A static var generator water-cooled power module
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN XIANDAO BELL ELECTRIC
- Filing Date
- 2025-05-15
- Publication Date
- 2026-08-07
AI Technical Summary
由于IGBT工作时会有导通损耗和开关损耗，产生大量的热量，需要进行散热，目前采用风冷技术比较多，风冷散热技术具有结构简单，成本低，但是需要做外风道，或增加空调设备
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the water-cooled power module of the static var generator described in this utility model has a more compact structure, reduces the size of the equipment, has a reasonable structure, higher assembly efficiency, and is particularly easy to maintain.
Smart Images
Figure CN224610367U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power distribution and supply technology, specifically to a water-cooled power module for a static var generator. Background Technology
[0002] Static var generators (SVG) are now widely used. The core of an SVG consists of multiple power modules connected in series. The core component of each power module is a self-commutated bridge circuit composed of insulated-gate bipolar transistors (IGBTs) and capacitors. Because IGBTs generate significant heat due to conduction and switching losses, heat dissipation is crucial. Currently, air cooling is commonly used. While air cooling is simple in structure and low in cost, it requires external air ducts or additional air conditioning equipment. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a reasonably designed and easy-to-use static var generator water-cooled power module to solve the aforementioned technical problems.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it comprises a left panel, a right panel, a cover plate, and a lower mounting bracket. The left and right panels are symmetrically arranged on the lower mounting bracket. A cover plate is suspended on the upper side of the lower mounting bracket, and the left and right sides of the lower sidewall of the cover plate are respectively connected to the left and right panels; it also includes: The capacitors are a plurality of capacitors, which are equally distributed and spaced from left to right on the front and rear sides of the lower mounting bracket, and the capacitors are located between the left panel and the right panel. The upper mounting bracket is sleeved and fixed on the outside of several capacitors, and the outer walls on both sides of the upper mounting bracket are fixedly connected to the left panel and the right panel respectively. A water-cooled radiator is suspended above the capacitor and is fixed to the left and right panels by a mounting plate. There are two water nozzles, which are respectively connected to the inlet and outlet of the water-cooled radiator. After passing through the right panel, the water nozzles are exposed on the right side of the right panel. Two bipolar transistors are symmetrically mounted on the front wall of a water-cooled radiator. Each bipolar transistor has an AC adapter bar on its upper side. A left AC adapter bar and a right AC adapter bar are connected to the left and right AC adapter bars respectively. The left and right AC adapter bars pass through the left and right panels respectively and are exposed on the outside of the left and right panels. The left and right AC adapter bars are fixed to the water-cooled radiator by insulators. A stacked busbar is disposed between the capacitor and the water-cooled heat sink, and the stacked busbar is connected to the bipolar transistor and the capacitor. An absorption capacitor is disposed on a bipolar transistor and connected to the DC positive terminal and the DC negative terminal at the lower end of the bipolar transistor. A resistor plate is fixed on an upper mounting bracket, and a power module is fixed on a lower mounting bracket. The control board is located between the left and right panels. The control board is connected to the left and right panels via a mounting base plate and a mounting bracket. The control board is connected to the water-cooled radiator, capacitors, and power modules.
[0005] Preferably, the stacked busbar comprises: The stacked positive electrode array consists of two stacked positive electrode arrays, with the upper ends of the vertical positive electrode arrays connected to two bipolar transistors respectively, and the rear ends of the horizontal positive electrode arrays and the lower ends of the vertical positive electrode arrays connected to the positive terminals of a capacitor. The stacked negative electrode array consists of two stacked negative electrode arrays, with the upper end of the vertical negative electrode array connected to the negative terminal of the lower end of the two bipolar transistors, the lower end of the horizontal negative electrode array connected to the rear end of the vertical negative electrode array by a bend, and the horizontal negative electrode array connected to the negative terminal of the upper end of the capacitor. The insulating plate comprises several insulating plates, which are respectively located between the horizontal positive poles of the stacked positive poles and the horizontal negative poles of the stacked negative poles, and between the vertical positive poles of the stacked positive poles and the vertical negative poles of the stacked negative poles.
[0006] Preferably, both the stacked positive electrode and the stacked negative electrode are made by punching, shearing and bending copper plates, and the insulating plate is made of 0.5mm thick polycarbonate.
[0007] Preferably, the lower mounting bracket, upper mounting bracket, mounting base plate on the control board, mounting bracket, left panel, cover plate, mounting plate on the water-cooled radiator, and right panel are all made of 1.5mm aluminum-zinc coated sheet by punching, shearing, and bending.
[0008] Preferably, handles are fixed on the opposite sides of both the left and right panels.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the water-cooled power module of the static var generator described in this utility model has a more compact structure, reduces the size of the equipment, has a reasonable structure, higher assembly efficiency, and is particularly easy to maintain. Attached Figure Description
[0010] Figure 1 This is a front view of the present invention.
[0011] Figure 2 This is a side view of the present invention.
[0012] Figure 3 This is a top view of the present invention.
[0013] Figure 4 These are the front view, side view, and top view of the vertical portion of the stacked positive electrode plates in this utility model.
[0014] Figure 5 This is a front view of the horizontal portion of the stacked positive electrode plates in this utility model.
[0015] Figure 6 These are the front view, side view, and top view of the stacked negative electrode plate in this utility model.
[0016] Figure 7 These are the front view, top view, and top view of the insulating plate between the stacked positive and negative poles in this utility model.
[0017] Figure 8 These are the front view and side view of the water-cooled radiator in this utility model.
[0018] Explanation of reference numerals in the attached figures: Left panel 1, Right panel 2, Cover plate 3, Lower mounting bracket 4, Capacitor 5, Upper mounting bracket 6, Water cooling radiator 7, Water nozzle 8, Bipolar transistor 9, AC adapter 10, Left AC busbar 11, Right AC busbar 12, Insulator 13, Stacked busbar 14, Stacked positive busbar 14-1, Stacked negative busbar 14-2, Insulating plate 14-3, Absorption capacitor 15, Resistance plate 16, Power module 17, Control board 18, Handle 19. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings. Example 1
[0020] like Figures 1-3 As shown, this embodiment includes a left panel 1, a right panel 2, a cover plate 3, and a lower mounting bracket 4. The left panel 1 and right panel 2 are symmetrically arranged on the lower mounting bracket 4. The cover plate 3 is suspended on the upper side of the lower mounting bracket 4. The left and right sides of the lower sidewall of the cover plate 3 are connected to the left panel 1 and right panel 2 respectively. Handles 19 are fixed to the opposite sides of the left panel 1 and right panel 2 by bolts. It also includes: The capacitor 5, there are several capacitors, and they are equally distributed from left to right on the front and rear sides of the lower mounting bracket 4, and the capacitors 5 are located between the left panel 1 and the right panel 2. The upper mounting bracket 6 is sleeved on and fixed to the outside of several capacitors 5 by bolts. The outer walls on both sides of the upper mounting bracket 6 are fixedly connected to the left panel 1 and the right panel 2 by bolts, respectively. The water-cooled radiator 7 is suspended above the capacitor 5 and is fixed to the left panel 1 and the right panel 2 by a mounting plate. Water nozzle 8, there are two water nozzles 8, and they are respectively connected to the inlet and outlet of the water-cooled radiator 7. After passing through the right panel 2, the water nozzle 8 is exposed on the right side of the right panel 2. Two bipolar transistors 9 are symmetrically mounted on the front wall of the water-cooled radiator 7. Each bipolar transistor 9 has an AC adapter 10 on its upper side. The left AC adapter 10 on the left and right sides is connected to a left AC adapter 11 and a right AC adapter 12, respectively. The left AC adapter 11 and the right AC adapter 12 pass through the left panel 1 and the right panel 2, respectively, and are exposed on the outside of the left panel 1 and the right panel 2. The left AC adapter 11 and the right AC adapter 12 are fixed to the water-cooled radiator 7 by insulators 13. The stacked busbar 14 is disposed between the capacitor 5 and the water-cooled heat sink 7, and is connected to the bipolar transistor 9 and the capacitor 5. Absorption capacitor 15 is disposed on bipolar transistor 9 and is connected to the DC positive terminal and the DC negative terminal at the lower end of bipolar transistor 9. A resistor plate 16 is fixed on an upper mounting bracket, and a power module 17 is fixed on a lower mounting bracket. The control board 18 is located between the left panel 1 and the right panel 2. The control board 18 is connected to the left panel 1 and the right panel 2 through the mounting base plate and the mounting support plate. The control board 18 is connected to the water-cooled radiator 7, the capacitor 5, and the power module 17. The lower mounting bracket 4, the upper mounting bracket 6, the mounting base plate on the control board 18, as well as the mounting plate on the left panel 1, the cover plate 3, the water-cooled radiator 7, and the right panel 2 are all made of 1.5mm aluminum-zinc coated sheet by punching, shearing, and bending. Example 2
[0021] See Figure 2 , Figure 4-8 As shown, based on Embodiment 1, the stacked busbar 14 includes: There are two stacked positive electrode arrays 14-1, and the upper end of the vertical positive electrode array is connected to two bipolar transistors 9 respectively. The rear end of the horizontal positive electrode array and the lower end of the vertical positive electrode array of the stacked positive electrode array 14-1 are connected to the positive terminal of the capacitor 5. There are two stacked negative electrode arrays 14-2, and the upper end of the vertical negative electrode array is connected to the negative terminal of the lower end of the two bipolar transistors 9. The lower end of the horizontal negative electrode array of the stacked negative electrode array 14-2 is bent and connected to the rear end of the vertical negative electrode array. The horizontal negative electrode array of the stacked negative electrode array 14-2 is connected to the negative terminal of the upper end of the capacitor 5. Insulating plate 14-3, there are several insulating plates 14-3, and they are respectively located between the horizontal positive pole of the stacked positive pole 14-1 and the horizontal negative pole of the stacked negative pole 14-2, and between the vertical positive pole of the stacked positive pole 14-1 and the vertical negative pole of the stacked negative pole 14-2. Both the stacked positive electrode 14-1 and the stacked negative electrode 14-2 are made of copper plate by punching, shearing and bending, and the insulating plate 14-3 is made of 0.5mm thick polycarbonate.
[0022] When using this utility model, first install the water-cooled radiator 7 between the left panel 1 and the right panel 2 using bolt mounting plates. Then, fix the lower mounting bracket 4 and the upper mounting bracket 6 between the left panel 1 and the right panel 2 using self-tapping screws, thus forming the basic module frame. Fix the six capacitors 5 to the lower mounting bracket 4 with bolts, and then fix the two bipolar transistors 9 to the water-cooled radiator 7 with bolts. At this time, the stacked positive terminal block 14-1 can be installed and the positive terminals of the bipolar transistors 9 and the six capacitors 5 can be connected with bolts respectively. After placing the insulating plate 14-3, the stacked negative terminal block 14-2 can be installed and the negative terminals of the bipolar transistors 9 and the negative and positive terminals of the six capacitors 5 can be connected with bolts respectively. At the same time, connect the two absorption capacitors 15 to the DC positive terminal and negative terminal set at the lower end of the insulated gate bipolar transistor 9. The AC adapter 10 is mounted on the AC output terminal of the bipolar transistor 9. The left AC adapter 11 is connected to the left AC adapter 10 by bolts. The left AC adapter 11 is fixed to the mounting plate of the water-cooled radiator 7 by insulator 13 and led out through the left panel 1. The right AC adapter 12 is connected to the right AC adapter 10 by bolts. The right AC adapter 12 is fixed to the water-cooled radiator 7 by insulator 13 and led out through the right panel 2. Install the two handles 19 onto the left panel 1 and right panel 2 respectively using self-tapping screws. Install the cover plate 3 onto the left panel 1 and right panel 2 using self-tapping screws. Install the two water cooling radiators 7 with water nozzles 8 onto the water cooling radiators 7. At this point, the unit assembly is complete.
[0023] Compared with the prior art, the beneficial effects of this specific embodiment are as follows: 1. Water cooling technology has high heat dissipation efficiency, can be used in a sealed indoor environment, prevents dust from affecting the equipment, and makes the equipment structure more compact, reducing the footprint. 2. The stacked busbar not only has a simple installation method, but also greatly reduces the inductance of the connecting busbar, significantly reducing surge voltage and ensuring that the insulated gate bipolar transistor module will not be broken down.
[0024] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A water-cooled power module for a static var generator, comprising a left panel (1), a right panel (2), a cover plate (3), and a lower mounting bracket (4), wherein the left panel (1) and the right panel (2) are symmetrically arranged on the lower mounting bracket (4), and the cover plate (3) is suspended on the upper side of the lower mounting bracket (4), the left and right sides of the lower sidewall of the cover plate (3) being connected to the left panel (1) and the right panel (2) respectively; characterized in that, It also includes: The capacitor (5) consists of several capacitors, which are equally distributed and spaced from left to right on the front and rear sides of the lower mounting bracket (4), and the capacitors (5) are located between the left panel (1) and the right panel (2). The upper mounting bracket (6) is sleeved and fixed on the outside of several capacitors (5), and the outer walls on both sides of the upper mounting bracket (6) are fixedly connected to the left panel (1) and the right panel (2) respectively. Water-cooled radiator (7), the water-cooled radiator (7) is suspended above the capacitor (5), and the water-cooled radiator (7) is fixed to the left panel (1) and the right panel (2) by a mounting plate; Water nozzle (8), there are two water nozzles (8), and they are respectively connected to the inlet and outlet of the water-cooled radiator (7). After passing through the right panel (2), the water nozzle (8) is exposed on the right side of the right panel (2). Two bipolar transistors (9) are installed symmetrically on the front side wall of the water-cooled radiator (7). Each bipolar transistor (9) has an AC adapter (10) on its upper side. The left AC adapter (10) on the left and right sides is connected to the left AC adapter (11) and the right AC adapter (12) respectively. The left AC adapter (11) and the right AC adapter (12) pass through the left panel (1) and the right panel (2) respectively, and are exposed on the outside of the left panel (1) and the right panel (2). The left AC adapter (11) and the right AC adapter (12) are fixed on the water-cooled radiator (7) by insulators (13). Stacked busbar (14), the stacked busbar (14) is disposed between capacitor (5) and water-cooled heat sink (7), and the stacked busbar (14) is connected to bipolar transistor (9) and capacitor (5); Absorption capacitor (15), wherein the absorption capacitor (15) is disposed on the bipolar transistor (9), and the absorption capacitor (15) is connected to the DC positive terminal and the negative terminal at the lower end of the bipolar transistor (9); A resistor plate (16) is fixed on the upper mounting bracket, and a power module (17) is fixed on the lower mounting bracket. The control board (18) is located between the left panel (1) and the right panel (2). The control board (18) is connected to the left panel (1) and the right panel (2) through the mounting base plate and the mounting bracket. The control board (18) is connected to the water-cooled radiator (7), the capacitor (5) and the power module (17).
2. The water-cooled power module for a static var generator according to claim 1, characterized in that: The stacked busbar (14) includes: The stacked positive electrode array (14-1) consists of two arrays, with the upper ends of the vertical positive electrode arrays connected to two bipolar transistors (9) respectively. The rear ends of the horizontal positive electrode arrays and the lower ends of the vertical positive electrode arrays of the stacked positive electrode arrays (14-1) are connected to the positive terminals of the capacitor (5). Stacked negative electrode array (14-2), there are two stacked negative electrode arrays (14-2), and the upper end of the vertical negative electrode array is connected to the negative terminal of the lower end of the two bipolar transistors (9), the lower end of the horizontal negative electrode array of the stacked negative electrode array (14-2) is bent and connected to the rear end of the vertical negative electrode array, and the horizontal negative electrode array of the stacked negative electrode array (14-2) is connected to the negative terminal of the upper end of the capacitor (5); Insulating plate (14-3), wherein there are several insulating plates (14-3), and they are respectively located between the horizontal positive pole of the stacked positive pole (14-1) and the horizontal negative pole of the stacked negative pole (14-2), and between the vertical positive pole of the stacked positive pole (14-1) and the vertical negative pole of the stacked negative pole (14-2).
3. A water-cooled power module for a static var generator according to claim 2, characterized in that: The stacked positive electrode (14-1) and stacked negative electrode (14-2) are both made by punching, shearing and bending of copper plates, and the insulating plate (14-3) is made of 0.5mm thick polycarbonate.
4. A water-cooled power module for a static var generator according to claim 1, characterized in that: The mounting base plate on the lower mounting bracket (4), upper mounting bracket (6), control board (18), mounting bracket, left panel (1), cover plate (3), water-cooled radiator (7), and right panel (2) are all made of 1.5mm aluminum-zinc coated sheet by punching, shearing and bending.
5. A water-cooled power module for a static var generator according to claim 1, characterized in that: A handle (19) is fixed on the opposite side of the left panel (1) and the right panel (2).