CN202488359U - Matrix AC-AC (Alternate Current to Alternate Current) high voltage frequency converter topological structure - Google Patents
Matrix AC-AC (Alternate Current to Alternate Current) high voltage frequency converter topological structure Download PDFInfo
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- CN202488359U CN202488359U CN201220094150XU CN201220094150U CN202488359U CN 202488359 U CN202488359 U CN 202488359U CN 201220094150X U CN201220094150X U CN 201220094150XU CN 201220094150 U CN201220094150 U CN 201220094150U CN 202488359 U CN202488359 U CN 202488359U
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- frequency converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/225—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode comprising two stages of AC-AC conversion, e.g. having a high frequency intermediate link
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Abstract
The utility model discloses a matrix AC-AC (Alternate Current to Alternate Current) high voltage frequency converter topological structure. According to the topological structure, the AC-AC high voltage frequency conversion is directly carried out; the four-quadrant operation can be implemented; a nonconventional matrix structure is adopted; the number of power switching devices is greatly reduced; and the cost is reduced. Each input phase of a frequency converter is respectively connected to at least two output phase of the frequency converter by at least two power chains and each output phase is respectively connected to at least two input phases by at least two power chains, wherein each power chain is formed by connecting at least one inductance with at least one H-bridge power unit SM in series. The three-phase/three-phase high voltage frequency converter disclosed by the utility model only needs six power chains, the transformer can be not required, and the cost and the volume are greatly reduced; and the four-quadrant work is implemented and the matrix AC-AC high voltage frequency converter topological structure can be widely used in application places of high voltage motor drive, wind power generation, a renewable energy generation grid-connected interface, power system interconnection, low frequency power transmission, a FACTS (Flexible Alternate Current Transmission System) or DFACTS (Distribution Flexible Alternate Current Transmission System) device, a power electronic transformer and the like.
Description
Technical field
The utility model relates to a kind of matrix form friendship-friendship high voltage converter topological structure with non-traditional matrix structure.
Background technology
High voltage converter is a kind of employing electric electronic current change technology; High-tension motor is carried out stepless speed regulation; Satisfy the dedicated electrical device that the production process speed regulating control requires, have characteristics such as efficient height, good energy-conserving effect and power factor height, be widely used in each industrial application.
Owing to the relatively low reason of electronic power switch device withstand voltage; What high voltage converter was the most frequently used is Cascade H bridge type multi-electrical level converter topology structure; For example, publication number is that the Chinese patent disclosed " no-harmonic wave pollution high voltage large power frequency converter " of CN1414692 is exactly a Cascade H bridge type multi-electrical level converter topology structure.High voltage converter also has the diode clamp of employing formula three-level converter topological structure, and for example, publication number is the Chinese patent of CN1996734 disclosed " based on diode-clamped three level 6kV high voltage converters ".High voltage converter adopts the directly high voltage converter topological structure of series connection of IGBT in addition; For example, publication number is that the Chinese patent of CN201054550 disclosed " IGBT directly connect high voltage converter " and publication number are the Chinese patent disclosed " the direct multiple-level serially connected high-voltage frequency conversion and speed-adjusting device of a kind of high energy efficiency IGBT " of CN101826838A.But above-mentioned various high voltage converter all needs input transformer, even the baroque tortuous transformer of some needs, and volume is bigger.At international conference Power Tech Conference Proceedings; " An innovative modular multilevel converter topology suitable for a wide power range " literary composition (the author Lesnicar that publishes among the 2003 IEEE Bologna; A. and Marquardt; R.) and at " Proceedings of the CSEE " rolled up " novel many level VSC submodule capacitance parameter and all pressure is tactful " literary composition (author's fourth champion etc.) that the 30th phase 1-6 page or leaf is published in 2009 the 29th; And publication number is that the Chinese patent disclosed " a kind of transformerless four-quadrant high voltage converter topological structure " of CN102013813A has proposed a kind of modularization cascade multi-level converter topological structure that adopts half-bridge structure, can realize four quadrant running, and not need transformer; But it is bigger that each submodule dc capacitor voltage fluctuation is influenced by a-c cycle; Frequency is low more, and the capacitance voltage fluctuation is big more, so frequency converter is not suitable for starting and operation from low frequency.
The top high voltage converter topological structure of mentioning all belongs to the ac-dc-ac frequency converter structure, promptly earlier becomes direct current (being called rectification) by interchange, becomes interchange (being called inversion) by direct current again.Publication number is the frequency converter topological structure that the Chinese patent of CN102185490A disclosed " handing over the medium voltage frequency converter of Direct Transform " has proposed a kind of friendship-friendship Direct Transform; Can realize the Direct Conversion of AC to AC; But it need boost and step-down transformer, has increased volume and cost.At international conference Industrial Electronics Society; 2001. " A new family of matrix converters " literary composition (Erickson R. W. and Al-Naseem O. A.) of publishing among the IECON ' 01 and " a kind of modeling and simulation of multi-level matrix converter of a novelty " literary composition (author Zhang Huaqiang etc.) of upward publishing at " controlling and decision-making " (2004 the 19th volume the 10th phase 1159-1162 pages or leaves) have proposed a kind of H bridge matrix form multi-level converter topological structure, shown in Fig. 1, Fig. 1 a.This topology adopts the H bridge to replace the bidirectional switch in the classical matrix converter, and at every inductance of all connecting of going up mutually of two AC side, wherein, SM representes the H bridge power unit.But there is the risk of each unit dc bus capacitor direct short-circuit in this topology when control.For example, as shown in Figure 2 if 4 the unit branch roads in the upper left corner of matrix are in conducting state, these 4 unit will form a closed-loop path, cause short circuit between 4 unit dc bus capacitors.In addition, this topology needs 9 power train that are in series by the H bridge power unit, and the device for power switching number is more.
The utility model content
The purpose of the utility model is exactly for addressing the above problem; A kind of matrix form friendship-friendship high voltage converter topological structure is provided; High-pressure frequency-conversion is directly handed over-handed over to this topological structure, can realize four quadrant running, adopts unconventional matrix structure; Significantly reduce the quantity of device for power switching, reduced cost.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of matrix form friendship-friendship high voltage converter topological structure; Each input of said frequency converter all is connected respectively to two output of frequency converter phase at least through at least two power train mutually, and each output then is connected respectively at least two input phases through at least two power train mutually; Wherein each power train is in series by at least one inductance and at least one H bridge power unit SM.
Said power train is in series with at least one H bridge power unit SM by two inductance L, and wherein two inductance L adopt symmetric mode, is placed in the H bridge power unit SM external terminal place at place, two two ends respectively.
Said H bridge power unit is made up of the power electronic switching and the capacitor of four band inverse parallel diodes.
The input of said frequency converter directly or through transformer connects power supply, and output connects motor or transformer or another power supply.
The I/O of said frequency converter is three-phase/three-phase, three-phase/two phases, two phases/three-phase or two phases/two phases mutually.
Compared with prior art, novelty of the utility model and creativeness are embodied in:
1) three-phase/three-phase high-voltage frequency converter only needs six power train, has reduced 1/3rd than needed nine power train of existing matrix form high voltage converter, greatly reduces cost and volume;
2) all include inductance in each power train, avoided the dc bus capacitor of H bridge power unit the risk of direct short-circuit to occur;
3) high voltage converter can not need transformer, has reduced volume and cost.
4) directly carry out AC-AC frequency conversion, need not become direct current to interchange, become interchange to direct current again, improved efficient.
A kind of matrix form friendship-friendship high voltage converter topological structure that the utility model is related; Have that cost is low, volume is little; Can realize four-quadrant operation, can be widely used in that high-voltage motor driving, wind power generation, generation of electricity by new energy and network interface, electrical network are interconnected, low frequency power transmission, FACTS or application scenarios such as DFACTS device and electric power electric transformer.
Description of drawings
Fig. 1 is existing matrix form friendship-friendship high voltage converter topological structure.
Fig. 1 a is the H bridge power unit figure of Fig. 1.
Fig. 2 is the short circuit phenomenon of existing matrix form friendship-friendship high voltage converter topological structure.
Fig. 3 is a kind of topological structure of the three-phase/three phase converter of the utility model.
Fig. 3 a is a kind of power train topological structure of Fig. 3.
Fig. 3 b is another connected mode figure of three-phase/three phase converter topological structure Fig. 3 of the utility model.
Fig. 3 c is another connected mode figure of three-phase/three phase converter topological structure Fig. 3 of the utility model.
Fig. 3 d is another connected mode figure of three-phase/three phase converter topological structure Fig. 3 of the utility model.
Fig. 3 e is another connected mode figure of three-phase/three phase converter topological structure Fig. 3 of the utility model.
Fig. 3 f is another connected mode figure of three-phase/three phase converter topological structure Fig. 3 of the utility model.
Fig. 4 is the three-phase/two phase frequency converter topological structures of the utility model.
Fig. 5 is the two phases/three phase converter topological structure of the utility model.
Fig. 6 is other a kind of topological structure of power train in the frequency converter of the utility model.
Fig. 7 is that the three-phase/three phase converter of the utility model is used for motor-driven.
Fig. 8 is that the frequency converter of the utility model is used for direct drive type wind generating and is incorporated into the power networks.
Fig. 9 is that the frequency converter of the utility model is used for THE UPFC.
It is interconnected that Figure 10 is that the frequency converter of the utility model is used for electrical network.
Figure 11 is the embodiment that the frequency converter of the utility model is used for electric power electric transformer.
Figure 12 is another embodiment that the frequency converter of the utility model is used for electric power electric transformer.
Wherein, 1, H bridge power unit SM, 2, power train, 3, frequency converter topological structure.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1, Fig. 1 a have provided the topology diagram of H bridge power unit SM, by the power electronic switching (S1, S2, S3 and S4) and the capacitor C formation of four band inverse parallel diodes.S1 connects earlier parallelly connected with capacitor C with S2, S3 respectively with S4 again.
Embodiment 1:
Fig. 3-Fig. 3 f has provided a kind of topological structure and a kind of power train topological structure of the three-phase/three phase converter of the utility model, comprises six power train 2.Wherein, power train 2 is in series by inductance L and N H bridge power unit SM1, and N >=1; Input A links to each other with output U and V respectively through two power train 2 mutually, and input B links to each other with output V and W respectively through two power train 2 mutually, and input C links to each other with output W and U respectively through two power train 2 mutually mutually; In other words, output U links to each other with input C and A respectively through two power train 2 mutually, and output V links to each other with input A and B respectively through two power train 2 mutually, and output W links to each other with input B and C respectively through two power train 2 mutually mutually.Input and output are satisfied: each input all is connected respectively to two output phases through two power train 2 mutually, and each output all is connected respectively to two input phases through two power train 2 mutually.
Fig. 3 b-Fig. 3 f has provided other five kinds of topological structures of the three-phase/three phase converter of the utility model; Wherein all satisfy: each input all is connected respectively to two output phases through two power train mutually, and each output all is connected respectively to two input phases through two power train mutually.
Embodiment 2:
Fig. 4 has provided a kind of topological structure of the three-phase/two phase frequency converters of the utility model; Wherein satisfy: each input all is connected respectively to two output phases through two power train 2 mutually, and each output all is connected respectively to three input phases through three power train 2 mutually.
Embodiment 3:
Fig. 5 has provided a kind of topological structure of the two phases/three phase converter of the utility model; Wherein satisfy: each input all is connected respectively to three output phases through three power train 2 mutually, and each output all is connected respectively to two input phases through two power train 2 mutually.
Embodiment 4:
In the present embodiment; Frequency converter can adopt the version of embodiment 1-3; But power train replaces with other a kind of topological structure of power train 2 in the frequency converter of the utility model that Fig. 6 provides; Be in series by two inductance and N H bridge power unit SM1, wherein two inductance adopt symmetric mode, are placed in two external terminal places respectively.
Embodiment 5:
Three-phase/three phase converter that Fig. 7 has provided the utility model is used for motor-driven embodiment, wherein input A, B and C and get access to grid, and output U, V and W are connected motor, realize high-voltage motor four-quadrant frequency conversion drive.
Embodiment 6:
The frequency converter that Fig. 8 has provided the utility model is used for the embodiment that direct drive type wind generating is incorporated into the power networks, wherein input A, B and C and get access to grid, and output U, V and W are connected generator, realize the directly friendship-friendship wind power generation that is incorporated into the power networks.
Embodiment 7:
The frequency converter that Fig. 9 has provided the utility model is used for the embodiment of THE UPFC, wherein input A, B and C and get access to grid, and output U, V and W are connected to series transformer and seal in circuit, and circuit is carried out trend control or suppresses vibration.
Embodiment 8:
The frequency converter that Figure 10 has provided the utility model is used for the embodiment that " back-to-back " be incorporated into the power networks, and wherein input A, B and C are connected electrical network 1, and output U, V and W are connected electrical network 2, realizes that the asynchronous of two electrical networks be incorporated into the power networks.
Embodiment 9:
The frequency converter that Figure 11 has provided the utility model is used for an embodiment of electric power electric transformer, comprises in two three-phase/three phase converters and the three-phase/high frequency transformer.Wherein input A, B and the C of first frequency converter are connected to electrical network 1, and its output U, V be connected with W in the three-phase/primary side of high frequency transformer; Input A2, B2 and the C2 of second frequency converter is connected another electrical network 2, the secondary side of its output U2, V2 and during W2 is connected/high frequency transformer.H bridge power unit quantity in the power train of two frequency converters depend on itself connect the electric pressure of electrical network.
Embodiment 10:
The frequency converter that Figure 12 has provided the utility model is used for an embodiment of electric power electric transformer, comprise two three-phases/two phase frequency converters and one single-phase in/high frequency transformer.Wherein input A, B and the C of first frequency converter are connected to electrical network 1, its output U be connected with V single-phase in/primary side of high frequency transformer; Input A2, B2 and the C2 of second frequency converter is connected another electrical network 2, its output U2 be connected with V2 single-phase in/secondary side of high frequency transformer.H bridge power unit quantity in the power train of two frequency converters depend on itself connect the electric pressure of electrical network.
Claims (5)
1. matrix form friendship-friendship high voltage converter topological structure; It is characterized in that; Each input of said frequency converter all is connected respectively to two output of frequency converter phase at least through at least two power train mutually, and each output then is connected respectively at least two input phases through at least two power train mutually; Wherein each power train is in series by at least one inductance and at least one H bridge power unit SM.
2. matrix form friendship-friendship high voltage converter topological structure as claimed in claim 1; It is characterized in that; Said power train is in series with at least one H bridge power unit SM by two inductance L; Wherein two inductance L adopt symmetric mode, are placed in the H bridge power unit SM external terminal place at place, two two ends respectively.
3. according to claim 1 or claim 2 matrix form friendship-friendship high voltage converter topological structure is characterized in that, said H bridge power unit is made up of the power electronic switching and the capacitor of four band inverse parallel diodes.
4. matrix form friendship-friendship high voltage converter topological structure as claimed in claim 1 is characterized in that, the input of said frequency converter directly or through transformer connects power supply, and output connects motor or transformer or another power supply.
5. matrix form friendship-friendship high voltage converter topological structure as claimed in claim 1 is characterized in that, the I/O of said frequency converter is three-phase/three-phase, three-phase/two phases, two phases/three-phase or two phases/two phases mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220094150XU CN202488359U (en) | 2012-03-14 | 2012-03-14 | Matrix AC-AC (Alternate Current to Alternate Current) high voltage frequency converter topological structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220094150XU CN202488359U (en) | 2012-03-14 | 2012-03-14 | Matrix AC-AC (Alternate Current to Alternate Current) high voltage frequency converter topological structure |
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| CN202488359U true CN202488359U (en) | 2012-10-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545644A (en) * | 2012-03-14 | 2012-07-04 | 山东大学 | Matrix AC (alternating current)-AC high voltage frequency converter topology structure |
| CN106786535A (en) * | 2016-12-29 | 2017-05-31 | 上海科梁信息工程股份有限公司 | Grid stimulating device and its control method |
| WO2019233629A1 (en) * | 2018-06-04 | 2019-12-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Universal charging appliance for direct-current and alternating-current charging |
-
2012
- 2012-03-14 CN CN201220094150XU patent/CN202488359U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545644A (en) * | 2012-03-14 | 2012-07-04 | 山东大学 | Matrix AC (alternating current)-AC high voltage frequency converter topology structure |
| CN102545644B (en) * | 2012-03-14 | 2014-07-16 | 山东大学 | Matrix AC (alternating current)-AC high voltage frequency converter topology structure |
| CN106786535A (en) * | 2016-12-29 | 2017-05-31 | 上海科梁信息工程股份有限公司 | Grid stimulating device and its control method |
| CN106786535B (en) * | 2016-12-29 | 2019-07-23 | 上海科梁信息工程股份有限公司 | Grid stimulating device and its control method |
| WO2019233629A1 (en) * | 2018-06-04 | 2019-12-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Universal charging appliance for direct-current and alternating-current charging |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20150314 |
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| EXPY | Termination of patent right or utility model |