CN103178721B - A kind of high-capacity five-level converter power cabinet - Google Patents
A kind of high-capacity five-level converter power cabinet Download PDFInfo
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- CN103178721B CN103178721B CN201310117147.4A CN201310117147A CN103178721B CN 103178721 B CN103178721 B CN 103178721B CN 201310117147 A CN201310117147 A CN 201310117147A CN 103178721 B CN103178721 B CN 103178721B
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Abstract
The invention discloses a kind of high-capacity five-level converter power cabinet, belong to semiconductor switch technical field.Five-level converter power cabinet, is followed successively by rectified power cabinet, the first inverter power cabinet, capacitor box and the second inverter power cabinet from left to right.Wherein, three groups of separate rectified power modules are comprised in rectified power cabinet; Three groups of separate Capacitance Power modules are comprised in capacitor box; Three groups of separate inverted power modules are comprised respectively in first inverter power cabinet and the second inverter power cabinet.The circuit connecting form that the present invention is compact, decreases circuit stray inductance, improves the fan-out capability of device.Meanwhile, many cover Five-level converter power cabinet Parallel opertation use, and the fan-out capability of raising device that can be larger, ensure that the service behaviour of device.
Description
Technical field
The invention belongs to semiconductor switch technical field, in particular, provide a kind of integral gate change transistor (Integrated GateCommutated Thyristor, be called for short IGCT) high-capacity five-level converter power cabinet structure, it is applicable to, in 3 ~ 100MVA high-power converter, can be widely used in high-power transmission field.
Background technology
Integrated gate commutated thyristor (IGCT) is that gate drive circuit is integrated in an integrally formed device with door pole stream-exchanging thyristor GCT.Door pole stream-exchanging thyristor GCT is a Novel power semiconductor device based on GTO structure, it not only has identical high blocking ability and low on-state voltage drop with GTO, and have the switch performance identical with IGBT, having the chief of GTO and IGBT concurrently, is a kind of comparatively ideal MW class, Medium voltage switch or circuit breaker device.
As IGBT, have high-speed switch function because IGCT has, as GTO, conduction loss is low, and particularly in high pressure, the various application of big current, reliability is higher.In IGCT device, all elements are contained in compact module, reduce cost.IGCT voltage source inverter, compared with the topological structure of other types frequency converter, structure is simpler, and efficiency is higher.
The application technology of IGCT is very ripe in the world at present, but is but also in the starting stage at home, does not also have the matured product of IGCT current transformer to come out.Complete IGCT active rectifying circuit or inverter circuit comprise IGCT, anti-paralleled diode, clamp device etc., if be electrically connected with bus or wire again after these elements diverge are assembled, not only it takies volume comparatively greatly, and circuit stray inductance is increased.The increase of stray inductance can make the shutoff voltage of IGCT raise, and affects the safe operation of IGCT device.In addition, the (PCC) power dispersion of IGCT is installed, and is also unfavorable for the carrying out of maintenance work.
Summary of the invention
Object of the present invention is the high-power five level frequency conversion device for adopting the power electronic device such as IGCT, and propose a kind of minimizing circuit stray inductance, improve the modular structure of device fan-out capability, being convenient to installation group connects, and is applicable to different engine request.
A kind of high-capacity five-level converter power cabinet provided by the invention, the device be made up of rectified power cabinet (1), the first inverter power cabinet (2), capacitor box (3) and the second inverter power cabinet (4) successively from left to right.Wherein, rectified power cabinet (1) is inner comprises three groups of separate rectified power modules (5), often organize with some power electronic device devices on rectified power module (5), realize direct current by the connection of internal copper bus and export; Capacitor box (3) is inner comprises three groups of separate Capacitance Power modules (6), often organizes on Capacitance Power module (6) and has installed some DC capacitors; First inverter power cabinet (2) and the second inverter power cabinet (4) is inner comprises three groups of separate inverted power modules (7) respectively, often organizes on inverted power module (7) with four IGCT devices.
In rectified power cabinet (1), from top to bottom, be divided into three layers, arrange one group of rectified power module (5) for every layer, often organize rectified power module (5) and be a mutually complete brachium pontis.On rectified power cabinet (1) depth direction, rectified power module (5) is positioned at position forward in the middle part of cabinet, and rectification module water route mother's pipe (8) is positioned at cabinet front portion.In order to conserve space, rectification module water route vertical tube (9) of rectified power cabinet (1) is arranged in the side of rectified power cabinet (1), corresponding with female (8) interface of managing in the rectification module water route of each rectified power module (5), be interconnected by ball valve.Rectification module alternating current bus bar (10) and rectification module DC master row (11) are positioned at the rear portion of rectified power cabinet (1).Meanwhile, rectified power cabinet (1) rear portion arranges three groups of rectifier cabinet DC level busbars (12), and three groups of rectifier cabinet DC level busbars (12) are arranged in parallel in vertical direction at a certain distance.Simultaneously, often organize in rectifier cabinet DC level busbar (12) and comprise three energy conversion levels busbars (13), three energy conversion levels busbars (13) are also arranged in parallel according to a determining deviation in vertical direction, are fixed on the corresponding installing hole of rectified power cabinet (1) cabinet by insulator (14) and DC level busbar support (15).Such design makes whole rectified power cabinet (1) be divided into three functional areas, and water route and circuit separate, and are convenient to installation and maintenance, avoid the interference between each interface, and structure function are clear.
For rectification module DC master row (11), need in design to reduce its stray inductance as much as possible.For this reason, rectification module DC master row (11) is arranged in the rear portion of rectified power module (5), i.e. rearward position in cabinet, is directly connected with energy conversion levels busbar (13).This connected mode makes the connection busbar between circuit the shortest, significantly reduces stray inductance therebetween, and is convenient to change, safeguard.When needing to change rectified power module (5), only the connection of rectification module DC master row (11) with energy conversion levels busbar (13) need be disconnected, whole rectified power module (5) entirety can be shifted out.The effect of rectification module alternating current bus bar (10) introduces three-phase alternating current from rectified power cabinet (1), is arranged in the position adjacent with rectification module DC master row (11) homonymy.And at AC, stray inductance equal distribution parameter need not be considered.Therefore the design of rectification module alternating current bus bar (10) is considered from the angle used, safeguard completely, should offer convenience for using, installing as much as possible.
First inverter power cabinet (2) is identical with the version of the second inverter power cabinet (4).For the first inverter power cabinet (2), in cabinet, from top to bottom, be divided into three layers, arrange one group of inverted power module (7) for every layer.The first inverter power cabinet (2) and the second inverter power cabinet (4) depth direction on, inversion water route mother's pipe (18) of inverted power module (7) and IGCT power drive part (19) are positioned at cabinet front portion; Inverted power module (7) and inversion direct current overlap joint busbar (20) exchange overlap joint busbar (21) and are positioned in the middle part of cabinet with inversion; Cabinet rear portion has been arranged in parallel three groups of inverter cabinet DC level busbars (22) from top to bottom, often organizes in inverter cabinet DC level busbar (22) and comprises three inversion horizontal busbars (23).Each inversion horizontal busbar (23) is arranged in parallel according to certain spacing in vertical direction, is fixed on the corresponding installing hole of inverter power cabinet cabinet by insulator (14) and DC level busbar support (15).Inversion direct current overlap joint busbar (20) often organizing inverted power module (7) is connected with corresponding inversion horizontal busbar (23), achieves circuit complete in cabinet and connects.
In capacitor box (3), be divided into three layers from top to bottom, arrange one group of Capacitance Power module (6) for every layer.In order to save the space of whole capacitor box (3), in capacitor box cabinet, also arrange the vertical main of confession/backwater (16) of cooling water system.Manage (18) interface female with the inversion water route on the inverted power module (7) in left side first inverter power cabinet (2) and right side second inverter power cabinet (4) is corresponding respectively for the vertical main of confession/backwater (16) of cooling water system, is interconnected by ball valve.Capacitor box (3) depth direction is divided into three parts, front portion, middle part, rear portion.Middle part mainly Capacitance Power module (6).Anterior except for installing except the vertical main of confession/backwater (16) of water-cooling system, also use limited space to install precharge transformer (17).At capacitor box (3) rear portion, arrange three groups of capacitor box DC level busbars (24) be arranged in parallel in vertical direction, often organize in capacitor box DC level busbar (24) and contain three capacitance level busbars (25).Capacitance level busbar (25) is arranged in parallel according to certain spacing in vertical direction, is fixed on the corresponding installing hole of capacitor box (3) cabinet by insulator (14) and DC level busbar support (15).The external DC master row of electric capacity (26) often organizing Capacitance Power module (6) is connected with corresponding capacitance level busbar (25), realizes being electrically connected reliably.
A kind of circuit of high-capacity five-level converter power cabinet connects, and is to be realized by the connection overlapping busbar (27) between cabinet each other by the inversion horizontal busbar (23) in the energy conversion levels busbar (13) in rectified power cabinet (1), the first inverter power cabinet (2), the capacitance level busbar (25) in capacitor box (3) and the inversion horizontal busbar (23) in the second inverter power cabinet (4).
Meanwhile, in order to improve the fan-out capability of device further, two covers or many covers five level power cabinets can be coupled together use by overlapping busbar (27) between cabinet.When two cover five level power cabinets connect use, arrangement mode is from left to right followed successively by: rectified power cabinet (1), the first inverter power cabinet (2), capacitor box (3), the second inverter power cabinet (4), outgoing line cabinet (28), the second inverter power cabinet (4), capacitor box (3) and the first inverter power cabinet (2).In two cover five level power cabinets, add one group of outgoing line cabinet (28).
In outgoing line cabinet (28) cabinet, the outlet that anterior layout is drawn from left side second inverter power cabinet (4) and right side second inverter power cabinet (4) exchanges external busbar (29).Discharge power loop (30) suitably can be arranged in the middle part of cupboard.Cupboard rear portion then arranges three groups of outgoing line cabinet DC level busbars (31).Often organize in outgoing line cabinet DC level busbar (31) and contain three outlet horizontal busbars (32).Outlet DC level busbar (31) is identical with the horizontal busbar in other cabinets with the arrangement mode of outlet horizontal busbar (32).
The invention has the advantages that:
The circuit connecting form that power cabinet is compact, decreases circuit stray inductance, improves the fan-out capability of device.Meanwhile, many cover Five-level converter power cabinet Parallel opertation use, and the fan-out capability of raising device that can be larger, ensure that the service behaviour of device.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of five level frequency conversion device;
Fig. 2 is Five-level converter power cabinet Facad structure schematic diagram;
Fig. 3 is Five-level converter power cabinet structural perspective;
Fig. 4 is the front view of two cover Five-level converter power cabinet structure charts;
Fig. 5 is two cover Five-level converter power cabinet structural perspective.
In figure:
Rectified power cabinet 1, first inverter power cabinet 2, capacitor box 3, second inverter power cabinet 4, rectified power module 5, Capacitance Power module 6, inverted power module 7, the female pipe 8 in rectification module water route, rectification module water route vertical tube 9, rectification module alternating current bus bar 10, rectification module DC master row 11, rectifier cabinet DC level busbar 12, energy conversion levels busbar 13, insulator 14, DC level busbar support 15, the vertical main 16 of confession/backwater of water-cooling system, precharge transformer 17, the female pipe 18 in inversion water route, IGCT drive part 19, inversion direct current overlap joint busbar 20, inversion exchanges overlap joint busbar 21, inverter cabinet DC level busbar 22, inversion horizontal busbar 23, capacitor box DC level busbar 24, capacitance level busbar 25, the external DC master row 26 of electric capacity, busbar 27 is overlapped between cabinet, outgoing line cabinet 28, outlet exchanges external busbar 29, power device 30 in discharge loop, outgoing line cabinet DC level busbar 31, outlet horizontal busbar 32.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The invention provides a kind of high-capacity five-level converter power cabinet, it is the five level frequency conversion device for adopting the power electronic device such as IGCT, circuit topology as shown in Figure 1, in figure, D1 ~ D36 is rectifier diode, D37 ~ D48 is clamping diode, C1 ~ C6 is DC capacitor, T1 ~ T24 is that IGCT(contains anti-paralleled diode), five level frequency conversion device inverter side adopts five level NPC/H bridge constructions, the DC side of every phase has two groups of diode three-phase commutation bridges in series, and intermediate link is connected to DC capacitor.
Fig. 2 is the structural representation of a kind of five level power cabinets provided of the present invention, and five described level power cabinets are made up of rectified power cabinet 1, first inverter power cabinet 2, capacitor box 3 and the second inverter power cabinet 4.Every 1 li, platform rectified power cabinet comprises three groups of separate rectified power modules 5, often organizes with 12 diode components in rectified power module 5, and each diode component realizes direct current by the connection of internal copper bus and exports.Capacitor box 3 li comprises three groups of separate Capacitance Power module 6(as Fig. 3), often organize DC capacitor Capacitance Power module 6 having installed more than four; First inverter power cabinet 2 and 4 li, the second inverter power cabinet comprise three groups of separate inverted power modules 7 respectively, often organize on inverted power module 7 with four IGCT devices.The overall dimensions of rectified power cabinet 1 are that 2500 × 1000 × 1500(is high × wide × dark, unit: mm).In the depth direction, as Fig. 2, rectified power module 5 is positioned at position forward in the middle part of rectified power cabinet 1, and it is anterior that the female pipe 8 in rectification module water route is positioned at rectified power cabinet 1, is connected with the rectification module water route vertical tube 9 on the left of cabinet; As Fig. 3, three groups of rectifier cabinet DC level busbars, 12, three groups of rectifier cabinet DC level busbars 12 are arranged in parallel in vertical direction at a certain distance, are positioned at the rear portion of rectified power cabinet 1.Simultaneously, often organize in rectifier cabinet DC level busbar 12 and comprise three energy conversion levels busbars 13, three energy conversion levels busbars 13 are also arranged in parallel according to a determining deviation in vertical direction, are fixed on the corresponding installing hole of rectified power cabinet 1 cabinet by insulator 14 and DC level busbar support 15.First inverter power cabinet 2 is identical with the version of the second inverter power cabinet 4, and overall dimensions are that 2500 × 1200 × 1500(is high × wide × dark, unit: mm).On the depth direction of the first inverter power cabinet 2 and the second inverter power cabinet 4, the female pipe 18 in inversion water route of inverted power module 7 and IGCT drive part 19 are positioned at cabinet front portion, as Fig. 2; Inverted power module 7 and inversion direct current overlap joint busbar 20 exchange overlap joint busbar 21 and are positioned in the middle part of cabinet with inversion; Cabinet rear portion, be arranged in parallel three groups of inverter cabinet DC level busbars 22 from top to bottom, often organizes in inverter cabinet DC level busbar 22 the inversion horizontal busbar 23 comprising three.Each inversion horizontal busbar 23 is arranged in parallel according to certain spacing in vertical direction, is fixed on the corresponding installing hole of cabinet of the first inverter power cabinet 2 and the second inverter power cabinet 4 by insulator 14 and DC level busbar support 15.The overall dimensions of capacitor box 3 are that 2500 × 1000 × 1500(is high × wide × dark, unit: mm).On capacitor box 3 depth direction, middle part is Capacitance Power module 5 mainly; Anterior except the vertical main 16 of the confession/backwater for installing water-cooling system, also use limited space to install precharge transformer 17.At capacitor box 3 rear portion, arrange three groups of capacitor box DC level busbars 24 be arranged in parallel in vertical direction, often organize in capacitor box DC level busbar 24 the capacitance level busbar 25 containing three.Capacitance level busbar 25 is arranged in parallel according to certain spacing in vertical direction, is fixed on the corresponding installing hole of capacitor box 3 cabinet by insulator 14 and DC level busbar support 15.The circuit of five level power cabinets connects, be then to be realized by the connection overlapping busbar 27 between cabinet each other by the inversion horizontal busbar 23 in energy conversion levels busbar 13, the first inverter power cabinet 2 in rectified power cabinet 1, the capacitance level busbar 25 in capacitor box 3 and the inversion horizontal busbar 23 in the second inverter power cabinet 4.Meanwhile, in order to improve the power output of device further, two cover five level power cabinets can be realized Parallel opertation by output transformer.As shown in Figure 4 and Figure 5, two cover five level power cabinets from left to right comprise successively: rectified power cabinet 1, first inverter power cabinet 2, capacitor box 3, second inverter power cabinet 4, outgoing line cabinet 28, second inverter power cabinet 4, capacitor box 3 and the first inverter power cabinet 2.In two cover five level power cabinets, add one group of outgoing line cabinet 28, two and overlap the shared rectified power cabinet 1 of five level power cabinets.The employing of described rectified power cabinet 1, chooses according to power capacity.In outgoing line cabinet 28 cabinet, cabinet front portion is fixed with the external busbar 29 of interchange outlet of drawing from arranged on left and right sides inverter power cabinet and is convenient to output connection.Lay three groups of discharge power loops 30 in the middle part of cabinet, connect, for the electric discharge of Capacitance Power module respectively at three groups of outgoing line cabinet DC level busbars 31.Cupboard rear portion then arranges three groups of outgoing line cabinet DC level busbars 31.Often organize in outgoing line cabinet DC level busbar 31 and contain three outlet horizontal busbars 32.Outgoing line cabinet three groups of DC level busbars 31 are identical with the horizontal busbar in other cabinets.
Claims (5)
1. a high-capacity five-level converter power cabinet, it is characterized in that: be followed successively by rectified power cabinet (1), the first inverter power cabinet (2), capacitor box (3) and the second inverter power cabinet (4) from left to right, wherein, rectified power cabinet (1) is inner comprises three groups of separate rectified power modules (5), often organize with some power electronic device on rectified power module (5), realize direct current by the connection of internal copper bus and export; Capacitor box (3) is inner comprises three groups of separate Capacitance Power modules (6), often organizes on Capacitance Power module (6) and has installed some DC capacitors; First inverter power cabinet (2) and the second inverter power cabinet (4) is inner comprises three groups of separate inverted power modules (7) respectively, often organizes on inverted power module (7) with four IGCT devices; In rectified power cabinet (1), be divided into three layers from top to bottom, arrange one group of rectified power module (5) for every layer; In the depth direction, rectified power module (5) is positioned at forward position, rectified power cabinet (1) middle part, and rectification module water route mother's pipe (8) is positioned at front portion; Side arrangement rectification water route vertical tube (9), corresponding with female (8) interface of managing in the rectification module water route of each rectified power module (5), be interconnected by ball valve; The rear portion of rectified power cabinet (1) is rectification module alternating current bus bar (10) and rectification module DC master row (11); Meanwhile, rectified power cabinet (1) rear portion arranges three groups of rectifier cabinet DC level busbars (12), and three groups of rectifier cabinet DC level busbars (12) are arranged in parallel in vertical direction; Often organize in rectifier cabinet DC level busbar (12) and comprise three energy conversion levels busbars (13), three energy conversion levels busbars (13) are also arranged in parallel in vertical direction, are fixed on the corresponding installing hole of rectified power cabinet (1) cabinet by insulator (14) and DC level busbar support (15).
2. a kind of high-capacity five-level converter power cabinet according to claim 1, is characterized in that: rectification module DC master row (11) is directly connected with energy conversion levels busbar (13); Rectification module alternating current bus bar (10) is arranged in the position adjacent with rectification module DC master row (11) homonymy.
3. a kind of high-capacity five-level converter power cabinet according to claim 1, it is characterized in that: the first inverter power cabinet (2) is identical with the version of the second inverter power cabinet (4), for the first inverter power cabinet (2), in cabinet, be divided into three layers from top to bottom, arrange one group of inverted power module (7) for every layer; On depth direction, inverted power module (7) is placed in the middle part of cabinet, and inversion direct current overlap joint busbar (20) exchanges overlap joint busbar (21) and is positioned at cabinet rear portion with inversion; Inversion water route mother's pipe (18) of inverted power module (7) and IGCT drive part (19) are positioned at cabinet front portion; Cabinet rear portion has been arranged in parallel three groups of inverter cabinet DC level busbars (22) from top to bottom, often organizes in inverter cabinet DC level busbar (22) and comprises three inversion horizontal busbars (23); Each inversion horizontal busbar (23) is arranged in parallel in vertical direction, is fixed on the corresponding installing hole of inverter power cabinet cabinet by insulator (14) and DC level busbar support (15); Inversion direct current overlap joint busbar (20) often organizing inverted power module (7) is connected with corresponding inversion horizontal busbar (23).
4. a kind of high-capacity five-level converter power cabinet according to claim 1, is characterized in that: in capacitor box (3), be divided into three layers from top to bottom, arranges one group of Capacitance Power module (6) for every layer; The vertical main of confession/backwater (16) of cooling water system is also arranged in capacitor box (3); Manage (18) interface female with the inversion water route on the inverted power module (7) in left side first inverter power cabinet (2) and right side second inverter power cabinet (4) is corresponding respectively for the vertical main of confession/backwater (16) of cooling water system, is interconnected by ball valve; On capacitor box (3) depth direction; Middle part is Capacitance Power module (6); The anterior vertical main of confession/backwater (16) and the precharge transformer (17) installing water-cooling system; Rear portion arranges three groups of capacitor box DC level busbars (24) be arranged in parallel in vertical direction, often organizes in capacitor box DC level busbar (24) the capacitance level busbar (25) containing more than three; Capacitance level busbar (25) is arranged in parallel in vertical direction, is fixed on the corresponding installing hole of capacitor box (3) cabinet by insulator (14) and DC level busbar support (15); The external DC master row of electric capacity (26) often organizing Capacitance Power module (6) is connected with corresponding capacitance level busbar (25), realizes being electrically connected reliably.
5. a high-capacity five-level converter power cabinet group, is characterized in that: will overlap Five-level converter power cabinet more and couple together use by overlapping busbar (27) between cabinet; Two cover Five-level converter power cabinets couple together use by overlapping busbar (27) between cabinet; Two cover Five-level converter power cabinets from left to right comprise successively: rectified power cabinet (1), the first inverter power cabinet (2), capacitor box (3), the second inverter power cabinet (4), outgoing line cabinet (28), the second inverter power cabinet (4), capacitor box (3) and the first inverter power cabinet (2), and two cover Five-level converter power cabinets share a rectified power cabinet (1); Described outgoing line cabinet (28) is divided into front portion, middle part and rear portion, and the outlet that anterior layout is drawn from left side second inverter power cabinet (4) and right side second inverter power cabinet (4) exchanges external busbar (29); Discharge power loop (30) is arranged at middle part; Three groups of outgoing line cabinet DC level busbars (31) are arranged at rear portion; Often organize in outgoing line cabinet DC level busbar (31) and contain three outlet horizontal busbars (32).
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| CN201310117147.4A CN103178721B (en) | 2013-04-07 | 2013-04-07 | A kind of high-capacity five-level converter power cabinet |
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| CN201310117147.4A CN103178721B (en) | 2013-04-07 | 2013-04-07 | A kind of high-capacity five-level converter power cabinet |
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| CN103178721A CN103178721A (en) | 2013-06-26 |
| CN103178721B true CN103178721B (en) | 2015-09-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9667166B2 (en) | 2015-07-10 | 2017-05-30 | Delta Electronics (Shanghai) Co., Ltd. | Five-level converting device |
| US9800175B2 (en) | 2015-07-10 | 2017-10-24 | Delta Electronics (Shanghai) Co., Ltd. | Five-level converting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103532348A (en) * | 2013-10-22 | 2014-01-22 | 南车株洲电力机车研究所有限公司 | Functional unit cabinet of high-power semiconductor convertor |
| CN106602451A (en) * | 2016-06-27 | 2017-04-26 | 河南平芝高压开关有限公司 | Power cabinet |
| CN109742923B (en) * | 2018-12-10 | 2021-03-19 | 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） | Large-capacity power cabinet |
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| DE10153748A1 (en) * | 2001-10-31 | 2003-05-22 | Siemens Ag | Converter unit in modular design |
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| CN2872729Y (en) * | 2006-02-23 | 2007-02-21 | 国电南京自动化股份有限公司 | Three-level frequency converter high-medium voltage integrating structure based on IGCT |
| CN101345423A (en) * | 2008-05-07 | 2009-01-14 | 中国科学院电工研究所 | 5-power level H-bridge cascade connection back-to-back current transformer used for wind power generation system |
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| US9800175B2 (en) | 2015-07-10 | 2017-10-24 | Delta Electronics (Shanghai) Co., Ltd. | Five-level converting device |
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| CN103178721A (en) | 2013-06-26 |
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