CN202949366U - Modular structure of three-level converter for wind power generation - Google Patents
Modular structure of three-level converter for wind power generation Download PDFInfo
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- CN202949366U CN202949366U CN 201220634263 CN201220634263U CN202949366U CN 202949366 U CN202949366 U CN 202949366U CN 201220634263 CN201220634263 CN 201220634263 CN 201220634263 U CN201220634263 U CN 201220634263U CN 202949366 U CN202949366 U CN 202949366U
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- water
- busbar
- cooling
- direct current
- base plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The utility model discloses a modular structure of a three-level converter for wind power generation. The modular structure comprises an electrical system and a cooling system, the electrical system is provided with four direct current capacitors, four insulated gate bipolar transistors (IGBTs), two clamping diodes, two absorption capacitors, a balance resistor and busbars, and the cooling system is provided with a water-cooling substrate and an air water-heat exchanger; a cooling water channel is arranged in the water-cooling substrate, and a water inlet and a water outlet which are connected with the air water-heat exchanger are arranged on the lower end surface of the water-cooling substrate; the busbars comprise a direct current capacitor busbar and a conversion current loop busbar, the direct current capacitor busbar is arranged above the water-cooling substrate, and the conversion current loop busbar is vertically connected with the direct current capacitor busbar and parallelly arranged in front of the water-cooling substrate; the four direct current capacitors are arranged below the direct current capacitor busbar, and wiring terminals are connected with the direct current capacitor busbar; and the four IGBTs and the two clamping diodes are fixed on the water-cooling substrate, and the wiring terminals, the two absorption capacitors, a wiring terminal of the balance resistor are connected with the conversion current loop busbar. By means of the modular structure, three-level rectifying and inverting systems with different power levels can be simply and rapidly established.
Description
Technical field
The utility model relates to a kind of power device, is specifically related to a kind of modular construction of the three-level current transformer for wind power generation.
Background technology
Along with the development and progress of wind generating technology, for the consideration of economy, current wind-powered electricity generation single-machine capacity is more and more higher, and the current transformer power that therefore drives wind-driven generator is also more and more higher.In order to improve the efficient of whole system, reduce the thermal losses of system simultaneously, powerful wind generator system is tending towards adopting the electric pressure of mesohigh.Development level in view of the current power electronic device, if continue to adopt the topological structure of two level, need the series connection of many power electronic device in the mesohigh occasion, and that the voltage-sharing of Static and dynamic of series connection power electronic device solves is more difficult, thereby reduces the reliability of whole system.Three level topological structures have successfully solved the problem of all pressing owing to having adopted clamping diode or clamping capacitance, make the power electronic device of low-voltage-grade become possibility in the application of mesohigh converter system.Because the level of clamping capacitance in three capacitor-clamped level topologys is controlled more complicated, the three level structures that adopt diode clamp in current application more.
Along with the development of power electronic technology, the power density of module is more and more higher, and this just requires to provide radiating mode preferably to device, to satisfy the condition of its trouble free service.In powerful converter system, because the caloric value of power electronic device is larger, usually adopt water-filled radiator.Water-filled radiator is that switching frequency, current curve, maximum junction temperature and the pyroconductivity according to device carried out rational deployment, takes away the heat of device by the mixture of water and ethylene glycol.
Summary of the invention
The purpose of this utility model is the defective that overcomes prior art, a kind of modular construction of the three-level current transformer for wind power generation is provided, it can set up three level rectifyings, the inversion system of different capacity grade simply, quickly, is convenient to the maintenance and expansion of system.
The technical scheme that realizes above-mentioned purpose is: a kind of modular construction of the three-level current transformer for wind power generation, comprise electrical system and cooling system, described electrical system comprises four direct current capacitors, four IGBT, two clamping diodes, two Absorption Capacitances, balance resistance and busbar, described cooling system comprises a water-cooling base plate and air to water heat exchanger, wherein
The inside of described water-cooling base plate is provided with cooling-water duct, and the lower surface of this water-cooling base plate is provided with and water inlet and delivery port that with described air to water heat exchanger be connected that be communicated with cooling-water duct;
Described busbar comprises that level is arranged on the dc capacitor busbar of described water-cooling base plate top and is vertically connected on the front end of dc capacitor busbar and is arranged on abreast the commutation circuit busbar in described water-cooling base plate the place ahead to ground;
Described four direct current capacitors are located at the below of described dc capacitor busbar abreast, and the binding post of these four direct current capacitors is connected with the lip-deep connecting hole of described dc capacitor busbar correspondingly;
Described four IGBT and two clamping diodes are close to the surface of described water-cooling base plate and are fixed on described water-cooling base plate;
The binding post of the binding post of the binding post of the binding post of described four IGBT, two clamping diodes, two Absorption Capacitances and a balance resistance is connected with the lip-deep connecting hole of described commutation circuit busbar correspondingly.
The technical scheme of the modular construction of the three-level current transformer for wind power generation of the present utility model, the needed electric component of wind electric converter and cooling system have been integrated, make it modularization, can set up simply, quickly three level rectifyings, the inversion system of different capacity grade, be convenient to the maintenance and expansion of system.The utility model is conducive to the Redundancy Design of system, helps to improve the reliability of system; Be convenient to the installation and maintenance of system, enhance productivity; Be beneficial to the expansion of system, avoided simultaneously the repetitive operation in the R﹠D process.
Description of drawings
Fig. 1 is the schematic diagram that is used for the single-phase three-level current transformer of wind power generation;
Fig. 2 is the perspective view of the modular construction of the three-level current transformer for wind power generation of the present utility model;
Fig. 3 is the structural representation of the water-cooling base plate in the utility model.
Embodiment
In order to make those skilled in the art can understand better the technical solution of the utility model, below in conjunction with accompanying drawing, its embodiment is described in detail:
See also Fig. 1, the single-phase three-level current transformer that is used for wind power generation comprises that four direct current capacitor C1～C4, four have respectively the IGBTS1～S4 of inverse parallel fly-wheel diode, two clamping diode D1, D2, two Absorption Capacitance CS1, CS2 and a balance resistance R.By two direct current capacitor C1, C2 and be unified into one group, by another two direct current capacitor C3 and C4 and be unified into one group, then two groups of series connection consist of the three level DC side of positive level, zero level and negative level.Four IGBTS1, S2, S3, S4 connect successively, and the collector electrode of IGBTS1 is connected with direct current positive bus DC+, and the emission collection of IGBTS4 is connected with direct current negative busbar DC-, and the connecting line of IGBTS2 and I GBTS3 is for exchanging I/O end AC.Absorption Capacitance CS1 is installed between the direct current positive bus DC+ between the IGBT of four series connection S1～S4 and two groups of direct current capacitors of connecting and direct current center line DC0, Absorption Capacitance CS2 is installed between direct current center line DC0 and direct current negative busbar DC-.In parallel with balance resistance R after two clamping diode D1, D2 series connection, and jointly be connected in parallel between the collector electrode of the emission collection of IGBTS1 and IGBTS4, the anode of clamping diode D1 is connected with direct current center line DC0 with the negative electrode of clamping diode D2, like this with regard to the single-phase tri-level circuit of complete.
See also Fig. 2, the modular construction of the three-level current transformer for wind power generation of the present utility model comprises electrical system and cooling system, wherein,
Electrical system comprises four direct current capacitor C1～C4, four IGBT S1～S4, two clamping diode D1, D2, two Absorption Capacitance CS1, CS2, balance resistance R and busbar;
Cooling system comprises a water-cooling base plate 1 and air to water heat exchanger, the inside of this water-cooling base plate 1 is provided with cooling-water duct 10, the lower surface of this water-cooling base plate 1 is provided with water inlet 11 and the delivery port 12 that is communicated with cooling-water duct, and water inlet 11 is connected with delivery port and is located at outside air to water heat exchanger and is connected;
Busbar comprise level be arranged on to ground water-cooling base plate 1 the top dc capacitor busbar 2 and be vertically connected on the front end of dc capacitor busbar 2 and be set in parallel in the commutation circuit busbar 3 in the place ahead of water-cooling base plate 1;
Four direct current capacitor C1～C4 are located at the below of dc capacitor busbar 2 abreast, and the terminals of these four direct current capacitor C1～C4 are connected with the lip-deep connecting hole of dc capacitor busbar 2 correspondingly;
Four IGBT S1～S4 and two clamping diode D1, D2 are close to the surface of water-cooling base plate 1 and are fixed by screws in (see figure 3) on water-cooling base plate 1, and four IGBT S1～S4 and two clamping diode D1, D2 are well dispelled the heat;
The terminals of the binding post of the binding post of the binding post of four IGBT S1～S4, two clamping diode D1, D2, two Absorption Capacitance CS1, CS2 and a balance resistance R are connected with the lip-deep connecting hole of commutation circuit busbar 3 correspondingly.
The setting of commutation circuit busbar 3 is mainly the stray inductance that reduces commutation circuit, and leaves interchange I/O end, can connect the input/output end of AC network or alternating current machine.
The modular construction of the three-level current transformer for wind power generation of the present utility model, the needed electric component of current transformer and cooling system have been integrated, make it modularization, can set up simply, quickly three level rectifyings, the inversion system of different capacity grade, be convenient to the maintenance and expansion of system.
The modular construction of the three-level current transformer for wind power generation of the present utility model is conducive to the Redundancy Design of system, helps to improve the reliability of system; Be convenient to the installation and maintenance of system, enhance productivity; Be beneficial to the expansion of system, avoided simultaneously the repetitive operation in the R﹠D process.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (1)
1. modular construction that is used for the three-level current transformer of wind power generation, comprise electrical system and cooling system, described electrical system comprises four direct current capacitors, four IGBT, two clamping diodes, two Absorption Capacitances, balance resistance and busbar, described cooling system comprises a water-cooling base plate and air to water heat exchanger, it is characterized in that
The inside of described water-cooling base plate is provided with cooling-water duct, and the lower surface of this water-cooling base plate is provided with and water inlet and delivery port that with described air to water heat exchanger be connected that be communicated with cooling-water duct;
Described busbar comprises that level is arranged on the dc capacitor busbar of described water-cooling base plate top and is vertically connected on the front end of dc capacitor busbar and is arranged on abreast the commutation circuit busbar in described water-cooling base plate the place ahead to ground;
Described four direct current capacitors are located at the below of described dc capacitor busbar abreast, and the binding post of these four direct current capacitors is connected with the lip-deep connecting hole of described dc capacitor busbar correspondingly;
Described four IGBT and two clamping diodes are close to the surface of described water-cooling base plate and are fixed on described water-cooling base plate;
The binding post of the binding post of the binding post of the binding post of described four IGBT, two clamping diodes, two Absorption Capacitances and a balance resistance is connected with the lip-deep connecting hole of described commutation circuit busbar correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634263 CN202949366U (en) | 2012-11-27 | 2012-11-27 | Modular structure of three-level converter for wind power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634263 CN202949366U (en) | 2012-11-27 | 2012-11-27 | Modular structure of three-level converter for wind power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949366U true CN202949366U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220634263 Expired - Lifetime CN202949366U (en) | 2012-11-27 | 2012-11-27 | Modular structure of three-level converter for wind power generation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957326A (en) * | 2012-11-27 | 2013-03-06 | 上海电气集团股份有限公司 | Modularized structure for three-level inverter for wind power generation |
| CN107911034A (en) * | 2017-12-26 | 2018-04-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of tri-level inversion power module of marine converter |
-
2012
- 2012-11-27 CN CN 201220634263 patent/CN202949366U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957326A (en) * | 2012-11-27 | 2013-03-06 | 上海电气集团股份有限公司 | Modularized structure for three-level inverter for wind power generation |
| CN107911034A (en) * | 2017-12-26 | 2018-04-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of tri-level inversion power module of marine converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHANGHAI ELECTRIC POWER ELECTRONICS CO.,LTD. Assignor: Shanghai Electric Group Co.,Ltd. Contract record no.: 2014310000107 Denomination of utility model: Modularized structure for three-level inverter for wind power generation Granted publication date: 20130522 License type: Exclusive License Record date: 20140618 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |