CN104201867A - Three-level IGBT power cabinet based on heat pipe radiator - Google Patents
Three-level IGBT power cabinet based on heat pipe radiator Download PDFInfo
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- CN104201867A CN104201867A CN201410471616.7A CN201410471616A CN104201867A CN 104201867 A CN104201867 A CN 104201867A CN 201410471616 A CN201410471616 A CN 201410471616A CN 104201867 A CN104201867 A CN 104201867A
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Abstract
The invention discloses a three-level IGBT power cabinet based on a heat pipe radiator. The three-level IGBT power cabinet comprises a rectification power module, an inverting power module, a direct-current bus capacitor module, laminated busbars, a rectifying current sensor and an inverting current sensor. Elements of the rectification power module and inverting power module are the same in arrangement manners and are mounted on the left and right sides of the upper portion of the rear side wall of a cabinet body respectively; the direct-current bus capacitor module is fixedly mounted in the middle of the rear side wall of the cabinet body, and the rectification power module and the inverting power module are symmetrical about the direct-current bus capacitor module; the rectification power module, the inverting power module and the direct-current bus capacitor module are connected through the laminated busbars, and the rectification power module and the inverting power module are connected to the rectifying current sensor and the inverting current sensor respectively. The cabinet body is pre-provided with an alternate-current incoming/discharging wire hole position. The cabinet has the advantages that the standardization of a main module is implemented, the structure is more compact, the maintenance is simplified, the efficiency is improved through the heat pipe radiating manner, and the circuit stray inductance is reduced.
Description
Technical field
The invention belongs to semiconductor switch technical field, design a kind of three level IGBT power cabinets based on heat-pipe radiator, specifically, is that a kind of degree of modularity is higher, circuit stray inductance three level IGBT power cabinets still less.
Background technology
In middle low power current transformer, adopt two level IGBT inverter structure more.But two level inverse conversion structure voltage grades are low, and capacity is little, high to electrical machine insulation requirement, 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 has replaced two level current transformer equipment gradually with its more excellent performance.
Three level IGBT current transformer equipment are 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 the more approaching sine of electric current in mains side current ratio two level, and along with the increase of level number, sine is better, and power factor is higher.And then can reduce harmonic wave and reduce switching frequency, thereby system loss is reduced.Can also promote output voltage grade and reduce system power stress.But also there are some shortcomings in three-level current transformer equipment, switching device as more in needs, topology layout more complicated between these switching devices.Control algolithm complexity.Be easy to cause current potential imbalance problem if device layout and cabling be unreasonable.So the present invention has more reasonably brought into play the advantage of three level IGBT current transformers in structural design.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of three level IGBT power cabinets based on heat-pipe radiator, by three level IGBT brachium pontis are focused in separate modular, mix again drive circuit and dc-link capacitance module and laminated bus bar and heat-pipe radiator, the design that component placement is more reasonable, structure is compacter, radiating efficiency is higher is provided in application.
A kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention,
Described rectified power module is identical with the components and parts layout type in inverted power module, be arranged on respectively cabinet rear wall upper left-hand and right side, dc-link capacitance module is fixedly mounted in the middle of cabinet rear wall, makes rectified power module and inverted power module symmetrical with respect 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 respectively rectified power module, inverted power module and dc-link capacitance module surface.Wherein, rectified power module laminated bus bar right side is stretched out terminal and is directly stretched out terminal with dc-link capacitance module laminated bus bar left side and be connected; Inverted power module laminated bus bar left side is stretched out terminal and is directly stretched out terminal with dc-link capacitance module mould laminated bus bar right side and be connected.
Described rectified current transducer with and inverter current transducer be fixedly installed in respectively cabinet inwall left side and right side, and center sensor hole is respectively through exchanging incoming-line busbar group and exchanging outgoing line busbar group.Exchange incoming-line busbar group and exchange outgoing line busbar group and be fixed on above cabinet inwall by insulator respectively.Exchange incoming-line busbar group right side external part sub-connection inlet wire cable, left side external part sub-connection is stretched out terminal to the left side of rectified power module laminated bus bar.Exchange outgoing line busbar group left side external part sub-connection and stretch out terminal to the right side of inverted power module laminated bus bar, exchange outgoing line busbar group right side external part sub-connection outlet cable.
Described rectified power module and inverted power module are respectively arranged on cabinet by a heat-radiating substrate; Rectified power module is respectively connected a heat-pipe radiator that is positioned at cabinet outside with the heat-radiating substrate at inverted power module place, and cooling fan is installed in heat-pipe radiator top or below.
Advantage of the present invention is:
1, a kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention, by three level IGBT brachium pontis are integrated in separate modular, mix drive circuit and dc-link capacitance module and laminated bus bar and heat-pipe radiator, component placement more rationally, structure is compacter, radiating efficiency is higher again;
2, a kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention, adopt the circuit structure of formula back-to-back, make inversion structurally identical with rectified power module, have therefore realized the standardization of primary module, have increased ease for maintenance; And reduce the quantity of spare part and contributed to maintenance and debugging work;
3, a kind of main power device of three level IGBT power cabinets based on heat-pipe radiator of the present invention adopts heat pipe heat radiation, heat-pipe radiator has the advantage of aluminium radiator and copper radiator concurrently, can realize the high efficiency and heat radiation under natural conditions, in use also be provided with the blower fan with thermostat simultaneously, the too high limit of ambient temperature starts blower fan afterwards automatically, and this has just ensured that power device is in the long-term specified operation far below under its limiting condition.And, noiselessness when heat-pipe radiator normally moves, equipment dust is few, and this brings great convenience while all maintenance to attendant.
4, a kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention, the degree of modularity is higher, circuit stray inductance still less, volume compact, lightweight, handling are convenient, are convenient to installation and transportation, can be applicable to various engineerings and application scenario, mine.
Brief description of the drawings
Fig. 1 is a kind of three level IGBT power cabinet overall structure cross-sectional schematic based on heat-pipe radiator of the present invention;
Fig. 2 is the components and parts layout type schematic diagram in rectified power module and inverted power module in a kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention;
Fig. 3 is a kind of three level IGBT power cabinet heat-pipe radiators based on heat-pipe radiator of the present invention and exchanges entrance hole position, exchanges 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
A kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention, comprise 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 side by side cabinet 1 rear wall, and rectified power module 2, inverted power module 3 lay respectively at dc-link capacitance module 4 both sides, between three, adopt the circuit structure of formula back-to-back, realize the standardization of primary module, increased ease for maintenance.And form the circuit structure of formula back-to-back, make inverted power module 2 structurally identical with rectified power module 3.
Rectified power module 2 is used for that line voltage is rectified into direct voltage and is sent to inverted power module 3; The energy simultaneously plugging being produced 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 direct current to be transformed into alternating current, by conducting and the shutoff of electronic power switch, completes the function of inversion.Dc-link capacitance module, as Support Capacitor, maintains the constant of bus direct voltage, makes it substantially remain on certain stationary value scope; But also certain energy storage, the effect of flat ripple are played.
Rectified power module 2 all has 6 IGBT7 and corresponding 8 and 6 neutral point clamp diodes 9 of driver module with inverted power module 3, is fixedly mounted on respectively on two heat-radiating substrates 10, as shown in Figure 2; Wherein, rectified power module 2 adopts identical components and parts layout type with inverted power module 3, and separately wherein 6 IGBT7 are respectively the first～six IGBT; Wherein the first～three IGBT is laterally arranged on respectively heat-radiating substrate 10 tops, and corresponding driver module 8 vertically arranges with the first～three IGBT respectively, is positioned at the first～three IGBT below; Between the first～three IGBT and corresponding 3 driver modules 8, need to retain secured electrical gap.6 neutral point clamp diodes 9 are fixedly installed in the middle part of heat-radiating substrate 10, and points two arrange and put, and 3 of every rows are symmetrical up and down; 9 simultaneously symmetrical of two neutral point clamp diodes need to keep the creepage spacing in enough gaps; The four～six IGBT is laterally arranged on respectively heat-radiating substrate 10 bottoms, and corresponding 3 driver modules 8 vertically arrange with the four～six IGBT respectively, is positioned at the four～six IGBT below; Between the four～six IGBT and corresponding 3 driver modules 8, need to retain secured electrical gap.By above-mentioned layout ensure safe distance make in situation heat-radiating substrate 10 areas minimum and do not affect the wiring of driver module 8 as far as possible.Above-mentioned rectified power module 2 and inverted power module 3 are arranged on cabinet 1 rear wall upper left-hand and right side by the heat-radiating substrate 10 at place separately respectively.Rectified power module 2 is respectively connected a heat-pipe radiator 11 that is positioned at cabinet 1 outside with the heat-radiating substrate 10 at inverted power module 3 places, and as shown in Figure 3, cooling fan is installed in heat-pipe radiator 11 tops or below.Heat-pipe radiator has heat-sinking capability by force and the high advantage of cost performance.Under equal thermal resistance condition, heat-pipe radiator consumable material is only the half of aluminium (copper) entity radiator, and compares water cooling equipment and reduced water circuit system equipment.After IGBT moves, thermal source close contact thermotube wall absorbs heat, and dielectric fluid (water) evaporation becomes steam and spreads along pipeline; To press-fiting gelled condensation segment, steam-condensation Cheng Shui, discharges the latent heat of vaporization; Under the effect of gravity, water returns evaporation section.So just complete the duty cycle of a heat transfer.As long as the liquid evaporation that carries out of inside heat pipe, vapor flow, steam condensation, condensation water reflux, 4 working cycle process are not destroyed, heat pipe will be continuously from a large amount of heat of thermal source transmission to cold junction.This does not need outer power to realize, but drives by the gravity of surplus (steam pressure difference) in conducting heat and dielectric fluid.In order to increase condensation segment condensation effect, the present invention also realizes the heat radiation of heat-pipe radiator 11 by external fan is installed, and has ensured that the efficient while of heat radiation can adapt to the severe extreme operating conditions such as any humidity, dust at maximum capacity.
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 respectively rectified power module 2, inverted power module 3 and dc-link capacitance module 4 surfaces, 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 fixing.In the present invention, why adopt stack bus bar, a kind of connection row of multi-layer compound structure mainly due to laminated bus bar, compare with the wiring method of trouble with traditional, heavy, time-consuming, that stack bus bar can provide is 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 and dc-link capacitance module laminated bus bar 14 are three stack structures layer by layer, and intermediate layer is insulation board, and upper strata and lower floor are separated, and ensures to insulate.Wherein, rectified power module laminated bus bar 12 right sides are stretched out terminal and are directly stretched out terminal with dc-link capacitance module laminated bus bar 14 left sides and be connected; The terminal that stretches out in inverted power module laminated bus bar 13 left sides directly stretches out terminal with dc-link capacitance module laminated bus bar 14 right sides and is connected.Thus, make the connection bus between dc-link capacitance module 4 and rectified power module 2 and inverted power module 3 the shortest, effectively reduced stray inductance therebetween, be conducive to improve the turn-off characteristic of IGBT, and be convenient to change, safeguard.
What described rectified current transducer 5 and inverter current transducer 6 were used for respectively gathering a kind of three level IGBT power cabinet entirety based on heat-pipe radiator of the present invention exchanges inlet wire and the electric current that exchanges outlet, is used for providing real-time current digital amount information for control system.In the present invention rectified current transducer 5 with and inverter current transducer 6 be fixedly installed in respectively cabinet 1 inwall left side and right side, and rectified current transducer 5 with pass and exchange incoming-line busbar group 15 and exchange outgoing line busbar group 16 respectively with inverter current transducer 6 centre bores.Exchange incoming-line busbar group 15 and exchange outgoing line busbar group 16 and be fixed on above cabinet 1 inwall by insulator 17 respectively.Exchange incoming-line busbar group 15 right side external part sub-connection inlet wire cables, left side external part sub-connection is stretched out terminal to the left side of rectified power module laminated bus bar 12.Exchange outgoing line busbar group 16 left side external part sub-connections and stretch out terminal to inverted power module laminated bus bar 13 right sides, exchange outgoing line busbar group 16 right side external part sub-connection outlet cables.
The distribution entirety of a kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention adopts the mode going out on enterprising, only in reserved entrance hole position 18 and the interchange wire hole position 19 of exchanging of cabinet 1 end face, as shown in Figure 3, make a kind of three level IGBT power cabinets based on heat-pipe radiator of the present invention can be applicable to various engineerings and application scenario, mine.
Claims (4)
1. three level IGBT power cabinets based on heat-pipe radiator, comprise 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 and parts layout type in inverted power module, be arranged on cabinet rear wall upper left-hand and right side by a heat-radiating substrate respectively, rectified power module is respectively connected a heat-pipe radiator with the heat-radiating substrate at inverted power module place, and cooling fan is installed in heat-pipe radiator top or below.Dc-link capacitance module is fixedly mounted in the middle of cabinet rear wall, makes rectified power module and inverted power module symmetrical with respect 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 respectively rectified power module, inverted power module and dc-link capacitance module surface; Wherein, rectified power module laminated bus bar right side is stretched out terminal and is directly stretched out terminal with dc-link capacitance module laminated bus bar left side and be connected; The terminal that stretches out in inverted power module laminated bus bar left side directly stretches out terminal with dc-link capacitance module laminated bus bar right side and is connected;
Described rectified current transducer with and inverter current transducer be fixedly installed in respectively cabinet inwall left side and right side, and center sensor hole is respectively through exchanging incoming-line busbar group and exchanging outgoing line busbar group; Exchange incoming-line busbar group and exchange outgoing line busbar group and be fixed on above cabinet inwall by insulator respectively; Exchange incoming-line busbar group right side external part sub-connection inlet wire cable, left side external part sub-connection is stretched out terminal to the left side of rectified power module laminated bus bar; Exchange outgoing line busbar group left side external part sub-connection and stretch out terminal to the right side of inverted power module laminated bus bar, exchange outgoing line busbar group right side external part sub-connection outlet cable.
2. a kind of three level IGBT power cabinets based on heat-pipe radiator 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; Wherein the first～three IGBT is laterally arranged on respectively heat-radiating substrate top, and corresponding driver module vertically arranges with the first～three IGBT respectively, is positioned at the first～three IGBT below; 6 neutral point clamp diodes are fixedly installed in the middle part of heat-radiating substrate, and points two arrange and put, and 3 of every rows are symmetrical up and down; The four～six IGBT is laterally arranged on respectively heat-radiating substrate bottom, and corresponding 3 driver modules vertically arrange with the four～six IGBT respectively, is positioned at the four～six IGBT below.
3. a kind of three level IGBT power cabinets based on heat-pipe radiator as claimed in claim 2, is characterized in that: between described the first～three IGBT and corresponding 3 driver modules, have electric clearance; In 6 neutral point clamp diodes, between symmetrical two neutral point clamp diodes, there is creepage spacing; Between the four～six IGBT and corresponding 3 drivings, there is electric clearance.
4. a kind of three level IGBT power cabinets based on heat-pipe radiator 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.
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| CN201410471616.7A CN104201867B (en) | 2014-09-16 | 2014-09-16 | Three-level IGBT power cabinet based on heat pipe radiator |
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| CN201410471616.7A CN104201867B (en) | 2014-09-16 | 2014-09-16 | Three-level IGBT power cabinet based on heat pipe radiator |
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| CN104201867A true CN104201867A (en) | 2014-12-10 |
| CN104201867B CN104201867B (en) | 2017-02-08 |
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| CN105098531A (en) * | 2015-09-23 | 2015-11-25 | 上海电科电器科技有限公司 | Connector of switch |
| CN105958806A (en) * | 2016-05-31 | 2016-09-21 | 中电普瑞科技有限公司 | High-voltage sub-module based on MMC circuit topology |
| CN109245556A (en) * | 2018-08-31 | 2019-01-18 | 西安中车永电电气有限公司 | A kind of diesel locomotive high-power loop circuit heat pipe power module and its mirror-image structure |
| CN110323954A (en) * | 2019-08-08 | 2019-10-11 | 中车青岛四方车辆研究所有限公司 | Three level traction power modules and inverter circuit based on SiC power device |
| CN113497563A (en) * | 2021-06-22 | 2021-10-12 | 北京机械设备研究所 | Three-level power module and three-phase inverter system |
| CN113659850A (en) * | 2021-08-18 | 2021-11-16 | 中车青岛四方车辆研究所有限公司 | Inversion module and high-frequency auxiliary converter equipment with same |
| CN113659851A (en) * | 2021-08-18 | 2021-11-16 | 中车青岛四方车辆研究所有限公司 | Power module and traction converter with same |
| CN113972844A (en) * | 2020-07-24 | 2022-01-25 | 中车株洲电力机车研究所有限公司 | Power electronic traction transformer and high-voltage three-level power module thereof |
| CN114079389A (en) * | 2020-08-12 | 2022-02-22 | 中车株洲电力机车研究所有限公司 | A converter module and its main structure |
| CN114244145A (en) * | 2021-11-30 | 2022-03-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Integrated form power module |
| CN115395760A (en) * | 2022-08-19 | 2022-11-25 | 深圳市禾望电气股份有限公司 | A super high power H-bridge power unit module |
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| CN105958806A (en) * | 2016-05-31 | 2016-09-21 | 中电普瑞科技有限公司 | High-voltage sub-module based on MMC circuit topology |
| CN109245556A (en) * | 2018-08-31 | 2019-01-18 | 西安中车永电电气有限公司 | A kind of diesel locomotive high-power loop circuit heat pipe power module and its mirror-image structure |
| CN109245556B (en) * | 2018-08-31 | 2024-03-26 | 西安中车永电电气有限公司 | High-power loop heat pipe power module for internal combustion locomotive and mirror image structure thereof |
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| CN113972844B (en) * | 2020-07-24 | 2024-03-01 | 中车株洲电力机车研究所有限公司 | Electric and electronic traction transformer and high-voltage three-level power module thereof |
| CN113972844A (en) * | 2020-07-24 | 2022-01-25 | 中车株洲电力机车研究所有限公司 | Power electronic traction transformer and high-voltage three-level power module thereof |
| CN114079389A (en) * | 2020-08-12 | 2022-02-22 | 中车株洲电力机车研究所有限公司 | A converter module and its main structure |
| CN113497563A (en) * | 2021-06-22 | 2021-10-12 | 北京机械设备研究所 | Three-level power module and three-phase inverter system |
| CN113659851A (en) * | 2021-08-18 | 2021-11-16 | 中车青岛四方车辆研究所有限公司 | Power module and traction converter with same |
| CN113659850A (en) * | 2021-08-18 | 2021-11-16 | 中车青岛四方车辆研究所有限公司 | Inversion module and high-frequency auxiliary converter equipment with same |
| CN114244145A (en) * | 2021-11-30 | 2022-03-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Integrated form power module |
| CN115395760A (en) * | 2022-08-19 | 2022-11-25 | 深圳市禾望电气股份有限公司 | A super high power H-bridge power unit module |
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