Power module of frequency conversion control cabinet
By dividing the cabinet of the frequency conversion control cabinet into four areas, set the DC power conversion unit, inverter unit and brake unit, and connect through the conductive parent arrangement to solve the problem of unreasonable power module layout in the existing technology. The effect of compact structure, low cost, and the equal flow of inverter units.
Patent Information
- Application Number
- CN202420782031.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The power module layout of the existing frequency converter control cabinet is unreasonable, resulting in complex structure, large space occupation, complex connection, high cost, and uneven inverter units, affecting performance.
Divide the cabinets of the frequency conversion control cabinet into four areas from left to right, set up the DC power conversion unit, two inverter units, and braking units, and connect to the conductive parent row to ensure that the length of the conductive parent rows is consistent, and the two inverse inversion is achieved. The uniform flow.
The structure of compact structure, low material cost, and two -inverse unit flow, which improves the efficiency and installation efficiency of the power module.
Smart Images
Figure CN222423485U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical equipment, in particular to a power module of a frequency conversion control cabinet. Background Art
[0002] The layout of the power module of the variable frequency control cabinet in the prior art is unreasonable, the space inside the cabinet is not well utilized, the structure is complex and not compact, and after the inverter unit and other unit devices in the power module are placed, they occupy a lot of space in the cabinet; and because of the unreasonable layout of the power module, the conductive busbars connecting the unit devices are long and the arrangement is complex, which consumes materials, has a large installation workload and high cost; and because the conductive busbars connecting the two inverter units have different lengths and different current losses, the two inverter units do not balance the current, which affects the power module from performing better performance.
[0003] Therefore, there is an urgent need to develop a power module for a frequency conversion control cabinet with a simple and compact structure, low material cost, and current sharing between two inverter units. Utility Model Content
[0004] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a power module with a simple and compact structure, low material cost and current sharing between two inverter units, aiming to solve one of the above technical problems.
[0005] A power module of a frequency conversion control cabinet is arranged in the cabinet of the frequency conversion control cabinet, comprising: a DC power conversion unit, two inverter units, a brake unit, and a plurality of conductive busbars. The cabinet is divided into a first area, a second area, a third area, and a fourth area from left to right. The DC power conversion unit is arranged in the second area, the two inverter units are arranged in the first area and the third area respectively, the brake unit is arranged in the fourth area, and the DC power conversion unit is connected to the inverter unit and the brake unit on the left and right sides respectively through the conductive busbars.
[0006] Preferably, a capacitor module is arranged above the brake unit in the fourth area, and the capacitor module is connected in parallel with the DC power conversion unit through the conductive busbar.
[0007] Preferably, the input end of the above-mentioned DC power conversion unit is arranged at the lower end, the output end of the DC power conversion unit is arranged at the upper end, the input end of the inverter unit is arranged at the upper end, the output end of the inverter unit is arranged at the lower end, the input end of the brake unit is arranged at the upper end, the output end of the brake unit is arranged at the lower end, and the output end of the DC power conversion unit is electrically connected to the input ends of the two inverter units and the input end of the brake unit respectively.
[0008] Preferably, a busbar connected to the conductive busbar and penetrating the first area, the second area, the third area and the fourth area is provided on the upper portion of the cabinet.
[0009] Preferably, the number of the DC power conversion units is three, the three DC power conversion units are arranged side by side on the left and right, and the three DC power conversion units are connected in parallel.
[0010] Preferably, the number of the above-mentioned brake units is four, and the four brake units are arranged side by side on the left and right.
[0011] Compared with the prior art, the utility model has the following advantages: the power module of a frequency conversion control cabinet of the utility model divides the cabinet body from left to right into the first area, the second area, the third area and the fourth area, and the DC power conversion unit, the two inverter units and the brake unit are respectively arranged in the four areas of the cabinet body, and the arrangement is neat, the layout is reasonable, and the space in the cabinet body is saved. The conductive busbar is short, which can save conductive busbar materials and has low cost; and the conductive busbar is simply arranged. During installation, the external power supply is connected to the DC power conversion unit, and the DC power conversion unit is DC boosted, and then connected to the inverter units on the left and right sides of the DC power conversion unit through the conductive busbar. Therefore, with such a layout, the installation work is small and the installation efficiency can be greatly improved. The two inverter units are symmetrically arranged on both sides of the DC power conversion unit. The length of the conductive busbar connecting the DC power conversion unit to the inverter units on both sides is the same, so the current loss is the same, and the two inverter units are current-balanced, which is conducive to the power module to play a better performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described with the aid of the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model.
[0013] Figure 1 The utility model is a schematic diagram of the structure of a power module of a frequency conversion control cabinet. DETAILED DESCRIPTION
[0014] The utility model is further described with reference to the following embodiments and drawings:
[0015] A power module of a frequency conversion control cabinet, such as Figure 1As shown, it is arranged in a cabinet 10 of a frequency conversion control cabinet, including: a DC power conversion unit 11, two inverter units 12, a brake unit 13, and a plurality of conductive busbars 14. The cabinet 10 is divided into a first area 15, a second area 16, a third area 17 and a fourth area 18 from left to right. The DC power conversion unit 11 is arranged in the second area 16, the two inverter units 12 are respectively arranged in the first area 15 and the third area 17, the brake unit 13 is arranged in the fourth area 18, and the DC power conversion unit 11 is respectively connected to the inverter units 12 and the brake unit 13 on the left and right sides through the conductive busbar 14.
[0016] The utility model is a power module of a frequency conversion control cabinet, which divides the cabinet 10 from left to right into a first area 15, a second area 16, a third area 17 and a fourth area 18. The DC power conversion unit 11, two inverter units 12 and a brake unit 13 are respectively arranged in the four areas of the cabinet 10, and are neatly arranged, reasonably arranged and save space in the cabinet 10. During installation, the external power supply is connected to the DC power conversion unit 11, and after the DC power conversion unit 11 is boosted by the DC power conversion unit 11, it is respectively connected to the inverter units 12 on the left and right sides of the DC power conversion unit 11 through the conductive busbar 14. Therefore, in this layout, the conductive busbar 14 is shorter, which can save the conductive busbar 14 material and has low cost; and the conductive busbar 14 is simply arranged, the installation work is small, and the installation efficiency can be greatly improved. The two inverter units 12 are symmetrically arranged on both sides of the DC power conversion unit 11, and the conductive busbar 14 connecting the DC power conversion unit 11 to the inverter units 12 on both sides has the same length, so the current loss is the same, and the two inverter units 12 are current-balanced, which is conducive to the power module to play a better performance.
[0017] Specifically, the braking unit 13 is used to pull the voltage of the conductive busbar 14 down to the rated voltage when the voltage of the conductive busbar 14 increases.
[0018] Preferably, if Figure 1 As shown, a capacitor module 19 is arranged above the brake unit 13 in the fourth area 18, and the capacitor module 19 is connected in parallel with the DC power conversion unit 11 through the conductive busbar 14. The capacitor module 19 is mainly used to reduce the average loss of the bus capacitor when the temperature rise of the bus capacitor in the DC power conversion unit 11 is too high, thereby reducing the overall temperature of the bus capacitor. The capacitor module 19 is arranged above the brake unit 13 in the fourth area 18, and the layout is reasonable, which can make full use of the space in the cabinet 10.
[0019] Preferably, if Figure 1As shown, the input end 20 of the DC power conversion unit 11 is set at the lower end, the output end 21 of the DC power conversion unit 11 is set at the upper end, the input end 22 of the inverter unit 12 is set at the upper end, the output end 23 of the inverter unit 12 is set at the lower end, the input end 24 of the brake unit 13 is set at the upper end, and the output end 25 of the brake unit 13 is set at the lower end, and the output end 21 of the DC power conversion unit 11 is electrically connected to the input ends 22 of the two inverter units 12 and the input end 24 of the brake unit 13 respectively.
[0020] The output end 21 of the DC power conversion unit 11 is arranged at the upper end, and the input end 22 of the inverter unit 12 is arranged at the upper end, so as to facilitate the electrical connection between the output end 21 of the DC power conversion unit 11 and the input ends 22 of the two inverter units 12 respectively; the input end 22 of the inverter unit 12 is arranged at the upper end, and the input end 24 of the brake unit 13 is arranged at the lower end, so as to facilitate the electrical connection between the input end 22 of the inverter unit 12 close to the brake unit 13 and the input end 24 of the brake unit 13. As can be seen from the above, the arrangement of the power module of the frequency conversion control cabinet of the utility model is conducive to the arrangement of the conductive busbar 14 between each unit module, which can save the length of the conductive busbar 14, save the material of the conductive busbar 14, and reduce the material cost; and it is conducive to the installation of the conductive busbar 14, saving the installation labor cost.
[0021] Preferably, if Figure 1 As shown, a busbar 26 connecting the conductive busbar 14 and penetrating the first area 15, the second area 16, the third area 17 and the fourth area 18 is provided at the upper part of the cabinet 10. The busbar 26 is provided at the upper part of the cabinet 10, and the conductive busbar 14 realizes the connection between the DC power conversion unit 11, the two inverter units 12 and the brake unit 13 through the busbar 26, and the layout is reasonable and beautiful.
[0022] Preferably, if Figure 1 As shown, the number of DC power conversion units 11 is three, and the three DC power conversion units 11 are arranged side by side from left to right, and the three DC power conversion units 11 are connected in parallel. The three DC power conversion units 11 are arranged side by side from left to right, with a beautiful layout, compact structure and convenient wiring. The three DC power conversion units 11 are connected in parallel to increase the output current. Of course, the number of DC power conversion units 11 can be set as needed.
[0023] Preferably, if Figure 1 As shown, the number of the brake units 13 is four, and the four brake units 13 are arranged side by side. The four brake units 13 are arranged side by side, which has a beautiful layout, compact structure and convenient wiring. Of course, the number of the brake units 13 can be set as needed.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. A power module of a frequency conversion control cabinet, arranged in a cabinet of the frequency conversion control cabinet, characterized in that: include: A DC power conversion unit, two inverter units, a brake unit, and a plurality of conductive busbars. The cabinet is divided into a first area, a second area, a third area, and a fourth area from left to right. The DC power conversion unit is arranged in the second area. The two inverter units are arranged in the first area and the third area respectively. The brake unit is arranged in the fourth area. The DC power conversion unit is connected to the inverter unit and the brake unit on the left and right sides respectively through the conductive busbars.
2. The power module of a frequency conversion control cabinet according to claim 1, characterized in that: A capacitor module is disposed above the brake unit in the fourth region, and the capacitor module is connected in parallel with the DC power conversion unit through the conductive busbar.
3. The power module of a frequency conversion control cabinet according to claim 2, characterized in that: The input end of the DC power conversion unit is arranged at the lower end, the output end of the DC power conversion unit is arranged at the upper end, the input end of the inverter unit is arranged at the upper end, the output end of the inverter unit is arranged at the lower end, the input end of the brake unit is arranged at the upper end, the output end of the brake unit is arranged at the lower end, and the output end of the DC power conversion unit is electrically connected to the input ends of the two inverter units and the input end of the brake unit respectively.
4. The power module of a frequency conversion control cabinet according to claim 3, characterized in that: The upper portion of the cabinet is provided with a busbar that passes through the first area, the second area, the third area, and the fourth area and is connected to the conductive busbar.
5. The power module of a frequency conversion control cabinet according to claim 4, characterized in that: The number of the DC power conversion units is three, the three DC power conversion units are arranged side by side on the left and right, and the three DC power conversion units are connected in parallel.
6. The power module of a frequency conversion control cabinet according to claim 5, characterized in that: The number of the brake units is four, and the four brake units are arranged side by side on the left and right sides.