WO2022259422A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
- Publication number
- WO2022259422A1 WO2022259422A1 PCT/JP2021/021921 JP2021021921W WO2022259422A1 WO 2022259422 A1 WO2022259422 A1 WO 2022259422A1 JP 2021021921 W JP2021021921 W JP 2021021921W WO 2022259422 A1 WO2022259422 A1 WO 2022259422A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating
- wall portion
- power converter
- side wall
- conversion device
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 89
- 238000009413 insulation Methods 0.000 claims description 23
- 239000012212 insulator Substances 0.000 claims description 23
- 239000011810 insulating material Substances 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 6
- 239000011151 fibre-reinforced plastic Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14339—Housings specially adapted for power drive units or power converters specially adapted for high voltage operation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14325—Housings specially adapted for power drive units or power converters for cabinets or racks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
Definitions
- the present disclosure relates to power converters.
- Patent Document 1 describes a power converter.
- the power converter described in Patent Document 1 has a plurality of posts, a plurality of insulating substrates, a plurality of insulators, and a plurality of insulating shields.
- Multiple pillars are lined up on the installation surface.
- the plurality of insulating substrates are arranged at intervals along the vertical direction.
- the insulating substrate closest to the installation surface is supported by a plurality of pillars.
- An insulator is arranged between two adjacent insulating substrates.
- a plurality of cell converters are arranged on the insulating substrate.
- An insulating shield is arranged around the insulating substrate.
- the present disclosure has been made in view of the problems of the prior art as described above. More specifically, the present disclosure provides a power converter that can be made smaller and lighter.
- a power conversion device of the present disclosure includes a plurality of submodules and an insulating structure.
- the plurality of sub-modules are arranged along at least one of a first direction and a second direction orthogonal to the first direction. Two of the adjacent sub-modules are insulated from each other by an insulating structure.
- FIG. 1 is a schematic circuit diagram of a power conversion device 100;
- FIG. 2 is a schematic circuit diagram of a submodule 10;
- FIG. 2 is a plan view of the power conversion device 100;
- FIG. 1 is a front view of a power conversion device 100;
- FIG. 2 is a side view of the power conversion device 100;
- FIG. 1 is a perspective view of a power conversion device 100;
- FIG. 3 is a perspective view of an insulating housing 30;
- FIG. FIG. 11 is an exploded perspective view of an insulating housing 30 according to a modification;
- FIG. 11 is a perspective view of an insulating structure 20 according to a modified example; It is a top view of power converter 100A.
- It is a front view of power converter 100A.
- It is a side view of power converter 100A.
- FIG. 1 is a perspective view of an insulating rack 60;
- FIG. 11 is a perspective view of an insulating rack 60 according to a modified example;
- 4 is a perspective view of a second frame 70;
- FIG. It is a top view of power converter device 100D.
- the power converter device 100F is a side view of the power converter device 100F.
- Embodiment 1 A power conversion device (referred to as “power conversion device 100”) according to Embodiment 1 will be described.
- FIG. 1 is a schematic circuit diagram of the power converter 100. As shown in FIG. 1 , the power conversion device 100 has multiple pairs of upper arms 110 and lower arms 120 . Upper arm 110 and lower arm 120 are connected in series. Each of the multiple sets of upper arms 110 and lower arms 120 are connected in parallel. A transformer 130 is connected between the upper arm 110 and the lower arm 120 . The upper arm 110 and the lower arm 120 have multiple submodules 10 connected in series.
- MMC Multilevel Modular Converter
- HVDC High Voltage DC
- FIG. 1 is a schematic circuit diagram of the power converter 100. As shown in FIG. 1 , the power conversion device 100 has multiple pairs of upper arms 110 and lower arms 120 . Upper arm 110 and lower arm 120 are connected in series. Each of the multiple sets of upper arms 110 and lower arms 120 are connected in parallel. A transformer 130 is connected between the upper arm 110 and the lower arm 120 . The upper arm 110 and the lower arm 120 have multiple submodules 10 connected in series.
- FIG. 2 is a schematic circuit diagram of the submodule 10.
- the submodule 10 has, for example, switching elements 11a and 11b, diodes 12a and 12b, capacitors 13, and connection lines 14a and 14b.
- the switching elements 11a and 11b are, for example, IGBTs (Insulated Gate Bipolar Transistors).
- the switching element 11a and the switching element 11b are connected in series.
- the diodes 12a and 12b are connected in parallel so as to reverse bias the switching elements 11a and 11b, respectively.
- the capacitor 13 is connected in parallel with the switching elements 11a and 11b that are connected in series.
- connection line 14a is connected to the emitter of the switching element 11a and the collector of the switching element 11b.
- the connection line 14b is connected to the emitter of the switching element 11b.
- the connection line 14a of one submodule 10 is connected to the connection line 14b of another submodule 10 adjacent thereto.
- the submodule 10 constitutes a half-bridge type converter cell.
- the submodule 10 may constitute a full-bridge converter cell.
- FIG. 3 is a plan view of the power converter 100.
- FIG. FIG. 4 is a front view of the power conversion device 100.
- FIG. FIG. 5 is a side view of the power conversion device 100.
- FIG. FIG. 6 is a perspective view of the power conversion device 100.
- the plurality of submodules 10 are arranged along the first direction DR1 and the second direction DR2. However, the plurality of submodules 10 may be arranged along either one of the first direction DR1 and the second direction DR2.
- the second direction DR2 is orthogonal to the first direction DR1.
- the first direction DR1 corresponds to the horizontal direction.
- the second direction DR2 corresponds to the vertical direction.
- the power converter 100 has an insulating structure 20 .
- the insulating structure 20 is arranged on the installation surface.
- An insulating structure 20 provides insulation between two sub-modules 10 adjacent in the first direction DR1.
- An insulating structure 20 provides insulation between two sub-modules 10 adjacent in the second direction DR2.
- the insulating structure 20 is, for example, a plurality of insulating housings 30.
- the insulating housing 30 is made of an insulating material.
- the insulating housing 30 is preferably made of a lightweight and highly rigid material.
- the insulating housing 30 is made of, for example, a resin material such as epoxy or FRP (Fiber Reinforced Plastic).
- the insulating housing 30 may be an insulated metal material, concrete, or porcelain material.
- the insulating treatment is performed, for example, by applying an insulating material, insulating coating, or the like.
- FIG. 7 is a perspective view of the insulating housing 30.
- the insulating housing 30 has a first side wall portion 31, a second side wall portion 32, a bottom wall portion 33, a top wall portion 34, and a back wall portion 35.
- the insulating housing 30 may not have the back wall portion 35 .
- the first side wall portion 31 and the second side wall portion 32 face each other with a gap therebetween in the first direction DR1.
- the bottom wall portion 33 and the top wall portion 34 face each other with a gap therebetween in the second direction DR2.
- the bottom wall portion 33 continues to the lower ends of the first side wall portion 31 and the second side wall portion 32 .
- the upper wall portion 34 continues to the upper ends of the first side wall portion 31 and the second side wall portion 32 .
- a direction perpendicular to the first direction DR1 and the second direction DR2 is defined as a third direction DR3.
- the third direction DR3 corresponds to the horizontal direction.
- the back wall portion 35 continues to one end of the first side wall portion 31, the second side wall portion 32, the bottom wall portion 33, and the top wall portion 34 in the third direction DR3.
- the one end side of the insulating housing 30 in the third direction DR3 is closed.
- the other end side of insulating housing 30 in third direction DR3 is open.
- the inner space of the insulating housing 30 is defined by the first side wall portion 31 , the second side wall portion 32 , the bottom wall portion 33 and the top wall portion 34 .
- a sub-module 10 is arranged in the inner space of the insulating housing 30 .
- the submodule 10 is arranged in the internal space of the insulating housing 30, for example, through an opening on the other end side of the insulating housing 30 in the third direction DR3.
- the plurality of insulating housings 30 are arranged along the first direction DR1 and the second direction DR2. When the plurality of sub-modules 10 are arranged along either one of the first direction DR1 and the second direction DR2, the plurality of insulating housings 30 are also arranged along one of the first direction DR1 and the second direction DR2. lined up.
- One of the two adjacent insulating housings 30 is fixed to the other of the two adjacent insulating housings 30. More specifically, the first side wall portion 31 of one of the two insulating housings 30 adjacent in the first direction DR1 is the first side wall portion 31 of the other of the two insulating housings 30 adjacent in the first direction DR1. 2 is fixed to the side wall portion 32 . One bottom wall portion 33 of two insulating housings 30 adjacent in the second direction DR2 is fixed to the other top wall portion 34 of the two insulating housings 30 adjacent in the second direction DR2. It is This fixation is performed, for example, by gluing. This fixation may be performed using a fixation member made of an insulating material.
- the sub-module 10 arranged in one internal space of the two adjacent insulating housings 30 is arranged in the other internal space of the two adjacent insulating housings 30; For example, they are connected using a cable (not shown). This cable is passed through, for example, an opening at the other end of the insulating housing 30 in the third direction DR3.
- the power conversion device 100 two adjacent sub-modules 10 are separated from each other by the insulating structure 20 (more specifically, the first side wall portion 31 and the second side wall portion 32 or the bottom wall portion 33 and the top wall portion 34). insulated. Therefore, the power conversion device 100 can be miniaturized by narrowing the space between two adjacent sub-modules 10 .
- the power converter 100 two adjacent submodules 10 are insulated from each other by the insulating structure 20 .
- the insulating structure 20 also covers the bottom of the sub-module 10 closest to the ground plane. Therefore, in the power conversion device 100, it is not necessary to provide an insulating shield, and the weight can be reduced. Thus, according to the power conversion device 100, it is possible to reduce the size and weight.
- the configuration of the insulating structure 20 can be changed by changing the number of the insulating housings 30 arranged along the first direction DR1 and the second direction DR2. high. Therefore, according to the power converter 100, the layout can be flexibly changed according to factors such as the required number of sub-modules 10 and the installation area.
- the submodule 10 can be placed in the internal space of the insulating housing 30 through the opening of the insulating housing 30, so installation of the submodule 10 is easy.
- the submodule 10 can be accessed through the opening of the insulating housing 30, so maintenance is easy.
- the heat of the submodule 10 is easily released from the opening of the insulating housing 30, so the cooling performance for the submodule 10 can be enhanced.
- FIG. 8 is an exploded perspective view of an insulating housing 30 according to a modification.
- the insulating housing 30 may further have a front wall portion 36 .
- the front wall portion 36 closes the other end side of the insulating housing 30 in the third direction DR3.
- the front wall portion 36 is removable from the other ends of the first side wall portion 31, the second side wall portion 32, the bottom wall portion 33, and the top wall portion 34 in the third direction DR3.
- the front wall portion 36 is attached after the submodule 10 is arranged in the inner space of the insulating housing 30 . If the insulating housing 30 has a front wall portion 36, the insulating properties with respect to the submodule 10 can be further enhanced.
- FIG. 9 is a perspective view of an insulating structure 20 according to a modification.
- the insulating structure 20 does not have to be composed of a plurality of insulating housings 30 .
- it may be configured by assembling a plurality of insulating members 37 .
- 9 shows only a portion of the insulating member 37 that constitutes the insulating structure 20.
- the insulating member 37 has a first portion 37a and a second portion 37b.
- the first portion 37a extends in the first direction DR1.
- the second portion 37b extends in the second direction DR2 from the end of the first portion 37a in the first direction DR1. That is, the insulating member 37 is L-shaped.
- a similar insulating structure 20 can be obtained by assembling such insulating members 37 as well.
- Embodiment 2 A power conversion device (referred to as “power conversion device 100A”) according to Embodiment 2 will be described. Here, points different from the power electronics device 100 will be described, and redundant description will not be repeated.
- FIG. 10 is a plan view of the power converter 100A.
- FIG. 11 is a front view of the power converter 100A.
- FIG. 12 is a side view of the power converter 100A.
- the power converter 100A has a plurality of submodules 10 and an insulating structure 20.
- the insulating structure 20 is a plurality of insulating cases 30 .
- the configuration of the power conversion device 100A is common to the configuration of the power conversion device 100 .
- the power conversion device 100A further has a plurality of support insulators 40 and a first frame 50.
- the configuration of the power conversion device 100A is different from the configuration of the power conversion device 100.
- the multiple support insulators 40 are arranged in a plane orthogonal to the second direction DR2. That is, the plurality of support insulators 40 are arranged on the installation surface.
- the support insulator 40 is made of an insulating material.
- the insulating material is FRP, for example.
- the support insulator 40 may have folds formed of a polymer material on its surface.
- the support insulator 40 may be made of a porcelain material (or may be a porcelain insulator).
- the first frame 50 is arranged on a plurality of support insulators 40. That is, the first frame 50 is supported by multiple support insulators 40 .
- An insulating structure 20 (a plurality of insulating housings 30) is arranged on the first frame 50. As shown in FIG.
- the first frame 50 is made of a highly rigid material.
- the first frame 50 is made of, for example, a metal material.
- the submodule 10 It is possible to secure the insulation distance to the ground between the and the installation surface.
- Embodiment 3 A power conversion device (referred to as “power conversion device 100B”) according to Embodiment 3 will be described. Here, points different from the power electronics device 100A will be described, and redundant description will not be repeated.
- FIG. 13 is a plan view of the power converter 100B.
- FIG. 14 is a front view of the power converter 100B.
- FIG. 15 is a side view of the power conversion device 100B.
- the power converter 100B has a plurality of submodules 10, an insulating structure 20, a plurality of support insulators 40, and a first frame 50.
- the configuration of the power conversion device 100B is common to the configuration of the power conversion device 100A.
- the insulating structure 20 is a plurality of insulating racks 60.
- the configuration of the power conversion device 100B is different from the configuration of the power conversion device 100A.
- the number of insulating racks 60 may be one.
- the multiple insulating racks 60 are arranged along the second direction DR2.
- the insulating rack 60 is made of an insulating material.
- the insulating rack 60 is preferably made of a lightweight and highly rigid material.
- the insulating rack 60 is made of, for example, a resin material such as epoxy or FRP.
- 16 is a perspective view of the insulating rack 60.
- the insulating rack 60 has a plurality of side walls 61, a bottom wall 62, a top wall 63, and a back wall 64. As shown in FIG. Insulating rack 60 may not have back wall 64 .
- the plurality of side wall portions 61 are arranged along the first direction DR1. Two adjacent side wall portions 61 face each other with a gap therebetween in the first direction DR1.
- the bottom wall portion 62 continues to the lower ends of the plurality of side wall portions 61 .
- the upper wall portion 63 continues to the upper ends of the plurality of side wall portions 61 .
- the bottom wall portion 62 and the top wall portion 63 face each other with a gap therebetween in the second direction DR2.
- the back wall portion 64 continues to one ends of the side wall portions 61, the bottom wall portion 62, and the top wall portion 63 in the third direction DR3. As a result, the one end side of insulating rack 60 in third direction DR3 is closed. The other end side of insulating rack 60 in third direction DR3 is open.
- the inner space of the insulating rack 60 is defined by two adjacent side walls 61 , bottom wall 62 and top wall 63 .
- a sub-module 10 is arranged in the internal space of the insulating rack 60 .
- the placement of the submodule 10 in the internal space of the insulating rack 60 is performed, for example, through an opening on the other end side of the insulating rack 60 in the third direction DR3.
- One of the two adjacent insulating racks 60 is fixed to the other of the two adjacent insulating racks 60. More specifically, the bottom wall portion 62 of one of the two insulating racks 60 adjacent in the second direction DR2 is the upper wall portion 63 of the other of the two insulating racks 60 adjacent in the second direction DR2. is fixed to This fixation is performed, for example, by gluing. This fixation may be performed using a fixation member made of an insulating material.
- the number of insulating racks 60 used to configure the insulating structure 20 is greater than the number of insulating enclosures 30 used to configure the insulating structure 20 when the number of sub-modules 10 to be arranged is the same. also less. Therefore, according to the power conversion device 100B, installation of the insulating structure 20 is facilitated.
- FIG. 17 is a perspective view of an insulating rack 60 according to a modification.
- the insulation rack 60 includes a first side wall 65 and a second side wall 66 instead of the plurality of side walls 61, bottom wall 62, top wall 63 and back wall 64. , a plurality of partition walls 67 and a back wall 68 .
- the first side wall portion 65 and the second side wall portion 66 face each other with a gap therebetween in the first direction DR1.
- the plurality of partition wall portions 67 are arranged along the second direction DR2.
- Two adjacent partition wall portions 67 face each other with a gap therebetween in the second direction DR2.
- the first side wall portion 65 continues to one end of the plurality of partition wall portions 67 in the first direction DR1, and the second side wall portion 66 continues to the other end of the plurality of partition wall portions 67 in the first direction DR1. .
- the back wall portion 68 continues to one ends of the first side wall portion 65, the second side wall portion 66, and the plurality of partition wall portions 67 in the third direction DR3.
- the one end side of insulating rack 60 in third direction DR3 is closed.
- the other end side of insulating rack 60 in third direction DR3 is open.
- the inner space of the insulating rack 60 is defined by the first side wall portion 65 , the second side wall portion 66 and the adjacent partition wall portions 67 .
- the plurality of insulating racks 60 are arranged along the first direction DR1. Also, in this case, the first side wall portion 65 of one of the two insulating racks 60 adjacent in the first direction DR1 is the second side wall portion of the other of the two insulating racks 60 adjacent in the first direction DR1. 66.
- Embodiment 4 A power conversion device (referred to as “power conversion device 100C”) according to Embodiment 4 will be described. Here, points different from the power conversion device 100B will be described, and redundant description will not be repeated.
- FIG. 18 is a plan view of the power converter 100C.
- FIG. 19 is a front view of the power converter 100C.
- FIG. 20 is a side view of the power converter 100C.
- the power converter 100C has a plurality of submodules 10, an insulating structure 20, a plurality of support insulators 40, and a first frame 50.
- the insulating structure 20 is a plurality of insulating racks 60 . Regarding these points, the configuration of the power conversion device 100C is common to the configuration of the power conversion device 100B.
- the power conversion device 100C further includes a plurality of second frames 70 and braces 80. Regarding this point, the configuration of the power conversion device 100C is different from the configuration of the power conversion device 100B.
- the second frame 70 is arranged between two insulating racks 60 adjacent in the second direction DR2.
- the second frame 70 is made of a highly rigid material.
- the second frame 70 is made of, for example, a metal material.
- FIG. 21 is a perspective view of the second frame 70.
- a plurality of through holes 71 are formed in the second frame 70 .
- the through hole 71 penetrates the second frame 70 along the second direction DR2 (thickness direction of the second frame 70). Thereby, the weight of the second frame 70 is reduced.
- the first frame 50 and the second frame 70 closest to the first frame 50 are fixed to each other.
- Two second frames 70 adjacent in the second direction DR2 are fixed to each other. Fixation between the first frame 50 and the second frame 70 closest to the first frame 50 and fixation of two second frames 70 adjacent in the second direction DR2 are performed by the braces 80 .
- the first frame 50 and the second frame 70 closest to the first frame 50 are fixed, and two second frames 70 adjacent in the second direction DR2 are fixed. is fixed on one side and the other side in the first direction DR1 and on the one side and the other side in the third direction DR3.
- fixing the first frame 50 to the second frame 70 closest to the first frame 50 and fixing two second frames 70 adjacent in the second direction DR2 are It does not have to be done.
- the first frame 50 and the second frame 70 closest to the first frame 50 are fixed, and the two second frames 70 adjacent in the second direction DR2 are fixed. , the seismic resistance can be improved.
- Embodiment 5 A power conversion device (referred to as “power conversion device 100D”) according to Embodiment 5 will be described. Here, points different from the power conversion device 100B will be described, and redundant description will not be repeated.
- FIG. 22 is a plan view of the power conversion device 100D.
- FIG. 23 is a front view of the power conversion device 100D.
- FIG. 24 is a side view of the power conversion device 100D.
- FIG. 25 is a rear view of the power conversion device 100D.
- the power converter 100D has a plurality of submodules 10, an insulating structure 20, a plurality of support insulators 40, and a first frame 50. ing.
- the insulating structure 20 is a plurality of insulating racks 60 . Regarding these points, the configuration of the power conversion device 100D is common to the configuration of the power conversion device 100B.
- the plurality of insulation racks 60 includes a plurality of first insulation racks 60a and a plurality of second insulation racks 60b. Regarding this point, the configuration of the power conversion device 100D is different from the configuration of the power conversion device 100B.
- the plurality of first insulating racks 60a are arranged along the second direction DR2.
- the plurality of second insulating racks 60b are arranged along the second direction DR2.
- the plurality of first insulation racks 60a and the plurality of second insulation racks 60b are arranged back-to-back in the third direction DR3. That is, the back wall portion 64 of the first insulating rack 60a faces the back wall portion 64 of the second insulating rack 60b in the third direction DR3.
- the back wall portion 64 of the first insulating rack 60a is preferably fixed to the back wall portion 64 of the second insulating rack 60b.
- the back wall portion 64 of the first insulating rack 60a and the back wall portion 64 of the second insulating rack 60b are located between two sub-modules 10 that are adjacent in the third direction DR3. , the spacing between two adjacent sub-modules 10 can be narrowed. Therefore, according to the power converter 100D, even when the required number of sub-modules 10 increases, the installation area can be reduced.
- Embodiment 6 A power conversion device (referred to as “power conversion device 100E”) according to Embodiment 6 will be described. Here, points different from the power conversion device 100B will be described, and redundant description will not be repeated.
- FIG. 26 is a front view of the power converter 100E.
- FIG. 27 is a side view of the power conversion device 100E.
- the power converter 100E has a plurality of submodules 10, an insulating structure 20, a plurality of support insulators 40, and a first frame 50.
- the insulating structure 20 is a plurality of insulating racks 60.
- the configuration of the power conversion device 100E is common to the configuration of the power conversion device 100B.
- the power conversion device 100E further has a reinforcing member 90. Regarding this point, the configuration of the power conversion device 100E is different from the configuration of the power conversion device 100B.
- the reinforcing member 90 connects the top surface of the insulating structure 20 (the top surface of the insulating rack 60 at the top) and the ceiling or wall of the building in which the power converter 100E is stored.
- the reinforcing member 90 is made of an insulating material.
- the insulating material is, for example, FRP or resin material.
- the reinforcing member 90 may be made of an insulating metal material.
- each of the plurality of submodules 10 is insulated from each other by the insulating structure 20 (the plurality of insulation racks 60), so there is no need to consider insulation between the power conversion devices. According to the power conversion device 100E, even when the required number of sub-modules 10 increases, efficient layout is possible and the installation area can be reduced.
- FIG. 28 is a front view of the power converter 100F.
- FIG. 29 is a side view of the power conversion device 100F.
- the power converter 100F has a plurality of submodules 10, an insulating structure 20, a plurality of support insulators 40, and a first frame 50.
- the insulating structure 20 is a plurality of insulating racks 60 .
- the configuration of the power conversion device 100F is common to the configuration of the power conversion device 100B.
- the power conversion device 100F further has suspension support members 91 .
- the power conversion device 100 ⁇ /b>F does not have the multiple support insulators 40 and the first frame 50 .
- the configuration of the power conversion device 100F is different from the configuration of the power conversion device 100B.
- the suspension support member 91 connects the upper surface of the insulating structure 20 (the upper surface of the insulating rack 60 located at the top) and the ceiling or wall surface of the building in which the power converter 100F is stored. Thereby, the power converter 100F is suspended from the ceiling or the wall of the building in which the power converter 100F is housed.
- the suspension support member 91 is made of an insulating material.
- the insulating material is, for example, FRP or resin material.
- the suspension support member 91 may be made of an insulating metal material.
- a plurality of insulating racks 60 forming the insulating structure 20 are fixed to each other, for example, by wires.
- the power converter 100F is suspended from the ceiling or wall of the building in which the power converter 100F is housed by the suspension support member 91, and is not grounded. Therefore, the power conversion device 100F is not subjected to seismic motion from the ground when an earthquake occurs, and the seismic performance is improved.
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Abstract
Description
実施の形態1に係る電力変換装置(「電力変換装置100」とする)を説明する。
電力変換装置100は、例えば、MMC(Multilevel Modular Convertor)型のHVDC(High Voltage DC)変換器である。但し、電力変換装置100は、これに限られるものではない。図1は、電力変換装置100の模式的な回路図である。図1に示されるように、電力変換装置100は、複数組の上アーム110及び下アーム120を有している。上アーム110及び下アーム120は、直列に接続されている。複数組の上アーム110及び下アーム120の各々は、並列に接続されている。上アーム110及び下アーム120の間には、トランス130が接続されている。上アーム110及び下アーム120は、直列接続されている複数のサブモジュール10を有している。
以下に、電力変換装置100の効果を説明する。
図8は、変形例に係る絶縁筐体30の分解斜視図である。図8に示されるように、絶縁筐体30は、前壁部36をさらに有していてもよい。前壁部36により、絶縁筐体30の第3方向DR3の他方端側が閉塞されている。前壁部36は、第3方向DR3における第1側壁部31、第2側壁部32、底壁部33及び上壁部34の他方端から取り外し可能になっている。前壁部36は、絶縁筐体30の内部空間にサブモジュール10が配置された後に取り付けられる。絶縁筐体30が前壁部36を有している場合、サブモジュール10に対する絶縁性をさらに高めることができる。
図9は、変形例に係る絶縁構造体20の斜視図である。図9に示されるように、絶縁構造体20は、複数の絶縁筐体30により構成されていなくてもよい。例えば、複数の絶縁部材37を組み立てることにより構成されていてもよい。なお、図9には、絶縁構造体20を構成している絶縁部材37のうちの一部のみが示されている。絶縁部材37は、第1部分37aと、第2部分37bとを有している。第1部分37aは、第1方向DR1に延在している。第2部分37bは、第1方向DR1における第1部分37aの端から、第2方向DR2に延在している。すなわち、絶縁部材37は、L字形になっている。このような絶縁部材37を組み立てることによっても、同様の絶縁構造体20が得られる。
実施の形態2に係る電力変換装置(「電力変換装置100A」とする)を説明する。ここでは、電力変換装置100と異なる点を説明し、重複する説明は繰り返さないものとする。
以下に、電力変換装置100Aの構成を説明する。
以下に、電力変換装置100Aの効果を説明する。
実施の形態3に係る電力変換装置(「電力変換装置100B」とする)を説明する。ここでは、電力変換装置100Aと異なる点を説明し、重複する説明は繰り返さないものとする。
以下に、電力変換装置100Bの効果を説明する。
図17は、変形例に係る絶縁ラック60の斜視図である。図17に示されるように、絶縁ラック60は、複数の側壁部61、底壁部62、上壁部63及び背壁部64に代えて、第1側壁部65と、第2側壁部66と、複数の仕切り壁部67と、背壁部68とを有していてもよい。
実施の形態4に係る電力変換装置(「電力変換装置100C」とする)を説明する。ここでは、電力変換装置100Bと異なる点を説明し、重複する説明は繰り返さないものとする。
以下に、電力変換装置100Cの構成を説明する。
以下に、電力変換装置100Cの効果を説明する。
実施の形態5に係る電力変換装置(「電力変換装置100D」とする)を説明する。ここでは、電力変換装置100Bと異なる点を説明し、重複する説明は繰り返さないものとする。
以下に、電力変換装置100Dの構成を説明する。
以下に、電力変換装置100Dの効果を説明する。
実施の形態6に係る電力変換装置(「電力変換装置100E」とする)を説明する。ここでは、電力変換装置100Bと異なる点を説明し、重複する説明は繰り返さないものとする。
以下に、電力変換装置100Eの構成を説明する。
以下に、電力変換装置100Eの効果を説明する。
以下に、電力変換装置100Fの構成を説明する。
以下に、電力変換装置100Fの効果を説明する。
Claims (11)
- 電力変換装置であって、
複数のサブモジュールと、
絶縁構造体とを備え、
前記複数のサブモジュールは、第1方向及び前記第1方向に直交している第2方向の少なくとも一方に沿って並んでおり、
隣り合う前記複数のサブモジュールのうちの2つの間は、前記絶縁構造体により互いに絶縁されている、電力変換装置。 - 前記絶縁構造体は、複数の絶縁筐体であり、
前記複数の絶縁筐体の各々は、間隔を空けて互いに対向している第1側壁部及び第2側壁部と、前記第1側壁部及び前記第2側壁部の下端に連なっている底壁部と、前記第1側壁部及び前記第2側壁部の上端に連なっている上壁部とを有し、
前記複数の絶縁筐体は、前記第1方向及び前記第2方向の少なくとも一方に沿って並んでおり、
前記複数のサブモジュールの各々は、前記第1側壁部、前記第2側壁部、前記底壁部及び前記上壁部により画されている空間内に配置されている、請求項1に記載の電力変換装置。 - 前記複数の絶縁筐体の各々は、前記第1側壁部、前記第2側壁部、前記底壁部及び前記上壁部の後端に連なっている背壁部をさらに有する、請求項2に記載の電力変換装置。
- 前記第2方向に延在しており、かつ前記第2方向に直交している面内に並んでいる複数の支持碍子と、
前記複数の支持碍子上に配置されている第1フレームをさらに備え、
前記複数の絶縁筐体は、前記第1フレーム上に配置されている、請求項2又は請求項3に記載の電力変換装置。 - 前記絶縁構造体は、少なくとも1つの絶縁ラックであり、
前記少なくとも1つの絶縁ラックの各々は、前記第1方向において間隔を空けて並んでいる複数の側壁部と、前記複数の側壁部の下端に連なっている底壁部と、前記複数の側壁部の上端に連なっている上壁部とを有し、
前記複数のサブモジュールの各々は、隣り合う前記複数の側壁部のうちの2つ、前記底壁部及び前記上壁部により画されている空間内に配置されている、請求項1に記載の電力変換装置。 - 前記第2方向に延在しており、かつ前記第2方向に直交している面内に並んでいる複数の支持碍子と、
前記複数の支持碍子上に配置されている第1フレームをさらに備え、
前記少なくとも1つの絶縁ラックは、前記第1フレーム上に配置されている、請求項5に記載の電力変換装置。 - 複数の第2フレームをさらに備え、
前記少なくとも1つの絶縁ラックは、前記第2方向に沿って並んでいる複数の絶縁ラックであり、
前記複数の第2フレームの各々は、隣り合う前記複数の絶縁ラックのうちの2つの間に配置されている、請求項6に記載の電力変換装置。 - 前記第1フレーム及び最も前記第1フレーム側にある前記複数の第2フレームのうちの1つは、互いに固定されており、
隣り合う前記複数の第2フレームのうちの2つは、互いに固定されている、請求項7に記載の電力変換装置。 - 前記少なくとも1つの絶縁ラックは、前記第2方向に沿って並んでいる複数の絶縁ラックであり、
前記複数の絶縁ラックの各々は、前記複数の側壁部、前記底壁部及び前記上壁部の後端に連なっている背壁部をさらに有し、
前記複数の絶縁ラックには、前記第2方向に沿って並んでいる複数の第1絶縁ラック及び複数の第2絶縁ラックが含まれており、
前記複数の第1絶縁ラックの前記背壁部は、前記複数の第2絶縁ラックの前記背壁部と対向している、請求項5に記載の電力変換装置。 - 絶縁性の材料により形成されている補強部材をさらに備え、
前記補強部材は、前記絶縁構造体と前記電力変換装置が格納される建屋の天井部又は壁面部とを接続している、請求項5に記載の電力変換装置。 - 絶縁材料により形成されている懸架支持部材をさらに備え、
前記懸架支持部材は、前記絶縁構造体と前記電力変換装置が格納される建屋の天井部又は壁面部とを接続していることにより、前記建屋の前記天井部又は前記壁面部から前記電力変換装置を吊り下げている、請求項5に記載の電力変換装置。
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JP2006254673A (ja) * | 2005-03-14 | 2006-09-21 | Meidensha Corp | 高圧インバータ装置 |
JP2011207603A (ja) * | 2010-03-30 | 2011-10-20 | Sumitomo Heavy Industries Engineering-Service Co Ltd | 天井クレーン |
JP2017022863A (ja) * | 2015-07-10 | 2017-01-26 | 株式会社日立製作所 | 電力変換装置及びその保守方法 |
WO2017168518A1 (ja) | 2016-03-28 | 2017-10-05 | 三菱電機株式会社 | 電力変換装置 |
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JP2006254673A (ja) * | 2005-03-14 | 2006-09-21 | Meidensha Corp | 高圧インバータ装置 |
JP2011207603A (ja) * | 2010-03-30 | 2011-10-20 | Sumitomo Heavy Industries Engineering-Service Co Ltd | 天井クレーン |
JP2017022863A (ja) * | 2015-07-10 | 2017-01-26 | 株式会社日立製作所 | 電力変換装置及びその保守方法 |
WO2017168518A1 (ja) | 2016-03-28 | 2017-10-05 | 三菱電機株式会社 | 電力変換装置 |
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