CN202616988U - Half-bridge power converter unit with bypass function - Google Patents
Half-bridge power converter unit with bypass function Download PDFInfo
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- CN202616988U CN202616988U CN 201220204619 CN201220204619U CN202616988U CN 202616988 U CN202616988 U CN 202616988U CN 201220204619 CN201220204619 CN 201220204619 CN 201220204619 U CN201220204619 U CN 201220204619U CN 202616988 U CN202616988 U CN 202616988U
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Abstract
The utility model relates to a half-bridge power converter unit with a bypass function, comprising a half-bridge converter, and at least two switch elements which are configured to be connected with the transistor of the half-bridge converter in parallel, wherein the at least two switch elements are configured to be selectively controlled so as to electrically bypass the half-bridge converter in the case that the half-bridge converter is connected to another electronic circuit.
Description
Technical field
The utility model relates to the half-bridge power converter unit with bypass functionality.
Background technology
The continuity that the very high power that inserted and high-voltage converter must guarantee electric grid operating in transmission and the distrbution network and regardless of the fault in their the formation subelement of some of them.In case understand easily the economic loss that the power grid operation merchant experiences the essence that service disruption causes, the fault that then reaches this characteristic possibly cause huge punishment and economic loss to the converter supplies merchant.
It seems from the viewpoint of system, although the most serious fault comprises that among the subelement that constitutes this transducer some break down and also do not allow converter current almost not have the change flows.In fact this fault is forced forbidding of whole transducer and is followed electric grid operating that serious interruption takes place subsequently.
High power and high-voltage converter must have a kind of like this modular construction, and the general function of this modular construction is that the action through basic sub-units obtains.Like this, basic sub-units can be considered to be H bridge (or M2LC) unit or even the single switch of HVDC (HVDC) phase pin in SVC (the static VAr compensator) transducer for example.
This subelement for the voltage contribution by the synthetic total voltage of this transducer be through design alternative and therefore specially make its operation inessential for transducer.When a spot of formation subelement fault, it can and always should be able to work as the voltage source of the rated value that is no more than them basically.
In the topology that is used in about the application of HVDC system and FACTS (FACTS), also allow work even hope received in the part of transducer under the situation of influence of fault.
The utility model content
A purpose of the utility model is to solve or alleviate at least these problems in this area.
First aspect at the utility model realizes this purpose through a kind of half-bridge power converter unit; This half-bridge power converter unit comprises semi-bridge convertor and at least two switch elements, and at least two switch elements are configured to be connected in parallel with the transistor of said semi-bridge convertor.At least two switch elements are configured to optionally be controlled when being connected to another electronic circuit when semi-bridge convertor electrically bypass semi-bridge convertor.
According to an execution mode of the utility model, at least two switch elements that are configured to be connected in parallel comprise two anti-parallel thyristors.
According to an execution mode of the utility model, said at least two switch elements that are configured to be connected in parallel comprise the anti-parallel thyristor that is connected in parallel with mechanical switch.
According to an execution mode of the utility model, the half-bridge power converter unit also comprises the fault current limiter that is connected in series with said anti-parallel thyristor.
An execution mode according to the utility model; After breaking down in said semi-bridge convertor outside; Said anti-parallel thyristor be configured to be controlled with in a time cycle on both direction the conducting electric current; If said external fault is eliminated then closes said anti-parallel thyristor after the said time cycle, and said mechanical switch is controlled to stay open.
An execution mode according to the utility model; After breaking down in said semi-bridge convertor outside; Said anti-parallel thyristor be configured to be controlled with in a time cycle on both direction the conducting electric current, if the transistor of said semi-bridge convertor is destroyed then said mechanical switch is controlled to close after the said time cycle.
An execution mode according to the utility model; After breaking down in said semi-bridge convertor inside; Said anti-parallel thyristor be configured to be controlled with in a time cycle on both direction the conducting electric current, said mechanical switch is controlled to close after the said time cycle.
According to an execution mode of the utility model, the half-bridge power converter unit also comprises the current sensor that is configured to detect the short circuit current that in said semi-bridge convertor, flows, the generation of the short circuit current indication fault of said detection.
According to the utility model on the other hand, a kind of half-bridge power converter unit device is provided, comprises aforesaid at least two semi-bridge convertor unit that are connected in series.
According to the utility model on the other hand; A kind of full bridge power Changer Device is provided; Comprise aforesaid two half-bridge power converter units that are connected in parallel, at least two of the gained pairs of anti-parallel thyristors are configured to optionally be controlled with the said full bridge power Changer Device of bypass electrically when said full bridge power Changer Device is connected to another electronic circuit as a result.
According to the utility model on the other hand, a kind of full bridge power Changer Device is provided, comprises aforesaid half-bridge power converter unit and another semi-bridge convertor that is connected to said mechanical switch and said anti-parallel thyristor.
An execution mode according to the utility model; The full bridge power Changer Device also comprises the second group of current sensor that is configured to detect the short circuit current that in said another semi-bridge convertor, flows, the generation of the short circuit current indication fault that in said second semi-bridge convertor, flows of said detection.
After the description of having learnt accompanying claims and hereinafter, it is obvious that additional features of the utility model and advantage will become.Those skilled in the art recognize that the different characteristic that can make up the utility model is with generation and those execution mode different embodiment hereinafter described.
Description of drawings
With the mode of example the utility model is described referring now to accompanying drawing, wherein:
Fig. 1 has shown the half-bridge power converter unit according to the execution mode of the utility model;
Fig. 2 has shown another execution mode of the utility model, and this execution mode has shown a plurality of semi-bridge convertors unit that is connected in series;
Fig. 3 has shown another execution mode of the utility model, and this execution mode has shown that two semi-bridge convertor unit that are connected in parallel are to realize the full-bridge converters topology;
Fig. 4 shows two full-bridge converters that are connected according in the link of the execution mode of the utility model;
Fig. 5 shows the half-bridge power converter unit according to another execution mode again of the utility model;
Fig. 6 shows the half-bridge power converter unit according to Fig. 5, and the internal fault of straight-through (shoot-through) form takes place in this half-bridge power converter unit;
Fig. 7 shows the half-bridge power converter unit according to Fig. 5, for this half-bridge power converter unit generation external fault;
Fig. 8 shows another execution mode according to the utility model, and the semi-bridge convertor unit of expander graphs 5 is to produce the full bridge power transducer in this embodiment;
Fig. 9 shows the full bridge power transducer according to Fig. 7, and the internal fault of straight-through form takes place in this full bridge power transducer; And
Figure 10 shows the full bridge power transducer according to Fig. 7, for this full bridge power transducer generation external fault.
Embodiment
Hereinafter will more completely describe the utility model with reference to accompanying drawing, wherein show some execution mode of the utility model in the accompanying drawings.But the utility model may be embodied as many different modes and should not be understood that to be limited to execution mode as herein described; Disclosing of this paper becomes thoroughly with complete and intactly pass on the scope of the utility model to those skilled in the art but mode as an example provides these execution modes.
Fig. 1 has shown the half-bridge power converter unit 100 according to an execution mode of the utility model.This half-bridge power converter unit comprise semi-bridge convertor 101 (for example comprise with two active semi-conductors that are connected in series of transistor 104,105 forms and with these two capacitors that transistor is connected in parallel) and at least two anti-parallel thyristors 102,103 of being connected in parallel with the transistor 104 of semi-bridge convertor 101.Therefore thyristor 102,103 can optionally be controlled with this semi-bridge convertor 101 of bypass electrically when this transducer is connected to another circuit.This thyristor is a kind of like this bidirectional switch, makes this bidirectional switch when electric current being applied to its grid, carry out conducting and need only it just to be carried out conducting by forward bias.Therefore can make two anti-parallel thyristors carry out conducting in the preferential direction arbitrarily through applying suitable signal.In addition, have the ability of switching at high power signal and in HV uses, advantageously use thyristor owing to thyristor.
Fig. 2 has shown another execution mode of the utility model, has wherein shown a plurality of semi-bridge convertor unit 100:1,100:2,100:3 that are connected in series.Allow to work in the situation of this anti-parallel thyristor to a part of malfunctioning or fault of this unit (being the half-bridge power converter unit 100:2 among Fig. 2) therein.Transducer arm/the branch road that comprises the unit 100:1 that is connected in series, 100:2,100:3 can be proceeded work through applying suitable grid current to thyristor 100:2, thereby makes it carry out conducting and bypass/short circuit semi-bridge convertor 101:2.
Fig. 3 has shown another execution mode of the utility model, has shown that wherein two semi-bridge convertor unit 100:1 that are connected in parallel, 100:2 are to realize full-bridge converters topology 200 (being called the link configuration again).Similar with Fig. 1, at least two of gained couples of anti-parallel thyristor 102:1,103:1 and 102:2,103:2 are configured to respectively optionally be controlled with this full bridge power Changer Device 200 of bypass electrically when this full bridge power Changer Device is connected to another electronic circuit as a result.
Fig. 4 shows two full-bridge converters 200:1, the 200:2 that is connected according in the link of the execution mode of the utility model, wherein shows owing to thyristor is realized bypass capability to the bi-directional capability of 102:1,103:1 and 102:2,103:2.Through control two thyristor 102:1,103:2 carries out conducting, with full-bridge converters 200:1 short circuit and therefore bypass.Even in the situation of therefore malfunctioning or fault, comprise that the full-bridge converters 200:1 that is connected in parallel, transducer arm/branch road of 200:2 also can proceed work at full-bridge converters 200:1.
Fig. 5 shows the half-bridge power converter unit 300 according to another execution mode of the utility model.This half-bridge power converter unit comprises foregoing semi-bridge convertor 101.Selectively, grid unit 301,302 is connected to the transistor separately 105,104 of semi-bridge convertor 101.Grid unit is used to handle the high electric current that is applied to transistorized grid, and therefore supplies enough transistor gate signals.In this embodiment, bypass circuit comprises the mechanical switch 303 that the two-way admittance thyristor that is connected in series with anti-parallel thyristor or with fault current limiter (FCL) 305 304 is parallelly connected.Hereinafter, anti-parallel thyristor or two-way admittance thyristor will be represented as anti-parallel thyristor.During the normal running that does not need bypass, anti-parallel thyristor 304 is in closed condition and mechanical switch 303 is opened.When failed because, the grid that activates anti-parallel thyristor 304 is to open this anti-parallel thyristor, so that electric current flows at both direction.FCL 305 is used for the time cycle tp interior protection anti-parallel thyristor 304 of a weak point and is limited in this anti-parallel thyristor and FCL branch road and/or the mobile short circuit current of external system.After this time, tp expired,, then close mechanical switch 303 if find to take place internal fault (for example straight-through, wherein two of this semi-bridge convertor transistors 104,105 carry out conducting simultaneously).Otherwise if the external short circuit fault takes place, then mechanical switch 303 stays open and after removing short trouble, closes anti-parallel thyristor 304.Therefore grid unit 301,302 and transistor 104,105 can return normal running.
To go through the situation that inside and outside fault takes place with reference to figure 6 and 7 respectively hereinafter.Internal fault is meant that fault occurs in the semi-bridge convertor 101 self.
With reference now to Fig. 6,, Fig. 6 shows the internal fault of straight-through form.Use current sensor 309 and 310 to detect the short circuit current of the transistor 104,105 of flowing through.When having short circuit current, the risk that exists insulated gate bipolar transistor 104,105 (IGBT) to explode owing to the amplitude of this huge short circuit current.Just can open anti-parallel thyristor 304 in case detect short circuit current by transducer 309 and 310.Through current will not flow through anti-parallel thyristor 304 and FCL 305 branch roads are till the IGBT of bottom 104 blasts.Its reason is that FCL 305 flows fault current limiting in anti-parallel thyristor 304.Fault current changes the IGBT 104 of the bottom of flowing through into.After IGBT 105,104 boths top and the bottom were destroyed owing to overcurrent, through current was with exhausting naturally.Still can pass through anti-parallel thyristor 304 conducting system powers at short notice, up to mechanical switch 303 forever closed with from anti-parallel thyristor 304 till mechanical switch 303 delivered currents.
With reference now to Fig. 7,, Fig. 7 shows external fault, promptly occurs in another unit or the fault in the system that uses half-bridge power converter unit 300.Use current sensor 309 and 310 to detect because the short circuit current that external fault produces.Under situation about being without loss of generality, the IGBT 105 that supposes top is just at the conducting short circuit current.For example form is that the control electronic device of grid unit 30 is with the IGBT 105 that attempts closing top.Simultaneously, activate the grid of anti-parallel thyristor 304 owing to the detection that detects short circuit current by current sensor 309.Then this short circuit current is delivered to anti-parallel thyristor 304 branch roads from the IGBT 105 on top.Because these anti-parallel thyristors of FCL 305 protection, so can close the IGBT 105 on top safely and therefore externally be protected between age at failure.After removing external fault, close anti-parallel thyristor 304, and the GU 301,302 of IGBT 105,104 top and the bottom can return normal handover operation.Whether the state of GU can indicate IGBT to be out of order owing to overcurrent or externally whether they still in shape after the short trouble.If IGBT 105,104 is destroyed by current transient, then mechanical switch 303 will be closed and with unit 300 bypasses.Otherwise mechanical switch 303 stays open and GU 301,302 and IGBT 105,104 return normal running.
Fig. 8 shows another execution mode according to the utility model, will have form in this embodiment and be mechanical switch 303, anti-parallel thyristor 304 and FCL 305 before the semi-bridge convertor with bypass circuit 300 described be connected to another semi-bridge convertor 401 to set up full bridge power transducer 400.
Situation as the execution mode that in Fig. 5, is shown is such, below will go through the situation that the inside and outside fault in this execution mode takes place with reference to figure 9 and 10 respectively.
At first with reference to figure 9, Fig. 9 shows the internal fault of the straight-through form of full bridge power transducer 400.Use current sensor 309 and 310 to detect the short circuit current of the transistor 104,105 of flowing through, use current sensor 307 and 308 to detect the short circuit current of the transistor 402,403 of flowing through.When having short circuit current, existence transistor branch road separately will be by the risk of heavy damage.In case by in transducer 307,308,309 or 310 any one detect short circuit current after, just open anti-parallel thyristor 304.Through current will not flow through anti-parallel thyristor 304 and FCL 305 branch roads are till two transistor branch roads (104,105 or 402,403) puncture.After arbitrary in two transistor branch roads 104,105 or 402,403 was destroyed owing to overcurrent, through current was with exhausting naturally.Still can pass through anti-parallel thyristor 304 conducting system powers at short notice, up to mechanical switch 303 forever closed with from anti-parallel thyristor 304 till mechanical switch 303 delivered currents.
With reference now to Figure 10,, Figure 10 shows external fault, promptly occurs in another unit or the fault in the system that uses half-bridge power converter unit 300.Use current sensor 307,308,309 or 310 to detect because the short circuit current that external fault produces.Under situation about being without loss of generality, suppose that transistor 104 and 402 is just at the conducting short circuit current.Grid unit 302 and 404 is with attempting closing corresponding transistor.Simultaneously, activate the grid of anti-parallel thyristor 304 owing to the detection that detects short circuit current by current sensor 307 and 310.Then this short circuit current is delivered to anti-parallel thyristor 304 branch roads from transistor 104 and 402.Because these anti-parallel thyristors of FCL 305 protection, so can close transistor 104 and 402 and the IGBT 105 on top and therefore externally being protected between age at failure safely.After removing external fault, can close anti-parallel thyristor 304, and whole transistorized GU can return normal handover operation.Whether the state of GU can indicate transistor to be out of order owing to overcurrent or externally whether they still in shape after the short trouble.If GU and transistor are destroyed by current transient, then mechanical switch 303 will be closed and with unit 300 and another semi-bridge convertor 401 bypasses.Otherwise mechanical switch 303 stays open and GU and transistor return normal running.
Should be noted that employed FCL 305 is selectable in the various execution modes, in this situation, can use thyristor, GTO or press-fit IGBT and set up anti-parallel thyristor 304 with short trouble mode capabilities.As previously mentioned, the advantage of FCL 305 is to protect anti-parallel thyristor 304 to avoid excessive short circuit current, but it has increased the cost of converter unit.Under the situation that does not have FCL 305, under normal or good condition, close anti-parallel thyristor 304 and open mechanical switch 303.When failed because, stop anti-parallel thyristor 304 till short circuit current exhausts.The fault after-current can flow in anti-parallel thyristor 304 branch roads in short time cycle tp, till mechanical switch 303 is closed according to the state of inside or external fault or keeps being in the open mode.If open anti-parallel thyristor 304 too early, then have benefited from short trouble pattern and this converter unit of bypass safely still of this anti-parallel thyristor so that through current is flowed through and destroyed this anti-parallel thyristor.
Claims (12)
1. a half-bridge power converter unit (100) is characterized in that comprising:
Semi-bridge convertor (101);
At least two switch elements (102,103); Be configured to be connected in parallel with the transistor (104,105) of said semi-bridge convertor, said at least two switch elements are configured to optionally be controlled with the said semi-bridge convertor of bypass electrically when said semi-bridge convertor is connected to another electronic circuit.
2. half-bridge power converter unit as claimed in claim 1 (100) is characterized in that, said at least two switch elements (102,103) that are configured to be connected in parallel comprise two anti-parallel thyristors.
3. half-bridge power converter unit as claimed in claim 1 (300) is characterized in that, said at least two switch elements that are configured to be connected in parallel comprise the anti-parallel thyristor (304) that is connected in parallel with mechanical switch (303).
4. half-bridge power converter unit as claimed in claim 3 (300) is characterized in that also comprising the fault current limiter (305) that is connected in series with said anti-parallel thyristor (304).
5. like any described half-bridge power converter unit (300) in claim 3 or 4; It is characterized in that; After breaking down in said semi-bridge convertor (101) outside; Said anti-parallel thyristor (304) be configured to be controlled with in a time cycle tp on both direction the conducting electric current, if said external fault is eliminated then closes said anti-parallel thyristor after said time cycle tp, and said mechanical switch (303) is controlled to stay open.
6. like any described half-bridge power converter unit (300) in claim 3 or 4; It is characterized in that; After breaking down in said semi-bridge convertor (101) outside; Said anti-parallel thyristor (304) be configured to be controlled with in a time cycle tp on both direction the conducting electric current, if the transistor of said semi-bridge convertor (104,105) is destroyed then said mechanical switch (303) is controlled to close after said time cycle tp.
7. like any described half-bridge power converter unit (300) in claim 3 or 4; It is characterized in that; After breaking down in said semi-bridge convertor (101) inside; Said anti-parallel thyristor (304) be configured to be controlled with in a time cycle tp on both direction the conducting electric current, said mechanical switch (303) is controlled to close after said time cycle tp.
8. half-bridge power converter unit as claimed in claim 5 (300); It is characterized in that also comprising the current sensor (309,310) that is configured to detect the short circuit current that in said semi-bridge convertor (101), flows, the generation of the short circuit current indication fault of said detection.
9. a half-bridge power converter unit device is characterized in that comprising like described at least two the semi-bridge convertor unit that are connected in series of arbitrary aforementioned claim (100: 1,100: 2).
10. a full bridge power Changer Device (200) comprises two half-bridge power converter units that are connected in parallel as claimed in claim 2 (100: 1,100: 2), it is characterized in that, at least two of the gained pairs of anti-parallel thyristors are (102: 1,103: 1 as a result; 102: 2,103: 2) be configured to optionally be controlled with the said full bridge power Changer Device of bypass electrically when said full bridge power Changer Device is connected to another electronic circuit.
11. a full bridge power Changer Device (400) is characterized in that comprising like any described half-bridge power converter unit (300) among the claim 3-8 and is connected to said mechanical switch (303) and another semi-bridge convertor (401) of said anti-parallel thyristor (304).
12. full bridge power Changer Device as claimed in claim 11 (400); It is characterized in that also comprising the second group of current sensor (307,308) that is configured to detect the short circuit current that in said another semi-bridge convertor (401), flows, the generation of the short circuit current indication fault that in said second semi-bridge convertor, flows of said detection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220204619 CN202616988U (en) | 2012-05-03 | 2012-05-03 | Half-bridge power converter unit with bypass function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220204619 CN202616988U (en) | 2012-05-03 | 2012-05-03 | Half-bridge power converter unit with bypass function |
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| CN 201220204619 Expired - Lifetime CN202616988U (en) | 2012-05-03 | 2012-05-03 | Half-bridge power converter unit with bypass function |
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| CN105324924A (en) * | 2013-04-18 | 2016-02-10 | Abb技术有限公司 | Mechanical bypass switch device, converter arm and power converter |
| CN106329950A (en) * | 2015-07-01 | 2017-01-11 | 南京南瑞继保电气有限公司 | Driving signal modulation method of modular multilevel converter and fault isolation method |
| WO2018108143A1 (en) * | 2016-12-16 | 2018-06-21 | 台达电子企业管理（上海）有限公司 | Modular power supply system |
| CN108347180A (en) * | 2017-01-24 | 2018-07-31 | 台达电子企业管理（上海）有限公司 | The method that cascade converter system and its converter module put into operation |
| US10148164B2 (en) | 2017-02-27 | 2018-12-04 | Delta Electronics (Shanghai) Co., Ltd. | Topology of composite cascaded high-voltage and low-voltage modules |
| CN109245503A (en) * | 2018-09-18 | 2019-01-18 | 全球能源互联网研究院有限公司 | A kind of bypass circuit and its control method |
| TWI661634B (en) * | 2016-12-16 | 2019-06-01 | 大陸商台達電子企業管理（上海）有限公司 | Modular power system |
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- 2012-05-03 CN CN 201220204619 patent/CN202616988U/en not_active Expired - Lifetime
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| CN105324924B (en) * | 2013-04-18 | 2018-12-25 | Abb瑞士股份有限公司 | Mechanical bypass switch device, converter arm and power inverter |
| CN105324924A (en) * | 2013-04-18 | 2016-02-10 | Abb技术有限公司 | Mechanical bypass switch device, converter arm and power converter |
| CN106329950A (en) * | 2015-07-01 | 2017-01-11 | 南京南瑞继保电气有限公司 | Driving signal modulation method of modular multilevel converter and fault isolation method |
| CN106329950B (en) * | 2015-07-01 | 2019-01-08 | 南京南瑞继保电气有限公司 | Modularization multi-level converter driving signal modulator approach and failure separation method |
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| US11463016B2 (en) | 2016-12-16 | 2022-10-04 | Delta Electronics (Shanghai) Co., Ltd | Modular power supply system |
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| WO2018108143A1 (en) * | 2016-12-16 | 2018-06-21 | 台达电子企业管理（上海）有限公司 | Modular power supply system |
| TWI661634B (en) * | 2016-12-16 | 2019-06-01 | 大陸商台達電子企業管理（上海）有限公司 | Modular power system |
| US10374504B2 (en) | 2016-12-16 | 2019-08-06 | Delta Electronics (Shanghai) Co., Ltd | Power unit and power electronic converting device |
| US10924030B2 (en) | 2016-12-16 | 2021-02-16 | Delta Electronics (Shanghai) Co., Ltd | Modular power supply system |
| CN108347180B (en) * | 2017-01-24 | 2019-11-05 | 台达电子企业管理（上海）有限公司 | The method that cascade converter system and its converter module put into operation |
| CN108347180A (en) * | 2017-01-24 | 2018-07-31 | 台达电子企业管理（上海）有限公司 | The method that cascade converter system and its converter module put into operation |
| US10148164B2 (en) | 2017-02-27 | 2018-12-04 | Delta Electronics (Shanghai) Co., Ltd. | Topology of composite cascaded high-voltage and low-voltage modules |
| CN110880860A (en) * | 2018-09-06 | 2020-03-13 | Abb瑞士股份有限公司 | Modular DC arc eliminator |
| CN110880860B (en) * | 2018-09-06 | 2023-03-21 | 日立能源瑞士股份公司 | Modular DC arc eliminator |
| CN109245503A (en) * | 2018-09-18 | 2019-01-18 | 全球能源互联网研究院有限公司 | A kind of bypass circuit and its control method |
| EP3796539A1 (en) * | 2019-09-17 | 2021-03-24 | Maschinenfabrik Reinhausen GmbH | Modular switching cell |
| WO2021052730A1 (en) * | 2019-09-17 | 2021-03-25 | Maschinenfabrik Reinhausen Gmbh | Modular switching cell |
| EP3796539B1 (en) | 2019-09-17 | 2022-11-23 | Maschinenfabrik Reinhausen GmbH | Modular switching cell |
| US12003185B2 (en) | 2019-09-17 | 2024-06-04 | Maschinenfabrik Reinhausen Gmbh | Modular switching cell |
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