule 10 can be supported by frame 20. Specifically, the lower side of submodule 10, which is attached to frame 20, can be supported by support frame 23.

[0079] Although not illustrated, there may be a plurality of submodules 10. The plurality of submodules 10 are spaced apart from each other and may be individually incorporated into the frame 20. In the illustrated embodiment, the plurality of submodules 10 may be arranged spaced apart from each other in a left-right direction.

[0080] At this time, the plurality of sub-modules 10 are preferably configured such that the conductor components 421, 521, 621, and 721 of the short-circuit adjustment devices 400, 500, 600, and 700 described later are respectively energizedly connected to the energized blocks 420, 520, 620, and 720.

[0081] Furthermore, the plurality of submodules 10 are electrically connected to the short-circuit regulating devices 400, 500, 600, and 700, which will be described later. Therefore, if a single short-circuit regulating device 400, 500, 600, or 700 is operated, the plurality of submodules 10 can be simultaneously short-circuited or simultaneously disconnected. This will be explained in detail later.

[0082] In the illustrated embodiment, submodule 10 includes capacitor assembly 100, valve assembly 200, and grounding portion 300.

[0083] The capacitor assembly 100 and the valve assembly 200 are physically and electrically connected. The capacitor assembly 100 and the valve assembly 200 can be physically and electrically connected to form a submodule 10.

[0084] The capacitor assembly 100 internally includes a capacitor element (not shown). The capacitor assembly 100 is electrically connected to the valve assembly 200. The capacitor element (not shown) inside the capacitor assembly 100 can be charged or discharged by the switching action of the valve assembly 200.

[0085] Therefore, the capacitor element (not shown) can store the electrical energy input to the submodule 10. The electrical energy stored in the capacitor element (not shown) can be used as a power source to drive the various components of the submodule 10. In addition, the electrical energy can be supplied as reactive power to an external power system that is electrically connected to the submodule 10.

[0086] In the illustrated embodiment, the capacitor assembly 100 is connected to the rear side of the valve assembly 200. This is because, compared to the capacitor assembly 100, situations requiring maintenance of the valve assembly 200 occur more frequently.

[0087] Each submodule 10 has a capacitor assembly 100 that is electrically connected to each energized block 420, 520, 620, 720 of the short-circuit regulating devices 400, 500, 600, and 700. The connection is achieved by wire members 421, 521, 621, and 721 disposed in each short-circuit regulating device 400, 500, 600, and 700.

[0088] Therefore, if the energized blocks 420, 520, 620, 720 and the short-circuit blocks 430, 530, 630, 730 are brought into contact or separated by operating the short-circuit adjustment devices 400, 500, 600, 700, each capacitor assembly 100 can be short-circuited or disconnected simultaneously. This will be explained in detail later.

[0089] In the illustrated embodiment, a capacitor trolley unit 110 is provided on the lower side of the capacitor assembly 100.

[0090] The capacitor assembly 100 is disposed in the capacitor trolley unit 110. In one embodiment, the capacitor assembly 100 may be fixedly coupled to the capacitor trolley unit 110.

[0091] The capacitor trolley unit 110 supports the capacitor assembly 100 on its lower side. In other words, the capacitor assembly 100 is mounted on the capacitor trolley unit 110.

[0092] As described above, in the modular multilevel converter 1 of this embodiment of the invention, a plurality of sub-modules 10 are electrically connected to each other, thereby increasing their rated capacity.

[0093] Therefore, the capacitor trolley unit 110 has a number corresponding to the number of capacitor assemblies 100, and can support the capacitor assemblies 100 of each sub-module 10 on the underside.

[0094] The capacitor trolley unit 110 can be slidably coupled to the frame 20. Specifically, the capacitor trolley unit 110 is slidably coupled to a frame rail (not shown) extending across a plurality of support frames 23.

[0095] When coupled to the frame guide rail (not shown), the capacitor trolley unit 110 can slide in the direction facing the short-circuit adjustment devices 400, 500, 600, 700 and in the opposite direction, namely the rear side and the front side in the illustrated embodiment.

[0096] Valve assembly 200 is the part of the submodule that can be electrically connected to an external power source or load. Additionally, valve assembly 200 can input or output electrical energy through an electrically connected connection to capacitor assembly 100.

[0097] The valve assembly 200 may have a plurality of switching modules internally. In one embodiment, the switching module may be an IGBT (Insulated Gate Bipolar Transistor).

[0098] Additionally, the valve assembly 200 may internally have a control board for controlling the switching module. In one embodiment, the control board may be a printed circuit board (PCB).

[0099] In the illustrated embodiment, the valve assembly 200 is located in front of the capacitor assembly 100. This is because maintenance of the valve assembly 200 is performed more frequently than that of the capacitor assembly 100.

[0100] In the illustrated embodiment, a valve assembly trolley unit 210 is provided on the lower side of the valve assembly 200.

[0101] Valve assembly 200 is disposed in valve assembly trolley unit 210. In one embodiment, valve assembly 200 may be fixedly coupled to valve assembly trolley unit 210.

[0102] The valve assembly trolley unit 210 supports the valve assembly 200 from below. In other words, the valve assembly 200 is mounted on the valve assembly trolley unit 210.

[0103] As described above, in the modular multilevel converter 1 of this embodiment of the invention, a plurality of sub-modules 10 are electrically connected to each other, thereby increasing their rated capacity.

[0104] Therefore, the valve assembly trolley unit 210 has a number corresponding to the number of valve assemblies 200, and can support the valve assemblies 200 of each submodule 10 on the lower side.

[0105] The valve assembly trolley unit 210 can be slidably coupled to the frame 20. Specifically, the valve assembly trolley unit 210 is slidably coupled to a frame rail (not shown) extending across a plurality of support frames 23.

[0106] When engaged with the frame guide rail (not shown), the valve assembly trolley unit 210 can slide in the direction facing the short-circuit adjustment devices 400, 500, 600, 700 and in the opposite direction, i.e., the rear side and the front side in the illustrated embodiment.

[0107] At this time, the valve assembly trolley unit 210 can move together with the capacitor trolley unit 110 or move separately. Therefore, at least one of the capacitor assembly 100 or valve assembly 200 disposed in each trolley unit 110, 210 can be attached to or separated from the frame 20.

[0108] Therefore, the heavy-duty capacitor assembly 100 or valve assembly 200 can be easily installed or removed.

[0109] The grounding portion 300 is detachably connected to the capacitor assembly 100 or the valve assembly 200. When the grounding portion 300 is connected, the power stored in the capacitor assembly 100 can be discharged. This process can be performed by connecting the grounding portion 300 to the capacitor assembly 100 after it passes through the valve assembly 200.

[0110] The grounding portion 300 can be used to discharge the power stored inside the individual capacitor assembly 100. For this purpose, the grounding portion 300 can be electrically connected to the external ground.

[0111] Therefore, when it is necessary to separate a specific capacitor assembly 100 from the frame 20, the capacitor assembly 100 can be discharged simply by connecting it to the specific capacitor assembly 100 via the grounding portion 300.

[0112] (2) Explanation of Frame 20

[0113] The frame 20 forms the skeleton of the modular multilevel converter 1. The frame 20 supports the capacitor assembly 100 and the valve assembly 200 on the upper or lower side. In the illustrated embodiment, the frame 20 supports the capacitor assembly 100 and the valve assembly 200 on the lower side.

[0114] The capacitor assembly 100 and the valve assembly 200 are detachably mounted on the frame 20. As described above, this mounting can be achieved by the capacitor trolley unit 110 and the valve assembly trolley unit 210.

[0115] The frame 20 can be formed of a high-rigidity material. In one embodiment, the frame 20 can be formed of steel. In another embodiment, the frame 20 can be formed of fiberglass reinforced plastic (FRP).

[0116] In addition, the frame 20 is shaped like an H-beam, which can further enhance the axial rigidity of the frame 20.

[0117] There can be a plurality of frames 20. The plurality of frames 20 can be stacked on top of each other. Furthermore, the capacitor assembly 100 and valve assembly 200 supported by the frames 20 can also be configured in multiple layers. Thus, the capacity of the modular multilevel converter 1 can be increased.

[0118] The frames 21, 22, 23, and 24 of the frame 20 described later can be configured to ensure sufficient rigidity in their extension direction and in directions other than their extension direction. As an example, the frames 21, 22, 23, and 24 can be configured as H-Beams with a cross-section of “H”.

[0119] In the illustrated embodiment, the frame 20 includes an upper frame 21, a horizontal frame 22, a support frame 23, a fixed frame 24, and a piping component 25.

[0120] The upper frame 21, together with the horizontal frame 22, forms the outer side of the frame 20. The upper frame 21 extends along the height direction of the frame 20, that is, the vertical direction in the illustrated embodiment.

[0121] There may be a plurality of upper frames 21. The plurality of upper frames 21 are spaced apart from each other and can be configured in different positions. In the illustrated embodiment, there are four upper frames 21, located on the front left and right sides, and the rear left and right sides, respectively.

[0122] The upper frame 21 is connected to the horizontal frame 22. The horizontal frame 22 can extend between a plurality of upper frames 21 arranged adjacent to each other. There are a plurality of horizontal frames 22, which can be connected to the upper frames 21 at different positions.

[0123] In the illustrated embodiment, the horizontal frame 22 extends between a pair of upper frames 21 located in the left-right direction. Furthermore, the horizontal frame 22 extends above and below each pair of upper frames 21.

[0124] A support frame 23 is mounted on the horizontal frame 22.

[0125] The support frame 23 supports the frame rails (not shown) that are slidably connected to the capacitor supply trolley unit 110 and the valve assembly trolley unit 210.

[0126] The support frame 23 is combined with the horizontal frame 22. Specifically, the support frame 23 is combined with the horizontal frames 22 that are combined with a pair of different upper frames 21.

[0127] In the illustrated embodiment, the support frame 23 extends in a left-right direction, with its left end connected to the horizontal frame 22 located on the lower left side. Additionally, the right end of the support frame 23 is connected to the horizontal frame 22 located on the lower right side.

[0128] There may be a plurality of support frames 23. The plurality of support frames 23 may be spaced apart from each other along the direction of the frame guide (not shown). In the illustrated embodiment, there are five support frames 23, spaced apart from each other in the front-to-back direction.

[0129] Therefore, a plurality of support frames 23 can support the frame guide rail (not shown) at a plurality of positions. Thus, the frame guide rail (not shown) and the capacitor trolley unit 110 and valve assembly trolley unit 210 connected thereto can be stably supported.

[0130] Among the plurality of support frames 23, the support frame 23 located at the end of its configuration direction, i.e., the support frame 23 located on the rearmost side in the illustrated embodiment, is provided with short-circuit adjustment devices 400, 500, 600, and 700. This is understood to be because the capacitor assembly 100 in the submodule 10 incorporated into the frame 20 is located on the relatively rearward side.

[0131] The composition and operation of the short-circuit regulating devices 400, 500, 600, and 700 will be described in detail later.

[0132] The fixed frame 24 supports the piping components 25 that supply fluid flow to the components inside the cooling valve assembly 200. Additionally, the fixed frame 24 supports a plurality of horizontal frames 22 that are spaced apart from each other.

[0133] A fixed frame 24 extends between a plurality of horizontal frames 22 arranged spaced apart from each other. In the illustrated embodiment, the fixed frame 24 extends in a left-right direction and is respectively connected to the upper horizontal frames 22 located in the left-right direction.

[0134] Therefore, each of the horizontal frames 22 located on the upper left and right sides is supported by a fixed frame 24, thereby stably maintaining its structure.

[0135] The piping component 25 is arranged adjacent to the fixing frame 24. The piping component 25 may be supported by the fixing frame 24 on one side, namely the rear side in the illustrated embodiment.

[0136] Piping component 25 functions as a channel for fluid flow to cool the components disposed in valve assembly 200.

[0137] Piping assembly 25 is flowably connected to an external fluid supply source (not shown). Fluid for cooling valve assembly 200 can be supplied from said fluid supply source (not shown).

[0138] The piping assembly 25 is flowably connected to the valve assembly 200. After circulating within the valve assembly 200, fluid passing through the piping assembly 25 can flow back to the fluid supply source (not shown).

[0139] Piping assembly 25 may include a plurality of pipes. It is understood that fluid prior to heat exchange flows in more than one of the plurality of pipes, and fluid that has exchanged heat with the components of valve assembly 200 flows in more than one of the remaining plurality of pipes.

[0140] The piping assembly 25 is equipped with components such as pumps, which can provide a conveying force for the fluid flowing inside the piping assembly 25.

[0141] 3. Description of the short-circuit regulating devices 400, 500, 600, and 700 according to embodiments of the present invention

[0142] Refer again Figure 2 The modular multilevel converter 1 of this invention includes short-circuit adjustment devices 400, 500, 600, and 700.

[0143] The short-circuit regulating devices 400, 500, 600, and 700 are electrically connected to a plurality of sub-modules 10 disposed in the modular multilevel converter 1. Specifically, the short-circuit regulating devices 400, 500, 600, and 700 are electrically connected to a plurality of capacitor assemblies 100 disposed in the plurality of sub-modules 10.

[0144] If the short-circuit regulating devices 400, 500, 600, and 700 are activated, the plurality of capacitor assemblies 100 are electrically connected to each other. The plurality of capacitor assemblies 100 electrically connected to the short-circuit regulating devices 400, 500, 600, and 700 can be simultaneously short-circuited or disconnected from each other.

[0145] It is understandable that when multiple capacitor components 100 are short-circuited to each other simultaneously, each capacitor component 100 is regulated to the same voltage.

[0146] At this time, short-circuit regulating devices 400, 500, 600, and 700 are always electrically connected to the ground. Therefore, as short-circuit regulating devices 400, 500, 600, and 700 operate, multiple capacitor assemblies 100 can be grounded simultaneously.

[0147] In particular, the short-circuit adjustment devices 400, 500, 600, and 700 of the various embodiments of the present invention move toward the capacitor assembly 100 or in the opposite direction, without sliding along its length.

[0148] Therefore, the contact reliability of the energized blocks 420, 520, 620, 720 and short-circuit blocks 430, 530, 630, 730 installed in the short-circuit regulating devices 400, 500, 600, 700 can be improved.

[0149] As a result, short-circuiting and disconnecting of a plurality of capacitor assemblies 100 that are energizedly connected to the short-circuit regulating devices 400, 500, 600, and 700 can be performed easily and reliably.

[0150] Short-circuit regulating devices 400, 500, 600, and 700 are integrated into frame 20. Specifically, short-circuit regulating devices 400, 500, 600, and 700 are integrated into one of the plurality of support frames 23 disposed adjacent to capacitor assembly 100 in frame 20, i.e., the support frame 23 located on the far side in the illustrated embodiment.

[0151] Short-circuit regulating devices 400, 500, 600, and 700 are energizedly connected to a plurality of capacitor assemblies 100. Therefore, if short-circuit regulating devices 400, 500, 600, and 700 are activated, the plurality of capacitor assemblies 100 can be energizedly connected to each other.

[0152] The short-circuit regulating devices 400, 500, 600, and 700 are electrically connected to the ground. Therefore, a portion of the short-circuit regulating devices 400, 500, 600, and 700, namely the short-circuit blocks 430, 530, 630, and 730, can always remain grounded.

[0153] The following is for reference Figures 3 to 14 The following details the short-circuit regulating devices 400, 500, 600, and 700 according to various embodiments of the present invention.

[0154] (1) Description of a short-circuit regulating device 400 according to an embodiment of the present invention

[0155] Reference Figures 3 to 8 The diagram shows a short-circuit regulating device 400 according to an embodiment of the present invention.

[0156] In the illustrated embodiment, the short-circuit adjustment device 400 includes a support 410, an energized block 420, a short-circuit block 430, an elastic member 440, a shaft member 450, a cam member 460, and a handle member 470.

[0157] The support portion 410 forms the main body of the short-circuit regulating device 400. The support portion 410 is the part where the short-circuit regulating device 400 is combined with the frame 20 (i.e., the support frame 23).

[0158] The support portion 410 is movably coupled to the support frame 23. Specifically, one side (i.e., the rear side) of the support portion 410 is coupled to the support frame 23, and the other side (i.e., the front side) is spaced apart from the first side, which can move in a direction facing the first side or in the opposite direction.

[0159] The support portion 410 extends along the direction of the support frame 23, i.e., in the left-right direction in the illustrated embodiment. The support portion 410 may extend to a length shorter than the extension length of the support frame 23.

[0160] A power-conducting block 420 is provided on the side of the support portion 410 facing the support frame 23, i.e., the rear side in the illustrated embodiment. A short-circuit block 430 is provided on the other side of the support portion 410 opposite to the support frame 23, i.e., the front side in the illustrated embodiment.

[0161] An elastic member 440 is incorporated in the support portion 410. The elastic member 440 applies an elastic force to the plurality of support plates 411, 412 of the support portion 410. As will be described later, the elastic force is formed along the plurality of support plates 411, 412 in a direction toward each other.

[0162] The support portion 410 is combined with a shaft member 450 and a cam member 460. As the shaft member 450 and the cam member 460 rotate, the distance between the plurality of support plates 411, 412 constituting the support portion 410 can be adjusted.

[0163] Thus, the energized blocks 420 and short-circuited blocks 430 respectively disposed on the plurality of support plates 411, 412 can be in contact with each other or separated.

[0164] In the illustrated embodiment, the support portion 410 includes a first support plate 411, a second support plate 412, and a space portion 413.

[0165] The first support plate 411 can be defined as one of a plurality of support plates 411 and 412 having the support portion 410. The first support plate 411 is located in the direction facing the support frame 23, i.e., the rear side in the illustrated embodiment, and is attached to the support frame 23. In one embodiment, the first support plate 411 can be fixedly attached to the support frame 23.

[0166] The first support plate 411 extends along the direction of the support frame 23, i.e., in the left-right direction in the illustrated embodiment. The extension length of the first support plate 411 may be less than or equal to the extension length of the support frame 23. Alternatively, the extension length of the first support plate 411 may be equal to the extension length of the second support plate 412.

[0167] The first support plate 411 may be a plate shape comprising a plurality of faces facing each other. In the illustrated embodiment, the first support plate 411 is formed to have a thickness in the front-to-back direction, with the front side and the rear side facing each other.

[0168] On the front side of the first support plate 411, a plurality of electrically conductive blocks 420 may be spaced apart from each other and arranged side by side along the extending direction of the first support plate 411. The rear side of the first support plate 411 may contact and engage with the support frame 23.

[0169] In addition, the front side of the first support plate 411 faces the rear side of the second support plate 412 across the space portion 413.

[0170] Furthermore, one of the first surface 461 and the second surface 462 of the cam member 460 may contact the front side surface of the first support plate 411. The surface in contact with the first support plate 411 may change as the cam member 460 rotates, which will be described in detail later.

[0171] The first support plate 411 faces the second support plate 412 across the space section 413.

[0172] The second support plate 412 can be defined as another of the plurality of support plates 411, 412 having the support portion 410. The second support plate 412 is located in the opposite direction to the support frame 23, that is, the front side in the illustrated embodiment.

[0173] The second support plate 412 is configured to be movable. Specifically, the second support plate 412 can move in one of the following directions: facing the first support plate 411 (i.e., the rear side) or in the opposite direction to the first support plate 411 (i.e., the front side).

[0174] If the second support plate 412 moves toward the first support plate 411, the energized block 420 and the short-circuited block 430 can come into contact with each other. Alternatively, if the second support plate 412 moves in the opposite direction to the first support plate 411, the energized block 420 and the short-circuited block 430 can be separated from each other.

[0175] The second support plate 412 is configured separately from the first support plate 411. At this time, the distance between the second support plate 412 and the first support plate 411 can change as the second support plate 412 moves.

[0176] The movement is achieved by the shape deformation of the elastic member 440 and the rotation of the shaft member 450 and the cam member 460, which will be described in detail later.

[0177] The second support plate 412 extends along the direction of the support frame 23, that is, in the left-right direction in the illustrated embodiment. It can be understood that this direction is the same as the extension direction of the first support plate 411.

[0178] The extension length of the second support plate 412 can be less than or equal to the extension length of the support frame 23. Alternatively, the extension length of the second support plate 412 can be equal to the extension length of the first support plate 411.

[0179] The second support plate 412 is configured to overlap the first support plate 411 along its thickness direction, i.e., the front-back direction in the illustrated embodiment. In other words, each end of the second support plate 412 in its extension direction overlaps with each end of the first support plate 411 in its extension direction along the front-back direction.

[0180] The second support plate 412 may be a plate shape comprising a plurality of faces facing each other. In the illustrated embodiment, the second support plate 412 is formed to have a thickness in the front-to-back direction, with the front side and the rear side facing each other.

[0181] The rear side of the second support plate 412 can face the front side of the first support plate 411 through the space portion 413. On the rear side of the second support plate 412, a plurality of short-circuit blocks 430 can be spaced apart from each other and arranged side by side along the extending direction of the second support plate 412.

[0182] Additionally, the other surface of the first surface 461 and the second surface 462 of the cam member 460 may contact the rear side surface of the second support plate 412. The surface in contact with the second support plate 412 may change as the cam member 460 rotates, which will be described in detail later.

[0183] Elastic members 440 are respectively attached to the first support plate 411 and the second support plate 412. In the illustrated embodiment, the ends of the elastic members 440 are attached to the upper edge of the first support plate 411 and the upper edge of the second support plate 412.

[0184] The elastic member 440 applies a restoring force in the direction of reducing the distance between the first support plate 411 and the second support plate 412. In other words, the elastic member 440 applies an elastic force to the second support plate 412 in the direction of the first support plate 411.

[0185] The distance between the first support plate 411 and the second support plate 412 can be adjusted between a first distance D1 and a second distance D2.

[0186] That is, the maximum distance between the first support plate 411 and the second support plate 412 can be defined as the first distance D1. In addition, the minimum distance between the first support plate 411 and the second support plate 412 can be defined as the second distance D2.

[0187] If the first support plate 411 and the second support plate 412 are separated by a first distance D1, then the energized block 420 and the short-circuited block 430 are separated from each other. Alternatively, if the first support plate 411 and the second support plate 412 are separated by a second distance D2, then the energized block 420 and the short-circuited block 430 are in contact with each other.

[0188] The first distance D1 and the second distance D2 can be determined based on the shapes of the energized block 420, the short-circuited block 430, and the cam member 460. This will be explained in detail later.

[0189] A space 413 is formed between the second support plate 412 and the first support plate 411.

[0190] The space 413 is a space formed by separating the first support plate 411 and the second support plate 412 along their thickness direction, i.e., the front-to-back direction in the illustrated embodiment. That is, the space 413 is the space formed between the first support plate 411 and the second support plate 412. The first support plate 411 and the second support plate 412 are arranged facing each other across the space 413.

[0191] The space portion 413 extends in the direction of the first support plate 411 and the second support plate 412, that is, in the left-right direction in the illustrated embodiment. In addition, the space portion 413 is formed to have a width in the thickness direction of the first support plate 411 and the second support plate 412, that is, in the front-back direction in the illustrated embodiment.

[0192] The length of the width of the space portion 413 can be changed. That is, if the second support plate 412 moves toward the first support plate 411, the length of the width of the space portion 413 decreases. Conversely, if the second support plate 412 moves in the opposite direction to the first support plate 411, the length of the width of the space portion 413 increases.

[0193] A plurality of energized blocks 420 and a plurality of short-circuit blocks 430 are provided in the space section 413. As the width and length of the space section 413 change, the plurality of energized blocks 420 and the plurality of short-circuit blocks 430 can be in contact with each other or separated.

[0194] A shaft member 450 and a cam member 460 are provided in the space portion 413. The shaft member 450 and the cam member 460 can rotate while being housed in the space portion 413. In the illustrated embodiment, the shaft member 450 and the cam member 460 are arranged adjacent to each end of the space portion 413 in the direction of extension, that is, each end in the left-right direction in the illustrated embodiment.

[0195] The energized block 420 is electrically connected to the container assembly 100 of the submodule 10. As described above, there can be a plurality of submodules 10. Consequently, there are also a plurality of energized blocks 420, each of which can be electrically connected to a plurality of submodules 10.

[0196] Therefore, if a plurality of energized blocks 420 and a plurality of short-circuited blocks 430 are simultaneously in contact, the plurality of capacitor assemblies 100 can be simultaneously short-circuited and grounded. The energized blocks 420 can be formed of conductive material.

[0197] The energized block 420 is attached to the support portion 410. Specifically, the energized block 420 is attached to the side of the first support plate 411 facing the second support plate 412 or the space portion 413, i.e., the front side in the illustrated embodiment. That is, the energized block 420 is accommodated in the space portion 413.

[0198] The energized block 420 can be shaped to maximize the area of ​​the side facing the short-circuit block 430, i.e., the front side in the illustrated embodiment. This improves the contact reliability between the energized block 420 and the short-circuit block 430. In the illustrated embodiment, the energized block 420 is a flat, rectangular prism shape extending laterally along the direction of the first support plate 411, i.e., in the illustrated embodiment.

[0199] There may be a plurality of energized blocks 420. The plurality of energized blocks 420 may be arranged spaced apart from each other along the direction extending from the first support plate 411. In the illustrated embodiment, there are six energized blocks 420, spaced apart from each other and arranged side by side in the left-right direction.

[0200] The number and configuration of the powered blocks 420 can be changed depending on the number and configuration of the sub-modules 10. That is, it can be understood that the illustrated embodiment is a case where there are six sub-modules 10 arranged spaced apart from each other in the left-right direction.

[0201] The energized block 420 can be in contact with or separated from the short-circuited block 430. If the energized block 420 is in contact with the short-circuited block 430, then the plurality of capacitor assemblies 100 can be simultaneously short-circuited and grounded.

[0202] In the illustrated embodiment, the energized block 420 includes a conductor member 421.

[0203] The conductor 421 electrically connects the energized block 420 and the capacitor assembly 100. Using the conductor 421, the capacitor assembly 100 and the energized block 420 can maintain the same voltage.

[0204] There may be a plurality of conductor members 421. The plurality of conductor members 421 may be electrically connected to a plurality of energized blocks 420 and a plurality of capacitor assemblies 100 respectively.

[0205] In the illustrated embodiment, there are six wire members 421, which are electrically connected to six energized blocks 420 respectively.

[0206] The short-circuit block 430 is electrically connected to the external ground. That is, the short-circuit block 430 remains grounded. This connection can be achieved by a conductor component (not shown) or the like.

[0207] The short-circuit block 430 is attached to the support portion 410. Specifically, the short-circuit block 430 is attached to the side of the second support plate 412 facing the first support plate 411 or the space portion 413, i.e., the rear side in the illustrated embodiment. That is, the short-circuit block 430 is accommodated in the space portion 413.

[0208] The short-circuit block 430 can be shaped to maximize the area of ​​the side facing the energized block 420, i.e., the rear side in the illustrated embodiment. This improves the contact reliability between the short-circuit block 430 and the energized block 420. In the illustrated embodiment, the short-circuit block 430 is a quadrangular prism shape with a flat rear side extending along the direction of the second support plate 412, i.e., extending in the left-right direction in the illustrated embodiment.

[0209] In one embodiment, the shape of the face of the short-circuit block 430 may be the same as the shape of the face of the energized block 420 facing the short-circuit block 430.

[0210] Therefore, the surfaces facing each other of the short-circuit block 430 and the energized block 420 can make surface contact. This improves the contact reliability between the short-circuit block 430 and the energized block 420.

[0211] There may be a plurality of short-circuit blocks 430. The plurality of short-circuit blocks 430 may be arranged spaced apart from each other along the direction of extension of the second support plate 412. In the illustrated embodiment, there are six short-circuit blocks 430, spaced apart from each other and arranged side by side in the left-right direction.

[0212] The short-circuit block 430 can be configured to overlap with the energized block 420 along its thickness direction, i.e., the front-to-back direction in the illustrated embodiment. Therefore, if the second support plate 412 and the short-circuit block 430 thereto move toward the first support plate 411, the short-circuit block 430 and the energized block 420 can come into contact with each other.

[0213] The number and configuration of short-circuit blocks 430 can be changed according to the number and configuration of energized blocks 420.

[0214] The short-circuit block 430 can be in contact with or separated from the energized block 420. If the short-circuit block 430 and the energized block 420 are in contact, then the plurality of capacitor assemblies 100 can be short-circuited and grounded simultaneously.

[0215] The energized block 420 and the short-circuited block 430 can be formed to have a predetermined thickness along their thickness direction, i.e., the front-to-back direction in the illustrated embodiment.

[0216] Specifically, the sum of the thickness of the energized block 420 and the thickness of the short-circuited block 430 can be less than the first distance D1 and greater than the second distance D2.

[0217] Therefore, if the cam member 460 is rotated and the distance between the first support plate 411 and the second support plate 412 is adjusted to a first distance D1, the energized block 420 and the short-circuited block 430 are separated from each other.

[0218] Additionally, if the cam member 460 is rotated and the distance between the first support plate 411 and the second support plate 412 is adjusted to a second distance D2, then the energized block 420 and the short-circuited block 430 will come into contact with each other.

[0219] The process will be described in detail later.

[0220] The elastic member 440 provides a force for moving the second support plate 412 and the short-circuit block 430 coupled thereto toward the first support plate 411 and the energized block 420 coupled thereto.

[0221] The elastic member 440 stores restoring force by deforming its shape and then transmits the stored restoring force to the support 410.

[0222] As described above, the first support plate 411 is fixedly attached to the support frame 23, so it can be understood that the second support plate 412 moves using the restoring force provided by the elastic member 440.

[0223] That is, the elastic member 440 applies a restoring force to the support portion 410 in the direction in which the energized block 420 and the short-circuited block 430 move toward each other. Therefore, it can also be said that the elastic member 440 elastically supports the first support plate 411 and the second support plate 412.

[0224] The elastic member 440 is attached to the support portion 410. Specifically, one side of the elastic member 440 is attached to the first support plate 411, and the other side is attached to the second support plate 412. Therefore, the restoring force stored and provided by the elastic member 440 can be determined by the distance between the first support plate 411 and the second support plate 412 or the width of the space portion 413 formed therebetween.

[0225] The elastic member 440 can be any form that stores restoring force through shape deformation and is capable of transferring the stored restoring force to other members. In the illustrated embodiment, the elastic member 440 is a coil spring extending in the front-rear direction.

[0226] There may be a plurality of elastic members 440. The plurality of elastic members 440 may be coupled to the first support plate 411 and the second support plate 412 at different positions.

[0227] In the illustrated embodiment, the elastic member 440 includes: a first elastic member 440a, which is respectively coupled to the upper edges of the first support plate 411 and the second support plate 412; and a second elastic member 440b, which is respectively coupled to the lower edges of the first support plate 411 and the second support plate 412.

[0228] In addition, there are multiple first elastic members 440a and second elastic members 440b, which can be coupled to the first support plate 411 and the second support plate 412 at different positions.

[0229] In the illustrated embodiment, there are six first elastic members 440a and six second elastic members 440b, which are spaced apart from each other and arranged in parallel along the direction of the first support plate 411 and the second support plate 412, i.e., in the left-right direction.

[0230] At this time, the first elastic member 440a and the second elastic member 440b can be configured adjacent to the energized block 420 and the short-circuited block 430.

[0231] In the illustrated embodiment, the first elastic member 440a is located above the energized block 420 and the short-circuited block 430. Additionally, the second elastic member 440b is located below the energized block 420 and the short-circuited block 430.

[0232] That is, the elastic member 440 is arranged to overlap with the energized block 420 and the short-circuit block 430 in the vertical direction. In one embodiment, the elastic member 440 may be located in the middle part of the left-right direction in each extending direction of the energized block 420 and the short-circuit block 430, i.e., in the illustrated embodiment.

[0233] Therefore, the restoring force stored in the elastic member 440 can be transmitted to the positions in the first support plate 411 and the second support plate 412 adjacent to the energized block 420 and the short-circuited block 430. As a result, the contact reliability of the energized block 420 and the short-circuited block 430 can be improved.

[0234] The magnitude of the restoring force stored in the elastic member 440 can be adjusted according to the distance between the first support plate 411 and the second support plate 412 or the width direction length (i.e., the front-to-back direction length) of the space portion 413.

[0235] As described later, the cam member 460 is rotatably accommodated in the space 413 and contacts the first support plate 411 and the second support plate 412 respectively. In addition, the cam member 460 is formed such that the length of its cross-section in the left-right direction and the length in the front-back direction are different from each other.

[0236] Therefore, as the cam member 460 rotates, the distance between the first support plate 411 and the second support plate 412 and the length of the elastic member 440 change. As a result, the magnitude of the restoring force stored in the elastic member 440 can be changed.

[0237] exist Figures 3 to 5 In the illustrated embodiment, the energized block 420 and the short-circuited block 430 are separated from each other using the cam member 460. At this time, the distance between the first support plate 411 and the second support plate 412 can be defined as a first distance D1.

[0238] It is understood that in the stated state, the elastic member 440 extends and stores restoring force due to shape deformation.

[0239] exist Figures 6 to 8 In the illustrated embodiment, the energized block 420 and the short-circuited block 430 are in contact with each other using the cam member 460. At this time, the distance between the first support plate 411 and the second support plate 412 can be defined as a second distance D2. This second distance D2 is shorter than the first distance D1.

[0240] It is understood that, in the stated state, the elastic member 440 is in a storage ratio of Figures 3 to 5 The state shown represents a smaller restoring force.

[0241] At this point, it can be understood that the direction of the restoring force stored in the elastic member 440 in each state is the direction in which the second support plate 412 is pulled toward the first support plate 411, that is, the direction toward the rear.

[0242] A fixing part 441 is provided on the elastic member 440. The fixing part 441 connects the elastic member 440 to the first support plate 411 and the second support plate 412 respectively.

[0243] There may be a plurality of fixing parts 441. The plurality of fixing parts 441 are located at different positions to attach the elastic member 440 to the support part 410. In the illustrated embodiment, the fixing parts 441 are attached to the elastic member 440 on the upper and lower sides of the first support plate 411 and the upper and lower sides of the second support plate 412, respectively.

[0244] The fixing portions 441 may have a number corresponding to the number of elastic members 440. Furthermore, the fixing portions 441 may be individually coupled to a plurality of elastic members 440. In the illustrated embodiment, six sets of fixing portions 441 (i.e., four fixing portions) are provided, spaced apart from each other in the left-right direction.

[0245] The shaft member 450 is combined with the cam member 460, thereby serving as the central axis for the rotation of the cam member 460. In addition, a handle member 470 is combined with the shaft member 450, and the shaft member 450 can rotate together with the handle member 470 when the handle member 470 is rotated.

[0246] The shaft member 450 is coupled to the support portion 410. Specifically, the shaft member 450 is rotatably accommodated in the space portion 413. The outer side of the shaft member 450 may be partially surrounded by the first support plate 411 and the second support plate 412.

[0247] The shaft member 450 is disposed separately from the first support plate 411 and the second support plate 412. A cam member 460 is provided in the space formed between the shaft member 450 and the first support plate 411 and the second support plate 412.

[0248] The shaft member 450 extends in one direction, namely the vertical direction in the illustrated embodiment. Each end of the shaft member 450 in the extending direction is rotatably connected to the support frame 23. That is, the shaft member 450 is supported by the support frame 23 to be rotatable.

[0249] In the illustrated embodiment, the shaft member 450 is a cylindrical shape with a circular cross-section extending in the vertical direction. The shaft member 450 can be any shape that is rotatably accommodated in the space 413 and combined with the cam member 460 and the handle member 470 respectively, and can rotate together.

[0250] There may be a plurality of shaft members 450. The plurality of shaft members 450 can be rotatably accommodated in the space 413 at different positions relative to each other. In the illustrated embodiment, the plurality of shaft members 450 are arranged adjacent to each other at their ends in the direction in which the support portion 410 extends, i.e., in the left-right direction.

[0251] That is, the shaft member 450 includes a first shaft 451 disposed adjacent to the left end of the support portion 410 and a second shaft 452 disposed adjacent to the right end of the support portion 410.

[0252] The shaft member 450 is connected to the cam member 460. If the shaft member 450 rotates, the cam member 460 can also rotate. In the illustrated embodiment, the shaft member 450 is connected through a through hole formed inside the cam member 460.

[0253] The shaft member 450 is connected to the handle member 470. If the handle member 470 is rotated, the shaft member 450 can also rotate. In the illustrated embodiment, the shaft member 450 is connected through a through hole formed inside the handle member 470.

[0254] The cam member 460 rotates together with the shaft member 450, thereby adjusting the distance between the first support plate 411 and the second support plate 412. Utilizing the rotation of the cam member 460 and the elastic member 440, the energized block 420 and the short-circuited block 430 can be brought into contact or separated.

[0255] Cam member 460 is coupled to shaft member 450. Cam member 460 can rotate together with shaft member 450. In the illustrated embodiment, shaft member 450 is connected through a through hole formed inside cam member 460.

[0256] The cam member 460 is rotatably housed in the space 413. The cam member 460 can contact the first support plate 411 and the second support plate 412 respectively.

[0257] At this time, the elastic member 440 applies a restoring force to the second support plate 412 in the direction of the first support plate 411, so the outer side of the cam member 460 is pressed by the first support plate 411 and the second support plate 412 respectively.

[0258] In addition, the cam member 460 can be formed such that the length of its cross section in one direction is different from the length in the other direction.

[0259] That is, the cross-section of the cam component 460 can be formed such that, in the longitudinal direction ( Figure 3 In the illustrated embodiment, the length in the front-to-back direction is longer than the length in the short direction. Figure 3 The length in the left-right direction in the illustrated embodiment. Therefore, if the cam member 460 rotates, the distance between the first support plate 411 and the second support plate 412 can be adjusted according to the direction of the cross-section of the cam member 460.

[0260] There may be a plurality of cam members 460. The plurality of cam members 460 may be rotatably accommodated in the space 413 at different positions relative to each other. In addition, the plurality of cam members 460 may contact the first support plate 411 and the second support plate 412 at different positions relative to each other.

[0261] In the illustrated embodiment, the cam member 460 includes a first cam member 460a disposed adjacent to the left end of the support portion 410 and a second cam member 460b disposed adjacent to the right end of the support portion 410.

[0262] The number and position of the cam members 460 can vary depending on the number and position of the shaft members 450.

[0263] Because of the plurality of cam components 460, the distance adjustment between the first support plate 411 and the second support plate 412 can be made easier.

[0264] Furthermore, since the distance between the first support plate 411 and the second support plate 412 is adjusted at multiple positions, the distance between the first support plate 411 and the second support plate 412 can remain constant along the extension direction of the support portion 410.

[0265] In the illustrated embodiment, the cam member 460 is formed as an ellipse whose cross-section includes a major axis and a minor axis. Therefore, in the illustrated embodiment, the cam member 460 includes a first surface 461 and a second surface 462 having curvatures different from each other.

[0266] The first surface 461 can be defined as the outer surface of the cam member 460 with the minor axis of the cam member 460 as the string. The first surface 461 forms part of the outer peripheral surface of the cam member 460.

[0267] The first surface 461 can be formed in multiples. That is, the portion with the minor axis of the cam member 460 as its diameter can be symmetrically arranged with reference to the center of the cross-section of the cam member 460. Figure 3 In the embodiment shown, the first surface 461 forms the outer peripheral surfaces of the front and rear sides of the cam member 460.

[0268] The first surface 461 is formed as a curved surface with a specified curvature. The curvature of the first surface 461 can be greater than the curvature of the second surface 462. That is, the first surface 461 can be curved more steeply than the second surface 462.

[0269] When the cam member 460 rotates so that the first surface 461 contacts the first support plate 411 and the second support plate 412 respectively, the distance between the first support plate 411 and the second support plate 412 becomes the maximum.

[0270] That is, in this state, the distance between the first support plate 411 and the second support plate 412 is a first distance D1. Thus, the energized block 420 and the short-circuited block 430 are separated from each other. It can be understood that in this state, the magnitude of the restoring force stored in the elastic member 440 reaches its maximum.

[0271] The first side 461 and the second side 462 are continuous.

[0272] The second surface 462 can be defined as the outer surface of the cam member 460 with its major axis as its diameter. The second surface 462 forms the remainder of the outer peripheral surface of the cam member 460.

[0273] The second surface 462 can be formed in multiples. That is, the portion with the major axis of the cam member 460 as the string can be symmetrically arranged with reference to the center of the cross-section of the cam member 460. Figure 3 In the embodiment shown, the second surface 462 forms the outer peripheral surfaces of the left and right sides of the cam member 460.

[0274] The second surface 462 is formed as a curved surface with a specified curvature. The curvature of the second surface 462 can be less than the curvature of the first surface 461. That is, the second surface 462 can be curved more gently than the first surface 461.

[0275] When the cam member 460 rotates so that the second surface 462 contacts the first support plate 411 and the second support plate 412 respectively, the distance between the first support plate 411 and the second support plate 412 becomes the minimum.

[0276] That is, in this state, the distance between the first support plate 411 and the second support plate 412 is a second distance D2. Thus, the energized block 420 and the short-circuited block 430 are in contact with each other. It can be understood that in this state, the magnitude of the restoring force stored in the elastic member 440 becomes minimal.

[0277] The first surface 461 and the second surface 462 are continuously and alternately arranged along the outer periphery of the cam member 460. In addition, one of the first surface 461 and the second surface 462 is in contact with the first support plate 411 and the second support plate 412, respectively.

[0278] The handle component 470 is engaged with the shaft component 450 and rotates together. The handle component 470 can be operated automatically or manually.

[0279] The handle member 470 can rotate a predetermined angle in either a clockwise or counterclockwise direction. Consequently, the shaft member 450 connected to the handle member 470 and the cam member 460 connected to the shaft member 450 can also rotate a predetermined angle in either a clockwise or counterclockwise direction.

[0280] At this time, the specified angle is preferably determined such that as the handle component 470 rotates, the first surface 461 and the second surface 462 of the cam component 460 can alternately contact the first support plate 411 and the second support plate 412.

[0281] As described above, in one embodiment, the cam member 460 may be formed with an elliptical cross-section having a major axis and a minor axis. In the above embodiment, the specified angle of rotation of the handle member 470 may be a right angle.

[0282] The handle member 470 may be provided with a component (not shown) for limiting rotation. This component (not shown) can restrict the handle member 470 to rotate only by the specified angle. For example, the component (not shown) may be in the form of a pin, clip, or wedge respectively provided at the limiting points of the rotation angle of the handle member 470.

[0283] The handle component 470 may include: a first portion through which the shaft component 450 passes; and a second portion continuous with the first portion and extending in the opposite direction to the first portion.

[0284] That is, it can be understood that the first part is the part where the handle component 470 and the shaft component 450 are combined, and the second part is the part that is held and rotated by the operator.

[0285] There may be a plurality of handle members 470. The plurality of handle members 470 may be coupled to different shaft members 450. In the illustrated embodiment, the handle members 470 include a first handle member 471 coupled to a first shaft 451 and a second handle member 472 coupled to a second shaft 452.

[0286] Therefore, the handle member 470 can be rotated in a plurality of positions, and the cam member 460 can be rotated in a plurality of positions.

[0287] The handle component 470 can be rotated automatically or manually. In the illustrated embodiment, the handle component 470 is designed for manual operation by an operator.

[0288] Alternatively, additional linkage components (not shown) may be included to connect the plurality of handle components 470 to each other. In the above embodiment, the rotation of the plurality of handle components 470 can be synchronized.

[0289] The process of simultaneously short-circuiting or disconnecting multiple capacitor assemblies 100 by rotating the handle component 470 will be described in detail later.

[0290] (2) Description of another embodiment of the short-circuit regulating device 500 of the present invention

[0291] Reference Figure 9 and Figure 10 This illustrates a short-circuit regulating device 500 according to another embodiment of the present invention.

[0292] In the illustrated embodiment, the short-circuit adjustment device 500 includes a support 510, an energized block 520, a short-circuit block 530, an elastic member 540, a shaft member 550, a cam member 560, and a handle member 570.

[0293] Compared with the short-circuit adjusting device 400 of the above embodiment, the short-circuit adjusting device 500 of this embodiment differs in the structure and shape of the elastic member 540.

[0294] That is, the support portion 510, energized block 520, short-circuit block 530, shaft member 550, cam member 560 and handle member 570 of the short-circuit adjustment device 500 in this embodiment are the same in structure, shape and function as the support portion 410, energized block 420, short-circuit block 430, shaft member 450, cam member 460 and handle member 470 in the above embodiment.

[0295] Therefore, in the following description, the short-circuit adjustment device 500 of this embodiment will be described with respect to the elastic member 540.

[0296] The elastic member 540 provides a force for moving the second support plate 512 and the short-circuit block 530 coupled thereto toward the first support plate 511 and the energized block 520 coupled thereto.

[0297] The elastic member 540 stores restoring force by deforming its shape and then transmits the stored restoring force to the support 510.

[0298] As described above, the first support plate 511 is fixedly attached to the support frame 23, so it can be understood that the second support plate 512 moves using the restoring force provided by the elastic member 540.

[0299] That is, the elastic member 540 applies a restoring force to the support portion 510 in the direction in which the energized block 520 and the short-circuited block 530 move toward each other. Therefore, it can also be understood that the elastic member 540 elastically supports the first support plate 511 and the second support plate 512.

[0300] The elastic member 540 is attached to the support portion 510. Specifically, one side of the elastic member 540 is attached to the first support plate 511, and the other side is attached to the second support plate 512. Therefore, the restoring force stored and provided by the elastic member 540 can be determined by the distance between the first support plate 511 and the second support plate 512 or the width of the space portion 513 formed therebetween.

[0301] In the illustrated embodiment, the elastic member 540 is respectively coupled to the respective facing surfaces of the first support plate 511 and the second support plate 512, namely the front side of the first support plate 511 and the rear side of the second support plate 512. In this embodiment, the elastic member 540 is accommodated in the space portion 513.

[0302] The elastic member 540 can be any form that stores restoring force through shape deformation and is capable of transferring the stored restoring force to other members. In the illustrated embodiment, the elastic member 540 is a coil spring extending in the front-rear direction.

[0303] There may be a plurality of elastic members 540. The plurality of elastic members 540 may be coupled to the first support plate 511 and the second support plate 512 at different positions. The plurality of elastic members 540 are spaced apart from each other along the direction in which the support portion 510 extends.

[0304] In the illustrated embodiment, there are five elastic members 540, each disposed between a plurality of energized blocks 520. In other words, there are five elastic members 540, each disposed between a plurality of short-circuit blocks 530.

[0305] That is, the elastic member 540 is configured to surround the energized block 520 and the short-circuited block 530 on both sides. In one embodiment, the elastic member 540 may be located in the middle part of the space formed by the plurality of energized blocks 520 or the plurality of short-circuited blocks 530 being spaced apart from each other.

[0306] Therefore, the restoring force stored in the elastic member 540 can be transmitted to the positions in the first support plate 511 and the second support plate 512 adjacent to the energized block 520 and the short-circuited block 530. As a result, the contact reliability of the energized block 520 and the short-circuited block 530 can be improved.

[0307] The magnitude of the restoring force stored in the elastic member 540 can be adjusted according to the distance between the first support plate 511 and the second support plate 512 or the width direction length (i.e., front-to-back direction length) of the space portion 513.

[0308] As described above, the cam member 560 is rotatably accommodated in the space portion 513 and contacts the first support plate 511 and the second support plate 512 respectively. In addition, the cam member 560 is formed such that the length of its cross-section in the left-right direction and the length in the front-back direction are different from each other.

[0309] Therefore, as the cam member 560 rotates, the distance between the first support plate 511 and the second support plate 512 and the length of the elastic member 540 change. As a result, the magnitude of the restoring force stored in the elastic member 540 can be changed.

[0310] exist Figure 9 and Figure 10 In the illustrated embodiment, the energized block 520 and the short-circuited block 530 are separated from each other using the cam member 560. At this time, the distance between the first support plate 511 and the second support plate 512 can be defined as a first distance D1.

[0311] It is understood that in the stated state, the elastic member 540 extends and stores restoring force due to shape deformation.

[0312] Although not illustrated, as described above, when the energized block 520 and the short-circuited block 530 are in contact with each other due to the cam member 560, the distance between the first support plate 511 and the second support plate 512 can be defined as a second distance D2. In this case, the second distance D2 is shorter than the first distance D1.

[0313] It is understood that, in the stated state, the storage ratio of the elastic member 540 is... Figure 9 and Figure 10 The state shown has a smaller restoring force.

[0314] Furthermore, in this state, the length of the elastic member 540, i.e., the length in the front-to-back direction, is formed to be less than or equal to the sum of the thicknesses of the energized block 520 and the short-circuited block 530. Therefore, the position of the elastic member 540 does not affect the contact between the energized block 520 and the short-circuited block 530.

[0315] At this point, it can be understood that the direction of the restoring force stored in the elastic member 540 in each state is the direction in which the second support plate 512 is pulled toward the first support plate 511, that is, the direction toward the rear.

[0316] (3) Description of another embodiment of the short-circuit regulating device 600 of the present invention

[0317] Reference Figure 11 and Figure 12 This illustrates a short-circuit regulating device 600 according to yet another embodiment of the present invention.

[0318] In the illustrated embodiment, the short-circuit adjustment device 600 includes a support 610, an energized block 620, a short-circuit block 630, an elastic member 640, a shaft member 650, a cam member 660, and a handle member 670.

[0319] Compared with the short-circuit adjusting devices 400 and 500 of the above embodiments, the short-circuit adjusting device 600 of this embodiment differs in the structure and shape of the elastic member 640.

[0320] That is, the support part 610, the energized block 620, the short-circuit block 630, the shaft member 650, the cam member 660, and the handle member 670 of the short-circuit adjustment device 600 in this embodiment are the same in structure, shape, and function as the support part 410, 510, the energized block 420, 520, the short-circuit block 430, 530, the shaft member 450, 550, the cam member 460, 560, and the handle member 470, 570 in the above embodiment.

[0321] Therefore, in the following description, the short-circuit adjustment device 600 of this embodiment will be described with respect to the elastic member 640.

[0322] The elastic member 640 provides a force for moving the second support plate 612 and the short-circuit block 630 coupled thereto toward the first support plate 611 and the energized block 620 coupled thereto.

[0323] The elastic member 640 stores restoring force by deforming its shape and then transmits the stored restoring force to the support 610.

[0324] As described above, the first support plate 611 is fixedly attached to the support frame 23, so it can be understood that the second support plate 612 moves using the restoring force provided by the elastic member 640.

[0325] That is, the elastic member 640 applies a restoring force to the support portion 610 in the direction in which the energized block 620 and the short-circuited block 630 move toward each other. Therefore, it can also be understood that the elastic member 640 elastically supports the first support plate 611 and the second support plate 612.

[0326] The elastic member 640 is attached to the support portion 610. Specifically, the elastic member 640 is attached in a manner that surrounds the first support plate 611 and the second support plate 612. Therefore, the restoring force stored and provided by the elastic member 640 can be determined by the distance between the first support plate 611 and the second support plate 612 or the width of the space portion 613 formed therebetween.

[0327] In the illustrated embodiment, the elastic member 640 is formed to surround the upper and lower sides of the space portion 613, the rear side of the first support plate 611, and the front side of the second support plate 612.

[0328] In the above embodiments, the elastic member 640 can be in the form of a band formed from a stretchable elastic material such as rubber or latex.

[0329] There may be a plurality of elastic members 640. The plurality of elastic members 640 may be coupled to the support portion 610 at different positions. The plurality of elastic members 640 are spaced apart from each other along the direction in which the support portion 610 extends.

[0330] In the illustrated embodiment, there are six elastic members 640, which are spaced apart from each other and arranged in parallel along the direction of the first support plate 611 and the second support plate 612, i.e., in the left-right direction.

[0331] At this time, the elastic member 640 can be arranged adjacent to the energized block 620 and the short-circuited block 630.

[0332] In the illustrated embodiment, the elastic member 640 may be configured to surround the upper and lower sides of the energized block 620 and the short-circuited block 630.

[0333] That is, the elastic member 640 is arranged to overlap with the energized block 620 and the short-circuit block 630 in the vertical direction. In one embodiment, the elastic member 640 may be located in the middle part of the left-right direction in each of the extending directions of the energized block 620 and the short-circuit block 630, i.e., in the illustrated embodiment.

[0334] Therefore, the restoring force stored in the elastic member 640 can be transmitted to the positions in the first support plate 611 and the second support plate 612 adjacent to the energized block 620 and the short-circuited block 630. As a result, the contact reliability of the energized block 620 and the short-circuited block 630 can be improved.

[0335] The magnitude of the restoring force stored in the elastic member 640 can be adjusted according to the distance between the first support plate 611 and the second support plate 612 or the width direction length (i.e., front-to-back direction length) of the space portion 613.

[0336] As described above, the cam member 660 is rotatably accommodated in the space 613 and contacts the first support plate 611 and the second support plate 612 respectively. In addition, the cam member 660 is formed such that the length of its cross-section in the left-right direction and the length in the front-back direction are different from each other.

[0337] Therefore, as the cam member 660 rotates, the distance between the first support plate 611 and the second support plate 612 and the length of the elastic member 640 change. As a result, the magnitude of the restoring force stored in the elastic member 640 can be changed.

[0338] exist Figure 11 and Figure 12 In the illustrated embodiment, the energized block 620 and the short-circuited block 630 are separated from each other using the cam member 660. At this time, the distance between the first support plate 611 and the second support plate 612 can be defined as a first distance D1.

[0339] It is understood that in the stated state, the elastic member 640 extends and stores restoring force due to shape deformation.

[0340] Although not illustrated, as described above, when the energized block 620 and the short-circuited block 630 are in contact with each other due to the cam member 660, the distance between the first support plate 611 and the second support plate 612 can be defined as a second distance D2. In this case, the second distance D2 is shorter than the first distance D1.

[0341] It is understood that, in the stated state, the elastic member 640 is in a storage ratio of Figure 11 and Figure 12 The state shown has a smaller restoring force.

[0342] At this point, it can be understood that the direction of the restoring force stored in the elastic member 640 in each state is the direction in which the second support plate 612 is pulled toward the first support plate 611, that is, the direction toward the rear.

[0343] (4) Description of another embodiment of the short-circuit regulating device 700 of the present invention

[0344] Reference Figures 13 to 14 This illustrates a short-circuit regulating device 700 according to yet another embodiment of the present invention.

[0345] In the illustrated embodiment, the short-circuit adjustment device 700 includes a support 710, an energized block 720, a short-circuit block 730, an elastic member 740, a shaft member 750, a cam member 760, and a handle member 770.

[0346] Compared with the short-circuit adjusting devices 400, 500, and 600 of the above embodiments, the short-circuit adjusting device 700 of this embodiment differs in the structure and shape of the elastic member 740.

[0347] That is, the support portion 710, the energized block 720, the short-circuit block 730, the shaft member 750, the cam member 760, and the handle member 770 of the short-circuit adjustment device 700 in this embodiment are the same in structure, shape, and function as the support portion 410, 510, 610, the energized block 420, 520, 620, the short-circuit block 430, 530, 630, the shaft member 450, 550, 650, the cam member 460, 560, 660, and the handle member 470, 570, 670 in the above embodiment.

[0348] Therefore, in the following description, the short-circuit adjustment device 700 of this embodiment will be described with respect to the elastic member 740.

[0349] The elastic member 740 provides a force for moving the second support plate 712 and the short-circuit block 730 coupled thereto toward the first support plate 711 and the energized block 720 coupled thereto.

[0350] The elastic member 740 stores restoring force by deforming its shape and transmits the stored restoring force to the support 710.

[0351] As described above, the first support plate 711 is fixedly attached to the support frame 23, so it can be understood that the second support plate 712 moves using the restoring force provided by the elastic member 740.

[0352] That is, the elastic member 740 applies a restoring force to the support portion 710 in the direction in which the energized block 720 and the short-circuited block 730 move toward each other. Therefore, it can also be understood that the elastic member 740 elastically supports the first support plate 711 and the second support plate 712.

[0353] The elastic member 740 is attached to the support portion 710. Specifically, one side of the elastic member 740 is attached to the first support plate 711, and the other side is attached to the second support plate 712. Therefore, the restoring force stored and provided by the elastic member 740 can be determined by the distance between the first support plate 711 and the second support plate 712 or the width of the space portion 713 formed therebetween.

[0354] In the illustrated embodiment, the elastic member 740 is respectively attached to the faces of the first support plate 711 and the second support plate 712 facing each other, namely the front side of the first support plate 711 and the rear side of the second support plate 712.

[0355] The elastic member 740 can be any form that stores restoring force by deforming its shape and can transfer the stored restoring force to other members. In the illustrated embodiment, the elastic member 740 is a torsion spring whose rear end is attached to the first support plate 711, whose front end is attached to the second support plate 712, and which is housed in the space 713.

[0356] There may be a plurality of elastic members 740. The plurality of elastic members 740 may be coupled to the first support plate 711 and the second support plate 712 at different positions. The plurality of elastic members 740 are spaced apart from each other along the direction in which the support portion 710 extends.

[0357] In the illustrated embodiment, there are five elastic members 740, each located between a plurality of energized blocks 720. In other words, there are five elastic members 740, each located between a plurality of short-circuited blocks 730.

[0358] That is, the elastic member 740 is configured to surround the energized block 720 and the short-circuited block 730 on both sides. In one embodiment, the elastic member 740 may be located in the middle part of the space formed by the plurality of energized blocks 720 or the plurality of short-circuited blocks 730 being spaced apart from each other.

[0359] Therefore, the restoring force stored in the elastic member 740 can also be transmitted to the positions in the first support plate 711 and the second support plate 712 adjacent to the energized block 720 and the short-circuited block 730. As a result, the contact reliability of the energized block 720 and the short-circuited block 730 can be improved.

[0360] The magnitude of the restoring force stored in the elastic member 740 can be adjusted according to the distance between the first support plate 711 and the second support plate 712 or the width direction length (i.e., the front-to-back direction length) of the space portion 713.

[0361] As described above, the cam member 760 is rotatably accommodated in the space 713 and contacts the first support plate 711 and the second support plate 712 respectively. In addition, the cam member 760 is formed such that the length of its cross-section in the left-right direction and the length in the front-back direction are different from each other.

[0362] Therefore, as the cam member 760 rotates, the distance between the first support plate 711 and the second support plate 712 and the length of the elastic member 740 change. As a result, the magnitude of the restoring force stored in the elastic member 740 can be changed.

[0363] exist Figure 13 and Figure 14 In the illustrated embodiment, the energized block 720 and the short-circuited block 730 are separated from each other using the cam member 760. At this time, the distance between the first support plate 711 and the second support plate 712 can be defined as a first distance D1.

[0364] It is understood that in the stated state, the elastic member 740 extends and stores restoring force due to shape deformation.

[0365] Although not illustrated, as described above, when the energized block 720 and the short-circuited block 730 are in contact with each other due to the cam member 760, the distance between the first support plate 711 and the second support plate 712 can be defined as a second distance D2. In this case, the second distance D2 is shorter than the first distance D1.

[0366] It is understood that, in the stated state, the elastic member 740 is in a storage ratio of Figure 13 and Figure 14 The state shown has a smaller restoring force.

[0367] Furthermore, in this state, the length between each end of the elastic member 740, i.e., the length in the front-to-back direction, is formed to be less than or equal to the sum of the thicknesses of the energized block 720 and the short-circuited block 730. Therefore, the position of the elastic member 740 does not affect the contact between the energized block 720 and the short-circuited block 730.

[0368] At this point, it can be understood that the direction of the restoring force stored in the elastic member 740 in each state is the direction in which the second support plate 712 is pulled toward the first support plate 711, that is, the direction toward the rear.

[0369] 4. Description of the operation process of the short-circuit regulating devices 400, 500, 600, and 700 in embodiments of the present invention.

[0370] The modular multilevel converter 1 of various embodiments of the present invention includes short-circuit adjustment devices 400, 500, 600, and 700. The short-circuit adjustment devices 400, 500, 600, and 700 can be operated by external force, allowing the energized blocks 420, 520, 620, and 720 and the short-circuit blocks 430, 530, 630, and 730 to be in contact or separated.

[0371] Therefore, the plurality of energized blocks 420, 520, 620, 720 in contact with the plurality of short-circuit blocks 430, 530, 630, 730 and the plurality of capacitor assemblies 100 connected to them in an electrically conductive manner can be simultaneously short-circuited and grounded.

[0372] At this time, the plurality of short-circuit blocks 430, 530, 630, and 730 move across the space section 413, 513, 613, and 713 in the direction facing the plurality of energized blocks 420, 520, 620, and 720 and in the opposite direction.

[0373] In addition, a plurality of energized blocks 420, 520, 620, 720 and a plurality of short-circuited blocks 430, 530, 630, 730 are configured to overlap along the moving direction.

[0374] Therefore, the contact reliability between the short-circuit blocks 430, 530, 630, 730 and the energized blocks 420, 520, 620, 720 can be improved.

[0375] Furthermore, the movement distance of each short-circuit block 430, 530, 630, and 730 can be limited by the contact between each short-circuit block 430, 530, 630, and 730 and each energized block 420, 520, 620, and 720. That is, even if the handle components 470, 570, 670, and 770 are excessively rotated, each short-circuit block 430, 530, 630, and 730 can only move a predetermined distance.

[0376] Furthermore, the process can be easily performed by utilizing the rotation of cam members 460, 560, 660, and 760 caused by the rotation of handle members 470, 570, 670, and 770. Therefore, the plurality of capacitor assemblies 100 can easily achieve short circuit and grounding in one operation.

[0377] The following is for reference Figures 15a to 22b The operation process of the short-circuit adjustment devices 400, 500, 600, and 700 in various embodiments of the present invention will be described in detail.

[0378] (1) Description of the operation process of the short-circuit regulating device 400 according to an embodiment of the present invention

[0379] Reference Figures 15a to 16b The diagram illustrates the operation of a short-circuit regulating device 400 according to an embodiment of the present invention.

[0380] exist Figure 15a and Figure 16aIn the shown state, the energized block 420 and the short-circuited block 430 are separated from each other. Therefore, the plurality of capacitor assemblies 100, each energizedly connected to the plurality of energized blocks 420, are also electrically disconnected from the short-circuited block 430. As a result, the plurality of capacitor assemblies 100 can be disconnected simultaneously.

[0381] In this state, the first surface 461 of the cam member 460 contacts the first support plate 411 and the second support plate 412, respectively. That is, the cam members 460 are arranged such that their long axis extends between the first support plate 411 and the second support plate 412.

[0382] Therefore, despite the restoring force stored in the elastic member 440, the second support plate 412 and the plurality of short-circuit blocks 430 attached thereto will not move due to the cam member 460.

[0383] In this state, the distance between the first support plate 411 and the second support plate 412 is the first distance D1, which is the maximum.

[0384] Therefore, the shape deformation of the elastic member 440 reaches its maximum, and the restoring force stored in the elastic member 440 also reaches its maximum. At this time, the direction of the restoring force stored in the elastic member 440 is the direction for restoring to the initial shape, that is, the rear side in the illustrated embodiment.

[0385] To enable the short-circuit block 430 and the energized block 420 to contact and rotate the handle member 470, the cam member 460 attached thereto also rotates. In the illustrated embodiment, the first handle member 471 located on the left rotates clockwise, and the second handle member 472 located on the right rotates counterclockwise.

[0386] The rotation direction of the handle component 470 can be changed. However, it is acceptable as long as the handle component 470 rotates in a direction that does not affect the movement of the second support plate 412 and the short-circuit block 430, as well as the movement of the short-circuit block 430 and the energized block 420.

[0387] That is, as described above, the first surface 461 and the second surface 462 of the cam member 460 are each a plurality of ones, and are symmetrically arranged with respect to the shaft member 450. Therefore, even if the handle member 470 and the cam member 460 connected thereto rotate in either a clockwise or counterclockwise direction, the short-circuit adjustment device 400 can still perform a predetermined action.

[0388] As the handle component 470 rotates, the cam component 460 rotates, thereby separating the first surface 461 from the first support plate 411 and the second support plate 412. In addition, the second surface 462, which is continuous with the first surface 461, contacts the first support plate 411 and the second support plate 412.

[0389] exist Figure 15b and Figure 16b In the state shown, the energized block 420 and the short-circuited block 430 are in contact with each other and are energized.

[0390] Therefore, the plurality of capacitor assemblies 100, which are energized and connected to the plurality of energized blocks 420 respectively, are also energized to the short-circuit block 430. As a result, the plurality of capacitor assemblies 100 can be simultaneously short-circuited and grounded.

[0391] In this state, the second surface 462 of the cam member 460 contacts the first support plate 411 and the second support plate 412, respectively. That is, the cam members 460 are arranged such that their short axis extends between the first support plate 411 and the second support plate 412.

[0392] Therefore, the elastic member 440 can be compressed by the difference in length between the major axis and the minor axis of the cam member 460. Consequently, the second support plate 412 connected to the elastic member 440 and the short-circuit block 430 coupled thereto also move in a direction toward the first support plate 411 and the energized block 420.

[0393] In this state, the distance between the first support plate 411 and the second support plate 412 is the second distance D2, which is the minimum.

[0394] Therefore, the shape deformation of the elastic member 440 becomes minimal, and the restoring force stored in the elastic member 440 also becomes minimal.

[0395] To separate the short-circuit block 430 and the energized block 420 again and rotate the handle member 470, the cam member 460 attached to it also rotates. In the illustrated embodiment, the first handle member 471 on the left rotates counterclockwise, and the second handle member 472 on the right rotates clockwise.

[0396] The rotation direction of the handle component 470 can be changed. However, it is acceptable as long as the handle component 470 rotates in a direction that does not affect the movement of the second support plate 412 and the short-circuit block 430, as well as the movement of the short-circuit block 430 and the energized block 420.

[0397] As the handle component 470 rotates, the cam component 460 rotates, thereby separating the second surface 462 from the first support plate 411 and the second support plate 412. In addition, the first surface 461, which is continuous with the second surface 462, contacts the first support plate 411 and the second support plate 412.

[0398] Therefore, in the short-circuit adjustment device 400 of this embodiment, the energized block 420 and the short-circuit block 430 can be in contact or separated by the arrangement direction of the cam member 460 and the restoring force stored in the elastic member 440.

[0399] As a result, the plurality of capacitor assemblies 100, which are energized and connected to the plurality of energized blocks 420 respectively, can also be short-circuited and grounded simultaneously, or disconnected.

[0400] Furthermore, since the energized block 420 and the short-circuited block 430 are in contact or separated from each other on their facing surfaces, the contact reliability of the energized block 420 and the short-circuited block 430 can be improved.

[0401] Reference Figures 17a to 18b The diagram illustrates the operation of a short-circuit regulating device 500 according to another embodiment of the present invention.

[0402] exist Figure 17a and Figure 18a In the shown state, the energized block 520 and the short-circuited block 530 are separated from each other. Therefore, the plurality of capacitor assemblies 100, each energizedly connected to the plurality of energized blocks 520, are also electrically disconnected from the short-circuited block 530. As a result, the plurality of capacitor assemblies 100 can be disconnected simultaneously.

[0403] In this state, the first surface 561 of the cam member 560 contacts the first support plate 511 and the second support plate 512, respectively. That is, the cam members 560 are arranged such that their long axis extends between the first support plate 511 and the second support plate 512.

[0404] Therefore, despite the restoring force stored in the elastic member 540, the second support plate 512 and the plurality of short-circuit blocks 530 attached thereto will not move due to the cam member 560.

[0405] In this state, the distance between the first support plate 511 and the second support plate 512 is the first distance D1, which is the maximum.

[0406] Therefore, the shape deformation of the elastic member 540 reaches its maximum, and the restoring force stored in the elastic member 540 also reaches its maximum. At this time, the direction of the restoring force stored in the elastic member 540 is the direction for restoring to the initial shape, that is, the rear side in the illustrated embodiment.

[0407] To enable the short-circuit block 530 and the energized block 520 to contact and rotate the handle member 570, the cam member 560 attached thereto also rotates. In the illustrated embodiment, the first handle member 571 located on the left rotates clockwise, and the second handle member 572 located on the right rotates counterclockwise.

[0408] The rotation direction of the handle component 570 can be changed. However, it is acceptable as long as the handle component 570 rotates in a direction that does not affect the movement of the second support plate 512 and the short-circuit block 530, as well as the movement of the short-circuit block 530 and the energized block 520.

[0409] That is, as described above, the first surface 561 and the second surface 562 of the cam member 560 are each a plurality of each, and are symmetrically arranged with respect to the shaft member 550. Therefore, even if the handle member 570 and the cam member 560 connected thereto rotate in either a clockwise or counterclockwise direction, the short-circuit adjustment device 500 can still perform a predetermined action.

[0410] As the handle component 570 rotates, the cam component 560 rotates, thereby separating the first surface 561 from the first support plate 511 and the second support plate 512. In addition, the second surface 562, which is continuous with the first surface 561, contacts the first support plate 511 and the second support plate 512.

[0411] exist Figure 17b and Figure 18b In the state shown, the energized block 520 and the short-circuited block 530 are in contact with each other and are energized.

[0412] Therefore, the plurality of capacitor assemblies 100, each energized and connected to the plurality of energized blocks 520, are also energized with the short-circuit block 530. As a result, the plurality of capacitor assemblies 100 can be simultaneously short-circuited and grounded.

[0413] In this state, the second surface 562 of the cam member 560 contacts the first support plate 511 and the second support plate 512, respectively. That is, the cam members 560 are arranged such that their short axis extends between the first support plate 511 and the second support plate 512.

[0414] Therefore, the elastic member 540 can be compressed by the difference in length between the major axis and the minor axis of the cam member 560. Consequently, the second support plate 512 connected to the elastic member 540 and the short-circuit block 530 coupled thereto also move in a direction toward the first support plate 511 and the energized block 520.

[0415] In this state, the distance between the first support plate 511 and the second support plate 512 is the second distance D2, which is the minimum.

[0416] Therefore, the shape deformation of the elastic member 540 becomes minimal, and the restoring force stored in the elastic member 540 also becomes minimal.

[0417] As described above, in this state, the extension length of the elastic member 540 is less than or equal to the second distance D2. Therefore, the elastic member 540 does not affect the contact between the energized block 520 and the short-circuited block 430.

[0418] To separate the short-circuit block 530 and the energized block 520 again and rotate the handle member 570, the cam member 560 attached to it also rotates. In the illustrated embodiment, the first handle member 571 on the left rotates counterclockwise, and the second handle member 572 on the right rotates clockwise.

[0419] The rotation direction of the handle component 570 can be changed. However, it is acceptable as long as the handle component 570 rotates in a direction that does not affect the movement of the second support plate 512 and the short-circuit block 530, as well as the movement of the short-circuit block 530 and the energized block 520.

[0420] As the handle component 570 rotates, the cam component 560 rotates, thereby separating the second surface 562 from the first support plate 511 and the second support plate 512, respectively. In addition, the first surface 561, which is continuous with the second surface 562, contacts the first support plate 511 and the second support plate 512, respectively.

[0421] Therefore, in the short-circuit adjustment device 500 of this embodiment, the energized block 520 and the short-circuit block 530 can be in contact or separated by the arrangement direction of the cam member 560 and the restoring force stored in the elastic member 540.

[0422] As a result, the plurality of capacitor assemblies 100, which are energized and connected to the plurality of energized blocks 520 respectively, can also be short-circuited and grounded simultaneously, or disconnected.

[0423] Furthermore, since the energized block 520 and the short-circuit block 530 are in contact or separated from each other on their facing surfaces, the contact reliability of the energized block 520 and the short-circuit block 530 can be improved.

[0424] (3) Description of the operation process of the short-circuit regulating device 600 according to another embodiment of the present invention

[0425] Reference Figures 19a to 20b The diagram illustrates the operation of a short-circuit regulating device 600 according to another embodiment of the present invention.

[0426] exist Figure 19a and Figure 20a In the shown state, the energized block 620 and the short-circuited block 630 are separated from each other. Therefore, the plurality of capacitor assemblies 100, each energizedly connected to the plurality of energized blocks 620, are also electrically disconnected from the short-circuited block 630. As a result, the plurality of capacitor assemblies 100 can be disconnected simultaneously.

[0427] In this state, the first surface 661 of the cam member 660 contacts the first support plate 611 and the second support plate 612, respectively. That is, the cam members 660 are arranged such that their long axis extends between the first support plate 611 and the second support plate 612.

[0428] Therefore, despite the restoring force stored in the elastic member 640, the second support plate 612 and the plurality of short-circuit blocks 630 attached thereto will not move due to the cam member 660.

[0429] In this state, the distance between the first support plate 611 and the second support plate 612 is the first distance D1, which is the maximum.

[0430] Therefore, the shape deformation of the elastic member 640 reaches its maximum, and the restoring force stored in the elastic member 640 also reaches its maximum. At this time, the direction of the restoring force stored in the elastic member 640 is the direction for restoring to the initial shape, that is, the rear side in the illustrated embodiment.

[0431] To enable the short-circuit block 630 and the energized block 620 to contact and rotate the handle member 670, the cam member 660 attached to it also rotates. In the illustrated embodiment, the first handle member 671 located on the left rotates clockwise, and the second handle member 672 located on the right rotates counterclockwise.

[0432] The rotation direction of the handle component 670 can be changed. However, it is acceptable as long as the handle component 670 rotates in a direction that does not affect the movement of the second support plate 612 and the short-circuit block 630, as well as the movement of the short-circuit block 630 and the energized block 620.

[0433] That is, as described above, the cam member 660 has a plurality of first surfaces 661 and second surfaces 662, and is symmetrically arranged with respect to the shaft member 650. Therefore, even if the handle member 670 and the cam member 660 connected thereto rotate in either a clockwise or counterclockwise direction, the short-circuit adjustment device 600 can still perform a predetermined action.

[0434] As the handle component 670 rotates, the cam component 660 rotates, thereby separating the first surface 661 from the first support plate 611 and the second support plate 612. In addition, the second surface 662, which is continuous with the first surface 661, contacts the first support plate 611 and the second support plate 612.

[0435] exist Figure 19b and Figure 20b In the state shown, the energized block 620 and the short-circuited block 630 are in contact with each other and are energized.

[0436] Therefore, the plurality of capacitor assemblies 100, each energized and connected to the plurality of energized blocks 620, are also energized with the short-circuit block 630. As a result, the plurality of capacitor assemblies 100 can be simultaneously short-circuited and grounded.

[0437] In this state, the second surface 662 of the cam member 660 contacts the first support plate 611 and the second support plate 612, respectively. That is, the cam members 660 are arranged such that their short axis extends between the first support plate 611 and the second support plate 612.

[0438] Therefore, the elastic member 640 can be compressed by the difference in length between the major axis and the minor axis of the cam member 660. Consequently, the second support plate 612 connected to the elastic member 640 and the short-circuit block 630 coupled thereto also move in a direction toward the first support plate 611 and the energized block 620.

[0439] In this state, the distance between the first support plate 611 and the second support plate 612 is the second distance D2, which is the minimum.

[0440] Therefore, the shape deformation of the elastic member 640 becomes minimal, and the restoring force stored in the elastic member 640 also becomes minimal.

[0441] To separate the short-circuit block 630 and the energized block 620 again and rotate the handle member 670, the cam member 660 attached to it also rotates. In the illustrated embodiment, the first handle member 671 on the left rotates counterclockwise, and the second handle member 672 on the right rotates clockwise.

[0442] The rotation direction of the handle component 670 can be changed. However, it is acceptable as long as the handle component 670 rotates in a direction that does not affect the movement of the second support plate 612 and the short-circuit block 630, as well as the movement of the short-circuit block 630 and the energized block 620.

[0443] As the handle component 670 rotates, the cam component 660 rotates, thereby separating the second surface 662 from the first support plate 611 and the second support plate 612. In addition, the first surface 661, which is continuous with the second surface 662, contacts the first support plate 611 and the second support plate 612.

[0444] Therefore, in the short-circuit adjustment device 600 of this embodiment, the energized block 620 and the short-circuit block 630 can be in contact or separated by the arrangement direction of the cam member 660 and the restoring force stored in the elastic member 640.

[0445] As a result, the plurality of capacitor assemblies 100, which are energized and connected to the plurality of energized blocks 620 respectively, can also be short-circuited and grounded simultaneously, or disconnected.

[0446] Furthermore, since the energized block 620 and the short-circuit block 630 are in contact or separated from each other on their facing surfaces, the contact reliability of the energized block 620 and the short-circuit block 630 can be improved.

[0447] (4) Description of the operation process of the short-circuit regulating device 700 according to another embodiment of the present invention

[0448] Reference Figures 21a to 22b The diagram illustrates the operation of a short-circuit regulating device 700 according to another embodiment of the present invention.

[0449] exist Figure 21a and Figure 22a In the shown state, the energized block 720 and the short-circuit block 730 are separated from each other. Therefore, the plurality of capacitor assemblies 100, each energizedly connected to the plurality of energized blocks 720, are also electrically disconnected from the short-circuit block 730. As a result, the plurality of capacitor assemblies 100 can be simultaneously disconnected.

[0450] In this state, the first surface 761 of the cam member 760 contacts the first support plate 711 and the second support plate 712, respectively. That is, the cam members 760 are arranged such that their long axis extends between the first support plate 711 and the second support plate 712.

[0451] Therefore, despite the restoring force stored in the elastic member 740, the second support plate 712 and the plurality of short-circuit blocks 730 attached thereto will not move due to the cam member 760.

[0452] In the stated state, the distance between the first support plate 711 and the second support plate 712 is the first distance D1, which is the maximum.

[0453] Therefore, the shape deformation of the elastic member 740 reaches its maximum, and thus the restoring force stored in the elastic member 740 also reaches its maximum. At this time, the direction of the restoring force stored in the elastic member 740 is the direction for restoring to the initial shape, that is, the rear side in the illustrated embodiment.

[0454] To enable the short-circuit block 730 and the energized block 720 to contact and rotate the handle member 770, the cam member 760 attached thereto also rotates. In the illustrated embodiment, the first handle member 771 located on the left rotates clockwise, and the second handle member 772 located on the right rotates counterclockwise.

[0455] The rotation direction of the handle component 770 can be changed. However, it is acceptable as long as the handle component 770 rotates in a direction that does not affect the movement of the second support plate 712 and the short-circuit block 730, as well as the movement of the short-circuit block 730 and the energized block 720.

[0456] That is, as described above, the cam member 760 has a plurality of first surfaces 761 and second surfaces 762, and is symmetrically arranged with respect to the shaft member 750. Therefore, even if the handle member 770 and the cam member 760 connected thereto rotate in either a clockwise or counterclockwise direction, the short-circuit adjustment device 700 can still perform a predetermined action.

[0457] As the handle component 770 rotates, the cam component 760 rotates, thereby separating the first surface 761 from the first support plate 711 and the second support plate 712. In addition, the second surface 762, which is continuous with the first surface 761, contacts the first support plate 711 and the second support plate 712.

[0458] exist Figure 21b and Figure 22b In the state shown, the energized block 720 and the short-circuited block 730 are in contact with each other and are energized.

[0459] Therefore, the plurality of capacitor assemblies 100, each energized and connected to the plurality of energized blocks 720, are also energized with the short-circuit block 730. As a result, the plurality of capacitor assemblies 100 can be simultaneously short-circuited and grounded.

[0460] In this state, the second surface 762 of the cam member 760 contacts the first support plate 711 and the second support plate 712, respectively. That is, the cam members 760 are arranged such that their short axis extends between the first support plate 711 and the second support plate 712.

[0461] Therefore, the elastic member 740 can be compressed by the difference in length between the major axis and the minor axis of the cam member 760. Consequently, the second support plate 712 connected to the elastic member 740 and the short-circuit block 730 coupled thereto also move in a direction toward the first support plate 711 and the energized block 720.

[0462] In this state, the distance between the first support plate 711 and the second support plate 712 is the second distance D2, which is the minimum.

[0463] Therefore, the shape deformation of the elastic member 740 becomes minimal, and thus the restoring force stored in the elastic member 740 also becomes minimal.

[0464] As described above, in this state, the extension length of the elastic member 740 is less than or equal to the second distance D2. Therefore, the elastic member 740 does not affect the contact between the energized block 720 and the short-circuited block 430.

[0465] To separate the short-circuit block 730 and the energized block 720 again and rotate the handle member 770, the cam member 760 attached to it also rotates. In the illustrated embodiment, the first handle member 771 on the left rotates counterclockwise, and the second handle member 772 on the right rotates clockwise.

[0466] The rotation direction of the handle component 770 can be changed. However, it is acceptable as long as the handle component 770 rotates in a direction that does not affect the movement of the second support plate 712 and the short-circuit block 730, as well as the movement of the short-circuit block 730 and the energized block 720.

[0467] As the handle component 770 rotates, the cam component 760 rotates, thereby separating the second surface 762 from the first support plate 711 and the second support plate 712. In addition, the first surface 761, which is continuous with the second surface 762, contacts the first support plate 711 and the second support plate 712.

[0468] Therefore, in the short-circuit adjustment device 700 of this embodiment, the energized block 720 and the short-circuit block 730 can be in contact or separated by the arrangement direction of the cam member 760 and the restoring force stored in the elastic member 740.

[0469] As a result, the plurality of capacitor assemblies 100, which are energized and connected to the plurality of energized blocks 720 respectively, can also be short-circuited and grounded simultaneously, or disconnected.

[0470] Furthermore, since the energized block 720 and the short-circuit block 730 are in contact or separated from each other on their facing surfaces, the contact reliability of the energized block 720 and the short-circuit block 730 can be improved.

[0471] The above description refers to preferred embodiments of the present invention. However, it should be understood that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention as described in the claims.

[0472] 1: Modular Multilevel Converter

[0473] 10: Submodule

[0474] 20: Framework

[0475] 21: Vertical Frame

[0476] 22: Horizontal Frame

[0477] 23: Supporting Frame

[0478] 24: Fixed Frame

[0479] 25: Piping components

[0480] 100: Capacitor assembly

[0481] 110: Capacitor trolley unit

[0482] 200: Valve assembly

[0483] 220: Valve assembly trolley unit

[0484] 300: Grounding part

[0485] 400: A short-circuit regulating device according to an embodiment of the present invention

[0486] 410: Support section

[0487] 411: First support plate

[0488] 412: Second support plate

[0489] 413: Space Department

[0490] 420: Electrified block

[0491] 421: Conductor Components

[0492] 430: Short-circuit block

[0493] 440: Elastic member

[0494] 440a: First elastic member

[0495] 440b: Second elastic member

[0496] 441: Fixing part

[0497] 450: Shaft member

[0498] 451: First Axis

[0499] 452: Second Axis

[0500] 460: Cam component

[0501] 460a: First cam component

[0502] 460b: Second cam component

[0503] 461: Part One

[0504] 462: Part Two

[0505] 470: Handle component

[0506] 471: First handle component

[0507] 472: Second handle component

[0508] 500: Short-circuit regulating device according to another embodiment of the present invention

[0509] 510: Support section

[0510] 511: First Support Plate

[0511] 512: Second support plate

[0512] 513: Space Department

[0513] 520: Electrified Block

[0514] 521: Conductor Components

[0515] 530: Short-circuit block

[0516] 540: Elastic component

[0517] 550: Shaft component

[0518] 551: First Axis

[0519] 552: Second Axis

[0520] 560: Cam component

[0521] 560a: First cam component

[0522] 560b: Second cam component

[0523] 561: Part One

[0524] 562: Part Two

[0525] 570: Handle component

[0526] 571: First Handle Component

[0527] 572: Second handle component

[0528] 600: A short-circuit regulating device according to another embodiment of the present invention

[0529] 610: Support section

[0530] 611: First Support Plate

[0531] 612: Second support plate

[0532] 613: Space Department

[0533] 620: Electrified Block

[0534] 621: Conductor Components

[0535] 630: Short-circuit block

[0536] 640: Elastic member

[0537] 650: Shaft member

[0538] 651: First Axis

[0539] 652: Second Axis

[0540] 660: Cam component

[0541] 660a: First cam component

[0542] 660b: Second cam component

[0543] 661: Part One

[0544] 662: Part Two

[0545] 670: Handle component

[0546] 671: First handle component

[0547] 672: Second handle component

[0548] 700: A short-circuit regulating device according to another embodiment of the present invention

[0549] 710: Support section

[0550] 711: First Support Plate

[0551] 712: Second support plate

[0552] 713: Space Department

[0553] 720: Electrified Block

[0554] 721: Conductor Components

[0555] 730: Short-circuit block

[0556] 740: Elastic Component

[0557] 750: Shaft member

[0558] 751: First Axis

[0559] 752: Second Axis

[0560] 760: Cam component

[0561] 760a: First cam component

[0562] 760b: Second cam component

[0563] 761: Part One

[0564] 762: Part Two

[0565] 770: Handle component

[0566] 771: First Handle Component

[0567] 772: Second Handle Component

[0568] D1: First Distance

[0569] D2: Second Distance

Claims

1. A short-circuit regulating device, wherein, include: The first support plate extends in one direction; The second support plate extends along one direction, is spaced apart from the first support plate, faces the first support plate, and moves in another direction either towards the first support plate or away from the first support plate. The energized block is attached to the first support plate, faces the second support plate, and can be energizedly connected to an external capacitor assembly. A short-circuit block, attached to the second support plate, facing the energized block, and electrically connected to the external ground; and A cam component is located between the first support plate and the second support plate, and contacts both the first support plate and the second support plate. The cross-section of the cam member is formed such that its lengths in one direction and the other direction are different from each other. If the cam component rotates, the short-circuit block will contact or separate from the energized block.

2. The short-circuit regulating device according to claim 1, wherein, The cross-section of the cam component is elliptical.

3. The short-circuit regulating device according to claim 2, wherein, The cam component includes: The first surface forms a portion of the outer peripheral surface of the cam member, having a prescribed curvature with its minor axis as a chord; and The second surface, continuous with the first surface, forms the remainder of the outer peripheral surface of the cam member, and has a predetermined curvature with a smaller curvature than that of the first surface, about its major axis. If the cam component rotates, the first surface and the second surface alternately contact the first support plate and the second support plate, respectively.

4. The short-circuit regulating device according to claim 1, wherein, include: A shaft member is located between the first support plate and the second support plate, is connected to the cam member, and rotates together with the cam member; as well as The handle component, coupled to the shaft component, rotates together with the shaft component and extends outward.

5. The short-circuit regulating device according to claim 4, wherein, The handle component is configured to rotate clockwise or counterclockwise by a predetermined angle. The cam component rotates together with the handle component by the specified angle.

6. The short-circuit regulating device according to claim 5, wherein, The specified angle is a right angle.

7. The short-circuit regulating device according to claim 1, wherein, It includes an elastic member, which is combined with the first support plate and the second support plate respectively, and applies a restoring force to the second support plate in the direction toward the first support plate.

8. The short-circuit regulating device according to claim 7, wherein, The magnitude of the restoring force stored in the elastic member when the energized block and the short-circuited block are separated is greater than the magnitude of the restoring force stored in the elastic member when the energized block and the short-circuited block are in contact.

9. The short-circuit regulating device according to claim 7, wherein, The elastic member is configured as a helical spring, extending between the first support plate and the second support plate, and overlapping the energized block and the short-circuited block in the other direction.

10. The short-circuit regulating device according to claim 7, wherein, The elastic member is configured as a helical spring extending in the other direction, with each end of its extension direction connected to the respective faces of the first support plate and the second support plate facing each other. Each end of the elastic member is respectively arranged adjacent to the energized block and the short-circuited block.

11. The short-circuit regulating device according to claim 10, wherein, The energized block and the short-circuited block are each formed to have a specified thickness. When the energized block and the short-circuited block are in contact, the extension length of the elastic member is less than or equal to the sum of the thicknesses of the energized block and the short-circuited block.

12. The short-circuit regulating device according to claim 7, wherein, The elastic member is configured as a strip of stretchable material that surrounds the first support plate and the second support plate from the outside, is coupled to the first support plate and the second support plate, and is configured to overlap with the energized block and the short-circuited block in the other direction.

13. The short-circuit regulating device according to claim 7, wherein, The elastic member is configured as a torsion spring, with each end of its extension direction connected to the respective faces of the first and second support plates facing each other. Each end of the elastic member is respectively arranged adjacent to the energized block and the short-circuited block.

14. The short-circuit regulating device according to claim 1, wherein, The energized block and the short-circuited block each have a plurality of units. The plurality of said energized blocks are spaced apart from each other along said one direction and are respectively electrically connected to the plurality of said capacitor assemblies. The plurality of short-circuit blocks are spaced apart from each other along the one direction and overlap with the plurality of energized blocks along the other direction.

15. A modular multilevel converter, wherein, include: frame; A plurality of capacitor assemblies are inserted into or led out of the frame; as well as A short-circuit regulating device, integrated into the frame, is electrically connected to both the capacitor assembly and the external ground. The short-circuit regulating device includes: A first support plate, attached to the frame, extends in one direction; The second support plate extends along one direction, is spaced apart from the first support plate, faces the first support plate, and moves in another direction either towards the first support plate or away from the first support plate. A plurality of energized blocks are attached to the first support plate, facing the second support plate, and are respectively energizedly connected to a plurality of the capacitor assemblies; A plurality of short-circuit blocks, combined with the second support plate, facing the plurality of energized blocks, are respectively energized and connected to the external ground. A cam component is rotatably disposed between the first support plate and the second support plate, and contacts the first support plate and the second support plate respectively; and An elastic member, respectively connected to the first support plate and the second support plate, applies a restoring force to the second support plate in the direction toward the first support plate. The cross-section of the cam component is an ellipse shape comprising both a major axis and a minor axis. If the cam component rotates and the short shafts are aligned along the one direction, then the short-circuit block and the energized block are separated. If the cam component rotates and the long axis is aligned along the direction, then the short-circuit block and the energized block come into contact.

16. The modular multilevel converter according to claim 15, wherein, The plurality of short-circuit blocks and the plurality of energized blocks are arranged spaced apart from each other along the said one direction. The elastic member is a plurality of such members, which are spaced apart from each other along the one direction and are respectively arranged adjacent to the short-circuit block and the energized block.

17. The modular multilevel converter according to claim 15, wherein, The elastic member is configured as a helical spring, extending between the first support plate and the second support plate, and overlapping the energized block and the short-circuited block in the other direction.

18. The modular multilevel converter according to claim 15, wherein, The elastic member is configured as a helical spring, extending between the first support plate and the second support plate. In the elastic member, one end extending in the direction of extension is coupled to the first support plate between the plurality of energized blocks, and the other end extending in the direction of extension is coupled to the second support plate between the plurality of short-circuited blocks.

19. The modular multilevel converter according to claim 15, wherein, The elastic member is configured as a strip of stretchable material, surrounding the first support plate and the second support plate from the outside, and is integrated with the first support plate and the second support plate. The elastic member is configured to overlap with the energized block and the short-circuited block along the other direction.

20. The modular multilevel converter according to claim 15, wherein, include: A shaft component is disposed between the first support plate and the second support plate, and is engaged with the cam component and rotates together with it; as well as The handle component, coupled to the shaft component, rotates together with the shaft component and extends outward.

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