CN204046444U - A kind of three level IGBT converter - Google Patents
A kind of three level IGBT converter Download PDFInfo
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- CN204046444U CN204046444U CN201420531600.6U CN201420531600U CN204046444U CN 204046444 U CN204046444 U CN 204046444U CN 201420531600 U CN201420531600 U CN 201420531600U CN 204046444 U CN204046444 U CN 204046444U
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- power module
- bus bar
- module
- igbt
- laminated bus
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Abstract
The utility model discloses a kind of three level IGBT converter, comprises rectified power module, inverted power module, dc-link capacitance module, laminated bus bar and rectified current transducer and inverter current transducer; Described rectified power module is identical with the components' placement mode in inverted power module, be arranged on cabinet rear wall upper left-hand and right side respectively, dc-link capacitance module is fixedly mounted in the middle of cabinet rear wall, make rectified power module and inverted power module symmetrical relative to dc-link capacitance module; Connected by laminated bus bar between rectified power module, inverted power module, dc-link capacitance module, and rectified power module and inverted power module are also connected rectified current transducer and inverter current transducer respectively by laminated bus bar.Cabinet upper part is reserved exchanges entry/exit string holes position.Advantage of the present utility model is: the standardization achieving primary module, and structure is compacter, add ease for maintenance; And circuit stray inductance is less.
Description
Technical field
The utility model belongs to semiconductor switch technical field, designs a kind of three level IGBT converter, specifically, is that a kind of degree of modularity is higher, the three level IGBT converter that circuit stray inductance is less.
Background technology
In middle low power current transformer, many employings two level IGBT inverter structure.But two level inverse conversion structure voltage grades are low, and capacity is little, require high to electrical machine insulation, electromechanical shock is large, and voltage distortion rate is large, and current harmonic content is high.And Electro Magnetic Compatibility is bad, power device caloric value is large.So three-level current transformer equipment instead of two level current transformer equipment gradually with its more excellent performance.
Three level IGBT converter equipment is compared with two traditional level current transformers, and major advantage is: device has the forward blocking voltage ability of 2 times.The increase of level number also makes electric current in mains side current ratio two level closer to sine, and along with the increase of level number, sine is better, and power factor is higher.And then harmonic wave can be reduced and reduce switching frequency, thus system loss is reduced.Output voltage grade can also be promoted to reduce system power stress.But three-level current transformer equipment also exists some shortcomings, as needed more switching device, topology layout more complicated between these switching devices.Control algolithm is complicated.If device layout and unreasonable being easy to of cabling cause current potential imbalance problem.So the utility model has more reasonably played the advantage of three level IGBT converter in structural design.
Utility model content
For the problems referred to above, the utility model proposes a kind of three level IGBT converter, by three level IGBT brachium pontis is integrated in separate modular, mix drive circuit and dc-link capacitance module and laminated bus bar and heat-pipe radiator again, provide in the application component placement more rationally, structure is compacter, heat-sinking capability is higher.
The utility model three level IGBT converter, comprises rectified power module, inverted power module, dc-link capacitance module, laminated bus bar and rectified current transducer and inverter current transducer.
Described rectified power module is identical with the components' placement mode in inverted power module, be arranged on cabinet rear wall upper left-hand and right side respectively, dc-link capacitance module is fixedly mounted in the middle of cabinet rear wall, make rectified power module and inverted power module symmetrical relative to dc-link capacitance module.
Described laminated bus bar comprises rectified power module laminated bus bar, inverted power module laminated bus bar and dc-link capacitance module laminated bus bar, is fixedly installed in rectified power module, inverted power module and dc-link capacitance module surface respectively.Wherein, on the right side of rectified power module laminated bus bar, projecting terminal is directly connected with projecting terminal on the left of dc-link capacitance module laminated bus bar; On the left of inverted power module laminated bus bar, projecting terminal is directly connected with projecting terminal on the right side of dc-link capacitance module mould laminated bus bar.
Described rectified current transducer with and inverter current transducer be fixedly installed in respectively on the left of cabinet inwall with right side, and center sensor hole is each passed through and exchanges incoming-line busbar group and exchange outgoing line busbar group.Exchange incoming-line busbar group and exchange outgoing line busbar group and be fixed on above cabinet inwall respectively by insulator.Exchange projecting terminal on the right side of incoming-line busbar group and connect inlet wire cable, left side projecting terminal is connected to the left side projecting terminal of rectified power module laminated bus bar.Exchange projecting terminal on the left of outgoing line busbar group and be connected to the right side projecting terminal of inverted power module laminated bus bar, exchange projecting terminal on the right side of outgoing line busbar group and connect outlet cable.
Advantage of the present utility model is:
1, the utility model three level IGBT converter, by three level IGBT brachium pontis is integrated in separate modular, mix drive circuit and dc-link capacitance module and laminated bus bar and heat-pipe radiator again, component placement more rationally, structure is compacter, heat-sinking capability is higher;
2, the utility model three level IGBT converter, adopts the circuit structure of back-to-back type, makes inversion structurally identical with rectified power module, therefore achieve the standardization of primary module, add ease for maintenance; And decrease the quantity of spare part and contribute to maintenance and debugging efforts;
3, the utility model three level IGBT converter, the degree of modularity is higher, and circuit stray inductance is less, and volume compact is lightweight, and handling are convenient, are convenient to installation and transportation, can be applicable to various engineering and Application in mining occasion.
Accompanying drawing explanation
Fig. 1 is the utility model three level IGBT converter overall structure cross-sectional schematic;
Fig. 2 is the components' placement mode schematic diagram in the utility model three level IGBT converter in rectified power module and inverted power module;
Fig. 3 is the utility model three level IGBT converter heat-pipe radiator and exchanges entrance hole position, interchange position, wire hole position schematic diagram.
In figure:
1-cabinet 2-rectified power module 3-inverted power module heat-pipe radiator
4-dc-link capacitance module 5-rectified current transducer 6-inverter current transducer
7-IGBT 8-driver module 9-neutral point clamp diode
10-heat-radiating substrate 11-heat-pipe radiator 12-rectified power module laminated bus bar
13-inverted power module laminated bus bar 14-dc-link capacitance module laminated bus bar 15-exchanges incoming-line busbar group
16-exchanges outgoing line busbar group 17-insulator 18-and exchanges entrance hole position
19-exchanges wire hole position
Embodiment
The utility model three level IGBT converter equipment, comprises cabinet 1, rectified power module 2, inverted power module 3, dc-link capacitance module 4, rectified current transducer 5, inverter current transducer 6 and laminated bus bar, as shown in Figure 1.Rectified power module 2, inverted power module 3 and dc-link capacitance module 4 are arranged in cabinet 1, and adopt dull and stereotyped mounting means, be fixed on cabinet 1 rear wall side by side, and rectified power module 2, inverted power module 3 lay respectively at dc-link capacitance module 4 both sides, the circuit structure of back-to-back type is adopted between three, achieve the standardization of primary module, add ease for maintenance.And form the circuit structure of back-to-back type, make inverted power module 2 structurally identical with rectified power module 3.
Rectified power module 2 is used for line voltage being rectified into direct voltage and is sent to inverted power module 3; The energy simultaneously produced by plugging is reverse into net side voltage to frequency by inverted power module 3 and is sent to electrical network.Inverted power module 3 is used for DC power conversion to become alternating current, by conducting and the shutoff of electronic power switch, completes the function of inversion.Dc-link capacitance module, as Support Capacitor, namely maintains the constant of bus direct voltage, makes it substantially remain on certain stationary value scope; But also serve the effect of certain energy storage, flat ripple.
Above-mentioned rectified power module 2 and inverted power module 3 all have 6 IGBT7 and corresponding driver module 8 and 6 neutral point clamp diodes 9, are fixedly mounted on two pieces of heat-radiating substrates 10 respectively, as shown in Figure 2; Wherein, rectified power module 2 and inverted power module 3 adopt identical components' placement mode, and separately wherein 6 IGBT7 are respectively the first ~ six IGBT; Then wherein the first ~ three IGBT is laterally arranged on heat-radiating substrate 10 top respectively, and corresponding driver module 8 is vertically arranged with the first ~ three IGBT respectively, is positioned at below the first ~ three IGBT; Need to retain secured electrical gap between the first ~ three IGBT and corresponding 3 driver module 8.6 neutral point clamp diodes 9 are fixedly installed in the middle part of heat-radiating substrate 10, and point two arrangements are put, and often arrange 3, symmetrical up and down; The creepage spacing keeping enough gaps is needed between two simultaneously symmetrical neutral point clamp diodes 9; Four ~ six IGBT is laterally arranged on heat-radiating substrate 10 bottom respectively, and corresponding 3 driver modules 8 are vertically arranged with the four ~ six IGBT respectively, is positioned at below the four ~ six IGBT; Need to retain secured electrical gap between the four ~ six IGBT and corresponding 3 driver module 8.By above-mentioned layout ensure safe distance make heat-radiating substrate 10 area minimum in situation as far as possible and do not affect the wiring of driver module 8.Above-mentioned rectified power module 2 and inverted power module 3 are arranged on cabinet 1 rear wall upper left-hand and right side respectively by the heat-radiating substrate 10 at respective place.Rectified power module 2 is respectively connected the heat-pipe radiator 11 that is positioned at cabinet 1 outside with the heat-radiating substrate 10 at inverted power module 3 place, as shown in Figure 3, installs induced draft fans above heat-pipe radiator 11.Thus, realized the heat radiation of heat-pipe radiator 11 by external fan, the severe extreme operating condition such as any humidity, dust can be adapted to maximum capacity ensure that heat radiation efficient while.
Described laminated bus bar comprises rectified power module laminated bus bar 12, inverted power module laminated bus bar 13 and dc-link capacitance module laminated bus bar 14, be covered in rectified power module 2 respectively, inverted power module 3 and dc-link capacitance module 4 surface, and be designed with respectively and rectified power module 2, in inverted power module 3 and dc-link capacitance module 4 components and parts position of mounting hole corresponding spiro keyhole position, and then by bolt by rectified power module laminated bus bar 12, inverted power module laminated bus bar 13 and dc-link capacitance module laminated bus bar 14 respectively with rectified power module 2, inverted power module 3 and dc-link capacitance module 4 are fixed.Why stack bus bar is adopted in the utility model, mainly due to the connection row that laminated bus bar is a kind of multi-layer compound structure, as compared to traditional, heavy, time-consuming and troublesome wiring method, stack bus bar can provide modern, be easy to design and install fast and the distribution system of clear in structure; Meanwhile, laminated bus bar has low inductance, Low ESR, anti-interference, reliability is high, save space, assemble the features such as succinct, quick, can be used as the link of high-power modular.Above-mentioned rectified power module laminated bus bar 12, inverted power module laminated bus bar 13 are three multilayer laminated structure with dc-link capacitance module laminated bus bar 14, and intermediate layer is insulation board, is separated in upper strata and lower floor, ensure insulation.Wherein, on the right side of rectified power module laminated bus bar 12, projecting terminal is directly connected with projecting terminal on the left of dc-link capacitance module laminated bus bar 14; Projecting terminal on the left of inverted power module laminated bus bar 13 is directly connected with projecting terminal on the right side of dc-link capacitance module laminated bus bar 14.Thus, make dc-link capacitance module 4 and the connection bus between rectified power module 2 and inverted power module 3 the shortest, significantly reduce stray inductance therebetween, be conducive to the turn-off characteristic improving IGBT, and be convenient to change, safeguard.
What described rectified current transducer 5 and inverter current transducer 6 were used for gathering the utility model three level IGBT converter entirety respectively exchanges inlet wire and the electric current exchanging outlet, is used for as control system provides real-time current digital amount information.In the utility model rectified current transducer 5 with and inverter current transducer 6 be fixedly installed in respectively on the left of cabinet 1 inwall with right side, and rectified current transducer 5 exchanges incoming-line busbar group 15 and exchanges outgoing line busbar group 16 with being each passed through with inverter current transducer 6 centre bore.Exchange incoming-line busbar group 15 and exchange outgoing line busbar group 16 and be fixed on above cabinet 1 inwall respectively by insulator 17.Exchange projecting terminal on the right side of incoming-line busbar group 15 and connect inlet wire cable, left side projecting terminal is connected to the left side projecting terminal of rectified power module laminated bus bar 12.On the left of exchanging outgoing line busbar group 16, projecting terminal is connected to projecting terminal on the right side of inverted power module laminated bus bar 13, exchanges projecting terminal on the right side of outgoing line busbar group 16 and connects outlet cable.
The distribution entirety of the utility model three level IGBT converter equipment adopt enterprising on the mode that goes out, only in cabinet 1 end face reserved interchange entrance hole position 18 and interchange wire hole position 19, as shown in Figure 3, the utility model three level IGBT converter equipment is made can be applicable to various engineering and Application in mining occasion.
Claims (5)
1. a three level IGBT converter, comprises rectified power module, inverted power module, dc-link capacitance module, laminated bus bar and rectified current transducer and inverter current transducer; It is characterized in that:
Described rectified power module is identical with the components' placement mode in inverted power module, be arranged on cabinet rear wall upper left-hand and right side respectively, dc-link capacitance module is fixedly mounted in the middle of cabinet rear wall, make rectified power module and inverted power module symmetrical relative to dc-link capacitance module;
Described laminated bus bar comprises rectified power module laminated bus bar, inverted power module laminated bus bar and dc-link capacitance module module laminated bus bar, is fixedly installed in rectified power module, inverted power module and dc-link capacitance module surface respectively; Wherein, on the right side of rectified power module laminated bus bar, projecting terminal is directly connected with projecting terminal on the left of dc-link capacitance module laminated bus bar; Projecting terminal on the left of inverted power module laminated bus bar is directly connected with projecting terminal on the right side of dc-link capacitance module laminated bus bar;
Described rectified current transducer with and inverter current transducer be fixedly installed in respectively on the left of cabinet inwall with right side, and center sensor hole is each passed through and exchanges incoming-line busbar group and exchange outgoing line busbar group; Exchange incoming-line busbar group and exchange outgoing line busbar group and be fixed on above cabinet inwall respectively by insulator; Exchange projecting terminal on the right side of incoming-line busbar group and connect inlet wire cable, left side projecting terminal is connected to the left side projecting terminal of rectified power module laminated bus bar; Exchange projecting terminal on the left of outgoing line busbar group and be connected to the right side projecting terminal of inverted power module laminated bus bar, exchange projecting terminal on the right side of outgoing line busbar group and connect outlet cable.
2. a kind of three level IGBT converter as claimed in claim 1, is characterized in that: described rectified power module and inverted power module all have 6 IGBT and corresponding driving and 6 neutral point clamp diodes; 6 IGBT in another rectified power module and inverted power module are respectively the first ~ six IGBT; Then wherein the first ~ three IGBT is laterally arranged on heat-radiating substrate top respectively, and corresponding driver module is vertically arranged with the first ~ three IGBT respectively, is positioned at below the first ~ three IGBT; 6 neutral point clamp diodes are fixedly installed in the middle part of heat-radiating substrate, and point two arrangements are put, and often arrange 3, symmetrical up and down; Four ~ six IGBT is laterally arranged on heat-radiating substrate bottom respectively, and corresponding 3 driver modules are vertically arranged with the four ~ six IGBT respectively, are positioned at below the four ~ six IGBT.
3. a kind of three level IGBT converter as claimed in claim 2, is characterized in that: have electric clearance between described first ~ three IGBT and corresponding 3 driver module; Between two neutral point clamp diodes symmetrical in 6 neutral point clamp diodes, there is creepage spacing; Between four ~ six IGBT and corresponding 3 drives, there is electric clearance.
4. a kind of three level IGBT converter as claimed in claim 1, it is characterized in that: described cabinet left and right sidewall is installed and determined insulator, left and right sides insulated terminal lays respectively at and exchanges between incoming-line busbar group and rack left side wall, exchanges between outgoing line busbar group and rack right side wall.
5. a kind of three level IGBT converter as claimed in claim 1, is characterized in that: described cabinet end face is reserved to be exchanged entrance hole position and exchanges wire hole position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531600.6U CN204046444U (en) | 2014-09-16 | 2014-09-16 | A kind of three level IGBT converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531600.6U CN204046444U (en) | 2014-09-16 | 2014-09-16 | A kind of three level IGBT converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046444U true CN204046444U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531600.6U Expired - Fee Related CN204046444U (en) | 2014-09-16 | 2014-09-16 | A kind of three level IGBT converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204046444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384864A (en) * | 2018-12-27 | 2020-07-07 | 核工业西南物理研究院 | Heavy-current positive and negative bridge parallel converter |
-
2014
- 2014-09-16 CN CN201420531600.6U patent/CN204046444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384864A (en) * | 2018-12-27 | 2020-07-07 | 核工业西南物理研究院 | Heavy-current positive and negative bridge parallel converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20190916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |