CN205105087U - Novel three level water -cooling power modules - Google Patents
Novel three level water -cooling power modules Download PDFInfo
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- CN205105087U CN205105087U CN201520949614.4U CN201520949614U CN205105087U CN 205105087 U CN205105087 U CN 205105087U CN 201520949614 U CN201520949614 U CN 201520949614U CN 205105087 U CN205105087 U CN 205105087U
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Abstract
The utility model provides a novel three level water -cooling power modules belongs to big power semiconductor switch technology field. The power module include the power electronic device of the female row group of left metal crate, right metal crate, pressure equipment mechanism, branch road, square liquid cooling ware, insulator and circuit. Fix on left metal crate and right metal crate through the three power cluster that is parallel to each other of pressure equipment mechanism's crimping, every power is ganged up the excessive pressure installation and is constructed, is connected female row, square liquid cooling ware, insulator crimping to power electronic component and corresponding together. The utility model discloses can reduce the equivalent inductance in this change of current return circuit, snubber circuit arranges the compactness, has reduced mutual stray inductance to improved the radiating efficiency, the compact structure of power module, bulk is little, and the equipment is simple, convenient.
Description
Technical field
The utility model belongs to semiconductor switch technical field, and provide a kind of novel three level water cooling power module, it is applicable in 3 ~ 27MVA high-power converter, can be widely used in middle pressure transmission field.
Background technology
In middle low power current transformer, employing be low power power electronic device, the application technology of device is ripe, and allowance is enough high, and failure rate is low, and the reliability of whole system is higher.But Large Copacity current transformer is owing to integrating high voltage and big current, and device is for quantity not sufficient, and stray parameter impact is large, and device heating amount is large, and heat radiation difficulty, makes the reliability of current transformer greatly reduce, and becomes the obstacle that it is popularized in an all-round way.
Utility model content
For the problems that above-mentioned Large Copacity current transformer exists, the utility model provides a kind of novel three level water cooling power module, by three level brachium pontis is integrated in separate modular, mix drive circuit again, the embodiment that a kind of component placement is more reasonable, structure is compacter, heat-sinking capability is higher is provided.
A kind of novel three level water cooling power module, comprises the power electronic device of left metal framework, right metal framework, press-loading device, branch road busbar group, square water cold heat sink, insulator and circuit.
Power electronic device comprises IGCT (integrated gate commutated thyristor) element, neutral point clamp diode, neutral point clamp resistance, inverse parallel fly-wheel diode and absorbing circuit; Absorbing circuit comprises clamp soaking reactor, clamp absorption resistance, clamp absorption diode, clamp Absorption Capacitance and clamping capacitance inverse parallel absorption resistance;
Crimp three power strings be parallel to each other by press-loading device to be fixed on left metal framework and right metal framework.Power electronic device in first power string is IGCT element, by press-loading device, branch road busbar group, IGCT element, square water cold heat sink is crimped into the first power string with insulator combination; Power electronic device in second power string is inverse parallel fly-wheel diode, by press-loading device, branch road busbar group, inverse parallel fly-wheel diode, square water cold heat sink is crimped into the second power string with insulator combination; Power electronic device in 3rd power string is clamp absorption diode and neutral point clamp diode, by press-loading device, branch road busbar group, clamp absorption diode, neutral point clamp diode, square water cold heat sink is crimped into the 3rd power string with insulator combination.Clamp absorption resistance distributes in the below of the 3rd power string; Clamp soaking reactor is distributed in the outside of left metal framework and right metal framework; Clamp Absorption Capacitance is fixed on the rear portion of the 3rd power string by branch road busbar group; Clamping capacitance absorption resistance in parallel is fixed on the two ends of clamp Absorption Capacitance; Neutral point clamp resistance is fixed on the square water cold heat sink of first power string by copper bus-bar.
Described three level water cooling power module has four class interfaces: the mechanical interface being separately fixed at the supporting insulator on left metal framework and right metal framework forming by four, for power model is fixed on cabinet; Power circuit interface, for electrical connection; The water route interface be made up of the water main pipe be fixed on left metal framework and right metal framework and the female pipe of backwater, for being connected with outer loop cooling water channel; The control circuit interface of being drawn by IGCT element, for being connected with external control system.
Described press-loading device is connected to form by spring guide, pad, disk spring, outer-hexagonal closely-pitched pressure screw and jacking block.
Described three level water cooling power module, form water main pipe and the backwater mother pipe of its water route interface, be arranged on the below of the first power string, water swivel is distributed with above water main pipe and the female pipe of backwater, fixing capillary soft tube is connected and conducting with each square water cold heat sink, clamp absorption resistance, clamp soaking reactor, forms a set of closed circulation waterway.Described three level water cooling power module, arranges the power circuit interface be made up of P phase incoming-line busbar, P phase outgoing line busbar group, M phase outgoing line busbar, N phase outgoing line busbar group and N phase incoming-line busbar at its rear portion.
Be fixed with insulating support rod between described left metal framework and right metal framework, between adjacent power string, be separated with insulating support rod mutually.Described square water cold heat sink, is connected with insulating support rod with striking out by drawing spring; On square water cold heat sink, boring is with fixing water swivel; On square water cold heat sink near non-two sides press-fited with above position, intersection place hole respectively, and process through hole in 90 °, fixedly to draw one end of spring; The other end of spring is drawn to be fixed on insulating support rod by striking out.
Described insulating support rod is pre-buried inside insulating material for an elongated metal screw, forms with the cast of the form of mould; Be fixed on striking out in the processing counterbore of insulating support rod to form with the cast of the form of mould.
The advantage of the novel three level water cooling power module that the utility model provides is: the design that have employed three unique power string datas be parallel to each other, can reduce the equivalent inductance of this commutation circuit.Also help the maintenance of power model, maintenance and element replacement simultaneously.Four class interfaces adopted, independently normally can work, not interfere with each other respective operation mutually.Adopt the mode cooling power electronic device of water-cooled, improve radiating efficiency.The compact conformation of power model, bulk is little, and assembling is simple, convenient.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of three level water cooling power module of the present utility model;
Fig. 2 is the vertical view of three level water cooling power module structure of the present utility model;
Fig. 3 is the rearview of three level water cooling power module structure of the present utility model;
Fig. 4 is the structural representation of press-loading device in three level water cooling power module of the present utility model.
In figure:
The left metal framework of 1-; 2-IGCT element; 3-inverse parallel fly-wheel diode; 4-clamp absorption diode; 5-neutral point clamp diode; 6-clamp Absorption Capacitance; 7-draws spring; 8-strikes out; The right metal framework of 9-; 10-press-loading device; 11-insulator;
12-branch road busbar group; 13-square water cold heat sink; 14-insulating support rod; 15-clamp soaking reactor; 16-water main pipe; 17-backwater mother pipe; 18-clamp absorption resistance; 19-P phase incoming-line busbar; 20-P phase outgoing line busbar group; 21-M phase outgoing line busbar; 22-N phase outgoing line busbar group; 23-N phase incoming-line busbar; 24-supporting insulator; 25-spring guide; 26-pad;
27-disk spring; 28-outer-hexagonal closely-pitched pressure screw; 29-jacking block; 30-current potential Capacitance parallel connection absorption resistance; 31-neutral point clamp resistance.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in detail.
As shown in Figure 1, be the circuit theory diagrams of novel three level water cooling power module of the present utility model.The power electronic device of described three level water cooling power module comprises IGCT (integrated gate commutated thyristor) element, neutral point clamp diode, neutral point clamp resistance, inverse parallel fly-wheel diode and absorbing circuit.Wherein, L1-L2 is clamp soaking reactor, R1-R4 is clamp absorption resistance, D1-D2 is clamp absorption diode, and C1-C4 is clamp Absorption Capacitance, and R5-R6 is clamping capacitance inverse parallel absorption resistance, D3-D4 is neutral point clamp diode, R7-R10 is neutral point clamp resistance, and D5-D8 is inverse parallel fly-wheel diode, and S1-S4 is IGCT element.IGCT is the main power power electronic device used.
Two neutral point clamp diode D3 and D4 connect, and the tie point between mark D3 and D4 is a.Four neutral point clamp resistance R7, R8, R9 and R10 series connection.Four inverse parallel sustained diode 5, D6, D7, D8 connect, and the tie point between mark D6 and D7 is b, and the tie point between mark D5 and D6 is c, and the tie point between mark D7 and D8 is d.Two neutral point clamp diodes of series connection and four neutral point clamp resistor coupled in parallel of connecting, one end is connected to c point, and one end is connected to d point.Four IGCT element S1, S2, S3 and S4 series connection.Each inverse parallel fly-wheel diode and an IGCT element in parallel.As shown in Figure 1, D5 and S1 is in parallel, and one end is connected to an e, and the other end is connected to a c; D6 and S2 is in parallel, and one end is connected to a c, and the other end is connected to a b; D7 and S3 is in parallel, and one end is connected to a b, and the other end is connected to a d; D8 and S4 is in parallel, and one end is connected to a d, and the other end is connected to a f.
Absorbing circuit comprises clamp soaking reactor, clamp absorption resistance, clamp absorption diode, clamp Absorption Capacitance and clamping capacitance inverse parallel absorption resistance.Absorbing circuit is bilateral symmetry.Left side structure, clamp soaking reactor L1 connects with clamp absorption diode D1, more in parallel with clamp absorption resistance R1, R2.One end that clamp soaking reactor L1 is connected with clamp absorption diode D1 is connected to an e, and one end that clamp absorption diode D1 is connected with resistance R1, R2 is labeled as a g.Clamp Absorption Capacitance C1 and C2 is in parallel, and one end in parallel is connected to a g, and the other end is connected to an a.Clamping capacitance inverse parallel absorption resistance R5 is connected between a g and some a.Right side structure and left side structure similar, clamp soaking reactor L2 connects with clamp absorption diode D2, more in parallel with clamp absorption resistance R3, R4.One end that clamp soaking reactor L2 is connected with clamp absorption diode D2 is connected to a f, and one end that clamp absorption diode D2 is connected with resistance R3, R4 is labeled as a h.Clamp Absorption Capacitance C3 and C4 is in parallel, and one end in parallel is connected to a h, and the other end is connected to an a.Clamping capacitance inverse parallel absorption resistance R6 is connected between a h and some a.
Fig. 2 and Fig. 3 is a kind of execution mode of the utility model three level water cooling power module.Novel three level water cooling power module comprises: the power electronic device of left metal framework 1, right metal framework 9, press-loading device 10, branch road busbar group 12, square water cold heat sink 13, insulator 11 and circuit.
Circuit power electronic device used as shown in Figure 1, to the label of power electronic device is: IGCT element 2, inverse parallel fly-wheel diode 3, clamp absorption diode 4, neutral point clamp diode 5, clamp Absorption Capacitance 6, clamp absorption resistance 18, clamp soaking reactor 15, clamping capacitance absorption resistance 30, neutral point clamp resistance 31 in parallel.
The utility model adopts left metal framework 1 and right metal framework 9 to be the support of arranged on left and right sides, crimps three power strings be parallel to each other be fixed on left metal framework 1 and right metal framework 9 by press-loading device 10.Power electronic device in first power string is IGCT element 2, by press-loading device 10 branch road busbar group 12, IGCT element 2, square water cold heat sink 13 and insulator 11 is combined and crimps into the first power string.Power electronic device in second power string is inverse parallel fly-wheel diode 3, by press-loading device 10 branch road busbar group 12, inverse parallel fly-wheel diode 3, square water cold heat sink 13 and insulator 11 is combined and crimps into the second power string.Power electronic device in 3rd power string is clamp absorption diode 4 and neutral point clamp diode 5.By press-loading device 10 branch road busbar group 12, clamp absorption diode 4, neutral point clamp diode 5, square water cold heat sink 13 and insulator 11 combined and crimp into the 3rd power string.
In the utility model, by absorbing circuit characteristics of compact layout.As shown in Figures 2 and 3, clamp absorption resistance 18 distributes in the below of the 3rd power string; Two clamp soaking reactors 15 are distributed in the outside of left metal framework 1 and right metal framework 9.Clamp Absorption Capacitance 6 is fixed on the rear portion of the 3rd power string by branch road busbar group 12, and mutual spacing, from very little, distributes compact, between connection copper bar very short, thus reduce mutual stray inductance.Clamping capacitance absorption resistance 30 in parallel is fixed on the two ends of clamp Absorption Capacitance 6.Neutral point clamp resistance 31 is fixed on the square water cold heat sink 13 of first power string by copper bus-bar.
Three level water cooling power module of the present utility model has four class interfaces: the mechanical interface being separately fixed at the supporting insulator 24 on left metal framework 1 and right metal framework 9 forming by four, for power model is fixed on cabinet; Power circuit interface, for electrical connection; The water route interface be made up of the water main pipe 16 be fixed on left metal framework 1 and right metal framework 7 and the female pipe 17 of backwater, for being connected with outer loop cooling water channel; The control circuit interface of being drawn by IGCT element 2, for being connected with external control system.
In order to avoid the mutual interference between each interface, the utility model is arranged before and after water route interface and power circuit interface, is spaced from each other.As shown in Figure 2, the water main pipe 16 of formation power model water route interface and the female pipe 17 of backwater are arranged on the below of the first power string, and the bottom space namely utilizing IGCT control circuit interface to stay fixes water main pipe 16 and the female pipe 17 of backwater.Water main pipe 16 and the female pipe 17 of backwater are distributed with some water swivels above, fixing some capillary soft tubes, be connected and conducting with each square water cold heat sink 13, clamp absorption resistance 18, clamp soaking reactor 15, form a set of closed circulation waterway, to realize the cooling of recirculated cooling water to each electron electric power element.
At the rear portion of power model, arrange the power circuit interface be made up of P phase incoming-line busbar 19, P phase outgoing line busbar group 20, M phase outgoing line busbar 21, N phase outgoing line busbar group 22 and N phase incoming-line busbar 23.As shown in Figures 2 and 3, P phase outgoing line busbar group 20 is in the side of left metal framework 1, N phase outgoing line busbar group 22, in the side of right metal framework 9, is fixed on the P phase incoming-line busbar 19 on clamp soaking reactor 15, external busbar that N phase incoming-line busbar 23 is power model respectively; Square water cold heat sink 13 in the middle of first power string is connected with branch road busbar group 12, as M phase outgoing line busbar 21.Adopt this layout designs to reduce the volume of power model, shorten the distance between absorbing circuit and IGCT, reduce the impact that circuit stray inductance causes switching process, and the circuit of power model, water route interface are separated from each other, be convenient to install, safeguard.
Owing to have employed the design of three unique power string datas be parallel to each other, branch road busbar group 12 parallel running through is made to be fitted in three power strings, in P-O commutation course, the sense of current between IGCT branch road busbar with neutral point clamp diode branch busbar is consistent and rate of change contrary, and coupling inductance between the two plays weakening to equivalent inductance.Therefore compared to the design of single tandem, the design of this three power string datas be parallel to each other (hereinafter referred to as three string datas) can reduce the equivalent inductance of this commutation circuit.Meanwhile, being designed with of this three string datas is beneficial to maintenance, maintenance.
As shown in Figure 4, press-loading device 10 is connected to form by spring guide 25, pad 26, disk spring 27, outer-hexagonal closely-pitched pressure screw 28 and jacking block 29.
In the utility model, between left metal framework 1 and right metal framework 9, be fixed with insulating support rod 14, between adjacent power string, be separated with insulating support rod 14 mutually.Square water cold heat sink 13 is by drawing spring 7 and striking out 8 and be connected with insulating support rod 14.The square water cold heat sink 13 used is aluminum alloy material, takes two sides to dispel the heat and carries out press-fiting the integration mode of power electronic device.On square water cold heat sink 13, boring is with fixing water swivel, realizes water circulation.On square water cold heat sink 13 near non-two sides press-fited with above position, intersection place hole respectively, and processing through hole in 90 °, fixedly to draw one end of spring 7, drawing the other end of spring 7 to be then fixed on insulating support rod 14 by striking out 8.
Based on various machinery and electric requirement, the insulating support rod 14 adopted in the utility model, pre-buried inside insulating material for an elongated metal screw, form with the cast of the form of mould, existing high-strength mechanical installation, also there is good electric insulating quality, adapt to the electrical design requirement of high voltage, big current.Be fixed in the processing counterbore of insulating support rod 14 strike out 8 be with the form of mould cast form, be used for fixing the one end of drawing spring 7.Draw spring 7, insulating support rod 14, strike out the design feature of 8 solve change IGCT and diode element time, because square water cold heat sink is not fixed, problem of being easily scattered.
Claims (8)
1. a three level water cooling power module, is characterized in that, comprises the power electronic device of left metal framework, right metal framework, press-loading device, branch road busbar group, square water cold heat sink, insulator and circuit;
Power electronic device comprises IGCT element, neutral point clamp diode, neutral point clamp resistance, inverse parallel fly-wheel diode and absorbing circuit; Absorbing circuit comprises clamp soaking reactor, clamp absorption resistance, clamp absorption diode, clamp Absorption Capacitance and clamping capacitance inverse parallel absorption resistance; IGCT represents integrated gate commutated thyristor;
Crimping three power strings be parallel to each other by press-loading device is fixed on left metal framework and right metal framework; Power electronic device in first power string is IGCT element, by press-loading device, branch road busbar group, IGCT element, square water cold heat sink is crimped into the first power string with insulator combination; Power electronic device in second power string is inverse parallel fly-wheel diode, by press-loading device, branch road busbar group, inverse parallel fly-wheel diode, square water cold heat sink is crimped into the second power string with insulator combination; Power electronic device in 3rd power string is clamp absorption diode and neutral point clamp diode, by press-loading device, branch road busbar group, clamp absorption diode, neutral point clamp diode, square water cold heat sink is crimped into the 3rd power string with insulator combination; Clamp absorption resistance distributes in the below of the 3rd power string; Clamp soaking reactor is distributed in the outside of left metal framework and right metal framework; Clamp Absorption Capacitance is fixed on the rear portion of the 3rd power string by branch road busbar group; Clamping capacitance absorption resistance in parallel is fixed on the two ends of clamp Absorption Capacitance; Neutral point clamp resistance is fixed on the square water cold heat sink of first power string by copper bus-bar.
2. three level water cooling power module as claimed in claim 1, it is characterized in that, described press-loading device is connected to form by spring guide, pad, disk spring, outer-hexagonal closely-pitched pressure screw and jacking block.
3. three level water cooling power module as claimed in claim 1, it is characterized in that, described three level water cooling power module has four class interfaces: the mechanical interface being separately fixed at the supporting insulator on left metal framework and right metal framework forming by four, for power model is fixed on cabinet; Power circuit interface, for electrical connection; The water route interface be made up of the water main pipe be fixed on left metal framework and right metal framework and the female pipe of backwater, for being connected with outer loop cooling water channel; The control circuit interface of being drawn by IGCT element, for being connected with external control system.
4. the three level water cooling power module as described in claim 1 or 3, it is characterized in that, described three level water cooling power module, form water main pipe and the backwater mother pipe of its water route interface, be arranged on the below of the first power string, be distributed with water swivel above water main pipe and the female pipe of backwater, fixing capillary soft tube is connected and conducting with each square water cold heat sink, clamp absorption resistance, clamp soaking reactor, forms a set of closed circulation waterway.
5. the three level water cooling power module as described in claim 1 or 3, it is characterized in that, described three level water cooling power module, arranges the power circuit interface be made up of P phase incoming-line busbar, P phase outgoing line busbar group, M phase outgoing line busbar, N phase outgoing line busbar group and N phase incoming-line busbar at its rear portion.
6. three level water cooling power module as claimed in claim 1, is characterized in that, be fixed with insulating support rod between described left metal framework and right metal framework, be separated with insulating support rod mutually between adjacent power string.
7. three level water cooling power module as claimed in claim 6, is characterized in that described square water cold heat sink is connected with insulating support rod with striking out by drawing spring; On square water cold heat sink, boring is with fixing water swivel; On square water cold heat sink near non-two sides press-fited with above position, intersection place hole respectively, and process through hole in 90 °, fixedly to draw one end of spring; The other end of spring is drawn to be fixed on insulating support rod by striking out.
8. the three level water cooling power module according to claim 6 or 7, is characterized in that, described insulating support rod, pre-buried inside insulating material for an elongated metal screw, forms with the cast of the form of mould; Be fixed on striking out in the processing counterbore of insulating support rod to form with the cast of the form of mould.
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| CN201520949614.4U CN205105087U (en) | 2015-11-25 | 2015-11-25 | Novel three level water -cooling power modules |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108809119A (en) * | 2018-08-23 | 2018-11-13 | 上海旭禾汽车电子科技有限公司 | A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT |
| CN110098748A (en) * | 2018-01-30 | 2019-08-06 | 中车株洲电力机车研究所有限公司 | Three level blocks based on integrated gate commutated thyristor |
| CN110932529A (en) * | 2019-12-17 | 2020-03-27 | 国网江苏省电力有限公司检修分公司 | Three-level power module device |
| CN112953170A (en) * | 2021-03-08 | 2021-06-11 | 清华大学 | Water-cooling high-power full-bridge unit based on crimping type IGCT |
| CN115589166A (en) * | 2022-12-01 | 2023-01-10 | 清华大学 | Three-level power module structure based on device direct string |
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2015
- 2015-11-25 CN CN201520949614.4U patent/CN205105087U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098748A (en) * | 2018-01-30 | 2019-08-06 | 中车株洲电力机车研究所有限公司 | Three level blocks based on integrated gate commutated thyristor |
| CN108809119A (en) * | 2018-08-23 | 2018-11-13 | 上海旭禾汽车电子科技有限公司 | A kind of three level large capacity water cooling unsteady flow device assemblies based on compression joint type IEGT |
| CN110932529A (en) * | 2019-12-17 | 2020-03-27 | 国网江苏省电力有限公司检修分公司 | Three-level power module device |
| CN110932529B (en) * | 2019-12-17 | 2021-03-16 | 国网江苏省电力有限公司检修分公司 | Three-level power module device |
| CN112953170A (en) * | 2021-03-08 | 2021-06-11 | 清华大学 | Water-cooling high-power full-bridge unit based on crimping type IGCT |
| CN115589166A (en) * | 2022-12-01 | 2023-01-10 | 清华大学 | Three-level power module structure based on device direct string |
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