Insulated power unit module

Abstract

The utility model provides an insulating power unit module, including power bin and capacitor bin and first cover plate and second cover plate, power bin and capacitor bin have dismounting structure on, power bin includes copper bar assembly and power capacitor component, capacitor bin includes expansion capacitor component, expansion capacitor component is connected with power capacitor component through connecting part, the bottom of power bin still has heat dissipation structure. The utility model provides an insulating power unit module through utilizing copper bar assembly and power capacitor component in power bin, can effectively satisfy the frequency conversion demand of alternating current, and through with capacitor bin using dismounting structure can be detachably installed on power bin, can effectively utilize expansion capacitor component in capacitor bin and expand the power section compatible with this insulating power unit module, satisfy 350kVA -2600kVA power section's frequency conversion demand, in addition, through adopting the design of injection moulding, can effectively reduce production and design cost, and improve insulating property to effectively guarantee security.

Description

Technical Field

[0001] This utility model relates to the field of power distribution technology, and in particular to an insulated power unit module. Background Technology

[0002] As the core component of cascaded medium-voltage frequency converters, the size and performance of the power unit have a crucial impact on the overall size and performance of the unit. The biggest design challenge for the power unit lies in heat dissipation and its size. Currently, power modules only use metal casings, resulting in slightly higher costs and manufacturing processes, as well as longer assembly times, leading to higher overall costs. Furthermore, sheet metal is susceptible to corrosion in harsh environments, and numerous safety regulations must be met during the design phase, increasing design complexity and compatibility, making it difficult to meet the needs of different power ranges. Utility Model Content

[0003] The purpose of this utility model is to solve the problems of existing power modules that use metal shells, resulting in slightly higher costs and manufacturing processes, longer assembly time, and higher overall costs. Furthermore, sheet metal is prone to corrosion in harsh environments and has many safety regulations to meet during the design process, which increases the design difficulty to some extent. In addition, it has poor compatibility and is difficult to meet the usage requirements of different power ranges. The present invention provides an insulated power unit module.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an insulated power unit module, including a power compartment and a capacitor compartment, which are detachably connected. The insulated power unit module also includes a first cover plate for sealing the power compartment and a second cover plate for sealing the power compartment and the capacitor compartment. The power compartment and the capacitor compartment have a disassembly and assembly structure. The power compartment includes a copper busbar assembly and a power capacitor assembly. The capacitor compartment includes an expansion capacitor assembly. The expansion capacitor assembly is connected to the power capacitor assembly through a connecting component. The bottom of the power compartment also has a heat dissipation structure. By utilizing the copper busbar and power capacitor components in the power compartment, the frequency conversion requirements of AC power can be effectively met. Furthermore, by detachably mounting the capacitor compartment onto the power compartment using a modular design, the expansion capacitor components within the capacitor compartment can effectively expand the power range compatible with this insulated power unit module, meeting the frequency conversion requirements for power ranges from 350kVA to 2600kVA. In addition, by using injection molding for the outer shell of the power compartment and capacitor compartment, as well as the first and second cover plates, the production and design costs of this insulated power unit module can be effectively reduced, and its insulation performance can be improved, thereby effectively ensuring its safety. Moreover, the heat dissipation structure allows for heat dissipation of the insulated power unit module, further improving its stability and safety during operation.

[0005] Furthermore, the disassembly and assembly structure includes a first mounting lug and a first locking part disposed on the power compartment, and a second mounting lug and a second locking part disposed on the capacitor compartment. The locking element passes through the first locking part and is locked within the second locking part, thus fixing the power compartment and the capacitor compartment together. When it is necessary to expand the power segment of the insulated power unit module, by using bolts, studs, and pins to pass through the first locking part and lock within the second locking part, the stability of the capacitor compartment mounted on the power compartment can be effectively ensured, and the expansion capacitor assembly in the capacitor compartment can be electrically connected to the power capacitor assembly in the power compartment, thereby realizing the operation of expanding the power segment of the insulated power unit module. Moreover, by using the first and second mounting lugs, the operation of connecting the power compartment and capacitor compartment to other components within the cabinet can be effectively realized, significantly improving the convenience of the connection operation.

[0006] Furthermore, the copper busbar assembly of the power compartment includes several first input copper busbars and second input copper busbars disposed on the power compartment, as well as a fuse. The first and second input copper busbars pass through the power compartment and are electrically connected to the power board. In the embodiment provided by this utility model, three first input copper busbars are disposed on the power compartment to form a first three-phase input copper busbar, and three second input copper busbars are disposed to form a second three-phase input copper busbar. By electrically connecting the first and second input copper busbars to external AC power equipment, and allowing AC power to be input to the power board through the first and second input copper busbars, the power board converts the AC power into DC power and then converts the DC power into AC power, thus realizing the frequency conversion operation of AC power. In addition, the use of fuses can effectively provide protection, thereby further ensuring the stability and safety of the insulated power unit module during operation.

[0007] Furthermore, the copper busbar assembly also includes a first output copper busbar and a second output copper busbar, which are electrically connected to the power board. The AC power converted by the power board is output from the insulated power unit module through the first and second output copper busbars and input to external devices within the cabinet, thereby effectively ensuring the stability of the insulated power unit module under AC power frequency conversion operation. In addition, the power board integrates components such as IGBTs (Insulated Gate Bipolar Transistors), and by stacking the power board and control board vertically within the power compartment, the space required for the power compartment can be effectively reduced, thus decreasing its size.

[0008] Furthermore, the power compartment also includes an optical fiber outlet and a programming port located between the first and second output copper busbars. By utilizing the optical fiber outlet and programming port, the control program can be effectively input into the control board, thereby effectively controlling the frequency conversion operation of the power board and collecting data generated by the insulated power unit module during operation, thus effectively ensuring the stability of the insulated power unit module during operation. In addition, the optical fiber outlet and programming port are sealed with rubber plugs to effectively ensure their airtightness.

[0009] Furthermore, the power capacitor assembly includes a plurality of power capacitors disposed within the power compartment, a plurality of first busbars for electrically connecting the power capacitors to the power board, and first clamps for mounting the power capacitors within the power compartment. In the embodiments provided by this utility model, by utilizing the power capacitors within the power compartment and electrically connecting the power capacitors to the power board via the first busbars, the operating requirements of a 50A power unit can be met. Simultaneously, the first clamps secure the power capacitors, effectively improving their installation stability in high-vibration environments and preventing poor contact or electrical faults due to loosening, thereby ensuring the long-term stable operation of the entire power unit. Furthermore, in other embodiments provided by this utility model, by replacing the power capacitors with larger ones, the operating requirements of a 75A power unit can be met.

[0010] Furthermore, the first cover plate includes a top sealing plate that snaps onto the top of the power compartment and a side sealing plate that snaps onto the side of the power compartment. The heat dissipation structure includes an air inlet located at the bottom front end of the power compartment and an air outlet located at the bottom rear end of the power compartment. By snapping the top sealing plate and side sealing plate of the first cover plate onto the top and side of the power compartment respectively, the airtightness of the power compartment can be effectively ensured. Moreover, by using the air inlet to allow cold air to enter the heat dissipation structure at the bottom of the power compartment, and by allowing the hot air generated after heat exchange to be blown out of the heat dissipation structure at the bottom of the power compartment through the air outlet, the heat dissipation requirements of the insulated power unit module can be effectively met, ensuring the heat dissipation effect and improving the stability of the insulated power unit module during operation.

[0011] Furthermore, the expansion capacitor assembly includes several first expansion capacitors and a second busbar copper bus for electrically connecting the first expansion capacitors to the power capacitor. When a 100A power unit operation requirement needs to be met, the second locking part of the capacitor compartment and the first locking part of the power compartment are first locked and fixed using bolts, studs, and pins, and the capacitor compartment and power compartment are then sealed with a second cover plate, thus completing the installation of the capacitor compartment onto the power compartment. Subsequently, the first expansion capacitors in the capacitor compartment are electrically connected to the power capacitors in the power compartment using the second busbar copper bus, which can effectively improve the current handling capacity of the insulated power unit module, thereby meeting the 100A power unit operation requirement.

[0012] Furthermore, the expanded capacitor assembly also includes several second expanded capacitors and a third busbar copper bus for electrically connecting the second expanded capacitors to the first expanded capacitor. When a 150A power unit operation requirement needs to be met, by adding second expanded capacitors in the capacitor compartment and using the third busbar copper bus to electrically connect the first and second expanded capacitors, the current handling capability of the insulated power unit module can be effectively improved, thereby meeting the 150A power unit operation requirement.

[0013] Furthermore, the second cover plate is an integrated rear cover plate that snaps onto the rear ends of the power compartment and the capacitor compartment. After the second locking part of the capacitor compartment and the first locking part of the power compartment are locked and fixed using locking components such as bolts, studs, and pins, the integrated rear cover plate snaps onto the rear ends of the power compartment and the capacitor compartment, which can effectively ensure the sealing of the power compartment and the capacitor compartment and ensure the stability of the capacitor compartment installed on the power compartment.

[0014] The beneficial effects of the insulated power unit module provided by this utility model are as follows: By utilizing the copper busbar assembly and power capacitor assembly in the power compartment, the frequency conversion requirements of AC power can be effectively met. Furthermore, by detachably installing the capacitor compartment onto the power compartment using a disassembly and assembly structure, the expansion capacitor assembly within the capacitor compartment can effectively expand the power range compatible with the insulated power unit module, meeting the frequency conversion requirements of the 350kVA-2600kVA power range. In addition, by using injection molding for the outer shell of the power compartment and capacitor compartment, as well as the first and second cover plates, the production and design costs of the insulated power unit module can be effectively reduced, and the insulation performance of the insulated power unit module can be improved, thereby effectively ensuring the safety of the insulated power unit module. Moreover, by utilizing a heat dissipation structure, the insulated power unit module can be cooled, thereby further improving the stability and safety of the insulated power unit module during operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the insulated power unit module provided by this utility model; Figure 2 A side view of the insulated power unit module provided by this utility model in 100A mode; Figure 3 A schematic diagram of the internal structure of the insulated power unit module provided by this utility model in 50A mode; Figure 4 A schematic diagram of the external structure of the insulated power unit module provided by this utility model in 50A mode; Figure 5 An internal view of the insulated power unit module provided by this utility model in 100A mode; Figure 6 An internal view of the insulated power unit module provided by this utility model in 150A mode.

[0016] In the picture: 100-Insulated Power Unit Module 10-Power compartment, 11-First locking part, 12-First hook, 13-First input copper busbar 14-Second input copper busbar, 15-Fuse, 16-First output copper busbar, 17-Second output copper busbar 18 - Fiber optic output and programming port, 191 - Power board, 192 - Control board, 193 - Power capacitor, 1931 - First clamp, 194 - First busbar copper busbar, 20 - Capacitor compartment, 21 - Second locking part 22-Second hanging ear, 23-First expansion capacitor, 24-Second busbar copper bus, 25-Second expansion capacitor, 26-Third busbar copper bus, 30-First cover plate, 31-Top sealing plate, 32-Side sealing plate, 40-Second cover plate, 51-Air inlet vent, 52-Air outlet vent. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] See Figure 1-6The present invention provides an insulated power unit module 100, which includes a power compartment 10 and a capacitor compartment 20, which are detachably connected. The insulated power unit module 100 also includes a first cover plate 30 for sealing the power compartment 10 and a second cover plate 40 for sealing the power compartment 10 and the capacitor compartment 20. The power compartment 10 and the capacitor compartment 20 have detachable structures. The power compartment 10 includes a copper busbar assembly and a power capacitor 193 assembly. The capacitor compartment 20 includes an expansion capacitor assembly, which is connected to the power capacitor 193 assembly through a connecting component. The bottom of the power compartment 10 also has a heat dissipation structure. By utilizing the copper busbar assembly and power capacitor 193 assembly in the power compartment 10, the frequency conversion requirements of AC power can be effectively met. Furthermore, by detachably mounting the capacitor compartment 20 onto the power compartment 10 using a disassembly and assembly structure, the expansion capacitor assembly within the capacitor compartment 20 can effectively expand the power range compatible with the insulated power unit module 100, meeting the frequency conversion requirements for the 350kVA-2600kVA power range. In addition, by employing injection molding for the outer shells of the power compartment 10 and capacitor compartment 20, as well as the first cover plate 30 and the second cover plate 40, the production and design costs of the insulated power unit module 100 can be effectively reduced, and the insulation performance of the insulated power unit module 100 can be improved, thereby effectively ensuring the safety of the insulated power unit module 100. Moreover, by utilizing a heat dissipation structure, the insulated power unit module 100 can be cooled, further improving the stability and safety of the insulated power unit module 100 during operation.

[0019] like Figure 2 As shown, the disassembly and assembly structure includes a first lug 12 and a first locking part 11 disposed on the power compartment 10, and a second lug 22 and a second locking part 21 disposed on the capacitor compartment 20. The locking element passes through the first locking part 11 and locks itself within the second locking part 21, thus fixing the power compartment 10 and the capacitor compartment 20 together. When it is necessary to expand the power range of the insulated power unit module 100, by using bolts, studs, and pins to pass through the first locking part 11 and lock itself within the second locking part 21, the stability of the capacitor compartment 20 installed on the power compartment 10 can be effectively ensured, and the expansion capacitor assembly within the capacitor compartment 20 can be electrically connected to the power capacitor 193 assembly within the power compartment 10, thereby realizing the expansion of the power range of the insulated power unit module 100. Furthermore, by using the first lug 12 and the second lug 22, the connection between the power compartment 10 and the capacitor compartment 20 and other components within the cabinet can be effectively realized, significantly improving the convenience of the connection operation.

[0020] like Figure 2 and Figure 3As shown, the copper busbar assembly of the power compartment 10 includes several first input copper busbars 13 and second input copper busbars 14 disposed on the power compartment 10, and a fuse 15. The first input copper busbars 13 and second input copper busbars 14 pass into the power compartment 10 and are electrically connected to the power board 191. In the embodiment provided by this utility model, the power compartment 10 is provided with three first input copper busbars 13 to form a first three-phase input copper busbar, and three second input copper busbars 14 to form a second three-phase input copper busbar. By electrically connecting the first input copper busbars 13 and second input copper busbars 14 to external AC power equipment, and allowing AC power to be input to the power board 191 through the first input copper busbars 13 and second input copper busbars 14, the power board 191 converts the AC power into DC power, and then converts the DC power into AC power, thus realizing the frequency conversion operation of AC power. In addition, the fuse 15 can effectively play a protective role, thereby further ensuring the stability and safety of the insulated power unit module 100 during operation.

[0021] like Figure 2 and Figure 3 As shown, the copper busbar assembly also includes a first output copper busbar 16 and a second output copper busbar 17, which are electrically connected to the power board 191. The AC power converted by the power board 191 is output from the insulated power unit module 100 through the first output copper busbar 16 and the second output copper busbar 17, and input to external devices within the cabinet, thereby effectively ensuring the stability of the insulated power unit module 100 for AC power frequency conversion operation. Furthermore, the power board 191 integrates components such as IGBTs (Insulated Gate Bipolar Transistors), and by stacking the power board 191 and control board 192 vertically within the power compartment 10, the space required for the power compartment 10 can be effectively reduced, thus decreasing the size of the power compartment 10.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, the power compartment 10 also includes an optical fiber outlet and a programming port 18 located between the first output copper busbar 16 and the second output copper busbar 17. By utilizing the optical fiber outlet and programming port 18, the control program can be effectively input into the control board 192, thereby effectively controlling the frequency conversion operation of the power board 191 using the control board 192, and collecting data generated by the insulated power unit module 100 during operation, thus effectively ensuring the stability of the insulated power unit module 100 during operation. Furthermore, the optical fiber outlet and programming port 18 are sealed with rubber plugs, thereby effectively ensuring the airtightness of the optical fiber outlet and programming port 18.

[0023] like Figure 3 and Figure 5As shown, the power capacitor 193 assembly includes several power capacitors 193 disposed within the power compartment 10, several first busbar copper busbars 194 for electrically connecting the power capacitors 193 to the power board 191, and first clamps 1931 for mounting the power capacitors 193 within the power compartment 10. In the embodiments provided by this utility model, by utilizing the power capacitors 193 within the power compartment 10 and electrically connecting the power capacitors 193 to the power board 191 via the first busbar copper busbars 194, the operating requirements of a 50A power unit can be met. Simultaneously, the first clamps 1931 secure the power capacitors 193, effectively improving their installation stability in high-vibration environments and preventing poor contact or electrical faults due to loosening, thereby ensuring the long-term stable operation of the entire power unit. Furthermore, in other embodiments provided by this utility model, by replacing the power capacitors 193 with larger ones, the operating requirements of a 75A power unit can be met.

[0024] like Figure 1 and Figure 4 As shown, the first cover plate 30 includes a top sealing plate 31 that fastens to the top of the power compartment 10 and a side sealing plate 32 that fastens to the side of the power compartment 10. The heat dissipation structure includes an air inlet 51 located at the bottom front end of the power compartment 10 and an air outlet 52 located at the bottom rear end of the power compartment 10. By fastening the top sealing plate 31 and the side sealing plate 32 of the first cover plate 30 to the top and side of the power compartment 10 respectively, the airtightness of the power compartment 10 can be effectively guaranteed. Furthermore, by using the air inlet 51 to allow cold air to enter the heat dissipation structure at the bottom of the power compartment 10, and by allowing the hot air formed after heat exchange to be blown out of the heat dissipation structure at the bottom of the power compartment 10 through the air outlet 52, the heat dissipation requirements of the insulated power unit module 100 can be effectively met, ensuring the heat dissipation effect and improving the stability of the insulated power unit module 100 during operation.

[0025] like Figure 2 and Figure 5 As shown, the expansion capacitor assembly includes several first expansion capacitors 23 and a second busbar copper bus 24 for electrically connecting the first expansion capacitors 23 to the power capacitor 193. When it is necessary to meet the 100A power unit operation requirement, the second locking part 21 of the capacitor compartment 20 and the first locking part 11 of the power compartment 10 are first locked and fixed using bolts, studs, and pins, and the second cover plate 40 is used to close the capacitor compartment 20 and the power compartment 10, thereby completing the operation of installing the capacitor compartment 20 on the power compartment 10. Subsequently, the first expansion capacitors 23 in the capacitor compartment 20 and the power capacitor 193 in the power compartment 10 are electrically connected using the second busbar copper bus 24, which can effectively improve the current handling capacity of the insulated power unit module 100, thereby meeting the 100A power unit operation requirement.

[0026] like Figure 6As shown, the expansion capacitor assembly also includes several second expansion capacitors 25 and a third busbar 26 for electrically connecting the second expansion capacitors 25 with the first expansion capacitor 23. When a 150A power unit operation requirement needs to be met, by adding second expansion capacitors 25 in the capacitor compartment 20 and using the third busbar 26 to electrically connect the first expansion capacitor 23 with the second expansion capacitors 25, the current handling capability of the insulated power unit module 100 can be effectively improved, thereby meeting the 150A power unit operation requirement.

[0027] like Figure 1 , Figure 5 and Figure 6 As shown, the second cover plate 40 is an integrated rear cover plate that snaps onto the rear ends of the power compartment 10 and the capacitor compartment 20. After the second locking part 21 of the capacitor compartment 20 and the first locking part 11 of the power compartment 10 are locked and fixed using locking parts such as bolts, studs and pins, the integrated rear cover plate snaps onto the rear ends of the power compartment 10 and the capacitor compartment 20, which can effectively ensure the sealing of the power compartment 10 and the capacitor compartment 20, and ensure the stability of the capacitor compartment 20 installed on the power compartment 10.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An insulated power unit module, comprising a power compartment (10) and a capacitor compartment (20), characterized in that, The power compartment (10) and capacitor compartment (20) are detachably connected; the insulated power unit module also includes a first cover plate (30) for closing the power compartment (10) and a second cover plate (40) for closing the power compartment (10) and capacitor compartment (20). The power compartment (10) and capacitor compartment (20) have a disassembly and assembly structure. The power compartment (10) includes a copper busbar assembly and a power capacitor (193) assembly. The capacitor compartment (20) includes an expansion capacitor assembly. The expansion capacitor assembly is connected to the power capacitor (193) assembly through a connecting component. The bottom of the power compartment (10) also has a heat dissipation structure.

2. The insulated power unit module as described in claim 1, characterized in that, The disassembly and assembly structure includes a first hook (12) and a first locking part (11) disposed on the power compartment (10), and a second hook (22) and a second locking part (21) disposed on the capacitor compartment (20). The locking member passes through the first locking part (11) and is locked in the second locking part (21), so that the power compartment (10) and the capacitor compartment (20) are fixedly connected.

3. The insulated power unit module as described in claim 1, characterized in that, The copper busbar assembly of the power compartment (10) includes a plurality of first input copper busbars (13) and second input copper busbars (14) disposed on the power compartment (10) and a fuse (15). The first input copper busbars (13) and second input copper busbars (14) pass into the power compartment (10) and are electrically connected to the power board (191).

4. The insulated power unit module as described in claim 3, characterized in that, The copper busbar assembly also includes a first output copper busbar (16) and a second output copper busbar (17), which are electrically connected to the power board (191).

5. The insulated power unit module as described in claim 4, characterized in that, The power compartment (10) also includes an optical fiber outlet and a programming port (18) located between the first output copper busbar (16) and the second output copper busbar (17).

6. The insulated power unit module as described in claim 3, characterized in that, The power capacitor (193) assembly includes a plurality of power capacitors (193) disposed in the power compartment (10), a plurality of first busbar copper busbars (194) for electrically connecting the power capacitors (193) to the power board (191), and a first clamp (1931) for installing the power capacitors (193) in the power compartment (10).

7. The insulated power unit module as described in claim 1, characterized in that, The first cover plate (30) includes a top sealing plate (31) fastened to the top of the power chamber (10) and a side sealing plate (32) fastened to the side of the power chamber (10). The heat dissipation structure includes an air inlet (51) disposed at the bottom front end of the power chamber (10) and an air outlet (52) disposed at the bottom rear end of the power chamber (10).

8. The insulated power unit module as described in claim 3, characterized in that, The expansion capacitor assembly includes a plurality of first expansion capacitors (23) and a second bus copper bus (24) for electrically connecting the first expansion capacitors (23) to the power capacitor (193).

9. The insulated power unit module as described in claim 8, characterized in that, The expansion capacitor assembly also includes a plurality of second expansion capacitors (25) and a third busbar (26) for electrically connecting the second expansion capacitors (25) to the first expansion capacitor (23).

10. The insulated power unit module as described in claim 1, characterized in that, The second cover plate (40) is an integrated rear cover plate that is fastened to the rear end of the power compartment (10) and the capacitor compartment (20).

Images