CN103715911A - Four-quadrant cascading type high-voltage inverter device without electric reactor - Google Patents
Four-quadrant cascading type high-voltage inverter device without electric reactor Download PDFInfo
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- CN103715911A CN103715911A CN201410015442.3A CN201410015442A CN103715911A CN 103715911 A CN103715911 A CN 103715911A CN 201410015442 A CN201410015442 A CN 201410015442A CN 103715911 A CN103715911 A CN 103715911A
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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
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Abstract
The invention discloses a four-quadrant cascading type high-voltage inverter device without an electric reactor. The four-quadrant cascading type high-voltage inverter device without the electric reactor comprises a transformer and power module units connected with windings of the secondary side of the transformer, the primary side of the transformer is three-phase windings, the secondary side of the transformer is single-phase windings, and the phases are provided with the windings with the same number; output ends of the power module units connected with the windings with the same phase are sequentially cascaded, each phase rule module unit set is formed by two output ends, and the output ends of a three-phase power module unit set are connected in a Y shape; each power module unit is composed of two controllable H-bridge circuits. The whole high-voltage inverter device is simpler in structure, low in manufacturing cost, small in size, high in weight and convenient to transport, install and maintain.
Description
Technical field
The present invention relates to a kind of frequency converter, be specifically related to a kind of tandem type high voltage converter.
Background technology
At present, regular grade connection type high voltage converter plant by isolating phase shifting transformer, a plurality of power model forms, and is mainly used in the load of blower fan water pump class, does not need four quadrant running, be exactly the feature without energy in bidirectional flow, rectification form is not controlled in the general employing of rectification of inputting in power model.
What the high-pressure frequency-conversion of tandem type can carry out energy in bidirectional flow at present is to adopt to be input as three-phase PWM controlled rectification, rectification form in each power model is not controlled rectification from common diode and is changed to the PWM controlled rectification being undertaken by electronic switching tube, the input of each simultaneously general power model needs the filter reactance of a three-phase, also there is at present the rectification in a kind of power model to adopt electronic switch to carry out the reliable rectification of PWM, the input of each power model is without three-phase filter reactance, by the internal impedance of prime isolating transformer, replace, saved three-phase filter reactance.Therefore, when each power module design has filter reactance, Design of Mechanical Structure is cumbersome, because there is the existence of reactance, make structural design difficulty, and structural volume is large, whole power model weight is large, makes, uses, carries inconvenient, and cost is higher, when without filter reactance, appoint and so exist input link many, control the problems such as complicated.
Summary of the invention
The object of the invention is the deficiency existing for prior art, a kind of four-quadrant tandem type high voltage frequency converter without reactor is provided.
The object of the invention is to realize by following technological means:
Comprise transformer, the primary side of transformer is three phase windings, and secondary side is single-phase winding, and every winding mutually with equal number; The power model unit being connected with each winding of Circuit Fault on Secondary Transformer, connects the output cascade successively with each power model unit of phase winding, and every one after another modular unit group forms two outputs, and the output of three phase power modular unit group adopts Y shape to connect; Each power model unit is comprised of 2 controlled H bridge circuits.
Preferably, in power model unit, the first brachium pontis of the one H bridge circuit and the connected node of the second brachium pontis are first input end, the connected node of the 3rd brachium pontis and the 4th brachium pontis is the second input, the first brachium pontis of the 2nd H bridge circuit and the connected node of the second brachium pontis are the first output, and the connected node of the 3rd brachium pontis and the 4th brachium pontis is for being respectively the second output.
Preferably, also comprise and 2 electric capacity that controlled H bridge circuit is in parallel.
Compared with prior art the present invention has following obvious advantage:
(1) the present invention is by adopting two controlled H bridge circuits to form power model unit, and H bridge, under the effect of control signal, can be realized rectification, frequency conversion function, has guaranteed the two-way flow of energy between electrical network and load;
(2) by the cascade form of a plurality of power models unit, effectively guaranteed the high voltage performance of whole converter plant;
(3) secondary side winding of transformer adopts a plurality of single-phase windings, both avoided secondary side winding in the past adopt a plurality of three phase windings to transformer, make and and power model between the drawback brought of line, also greatly reduce the line between transformer and power model, the structure that makes whole high voltage frequency converter is more simple, cost of manufacture is low, volume is little, weight is strong, is convenient to transportation, installation and maintenance.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the circuit diagram of power model of the present invention unit.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the present invention is described in further detail:
As shown in Figure 1, high voltage frequency converter comprises 1 isolating transformer, the power model unit that a 3N circuit structure is identical.The primary side of transformer is three phase windings, and for being connected with high-voltage fence, secondary side is 3N single-phase winding; 3N power model unit formed whole converting means, and each phase power model unit is formed by N power model.
For output, be the single-phase output winding of A11, A12～AN1, AN2, common N the power model unit of A1～AN successively cascade formed a phase power model unit, and being connected to output is on the single-phase winding of A11, A12～AN1, AN2.Shown in the first input end UI11 of power model unit directly link the A11 end of single-phase winding, the second input UI12 directly links the A12 end of single-phase winding, the input of other unit connects similar, the output of N power cell is connected successively as output, the N of U phase power model unit A1, power model unit A2 connects successively to the input of power model unit AN, be exactly that UO12 connects UO21, UO22 connects UO31, UO(N-1) 2 connect UON1, then UON2 is connected to the output of an other phase VON2, the output UO11 of A1 unit is as the output UO of whole phase, the N of V phase power model unit B 1, power model unit B 2 to the input of power model unit B N are connected successively, be exactly VO12 connect VO21, VO22 connect VO31 ..., VO(N-1) 2 connect VON1, then VON2 is connected to the output of an other phase WON2, and the output VO11 of B1 unit is as the output VO of whole phase, the N of W phase power model unit C1, power model unit C2 connect successively to the input of power model unit CN, be exactly WO12 connect WO21, WO22 connect WO31 ..., WO(N-1) 2 connect WON1, the output WO11 of C1 unit is as the output WO of whole phase, .
Output UON2, the VON2 of three phase power modular unit, WON2 link together, and have just formed three-phase Y shape and have connected, and realize the power supply to load.
Each power model unit is comprised of two two-way controlled H bridge circuits of single-phase full wave, as shown in Figure 2, controllable power semiconductor device K1, K2, K3, K4 have formed the two-way controlled H bridge circuit of first single-phase full wave, and controllable power semiconductor device K5, K6, K7, K8 have formed second two-way controlled H bridge circuit of single-phase full wave; These two controlled H bridge circuits are connected with the form of negative pole with anodal, negative pole according to anodal.Like this, the node that node in first H bridge circuit between power semiconductor K1, k2 has formed between first input end VI11, power semiconductor K3, k4 has formed the second input VI12, and the node that the node in second H bridge circuit between power semiconductor K5, k6 has formed between the first output VO11, power semiconductor K7, k8 has formed the second output VO12.Owing to having adopted two two-way controlled H bridge circuits of single-phase full wave, make energy can carry out two-way flow between electrical network and load.Also be provided with the filter capacitor being in parallel with two H bridge circuits.
Claims (3)
1. without a four-quadrant tandem type high voltage frequency converter for reactor, comprise transformer, it is characterized in that: the primary side of described transformer is three phase windings, secondary side is single-phase winding, and every winding mutually with equal number; Also comprise the power model unit being connected with each winding of described Circuit Fault on Secondary Transformer, connection is with the output cascade successively of power model unit described in each of phase winding, every one after another modular unit group forms two outputs, and the output of three phase power modular unit group adopts Y shape to connect; Each power model unit is comprised of 2 controlled H bridge circuits.
2. preferred a kind of four-quadrant tandem type high voltage frequency converter without reactor according to claim 1, it is characterized in that: in described power model unit, the first brachium pontis of the one H bridge circuit and the connected node of the second brachium pontis are first input end, the connected node of the 3rd brachium pontis and the 4th brachium pontis is the second input, the first brachium pontis of the 2nd H bridge circuit and the connected node of the second brachium pontis are the first output, and the connected node of the 3rd brachium pontis and the 4th brachium pontis is the second output.
3. preferred a kind of four-quadrant tandem type high voltage frequency converter without reactor according to claim 1, is characterized in that: also comprise and 2 electric capacity that controlled H bridge circuit is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015442.3A CN103715911A (en) | 2014-01-14 | 2014-01-14 | Four-quadrant cascading type high-voltage inverter device without electric reactor |
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| CN201410015442.3A CN103715911A (en) | 2014-01-14 | 2014-01-14 | Four-quadrant cascading type high-voltage inverter device without electric reactor |
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| CN201410015442.3A Pending CN103715911A (en) | 2014-01-14 | 2014-01-14 | Four-quadrant cascading type high-voltage inverter device without electric reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171270A (en) * | 2017-07-21 | 2017-09-15 | 国网湖南省电力公司 | Intensive deicing device constant current, constant pressure modularization dynamic passive compensation part |
| CN108306485A (en) * | 2018-02-26 | 2018-07-20 | 新风光电子科技股份有限公司 | A kind of generation method of tandem type high voltage transducer power unit pwm signal |
Citations (5)
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|---|---|---|---|---|
| CN1917349A (en) * | 2006-08-25 | 2007-02-21 | 华中科技大学 | High voltage, large powered convertor in type of transformer with no input/output based on cascade connection |
| JP2008301640A (en) * | 2007-06-01 | 2008-12-11 | Meidensha Corp | Direct high-voltage inverter device |
| CN101800478A (en) * | 2009-12-25 | 2010-08-11 | 艾默生网络能源有限公司 | Cascade connection type power conversion device and power supply system |
| CN102710141A (en) * | 2012-07-06 | 2012-10-03 | 山东新风光电子科技发展有限公司 | Four-quadrant cascade high-voltage frequency conversion device |
| CN203674987U (en) * | 2014-01-14 | 2014-06-25 | 山东新风光电子科技发展有限公司 | Four-quadrant cascading type high-voltage inverter device without electric reactor |
-
2014
- 2014-01-14 CN CN201410015442.3A patent/CN103715911A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917349A (en) * | 2006-08-25 | 2007-02-21 | 华中科技大学 | High voltage, large powered convertor in type of transformer with no input/output based on cascade connection |
| JP2008301640A (en) * | 2007-06-01 | 2008-12-11 | Meidensha Corp | Direct high-voltage inverter device |
| CN101800478A (en) * | 2009-12-25 | 2010-08-11 | 艾默生网络能源有限公司 | Cascade connection type power conversion device and power supply system |
| CN102710141A (en) * | 2012-07-06 | 2012-10-03 | 山东新风光电子科技发展有限公司 | Four-quadrant cascade high-voltage frequency conversion device |
| CN203674987U (en) * | 2014-01-14 | 2014-06-25 | 山东新风光电子科技发展有限公司 | Four-quadrant cascading type high-voltage inverter device without electric reactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171270A (en) * | 2017-07-21 | 2017-09-15 | 国网湖南省电力公司 | Intensive deicing device constant current, constant pressure modularization dynamic passive compensation part |
| CN107171270B (en) * | 2017-07-21 | 2019-04-16 | 国网湖南省电力公司 | Intensive deicing device constant current, constant pressure modularization dynamic passive compensation component |
| CN108306485A (en) * | 2018-02-26 | 2018-07-20 | 新风光电子科技股份有限公司 | A kind of generation method of tandem type high voltage transducer power unit pwm signal |
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Application publication date: 20140409 |