CN103178724A - Capacitor module for large-capacity three-level converter - Google Patents
Capacitor module for large-capacity three-level converter Download PDFInfo
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- CN103178724A CN103178724A CN2013101181828A CN201310118182A CN103178724A CN 103178724 A CN103178724 A CN 103178724A CN 2013101181828 A CN2013101181828 A CN 2013101181828A CN 201310118182 A CN201310118182 A CN 201310118182A CN 103178724 A CN103178724 A CN 103178724A
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Abstract
The invention provides a capacitor module for a large-capacity three-level converter, and belongs to the technical field of high-power converters. The capacitor module comprises a plurality of square-shaped capacitors, a laminated busbar, a P-phase overlapped busbar, an M-phase overlapped busbar, an N-phase overlapped busbar, a metal frame and insulators and the like, wherein all the square-shaped capacitors are arranged in parallel and are fixed in the metal frame; and the plurality of square-shaped capacitors are connected in parallel by adopting the laminated busbar and are respectively provided with two independent thin-film capacitors. The capacitor module provided by the invention has the advantages that the capacity of the capacitors is increased, and the stray inductance and resistance of a line are reduced, so that the damage of voltage spike to a power device is reduced and the line loss is reduced.
Description
Technical field
The invention belongs to the technical field of high-power converter, a kind of capacitance module for large capacity three-level current transformer particularly is provided, it is applicable in 3～100 megavolt-amperes (MVA) high-power converter, can be widely used in the high-power transmission field.
Background technology
The current transformer DC link need to be carried out energy storage and suppress ripple voltage with electric capacity, to satisfy the normal operation requirement of current transformer.In the middle low power current transformer, dc voltage is low, and output current is little, and low withstand voltage low capacity electric capacity volume is little, and application technology is ripe, and is less demanding to the DC link stray parameter.Yet large capacity current transformer is owing to integrating high voltage and large electric current, and is high to capacity, insulation, the stray parameter requirement of DC link.High voltage large capcity electric capacity often volume is also larger, causes the DC link stray parameter excessive, and simultaneously high class of insulation large bulk capacitance is made difficulty, becomes the obstacle of its large-scale application.
Summary of the invention
The present invention is directed to the problems such as DC link capacitance, the class of insulation, stray parameter in present high voltage large capcity current transformer, a kind of capacitance module for large capacity three-level current transformer is provided, the dc-link capacitance of tri-level single-phase-bridge arm is integrated in separate modular, for in the application of large capacity current transformer, provide a solution that load-bearing capacity is higher, structure is compacter, stray parameter is less.
A kind of capacitance module for large capacity three-level current transformer provided by the invention comprises: supporting insulator, laminated bus bar, square electric container, metal framework, P overlap mutually busbar, M and overlap mutually busbar and overlap mutually busbar with N.Metal framework is the bracing frame of capacitance module, and four supporting insulators are fixed on metal framework, as mechanical interface, is used for the fixing electric insulation that reaches of installation of capacitance module.The parallel placement of plural square electric container is fixed in metal framework.Laminated bus bar is used for the square electric container is coupled together in parallel.
The square capacitance utensil has two independently thin-film capacitors, each thin-film capacitor is with two binding posts, the first terminal and the second terminal that two binding posts of first thin-film capacitor are the square electric container, two binding posts of second thin-film capacitor are the 3rd terminal and the 4th terminal of square electric container, the first terminal is as the P phase, the second terminal and the 3rd terminal short circuit as M mutually, the 4th terminal is as the N phase.
Laminated bus bar by P phase busbar external insulation layer, P phase busbar, PM phase insulation layer, M phase busbar, MN phase insulation layer, N phase busbar and N mutually busbar external insulation layer sequential cascade form.Be respectively equipped with electric capacity binding post and the conductive hole that is connected corresponding overlap joint busbar on P phase busbar, M phase busbar and N phase busbar.P phase busbar is with the first terminal short circuit of each square capacitor, and M phase busbar is with all second terminals and the 3rd terminal short circuit of each square capacitor, and N phase busbar is with the 4th terminal short circuit of each square capacitor.
P overlaps mutually busbar, M and overlaps mutually busbar and overlap mutually busbar with N and be arranged on laminated bus bar, and P overlaps mutually busbar and is connected on P phase busbar, and M overlaps mutually busbar and is connected on M phase busbar, and N overlaps mutually busbar and is connected on N phase busbar.
The advantage of capacitance module of the present invention is: adopted the design of laminated bus bar thin-film capacitor in parallel, increased capacitance, reduced stray inductance and the impedance of circuit, thereby reduced due to voltage spikes to the infringement of power device, reduced line loss; Also help simultaneously the I﹠M of capacitance module.The compact conformation of capacitance module, bulk is little, and assembling is simple, convenient, is applicable to the high-power AC-DC-AC converter of 3～100MVA.
Description of drawings
Fig. 1 is the structural representation of capacitance module of the present invention;
Fig. 2 is the structural representation of laminated bus bar;
Fig. 3 is the structural representation of square electric container.
In figure:
The 1-supporting insulator; The 2-laminated bus bar; 3-square electric container; The 4-metal framework; 5-P overlaps busbar mutually; 6-M overlaps busbar mutually; 7-N overlaps busbar mutually; 8-P phase busbar external insulation layer; 9-P phase busbar; 10-PM phase insulation layer; 11-M phase busbar;
12-MN phase insulation layer; 13-N phase busbar; 14-N phase busbar external insulation layer; 15-the first film electric capacity; 16-the second thin-film capacitor; The 17-the first terminal; 18-the second terminal; 19-the 3rd terminal; 20-the 4th terminal.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
A kind of capacitance module for large capacity three-level current transformer provided by the invention, the technical field that belongs to high-power converter, the main element that uses is thin-film capacitor, by the position of each thin-film capacitor of reasonable Arrangement and the mode of laminated bus bar connection electric capacity, has consisted of whole capacitance module.
Fig. 1 is a kind of execution mode of capacitance module of the present invention.This capacitance module comprises: supporting insulator 1, laminated bus bar 2, square electric container 3, metal framework 4, P overlap mutually busbar 5, M and overlap mutually busbar 6 and overlap mutually busbar 7 with N.In Fig. 1, metal framework 4 is with rectangular frame, and adopting metal framework 4 is the bracing frame of capacitance module, five parallel placements of square electric container 3, be fixed in metal framework 4, by the laminated bus bar 2 square electric container 3 that is connected in parallel, realize the electrical connection of a plurality of square electric containers 3.P overlaps mutually busbar 5, M and overlaps mutually busbar 6 and overlap mutually busbar 7 with N and be connected on laminated bus bar 2, is used for capacitance module and is connected connection with external circuit.Four are fixed on supporting insulator 1 on metal framework 4 as mechanical interface, are used for the fixing and electric insulation of the installation of capacitance module.
Laminated bus bar 2 comprises seven layers altogether, and outer surface by insulation-encapsulated as shown in Figure 2, is respectively from top to bottom: P phase busbar external insulation layer 8, P phase busbar 9, PM phase insulation layer 10, M phase busbar 11, MN phase insulation layer 12, N phase busbar 13, N phase busbar external insulation layer 14.Busbar 13 is mutually stacked mutually for P phase busbar 9, M phase busbar 11 and N, is respectively equipped with electric capacity binding post and the conductive hole that is connected corresponding overlap joint busbar.
Each square electric container 3 realizes by two thin-film capacitors, as shown in Figure 3, has the first film electric capacity 15 and 16, two thin-film capacitors 15 of the second thin-film capacitor, 16 separate in square electric container 3.Each thin-film capacitor consists of four terminals of square electric container 3 with two binding posts.In Fig. 3, two binding posts that two binding posts of the first film electric capacity 15 consist of respectively the first terminal 17 of square electric container 3 and the second terminal 18, the second thin-film capacitors 16 consist of respectively the 3rd terminal 19 and the 4th terminal 20 of square electric container 3.The first terminal 17 is as the P phase, the second terminal 18 and the 3rd terminal 19 short circuits as M mutually, the 4th terminal 20 is as the N phase.In the present invention, P is positive level mutually, and M is 0 level mutually, and N is negative level mutually.
Each layer busbar is respectively equipped with electric capacity binding post and the conductive hole that is connected corresponding overlap joint busbar: P phase busbar 9 is with the first terminal 17 short circuits of each square capacitor 3, M phase busbar 11 is with all second terminals 18 and the 3rd terminal 19 short circuits of each square capacitor 3, and N phase busbar 13 is with the 4th terminal 20 short circuits of each square capacitor 3; P overlaps mutually busbar 5 and is connected on P phase busbar 9, and M overlaps mutually busbar 6 and is connected on M phase busbar 11, and N overlaps mutually busbar 7 and is connected on N phase busbar 13, realizes capacitance module and outside being connected by the overlap joint busbar.
It should be noted that adopting five square electric containers 3 in above-described embodiment is example and unrestricted the present invention, can increase or reduce the quantity of square electric container 3 according to the requirement of different capacity grade.
Claims (3)
1. capacitance module that is used for large capacity three-level current transformer, it is characterized in that: comprising: supporting insulator (1), laminated bus bar (2), square electric container (3), metal framework (4), P overlap busbar (5) mutually, M overlaps mutually busbar (6) and overlaps mutually busbar (7) with N;
Metal framework (4) is the bracing frame of capacitance module, and supporting insulator (1) is fixed on metal framework (4), is used for the fixing electric insulation that reaches of installation of capacitance module; The parallel placement of plural square electric container (3) is fixed in metal framework (4); Laminated bus bar (2) is used for square electric container (3) is coupled together in parallel; P overlaps mutually busbar (5), M and overlaps mutually busbar (6) and overlap mutually busbar (7) with N and be arranged on laminated bus bar (2).
2. a kind of capacitance module for large capacity three-level current transformer according to claim 1, it is characterized in that: described square electric container (3) has two independently thin-film capacitors, each thin-film capacitor is with two binding posts, the first terminal (17) that two binding posts of first thin-film capacitor are square electric container (3) and the second terminal (18), two binding posts of second thin-film capacitor are the 3rd terminal (19) and the 4th terminal (20) of square electric container (3), the first terminal (17) is as the P phase, the second terminal (18) and the 3rd terminal (19) short circuit are as M mutually, the 4th terminal (20) is as the N phase.
3. according to claim 1 and 2 a kind of for large capacity three-level current transformer capacitance module, it is characterized in that: described laminated bus bar (2) by P phase busbar external insulation layer (8), P phase busbar (9), PM phase insulation layer (10), M phase busbar (11), MN phase insulation layer (12), N phase busbar (13) and N mutually busbar external insulation layer (14) sequential cascade form; P phase busbar (9), M phase busbar (11) and N phase busbar are connected 13) on be respectively equipped with the electric capacity binding post and be connected the conductive hole of corresponding overlap joint busbar; P phase busbar (9) is with the first terminal (17) short circuit of each square capacitor (3), M phase busbar (11) is with all second terminals (18) and the 3rd terminal (19) short circuit of each square capacitor (3), and N phase busbar (13) is with the 4th terminal (20) short circuit of each square capacitor (3); , P overlaps mutually busbar (5) and is connected on P phase busbar (9), and M overlaps mutually busbar (6) and is connected on M phase busbar (11), and N overlaps mutually busbar (7) and is connected on N phase busbar (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013101181828A CN103178724A (en) | 2013-04-07 | 2013-04-07 | Capacitor module for large-capacity three-level converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101181828A CN103178724A (en) | 2013-04-07 | 2013-04-07 | Capacitor module for large-capacity three-level converter |
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| CN103178724A true CN103178724A (en) | 2013-06-26 |
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| CN2013101181828A Pending CN103178724A (en) | 2013-04-07 | 2013-04-07 | Capacitor module for large-capacity three-level converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683851A (en) * | 2013-12-02 | 2014-03-26 | 河南理工大学 | Power converter direct-current busbar |
| CN103700429A (en) * | 2014-01-03 | 2014-04-02 | 合康变频科技（武汉）有限公司 | Laminated busbar applied to high-frequency large current-carrying circuit |
| CN104201866A (en) * | 2014-09-16 | 2014-12-10 | 北京金自天正智能控制股份有限公司 | Insulated gate bipolar transistor three-level power cabinet |
| CN109738725A (en) * | 2018-12-31 | 2019-05-10 | 河南省高压电器研究所有限公司 | Prolong arc loop apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060007720A1 (en) * | 2002-09-27 | 2006-01-12 | Pfeifer David W | Compact liquid converter assembly |
| CN101741227A (en) * | 2010-02-08 | 2010-06-16 | 浙江大学 | Water-cooled three-phase diode-clamped three-level inverted power module |
| CN202307535U (en) * | 2011-10-12 | 2012-07-04 | 上海新时达电气股份有限公司 | Laminated bus bar structure for filter capacitor |
| CN102624265A (en) * | 2011-01-30 | 2012-08-01 | 江苏清能电源有限公司 | Capacitance integrated type high voltage low inductance lamination bus bars and connecting method thereof |
| CN102882385A (en) * | 2012-10-22 | 2013-01-16 | 台达电子工业股份有限公司 | Laminated busbar structure for three-level power converter and power converter |
-
2013
- 2013-04-07 CN CN2013101181828A patent/CN103178724A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060007720A1 (en) * | 2002-09-27 | 2006-01-12 | Pfeifer David W | Compact liquid converter assembly |
| CN101741227A (en) * | 2010-02-08 | 2010-06-16 | 浙江大学 | Water-cooled three-phase diode-clamped three-level inverted power module |
| CN102624265A (en) * | 2011-01-30 | 2012-08-01 | 江苏清能电源有限公司 | Capacitance integrated type high voltage low inductance lamination bus bars and connecting method thereof |
| CN202307535U (en) * | 2011-10-12 | 2012-07-04 | 上海新时达电气股份有限公司 | Laminated bus bar structure for filter capacitor |
| CN102882385A (en) * | 2012-10-22 | 2013-01-16 | 台达电子工业股份有限公司 | Laminated busbar structure for three-level power converter and power converter |
Non-Patent Citations (1)
| Title |
|---|
| 刘玉柱，王亮，何小刚，孙石林: "《叠层母排低感设计分析》", 《大功率变流技术 》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683851A (en) * | 2013-12-02 | 2014-03-26 | 河南理工大学 | Power converter direct-current busbar |
| CN103700429A (en) * | 2014-01-03 | 2014-04-02 | 合康变频科技（武汉）有限公司 | Laminated busbar applied to high-frequency large current-carrying circuit |
| CN104201866A (en) * | 2014-09-16 | 2014-12-10 | 北京金自天正智能控制股份有限公司 | Insulated gate bipolar transistor three-level power cabinet |
| CN104201866B (en) * | 2014-09-16 | 2017-02-08 | 北京金自天正智能控制股份有限公司 | Insulated gate bipolar transistor three-level power cabinet |
| CN109738725A (en) * | 2018-12-31 | 2019-05-10 | 河南省高压电器研究所有限公司 | Prolong arc loop apparatus |
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Application publication date: 20130626 |