WO2012143245A1 - Montage comprenant un convertisseur de puissance - Google Patents

Montage comprenant un convertisseur de puissance Download PDF

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Publication number
WO2012143245A1
WO2012143245A1 PCT/EP2012/056206 EP2012056206W WO2012143245A1 WO 2012143245 A1 WO2012143245 A1 WO 2012143245A1 EP 2012056206 W EP2012056206 W EP 2012056206W WO 2012143245 A1 WO2012143245 A1 WO 2012143245A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
power converter
short
voltage
thyristor
Prior art date
Application number
PCT/EP2012/056206
Other languages
German (de)
English (en)
Inventor
Andreas STEIMEL
Matthias GORSKI
Volker Staudt
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2012143245A1 publication Critical patent/WO2012143245A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
    • H02H7/1222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the input circuit, e.g. transients in the DC input
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • 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
    • H02M5/40—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 with intermediate conversion into dc
    • H02M5/42—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 with intermediate conversion into dc by static converters
    • H02M5/44—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • 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

Definitions

  • the invention relates to an arrangement with the Merkma len according to the preamble of claim 1.
  • a connected to a power grid converter can be destroyed by a short circuit on his DC ⁇ side in a very short time, for example, in only a few Mil lise Has, by the rapidly building up high short-circuit current. This is because normally found in converters power semiconductors are hardly overload capacity, as opposed to electric machines and are not oversized for cost reasons usually arrives ⁇ worth.
  • the invention is accordingly based on the object of specifying a An ⁇ order with a power converter, which ensures effective protection of the converter in the case of Gleichwoodsseiti- short circuit.
  • the invention provides that a short ⁇ normally open circuit is directly or indirectly connected to the AC side of the power converter, where ⁇ is suitable for the short-circuiting, in the case of a short circuit on the DC side of the power converter to generate an additional short circuit on the AC side of the power converter and As a result, the voltage applied to the change ⁇ voltage side of the power converter on or
  • An essential advantage of the arrangement according to the invention is that the power converter is very effectively prevented from destruction by the short-circuiting circuit provided on the AC side according to the invention. is protected. Occurs namely on the DC side of a short circuit, an additional short-circuit on the AC side is pre-call ⁇ by the short-circuiting device circuit so that the input side of the converter short ⁇ closed and an overcurrent within the converter un ⁇ terbunden is.
  • Another significant advantage of the arrangement according to the invention is that the protection of the power converter protective devices can be used on the AC side, which are anyway present in electrical engineering arrangements anyway. Usually in AC networks protective devices and protective devices are in the event of an overcurrent or a short circuit
  • the short-circuiting circuit has a DC circuit. comprising a thyristor integrated therein, which leads after ignition the short-circuit current for the additional short circuit.
  • Thyristors are very suitable for the short-circuiting circuit, since they can result in a very high short-circuit current for a relatively long period of time, which is greater than the usual disconnection time of protective devices in AC networks, without being destroyed themselves.
  • the power converter has at least three connection conductors for feeding in a multiphase AC voltage on its AC voltage side and the rectifier circuit is connected directly or indirectly to the at least three connection conductors.
  • the voltage applied to the rectifier circuit AC voltage is at least three-phase.
  • a polyphase configuration of the rectifier circuit ensures that the rectifier circuit can generate a DC voltage that is consistently so large that the thyristor remains on after a single ignition. This allows the thyristor, or continuously without interruption after linked with S ⁇ gen ignition (that game, for a period of time corresponding at least to the Zweifa ⁇ chen the period of the applied AC voltage at the input side ⁇ ) to remain switched on.
  • the rectifier circuit has a bridge circuit with two bridge connections, to which the thyristor Ristor is connected.
  • the rectifier circuit comprises two center-point circuits and the thyristor electrically connects the two center-point circuits to one another.
  • the assembly includes an ignition circuit which is connected to the DC side of the power converter in communication, and generates in the presence of a short circuit on the DC clamping ⁇ voltage side a firing signal for the thyristor ,
  • the power converter comprises at least two parallel-connected series circuits whose outer terminals form two DC voltage terminals of the power converter.
  • Each of the parallel-connected series circuits may, for example, each comprise at least two series-connected switching units.
  • each of the parallel-connected series circuits each comprising at least two series-connected inverter modules, which each have at least two switches and a capacitor ⁇ .
  • the invention also relates to a method for protecting a power converter, which has an AC ⁇ side and a DC side.
  • Figure 1 shows an embodiment of an arrangement
  • Figure 2 shows an embodiment of an inventive
  • Figure 4 shows an embodiment of an arrangement
  • Figure 5 shows an embodiment of an arrangement
  • FIG. 1 shows an arrangement 10 with a converter 20, which comprises an AC voltage side 21 and a DC voltage side 22.
  • the AC voltage side 21 of the power converter 20 is connected via inductors L to a
  • Switching device 30 is connected, via which the AC voltage side 21 of the converter 20 with a removable clamping ⁇ communicates voltage network 40th
  • the AC ⁇ network 40 may be any network such as a public power grid.
  • the power converter 20 is n-stranded on its AC voltage side 21 and has n connection conductors, which are identified by the reference symbols 50a, 50b, 50c and 50n.
  • FIG. 1 shows an ignition circuit 70 which, inter alia, comprises a current measuring device 71 with which direct current I is measured on the DC voltage side 22 of the power converter 20. Connected to the current measuring device 71 is an evaluation device 72 belonging to the ignition circuit 70, whose output is connected to the thyristor 62 of the short-circuiting circuit 60 and can transmit an ignition signal Z to the thyristor 62.
  • the arrangement 10 according to FIG. 1 can be operated, for example, as follows:
  • the converter 20 in the case of a short circuit on the DC side 22 in front of a cerium ⁇ interference is protected by the fact that the thyristor 62 of the short-circuiter circuit 60 on the AC voltage side 21 also causes a short circuit, through which the current Rich ⁇ ter 20 is almost switched off, although he remains initially connected to the AC voltage network 40.
  • the thyristor 62 is preferably dimensioned such that it can conduct the short-circuit current Ik on the AC side at least until the switching device 30 of the assembly 10 is triggered and the power converter 20 and the short-circuiting circuit 60 actually from the AC power 40 are disconnected.
  • protective devices are normally present which cause the switching device 30 to be triggered in a period of time. niger than 80 ms (corresponds to a duration of 4 period lengths of the AC voltage with an alternating voltage of 50 Hz).
  • Thyristors can be such dimen ⁇ sionieren easily that they can carry short-circuit currents of such metal removal nen.
  • FIG. 2 shows an exemplary embodiment of an arrangement 10, in which the power converter 20 comprises two power converter units 120 and 220.
  • the upper converter unit 120 in FIG. 2 forms the positive output "+" of the power converter 20 on the output side.
  • the lower converter unit 220 in FIG. 2 forms the negative terminal "-" of the power converter 20.
  • the two converter units 120 and 220 are connected via inductors L to a switching device 30 which is connected to an AC voltage network 40.
  • the arrangement 10 according to FIG. 2 furthermore has a short-circuiting circuit 60, which comprises two center-point circuits 63 and 64 as well as a thyristor 62.
  • the thyristor 62 electrically connects the two center circuits 63 and 64 with each other.
  • the alternating voltage sides of the two converter units 120 and 220 or the alternating voltage side of the converter 20 formed by these two converter units is n-string, so that a multiphase AC voltage is applied to the short-circuiting circuit 60.
  • the diodes D of the two center circuits 63 and 64 direct the multi-phase applied to the short-circuiting circuit 60 on the input side AC voltage equal, so that at the thyristor 62 continuously or consistently a positive DC voltage U is applied.
  • the thyristor 60 will permanently conduct a current, as long as the multiphase AC voltage of the AC voltage network 40 is applied to the short-circuiting circuit 60.
  • an ignition circuit 70 Connected to the thyristor 62 of the short-circuiting circuit 60 is an ignition circuit 70 which monitors the DC side 22 of the power converter 20 for the occurrence of a short circuit on the DC side.
  • the ignition ⁇ circuit 70 may comprise, for example, a current measuring device 71 and an evaluation device 72, as has already been explained in connection with FIG. 1
  • the evaluation device 72 of the ignition circuit 70 will generate an ignition signal Z, with which the thyristor 62 is ignited. Since - as already explained - to the thyristor 62 is always present a po ⁇ sitive DC voltage U, the thyristor will cause a short circuit on the AC side of the converter 20 permanently after a single ignition 62nd The short-circuit current on the AC side is from
  • the two converter units 120 and 220 of the power converter 20 are effectively protected by the short-circuiting circuit 60 in the event of a short circuit on the DC side 22, namely, the thyristor 62 after a single ignition in the event of a short circuit on the
  • FIG. 3 shows an arrangement 10 with a power converter 20, a switching device 30, an AC voltage network 40 and a short-circuiting device 60.
  • the power converter 20 is a three-strand two-phase mains converter which comprises three series connections R 1, R 2 and R 3.
  • Each of the three series circuits Rl, R2 and R3 has two outer terminals, one of which is connected to the positive terminal of the power converter 20 and the other in each case to the negative terminal of the power converter 20.
  • Each of the three series circuits Rl, R2 and R3 has, in the embodiment according to Figure 3 each have two ge ⁇ switched in series switch units, which are identified by the reference numeral 320th Each switching unit 320 has one
  • Switch 321 for example in the form of a transistor (eg., IGBT: I_nsulated Gate Bipolar Transistor) and a diode 322 connected in parallel.
  • the switch 321 of the Wenneinhei ⁇ th 320 are driven out of phase by a not shown in the Figure 3 control unit of the power converter 20 to the DC voltage to erzeu ⁇ gene on the DC voltage side 22nd
  • the short-circuiting circuit 60 comprises a bridge circuit 61, to whose terminals 61a and 61b a thyristor 62 is connected.
  • the thyristor 62 is connected to an ignition circuit 70 in the case of a short circuit on the DC side the power converter 20 generates a firing signal Z, to ignite the Thy ⁇ RISTOR 62nd
  • the converter 20 in the embodiment shown in Fi gur ⁇ is three strands 3, is located on the short-circuiter circuit 60 to a three-phase AC voltage. This ensures that a positive external DC voltage is applied to the thyristor 62 at each time point U, so that a short-circuit current Ik will flow through the thyristor 62 to be linked with S ⁇ gen ignition by the ignition circuit 70 permanently, as long as the three-phase AC voltage present on the AC side is.
  • the power converter 20 is protected from destruction, because the power converter 20 is quasi off for lack of external power.
  • the short-circuit current Ik will be detected by a protective device not shown on the AC side and not shown in FIG. 3, so that after a relatively short time the switching device 30 will be opened and both the short-circuiting circuit 60 and the power converter 20 will be disconnected from the AC voltage network 40 ,
  • the embodiment according to FIG. 3 corresponds to the exemplary embodiments according to FIGS. 1 and 2.
  • each converter module 420 includes two switches 421, two diodes 422 and a capacitor 423rd
  • the outer terminals of the three series circuits R1, R2 and R3 form the plus terminal "+” and the minus terminal "-" of the power converter 20.
  • the switch 421 of the converter modules 420 are out of phase driven by a not shown in the Figure 4 control unit of the power converter 20 to generate on the DC clamping voltage side ⁇ 22 is a DC voltage.
  • a short-circuiting circuit 60 On the AC side of the power converter 20, a short-circuiting circuit 60 is connected, which comprises two center-point circuits 63 and 64, which are electrically connected to each other by a thyristor 62. With the short-circuiter circuit 60 is an ignition circuit 70 in compound 20 generates a firing signal Z for the Thy ⁇ RISTOR 62 in the event of a short circuit on the DC clamping ⁇ voltage side of the converter, whereby the alternating voltage side of the converter is shorted 20th
  • Switching off the three-phase AC voltage on the AC side of the power converter 20 is done by the switching device 30, which separates the power converter 20 and the short-circuiting circuit 60 from the AC mains 40 as soon as protective devices, which are not shown in the figure 4, are triggered due to the short-circuit current Ik.
  • FIG. 5 shows an embodiment which substantially corresponds to the arrangement according to FIG. In difference to the figure 4 is in the arrangement of Figure 5 a
  • Protective device 500 on the AC side of the converter present the output side is connected to the switching ⁇ device 30 and a measuring device 80 in connection.
  • the protective device 500 monitors the AC voltage side and the alternating voltage network 40 for errors and switches the switching device 30 when it detects a short circuit or other relevant fault on the alternating voltage side clamping ⁇ .
  • the protection device 500 is in communication with the ignition circuit 70, so that it will receive the ignition signal Z from this once a fault has been detected on the DC side.
  • 500 already switch off the switching device 30, the Schutzeinrich ⁇ tung, when the thyristor 62 is turned on and the short circuit current Ik is triggered on the alternating voltage side.
  • Such a connection between the protective device 500 and the ignition circuit 70 leads to a gain in speed, since the protective device 500 does not first have to detect the short-circuit current Ik on the AC side, but can react directly.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

L'invention concerne, entre autres, un montage comprenant un convertisseur de puissance (20) qui présente un côté tension alternative (21) et un côté tension continue (22). Selon l'invention, un circuit court-circuiteur (60) est raccordé directement ou indirectement au côté tension alternative (21) du convertisseur de puissance (20), ledit circuit court-circuiteur (60) étant apte à générer, en cas de court-circuit du côté tension continue (22) du convertisseur de puissance (20), un court-circuit supplémentaire du côté tension alternative (21) du convertisseur de puissance (20) afin de réduire la tension alternative monophasée ou polyphasée présente du côté tension alternative (21) du convertisseur de puissance (20).
PCT/EP2012/056206 2011-04-19 2012-04-04 Montage comprenant un convertisseur de puissance WO2012143245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011007679 2011-04-19
DE102011007679.4 2011-04-19

Publications (1)

Publication Number Publication Date
WO2012143245A1 true WO2012143245A1 (fr) 2012-10-26

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015168830A1 (fr) * 2014-05-04 2015-11-12 Abb Technology Ag Protection contre les défauts dans les systèmes de distribution de courant continu basés sur des convertisseurs
EP3001552A1 (fr) * 2014-09-23 2016-03-30 Alstom Technology Ltd Convertisseur de source de tension et commande de celui-ci
DE102015202243A1 (de) * 2015-02-09 2016-08-11 Siemens Aktiengesellschaft Anordnung für eine Bahnstromversorgung und Verfahren zum Betrieb der Anordnung
US9419428B2 (en) 2014-05-15 2016-08-16 Abb Technology Ag Protection device for DC collection systems
EP3145042A1 (fr) * 2015-09-16 2017-03-22 WE Tech Solutions Oy Agencement de générateur à arbre d'un navire
US9748762B2 (en) 2014-03-21 2017-08-29 Abb Schweiz Ag Method and apparatus for the protection of DC distribution systems
US9762047B2 (en) 2015-06-16 2017-09-12 Abb Technology Ltd. Technologies for zonal fault protection of DC distribution systems
DE102017102807A1 (de) 2017-02-13 2018-08-16 Woodward Kempen Gmbh Schutzvorrichtung für Schaltanlage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080225559A1 (en) * 2007-03-15 2008-09-18 Noboru Yanada Switching-mode power supply
WO2010025758A1 (fr) * 2008-09-05 2010-03-11 Siemens Aktiengesellschaft Dispositif présentant un convertisseur de fréquence

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080225559A1 (en) * 2007-03-15 2008-09-18 Noboru Yanada Switching-mode power supply
WO2010025758A1 (fr) * 2008-09-05 2010-03-11 Siemens Aktiengesellschaft Dispositif présentant un convertisseur de fréquence

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JARED CANDELARIA ET AL: "VSC-HVDC system protection: A review of current methods", POWER SYSTEMS CONFERENCE AND EXPOSITION (PSCE), 2011 IEEE/PES, IEEE, 20 March 2011 (2011-03-20), pages 1 - 7, XP031870640, ISBN: 978-1-61284-789-4, DOI: 10.1109/PSCE.2011.5772604 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9748762B2 (en) 2014-03-21 2017-08-29 Abb Schweiz Ag Method and apparatus for the protection of DC distribution systems
WO2015168830A1 (fr) * 2014-05-04 2015-11-12 Abb Technology Ag Protection contre les défauts dans les systèmes de distribution de courant continu basés sur des convertisseurs
US10693293B2 (en) 2014-05-04 2020-06-23 Abb Schweiz Ag Fault protection in converter-based DC distribution systems
US9419428B2 (en) 2014-05-15 2016-08-16 Abb Technology Ag Protection device for DC collection systems
EP3001552A1 (fr) * 2014-09-23 2016-03-30 Alstom Technology Ltd Convertisseur de source de tension et commande de celui-ci
DE102015202243A1 (de) * 2015-02-09 2016-08-11 Siemens Aktiengesellschaft Anordnung für eine Bahnstromversorgung und Verfahren zum Betrieb der Anordnung
US9762047B2 (en) 2015-06-16 2017-09-12 Abb Technology Ltd. Technologies for zonal fault protection of DC distribution systems
EP3145042A1 (fr) * 2015-09-16 2017-03-22 WE Tech Solutions Oy Agencement de générateur à arbre d'un navire
CN106549361A (zh) * 2015-09-16 2017-03-29 WE Tech公司 一种船舶的轴发电机装置
CN106549361B (zh) * 2015-09-16 2020-02-14 WE Tech公司 一种船舶的轴发电机装置
DE102017102807A1 (de) 2017-02-13 2018-08-16 Woodward Kempen Gmbh Schutzvorrichtung für Schaltanlage
DE102017102807B4 (de) * 2017-02-13 2020-09-10 Woodward Kempen Gmbh Windenergieanlage aufweisend eine elektrische Schaltanlage
DE102017102807B9 (de) * 2017-02-13 2020-11-19 Woodward Kempen Gmbh Windenergieanlage aufweisend eine elektrische Schaltanlage

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