CN202084952U - On-grid power converter device of switched reluctance generator - Google Patents
On-grid power converter device of switched reluctance generator Download PDFInfo
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- CN202084952U CN202084952U CN2011201891382U CN201120189138U CN202084952U CN 202084952 U CN202084952 U CN 202084952U CN 2011201891382 U CN2011201891382 U CN 2011201891382U CN 201120189138 U CN201120189138 U CN 201120189138U CN 202084952 U CN202084952 U CN 202084952U
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- igbt
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- brachium pontis
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- side converter
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model discloses an on-grid power converter device of a switched reluctance generator and relates to the field of wind power generation. The on-grid power converter device comprises a generator-side converter unit connected with the switched reluctance generator and a grid-side converter unit connected with a power grid, wherein a DC capacitor is connected in parallel between the generator-side converter unit and the grid-side converter unit. The device has a simple structure, does not need the parallel connection of a storage battery on the DC side, can achieve the effect of bi-directional flow and rapid switching between the generator and the grid, and can meet the on-grid requirements for the grid under appropriate control strategies.
Description
Technical field
The utility model relates to the wind-powered electricity generation field, particularly, relates to a kind of power converter device of grid type switch reluctance generator.
Background technology
When switch reluctance generator is used to wind generator system, the required power current transformer is as the controller of realizing its excitation and generating, especially the grid type generating set also needs to realize the energy conversion of generator and electrical network, and the electric energy that unit is sent satisfies the requirement of electrical network.Wind-powered electricity generation unit based on switch reluctance generator still is in the small-power prototype test stage at present, and the DC side of power converter adopts the storage battery parallel-connection structure, can't satisfy switch reluctance generator and use in the through engineering approaches in wind-powered electricity generation field.
The utility model content
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of switch reluctance generator that can either make to realize excitation, Generation Control, can be applicable to the power converter device of grid type switch reluctance generator with realizing energy conversion between the electrical network again.
The technical scheme that realizes above-mentioned purpose is as follows:
A kind of power converter device of grid type switch reluctance generator comprises generator side converter unit that is connected with switch reluctance generator and the grid side converter cell that is connected with electrical network; Between described generator side converter unit and grid side converter cell, also be parallel with dc capacitor.
Further, described generator side converter unit comprises the brachium pontis of a plurality of parallel connections that equate with the generator unit stator number of phases; Each brachium pontis includes two IGBT and two diodes; Wherein the collector electrode of an IGBT connects with the negative electrode of first diode, and the emitter of an IGBT connects with the negative electrode of second diode; The collector electrode of the 2nd IGBT connects with the anode of first diode, and the emitter of the 2nd IGBT connects with the anode of second diode; And the stator winding two ends of generator are connected with the emitter of a described IGBT and the collector electrode of the 2nd IGBT respectively; The collector electrode of a IGBT in each brachium pontis all is connected with the anode of described dc capacitor; The emitter of the 2nd IGBT in each brachium pontis all is connected with the negative terminal of described dc capacitor.
Further, described grid side converter cell comprises the brachium pontis of three parallel connections; Wherein each brachium pontis is formed by the IGBT module of two end to end series connection; Each IGBT module is composed in parallel by an IGBT and a backward diode; And the collector electrode of the IGBT of the upper end in each brachium pontis is connected with the anode of described dc capacitor; The emitter of the IGBT of the lower end in each brachium pontis is connected with the negative terminal of described dc capacitor.
Further, described grid side converter cell also comprises first reactor, second reactor; The emitter of upper end IGBT in described first reactor and each brachium pontis links to each other; Described second reactor links to each other with electrical network; Also be connected with the three-phase alternating current filtering capacitor between first reactor and second reactor.
Further, described three-phase alternating current filtering capacitor adopts triangle or wye connection to be connected between first reactor and second reactor.
The power converter device of grid type switch reluctance generator of the present utility model, DC side need not multiple-connected battery, can realize the energy two-way flow and the Fast transforms of generator and electrical network, under suitable control strategy, can satisfy the requirement of being incorporated into the power networks of electrical network; The brachium pontis number of generator side converter unit can be adjusted according to the stator number of phases of generator in good time, and structure is very simple.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the power converter device circuit structural representation of grid type switch reluctance generator of the present utility model.
Embodiment
As shown in Figure 1, the power converter device of grid type switch reluctance generator of the present utility model comprises generator side converter unit 100 that is connected with switch reluctance generator and the grid side converter cell 200 that is connected with electrical network; Between generator side converter unit 100 and grid side converter cell 200, also be parallel with dc capacitor 16.
Generator side converter unit 100 comprises the brachium pontis of a plurality of parallel connections that equate with the generator unit stator number of phases (is that three-phase is an example with the stator number of phases); Each brachium pontis includes two IGBT (switching device, it is made up of controlled power electronic power device) and two diodes; Wherein the collector electrode of an IGBT1 (2,3) connects with the negative electrode of first diode 7 (9,11), and the emitter of an IGBT1 (2,3) connects with the negative electrode of second diode 8 (10,12); The collector electrode of the 2nd IGBT4 (5,6) connects with the anode of first diode 7 (9,11), and the emitter of the 2nd IGBT4 (5,6) connects with the anode of second diode 8 (10,12); And the stator winding 13 of generator (14,15) two ends are connected with the emitter of an IGBT1 (2,3) and the collector electrode of the 2nd IGBT4 (5,6) respectively; IGBT1,2 in each brachium pontis, 3 collector electrode all are connected with the anode of dc capacitor 16; The 2nd IGBT4,5 in each brachium pontis, 6 emitter all are connected with the negative terminal of dc capacitor 16.
Grid side converter cell 200 comprises the brachium pontis of three parallel connections; Each brachium pontis is by the IGBT module (17,20 of two end to end series connection; 18,21; 19,22) form; Each IGBT module 17,18,19,20,21,22 is composed in parallel by an IGBT and a backward diode; The IGBT17 of the upper end in each brachium pontis, 18,19 collector electrode are connected with the anode of dc capacitor 16; The IGBT20 of the lower end in each brachium pontis, 21,22 emitter are connected with the negative terminal of dc capacitor 16.
Grid side converter cell 200 also comprises first reactor 23, second reactor 24; Upper end IGBT17,18 in first reactor 23 and each brachium pontis, 19 emitter link to each other; Second reactor 24 links to each other with electrical network or transformer; Also be connected with three-phase alternating current filtering capacitor 25 between first reactor 23 and second reactor 24; Three-phase alternating current filtering capacitor 25 adopts triangle or wye connection to be connected between first reactor 23 and second reactor 24.
When switch reluctance generator is incorporated into the power networks, can adopt above-mentioned converter device, but when the stator number of phases of switch reluctance generator changed, the brachium pontis number that generator side converter unit is made up of two IGBT and two diodes among Fig. 1 need equate with the stator number of phases; Simultaneously, the capacity of dc capacitor needs enough greatly between generator side converter unit and grid side converter cell, to satisfy the stable of direct voltage.
The basic demand that switch reluctance generator is incorporated into the power networks with power converter is the two-way flow that can realize energy.For this reason, each brachium pontis of generator side converter unit all is made up of two controlled switching devices, and finishes afterflow work by two diodes; Grid side converter cell switching device all is made up of fast controllable IGBT; Shunt capacitance between generator side converter unit and the grid side converter cell is the transform part of energy.
The operation principle of this device is: before switch reluctance generator output electric energy, the grid side converter cell becomes direct current energy with the three-phase alternating current of electrical network, and offers generator side converter unit; Generator side converter unit controls IGBT turns on and off, for generator provides exciting current.After generator is in generating state, stator output electric energy is transported to dc capacitor by generator side converter unit, and be transported to electrical network by the grid side converter cell, but the high order harmonic component of inductor-capacitor-inductance three rank filter filtering grid side converter cell electric currents makes grid-connected current satisfy the harmonic standard of electrical network.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. the power converter device of a grid type switch reluctance generator is characterized in that, comprises generator side converter unit that is connected with switch reluctance generator and the grid side converter cell that is connected with electrical network; Between described generator side converter unit and grid side converter cell, also be parallel with dc capacitor.
2. power converter device according to claim 1 is characterized in that, described generator side converter unit comprises the brachium pontis of a plurality of parallel connections that equate with the generator unit stator number of phases;
Each brachium pontis includes two IGBT and two diodes; Wherein the collector electrode of an IGBT connects with the negative electrode of first diode, and the emitter of an IGBT connects with the negative electrode of second diode; The collector electrode of the 2nd IGBT connects with the anode of first diode, and the emitter of the 2nd IGBT connects with the anode of second diode; And the stator winding two ends of generator are connected with the emitter of a described IGBT and the collector electrode of the 2nd IGBT respectively;
The collector electrode of a IGBT in each brachium pontis all is connected with the anode of described dc capacitor; The emitter of the 2nd IGBT in each brachium pontis all is connected with the negative terminal of described dc capacitor.
3. power converter device according to claim 1 and 2 is characterized in that described grid side converter cell comprises the brachium pontis of three parallel connections;
Wherein each brachium pontis is formed by the IGBT module of two end to end series connection; Each IGBT module is composed in parallel by an IGBT and a backward diode;
And the collector electrode of the IGBT of the upper end in each brachium pontis is connected with the anode of described dc capacitor; The emitter of the IGBT of the lower end in each brachium pontis is connected with the negative terminal of described dc capacitor.
4. power converter device according to claim 3 is characterized in that, described grid side converter cell also comprises first reactor, second reactor; The emitter of upper end IGBT in described first reactor and each brachium pontis links to each other; Described second reactor links to each other with electrical network; Also be connected with the three-phase alternating current filtering capacitor between first reactor and second reactor.
5. power converter device according to claim 4 is characterized in that, described three-phase alternating current filtering capacitor adopts triangle or wye connection to be connected between first reactor and second reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201891382U CN202084952U (en) | 2011-06-08 | 2011-06-08 | On-grid power converter device of switched reluctance generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201891382U CN202084952U (en) | 2011-06-08 | 2011-06-08 | On-grid power converter device of switched reluctance generator |
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| Publication Number | Publication Date |
|---|---|
| CN202084952U true CN202084952U (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201891382U Expired - Lifetime CN202084952U (en) | 2011-06-08 | 2011-06-08 | On-grid power converter device of switched reluctance generator |
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| CN (1) | CN202084952U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660129A (en) * | 2015-03-19 | 2015-05-27 | 中国计量学院 | Switch reluctance wind driven generator control system and method |
| CN109921408A (en) * | 2019-03-27 | 2019-06-21 | 中国计量大学 | Double direct-current grid interface switch reluctance motor tune energy systems |
-
2011
- 2011-06-08 CN CN2011201891382U patent/CN202084952U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660129A (en) * | 2015-03-19 | 2015-05-27 | 中国计量学院 | Switch reluctance wind driven generator control system and method |
| CN104660129B (en) * | 2015-03-19 | 2017-04-26 | 中国计量学院 | Switch reluctance wind driven generator control system and method |
| CN109921408A (en) * | 2019-03-27 | 2019-06-21 | 中国计量大学 | Double direct-current grid interface switch reluctance motor tune energy systems |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |