CN216599437U - Power module and cascade type converter - Google Patents
Power module and cascade type converter Download PDFInfo
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- CN216599437U CN216599437U CN202123456411.6U CN202123456411U CN216599437U CN 216599437 U CN216599437 U CN 216599437U CN 202123456411 U CN202123456411 U CN 202123456411U CN 216599437 U CN216599437 U CN 216599437U
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Abstract
The utility model discloses a power component and cascade type converter, the power component includes support, power board and control panel all set up on the support, the power board includes first power board and second power board, first power board and second power board set up side by side, be provided with first rectification contravariant unit on the first power board, be provided with second rectification contravariant unit on the second power board, the control panel is connected with first rectification contravariant unit and second rectification contravariant unit electricity; the utility model provides a power component unites two into one two sets of rectification contravariant units, and two sets of rectification contravariant units share a control panel, when satisfying the same output power demand, a power component can realize two independent power component's function, has obviously reduced power component's volume, meanwhile, through putting the type converter internal plant that cascades and carry out rational overall arrangement, make full use of finite space for the whole volume of converter obviously reduces.
Description
Technical Field
The utility model relates to a power electronic equipment field, in particular to power component and cascade type converter.
Background
The cascade type high-voltage frequency converter realizes frequency conversion by cascading power units and utilizing a multi-level output technology of a phase-shifting rectification unit in series connection, can greatly reduce the withstand voltage requirement of a unit power device by the series connection of each phase unit, reduces the harmonic wave of input current, well solves the problem of motor speed regulation in a high-voltage high-power load occasion, and obtains a remarkable energy-saving effect, so that the cascade type frequency converter occupies a great application share in the high-voltage field.
The existing cascade type high-voltage frequency converter mostly adopts independent units to be connected in series, namely each unit comprises a set of complete rectification inversion unit, the cascade series number is more, the equipment volume is large, the larger the capacity is, the larger the volume is, the large volume can bring inconvenience to various aspects such as production, transportation, debugging and maintenance, meanwhile, the cost can also be increased, the cascade type frequency converter is developed for many years, and is increasingly perfect, but the volume is difficult to further reduce.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a power component and cascade type converter aims at reducing the volume of cascade type converter.
In order to achieve the above-mentioned objects,
a support;
the power board is arranged on the bracket and comprises a first power board and a second power board, the first power board and the second power board are arranged side by side, the first power board is provided with a first rectification inverter unit, and the second power board is provided with a second rectification inverter unit;
and the control panel is arranged on the support and is electrically connected with the first rectification inversion unit and the second rectification inversion unit.
Optionally, the first rectification and inversion unit and the second rectification and inversion unit are adjacent and arranged side by side.
Optionally, the first rectification and inversion unit and the second rectification and inversion unit each include a power module and a capacitor bank, the capacitor bank of the first rectification and inversion unit and the capacitor bank of the second rectification and inversion unit are arranged at an interval, and the power module of the first rectification and inversion unit and the power module of the second rectification and inversion unit are arranged between the two capacitor banks side by side.
Optionally, the power modules of the first rectification and inversion unit and the power modules of the second rectification and inversion unit are arranged along the arrangement direction of the two capacitor sets;
the first rectification inversion unit and the second rectification inversion unit further comprise relays, and the relays of the first rectification inversion unit and the relays of the second rectification inversion unit are arranged on the power board along the arrangement direction of the two capacitor sets and are respectively adjacent to one power module.
Optionally, the power assembly further includes a heat sink attached to the power module of the first rectification and inversion unit and the power module of the second rectification and inversion unit.
Optionally, the bracket has a first side plate having opposing first and second sides;
the power plate is arranged on the first side of the bracket, the positions of the first side plate, which correspond to the first rectification and inversion unit and the second rectification and inversion unit, are respectively provided with a through hole, and the first rectification and inversion unit and the second rectification and inversion unit are respectively arranged in the corresponding through holes in a penetrating manner;
the radiator is attached to the power module of the first rectification and inversion unit and the power module of the second rectification and inversion unit on the second side of the first side plate.
Optionally, the through hole includes a first sub through hole for the power module to pass through and a second sub through hole for the capacitor bank to pass through.
The utility model provides a cascade type converter, this cascade type converter includes:
the power assembly comprises a cabinet body, a power assembly, a control cabinet and a transformer; the cabinet body is provided with a first side wall and a second side wall which are arranged oppositely, the cabinet body is provided with a first space and a second space which are distributed along the direction from the first side wall to the second side wall, the control cabinet and the power assembly are arranged in the first space, and the transformer is arranged in the second space.
Optionally, the cabinet further has a third side wall and a fourth side wall arranged oppositely, and the first space/the second space has a third space and a fourth space distributed along the direction from the third side wall to the fourth side wall; wherein the content of the first and second substances,
the power assembly is arranged in the third space, the fourth space comprises a control cabinet accommodating space and a reserved space, and the control cabinet is arranged in the control cabinet accommodating space; alternatively, the first and second electrodes may be,
the power assembly is arranged in the fourth space, the third space comprises a control cabinet accommodating space and a reserved space, and the control cabinet is arranged in the control cabinet accommodating space.
Optionally, the cabinet further comprises a heat dissipation fan, and the heat dissipation fan is mounted on the surface of the cabinet body.
The utility model discloses a power component and cascade type converter, the power component includes support, power board and control panel all set up on the support, the power board includes first power board and second power board, first power board and second power board set up side by side, be provided with first rectification contravariant unit on the first power board, be provided with second rectification contravariant unit on the second power board, the control panel is connected with first rectification contravariant unit and second rectification contravariant unit electricity; the utility model provides a power component unites two into one two sets of rectification contravariant units, and two sets of rectification contravariant units share a control panel, when satisfying the same output power demand, a power component can realize two independent power component's function, has obviously reduced power component's volume, meanwhile, through putting the type converter internal plant that cascades and carry out rational overall arrangement, make full use of finite space for the whole volume of converter obviously reduces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a medium power module according to the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a medium power module according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the middle power module according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of the middle power module according to the present invention;
fig. 5 is a schematic structural diagram of an embodiment of the middle-cascade frequency converter of the present invention;
fig. 6 is a schematic structural diagram of another angle of an embodiment of the middle-stage cascade frequency converter of the present invention;
fig. 7 is a circuit diagram of the first rectification inversion unit and the second rectification inversion unit of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
110 | |
| 200 | |
300 | Side cover plate |
| 400(a) | First rectification inversion unit | 400(b) | Second |
| 410 | |
420 | |
| 430 | Relay with a |
500 | |
| 600 | |
610 | |
| 620 | |
700 | |
| 1000 | Cascade |
1100 | |
| 1110 | The |
1111 | The |
| 1112 | The fourth space | 1112(a) | Control cabinet accommodating cavity |
| 1112(b) | |
1120 | |
| 1200 | |
1300 | |
| 10 | Rectifying circuit | 20 | |
| 30 | Inverter circuit |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a power component and applied this power component's cascade type converter 1000.
In one embodiment, in conjunction with fig. 1-4, the power assembly includes a bracket 100, a power board 600, and a control board 700; the power board 600 and the control board 700 are both arranged on the support 100, the power board 600 includes a first power board 610 and a second power board 620, the first power board 610 and the second power board 620 are arranged side by side, the first power board 610 is provided with a first rectification and inversion unit 400(a), and the second power board 620 is provided with a second rectification and inversion unit 400 (b); the control board 700 is electrically connected to the first rectification and inversion unit 400(a) and the second rectification and inversion unit 400 (b).
Most of the existing cascade frequency converters 1000 adopt a plurality of independent power components connected in series, that is, each power component includes a complete set of rectification inversion unit, the cascade stage number is more, the equipment size is large, the larger the capacity is, the larger the size is, the cost is increased correspondingly, and meanwhile, the large size brings inconvenience to various aspects such as production, transportation, debugging, maintenance and the like; compared with an independent power assembly, the power assembly provided by the embodiment integrates two sets of rectification and inversion units, the two sets of rectification and inversion units share one control board 700, when the same output power requirement is met, one power assembly can realize the functions of two independent power assemblies, the occupied space of the structure is only about half of that of the prior art, the space utilization rate is greatly improved, the size of the power assembly is obviously reduced, the production cost is reduced, and the beneficial effects of cost reduction such as transportation and storage can be indirectly brought.
In this embodiment, each set of rectification and inversion unit is respectively disposed on one power board 600, which is better in heat dissipation effect than a conventional method of commonly disposing two sets of rectification and inversion units on one power board 600.
In an embodiment, in combination with fig. 1 to 4, in order to make the power module smaller, the internal components should be arranged more compactly, so that the first rectification and inversion unit 400(a) and the second rectification and inversion unit 400(b) are arranged adjacently and side by side.
In this embodiment, as shown in fig. 1 and fig. 3, optionally, the first rectification inverter unit 400(a) and the second rectification inverter unit 400(b) are arranged side by side up and down, and the overall appearance of the power assembly is thin and high, that is, the height is increased, the width is reduced, but the overall volume is reduced; at present, power components in a commonly used frequency converter are generally in a form of arranging independent power components in a row, the space occupied by all the power components in the width direction of the structure is equivalent to the width of the transformer 1300, and the width of the frequency converter is generally increased for placing a control cabinet in consideration of the safety and the convenience of operation; and when the power component that this embodiment provided is installed in cascaded type converter 1000, the high space of ability make full use of converter, be used for placing the switch board with the space that converter width direction released simultaneously, the inside space utilization of converter improves greatly, and the product volume is littleer.
In one embodiment, as shown in fig. 1, each of the first and second rectification and inversion units 400(a) and 400(b) includes a power module 420 and a capacitor set 410, the capacitor set 410 of the first rectification and inversion unit 400(a) and the capacitor set 410 of the second rectification and inversion unit 400(b) are oppositely disposed at an interval, and the power module 420 of the first rectification and inversion unit 400(a) and the power module 420 of the second rectification and inversion unit 400(b) are disposed between the two capacitor sets 410 side by side.
In a specific embodiment of this embodiment, as shown in fig. 1 and fig. 3, the capacitor sets 410 of the first rectifying and inverting unit 400(a) and the second rectifying and inverting unit 400(b) are respectively disposed at the upper and lower sides of the bracket 100 near the edges; the power modules 420 are disposed between the two capacitor banks 410 side by side, and may be disposed vertically or horizontally.
Optionally, in a specific embodiment of this embodiment, as shown in fig. 1, the power modules 420 of the first rectification and inversion unit 400(a) and the power modules 420 of the second rectification and inversion unit 400(b) are arranged along the arrangement direction of the two capacitor banks 410, and as shown in a specific embodiment in fig. 1, the capacitor banks 410 and the power modules 420 are arranged in an up-down manner.
In this embodiment, the first rectifying and inverting unit 400(a) and the second rectifying and inverting unit 400(b) each further include a relay 430, the relays 430 of the first rectifying and inverting unit 400(a) and the relays 430 of the second rectifying and inverting unit 400(b) are arranged on the power board 600 along the arrangement direction of the two capacitor sets 410, and are respectively adjacent to one power module 420, and the two relays 430 are arranged side by side.
The power assembly of the embodiment has the advantages that the arrangement of all components is very compact, and the overall size of the power assembly can be effectively reduced.
It should be noted that the above-mentioned "up" and "down" are directional indicators, and are only used to explain the relative position relationship between the components in the specific posture in the specific drawing, and when the specific posture is changed, the directional indicator is changed accordingly.
In an embodiment, referring to fig. 1 to 4, as shown in fig. 3, the power module further includes a heat sink 500, the heat sink 500 is attached to the power module 420 of the first rectification and inversion unit 400(a) and the power module 420 of the second rectification and inversion unit 400(b), the heat sink 500, the relay 430 and the capacitor set 410 are exposed in the air duct, so that the heat dissipation effect is improved, and since the power module 420 of the first rectification and inversion unit 400(a) and the power module 420 of the second rectification and inversion unit 400(b) are adjacently arranged side by side, one heat sink 500 can be shared, the number of components is reduced, and accordingly, the volume of the power module is reduced.
In one embodiment, in conjunction with fig. 1-4, the bracket 100 has a first side plate 110, the first side plate 110 having opposite first and second sides; the power board 600 is arranged on the first side, and the first rectification and inversion unit 400(a) and the second rectification and inversion unit 400(b) are arranged on the second side; the first side plate 110 has through holes at positions corresponding to the first rectification inverter unit 400(a) and the second rectification inverter unit 400(b), and each component in the first rectification inverter unit 400(a) and the second rectification inverter unit 400(b) can be respectively inserted into the corresponding through hole and welded on the device surface of the power board 600; the heat sink 500 is attached to the power module 420 of the first rectifying and inverting unit 400(a) and the power module 420 of the second rectifying and inverting unit 400(b) at the second side of the first side plate 110.
In a specific implementation of this embodiment, the through holes include a first sub-through hole for the power module 420 to pass through and a second sub-through hole for the capacitor set 410 to pass through; optionally, there may be only one first sub-through hole for two power modules 420 to pass through together, or there may be two first sub-through holes for two power modules 420 to pass through respectively; the capacitor set 410 includes a plurality of capacitors, and similarly, the number of the second sub-through holes may be one for the capacitor set 410 to pass through, and the number of the second sub-through holes may also be a plurality of, and the number of the second sub-through holes corresponds to the number of the capacitors in the capacitor set 410 for the capacitors to pass through respectively.
It can be understood that, when the sub-through holes are multiple, the supporting function of the first side plate 110 on each component is stronger, and in this embodiment, because each component is arranged through the side plate, the volume space of the side plate itself is utilized, so that it can be understood that the overall volume of the power assembly is reduced.
In an embodiment, optionally, with reference to fig. 1 to 4, the bracket 100 further has a mounting seat 200 disposed on one side of the first side plate 110, the control board 700 is disposed on the mounting seat 200, the mounting seat 200 supports the control board 700, and the control board 700 is disposed at a distance from the power board 600 and faces the power board.
In one embodiment of this embodiment, the mounting seat 200 is disposed on one side of the first side plate 110 and perpendicular to the surface of the first side plate 110, the surface of the control board 700 is parallel to the first surface and correspondingly perpendicular to the mounting seat 200, and one side of the control board 700 is disposed on the mounting seat 200 and supported by the mounting seat 200.
In this embodiment, the control board 700 and the power board 600 are spaced apart from each other to better dissipate heat, and the influence of an excessive voltage on the power board 600 on the control board 700 can be reduced.
In an embodiment, optionally, in combination with fig. 1 to 4, the power module further includes a side cover plate 300, and the side cover plate 300 covers the bracket 100 along a direction toward the control board 700 to form a sealed PCB chamber.
Alternatively, the bracket 100 and the side cover 300 are formed of two plastic open molds, which together enclose the PCB chamber to prevent dust from entering. No matter to power component itself or the whole machine of cascade type converter 1000, the plastic casing all helps reducing the ann rule distance for space utilization is higher, makes the volume of product littleer.
In addition, for a clearer description of the power module of the present invention, the internal circuit thereof is further illustrated here: as shown in fig. 7, the first rectifying and inverting unit may include a rectifying circuit 10, an intermediate capacitor link 20 and an inverting circuit 30, wherein a three-phase input end R, S, T of the rectifying circuit 10 may access a three-phase ac power through a current protection device such as a fuse, rectify the three-phase ac power into a dc power, and output the dc power to the back-end inverting circuit 30 through the intermediate bus capacitor link, and the inverting circuit 30 may invert the incoming dc power into an ac power having a corresponding amplitude and phase and output the ac power under the control of the control board. The principle and the circuit structure can refer to first rectification contravariant unit are made to second rectification contravariant unit, and it is no longer repeated here, and second rectification contravariant unit and first rectification contravariant unit two can establish ties and set up, and the anodal output of first rectification contravariant unit can be the anodal output of power board promptly, and the negative output of first rectification contravariant unit is connected with the anodal output of second rectification contravariant unit, and the negative output of second rectification contravariant unit can be the negative output of power board. Certainly, on the premise of not making creative work, a person skilled in the art also sets the first rectification inverter unit and the second rectification inverter unit in a parallel connection or a series-parallel connection combination manner, and achieves the same technical effect as the present application, which is also not described herein again.
The utility model also discloses a cascade type converter 1000, power component including foretell arbitrary embodiment.
In an embodiment, with reference to fig. 5 and 6, the cascade-type frequency converter 1000 of the present invention further includes a cabinet 1100, a control cabinet and a transformer 1300; the cabinet 1100 has a first sidewall and a second sidewall (not shown) disposed opposite to each other, the cabinet 1100 has a first space 1110 and a second space 1120 distributed along a direction from the first sidewall to the second sidewall, the control cabinet and the power module are mounted in the first space 1110, and the transformer 1300 is mounted in the second space 1120.
Taking fig. 5 and fig. 6 as an example, only for the specific postures shown in fig. 5 and fig. 6, the first space 1110 and the second space 1120 can be regarded as front-back spaces, the first space 1110 and the second space 1120 are relative, and the front-back positions of the first space 1110 and the second space 1120 can be replaced.
In an embodiment, referring to fig. 5 and 6, the cabinet 1100 further has a third side wall and a fourth side wall disposed opposite to each other, the first space 1110 has a third space 1111 and a fourth space 1112 distributed along a direction from the third side wall to the fourth side wall, the power module is disposed in the third space 1111, and the control cabinet is disposed in the fourth space 1112, because the power module disclosed in the present invention combines two sets of rectification and inversion units into one, and has a vertical arrangement structure, so that the height space of the frequency converter is fully utilized, and the space released in the width direction of the frequency converter is used for placing the control cabinet, so that it is not necessary to additionally increase the width of the frequency converter for placing the control cabinet, and the fourth space 1112 leaves a space in the height direction after receiving the control cabinet, where the space in the fourth space 1112 for receiving the control cabinet is referred to as a control cabinet receiving space 1112(a), and the left space is referred to as a reserved space 1112(b), in practice, devices can be added to the reserved space 1112(b) as needed, so that the application range of the frequency converter is expanded, and the applicability is improved. It should be noted that the height and width are described herein with respect to the specific position in the drawings, and the width refers to the length from the third sidewall to the fourth sidewall.
For the specific posture shown in fig. 5, the third space 1111 and the fourth space 1112 can be regarded as left and right spaces, the third space 1111 and the fourth space 1112 are relatively speaking, the left and right positions of the third space 1111 and the fourth space 1112 can be changed, that is, the positions of the power modules and the control cabinet can be interchanged, the power modules can be placed on the left or right, the control cabinet is placed on the right when the power modules are placed on the left, and the control cabinet is placed on the left when the power modules are placed on the right; likewise, the locations of the control cabinet accommodating space 1112(a) and the headspace 1112(b) may be interchanged.
In an embodiment, referring to fig. 5 and 6, the cascade-type frequency converter 1000 further includes a heat dissipation fan 1200, and the heat dissipation fan 1200 is installed on the surface of the cabinet 1100.
Optionally, as shown in fig. 5 and 6, the heat dissipation fan 1200 is mounted at the top of the cabinet 1100.
To sum up, the power assembly provided by the utility model combines two sets of rectification and inversion units into one, and the two sets of rectification and inversion units share one control board 700 and one radiator 500, and the overall volume of the power assembly is reduced by reasonably arranging all components in the power assembly; meanwhile, the internal devices of the cascade frequency converter 1000 are reasonably arranged, and the size spaces in three spatial directions (namely, up-down, left-right, front-back) are fully utilized, so that the whole volume of the frequency converter is obviously reduced, the beneficial effects of reducing materials, reducing cost and the like are further brought, and the production, transportation, storage and other costs can be indirectly reduced.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A power assembly, comprising:
a support;
the power board is arranged on the bracket and comprises a first power board and a second power board, the first power board and the second power board are arranged side by side, the first power board is provided with a first rectification inverter unit, and the second power board is provided with a second rectification inverter unit;
and the control panel is arranged on the support and is electrically connected with the first rectification inversion unit and the second rectification inversion unit.
2. The power assembly of claim 1, wherein the first rectifying and inverting unit and the second rectifying and inverting unit are adjacent and side-by-side.
3. The power assembly as claimed in claim 1, wherein the first rectifying and inverting unit and the second rectifying and inverting unit each include a power module and a capacitor bank, the capacitor bank of the first rectifying and inverting unit and the capacitor bank of the second rectifying and inverting unit are disposed at an interval, and the power module of the first rectifying and inverting unit and the power module of the second rectifying and inverting unit are disposed between the two capacitor banks side by side.
4. The power assembly according to claim 3, wherein the power modules of the first rectifying and inverting unit and the power modules of the second rectifying and inverting unit are arranged along the arrangement direction of the two capacitor sets;
the first rectification inversion unit and the second rectification inversion unit further comprise relays, and the relays of the first rectification inversion unit and the relays of the second rectification inversion unit are arranged on the power board along the arrangement direction of the two capacitor sets and are respectively adjacent to one power module.
5. The power assembly as claimed in claim 3, further comprising a heat sink attached to the power module of the first rectifying and inverting unit and the power module of the second rectifying and inverting unit.
6. The power assembly according to claim 5, wherein the bracket has a first side plate having opposing first and second sides;
the power plate is arranged on the first side of the bracket, the positions of the first side plate, which correspond to the first rectification and inversion unit and the second rectification and inversion unit, are respectively provided with a through hole, and the first rectification and inversion unit and the second rectification and inversion unit are respectively arranged in the corresponding through holes in a penetrating manner;
the radiator is attached to the power module of the first rectification and inversion unit and the power module of the second rectification and inversion unit on the second side of the first side plate.
7. The power assembly of claim 6, wherein the through holes comprise a first sub-through hole for the power module to pass through and a second sub-through hole for the capacitor bank to pass through.
8. A cascaded frequency converter, comprising:
a cabinet, a power assembly as claimed in any one of claims 1 to 7, a control cabinet and a transformer; the cabinet body is provided with a first side wall and a second side wall which are arranged oppositely, the cabinet body is provided with a first space and a second space which are distributed along the direction from the first side wall to the second side wall, the control cabinet and the power assembly are arranged in the first space, and the transformer is arranged in the second space.
9. The cascade-type frequency converter according to claim 8, wherein the cabinet further has third and fourth oppositely disposed side walls, and the first/second space has third and fourth spaces distributed in a direction from the third to fourth side walls; wherein the content of the first and second substances,
the power assembly is arranged in the third space, the fourth space comprises a control cabinet accommodating space and a reserved space, and the control cabinet is arranged in the control cabinet accommodating space; alternatively, the first and second electrodes may be,
the power assembly is arranged in the fourth space, the third space comprises a control cabinet accommodating space and a reserved space, and the control cabinet is arranged in the control cabinet accommodating space.
10. The cascade-type frequency converter of claim 8, further comprising a heat dissipation fan mounted to a surface of the cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123456411.6U CN216599437U (en) | 2021-12-31 | 2021-12-31 | Power module and cascade type converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123456411.6U CN216599437U (en) | 2021-12-31 | 2021-12-31 | Power module and cascade type converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216599437U true CN216599437U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123456411.6U Active CN216599437U (en) | 2021-12-31 | 2021-12-31 | Power module and cascade type converter |
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| Country | Link |
|---|---|
| CN (1) | CN216599437U (en) |
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2021
- 2021-12-31 CN CN202123456411.6U patent/CN216599437U/en active Active
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