WO2019007503A1 - Convertisseur de puissance - Google Patents

Convertisseur de puissance Download PDF

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Publication number
WO2019007503A1
WO2019007503A1 PCT/EP2017/066809 EP2017066809W WO2019007503A1 WO 2019007503 A1 WO2019007503 A1 WO 2019007503A1 EP 2017066809 W EP2017066809 W EP 2017066809W WO 2019007503 A1 WO2019007503 A1 WO 2019007503A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase module
power converter
voltage
module branch
switching device
Prior art date
Application number
PCT/EP2017/066809
Other languages
German (de)
English (en)
Inventor
Volker Hussennether
Adnan CHAUDHRY
Herbert Gambach
Roland Schuster
Thomas Westerweller
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
Priority to EP17735529.4A priority Critical patent/EP3622618A1/fr
Priority to PCT/EP2017/066809 priority patent/WO2019007503A1/fr
Publication of WO2019007503A1 publication Critical patent/WO2019007503A1/fr

Links

Classifications

    • 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
    • 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
    • H02H7/125—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 rectifiers
    • H02H7/1257—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 rectifiers responsive to short circuit or wrong polarity in output circuit
    • 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
    • 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
    • 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
    • H02H7/1216—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 AC-AC converters

Definitions

  • the invention relates to a power converter having at least one phase module which is connected between a first
  • DC voltage connection of the power converter is arranged and which has a plurality of modules, wherein the
  • Phase module has a first phase module branch, which is connected to the first DC voltage terminal, and has a second phase module branch, which is connected to the second
  • DC voltage connection is connected, wherein the modules each have at least two electronic switching elements and an electrical energy storage, and wherein the
  • Converter additionally has a switching device for switching off a current in case of failure.
  • the invention relates to a method for switching off
  • a power converter is a power electronic circuit for converting electrical energy.
  • Inverters can be converted, for example, alternating current into direct current or direct current into alternating current.
  • a multilevel power converter also called modular
  • Multilevelstromrichter has a plurality of similar modules, which are electrically connected in series.
  • the electrical series connection of the modules can achieve high output voltages.
  • a multilevel converter is simply different
  • High voltage range can be used, for example, as a power converter in a high-voltage DC transmission system or as
  • Such a power converter is from the European
  • Patent application EP 2 999 105 AI known. In this
  • Power converter is arranged in the first phase module branch and in the second phase module branch in each case a turn-off device for bidirectionally switching off the current in the event of a short circuit.
  • Each of the turn-off devices has antiparallel-connected thyristors. So per phase module so two defrosting devices are necessary to turn off the power in case of short circuit can. The two
  • the invention has for its object to provide a power converter and a method by which fault currents can be switched off in a cost effective manner.
  • a power converter with at least one
  • Phase module which between a first
  • DC voltage connection of the power converter is arranged and which has a plurality of modules, wherein the
  • Phase module has a first phase module branch, which is connected to the first DC voltage terminal, and has a second phase module branch, which is connected to the second
  • the modules each have at least two electronic switching elements and an electrical energy storage
  • the power converter additionally comprises a switching device for switching off a current in case of failure, wherein the
  • This power converter is special
  • This switching device is between the AC voltage connection of the power converter (the
  • the power converter may in particular be a multilevel power converter.
  • the power converter can be designed so that the
  • connection point between the first phase module branch and the second phase module branch of the AC voltage terminal disconnects.
  • Switching device in the on state, in which the energy is transferred from the AC voltage connection to the connection point and vice versa.
  • the switching device is switched to the off state, in which the flow of energy between the
  • the power converter may be configured such that the first phase module branch and the second phase module branch are each free of components of the switching device.
  • the first phase module branch and the second phase module branch are thus schalt wornsok.
  • the current flow within the phase module advantageously does not become
  • the first phase module branch and the second phase module branch are in an electrical
  • the power converter may be configured such that the first phase module branch and the second phase module branch each have at least two of the modules, in particular in each case at least five of the modules, in a series connection.
  • the power converter can also have many more modules, for example, fifty, one hundred or several hundred modules per phase module branch.
  • the power converter can be designed so that the two electronic switching elements (and the energy storage) are arranged in a half-bridge circuit.
  • Such modules are also referred to as half-bridge modules.
  • Half-bridge modules have only two electronic switching elements. As a result, half-bridge modules can be produced particularly cost-effectively. In addition, need
  • Half-bridge modules only a relatively small amount of space. This is offset by the disadvantage that only voltages with one polarity can be generated by means of half-bridge modules. Therefore, converters with half-bridge modules are usually not able to
  • the power converter can be designed so that at least one of the modules in addition to the two electronic
  • Switching elements two other electronic switching elements wherein the two electronic switching elements and the two further electronic switching elements are arranged in a full-bridge circuit.
  • the power converter in addition to the half-bridge modules on at least one full bridge module.
  • this full bridge module is more expensive and requires more space (space), but creates the possibility of generating a voltage with arbitrary polarities. As a result, the power converter can be used more versatile.
  • the power converter can be designed so that the
  • Such a power electronic switching device is usually maintenance-free and advantageously switches very fast.
  • the power converter can be designed so that the
  • Switching device has thyristors.
  • the power converter can be designed so that the switching device has antiparallel connected thyristors.
  • thyristors in particular by means of antiparallel-connected thyristors, the disconnection of fault currents can advantageously be carried out particularly quickly.
  • Short-circuit currents in a power converter with at least one phase module, which between a first
  • DC voltage connection of the power converter is arranged and which has a plurality of modules, wherein the Phase module has a first phase module branch, which is connected to the first DC voltage terminal, and has a second phase module branch, which is connected to the second
  • DC voltage connection is connected, wherein the modules each have at least two electronic switching elements and an electrical energy storage, wherein in the method
  • the procedure can also be such that
  • Phase module is separated by means of a switching device, in particular by means of a power electronic
  • Phase module only a single switching device needed.
  • the method can proceed such that the switching device has thyristors.
  • the procedure can also be such that the
  • Switching device has anti-parallel connected thyristors.
  • the procedure can also be such that the first
  • Phase module branch and the second phase module branch is respectively free of components of the switching device.
  • Phase module branch and the second phase module branch are thus schalt pleasedskay.
  • the power converter and the method have the same
  • Figure 1 shows an embodiment of a power converter in
  • FIG. 1 shows an alternative representation of the power converter according to Figure 1, in
  • Figure 3 shows an embodiment of a module of
  • FIG. 4 shows a further exemplary embodiment of a module of the power converter
  • FIG. 5 shows an embodiment of a high-voltage circuit.
  • Multilevelstromrichter 1 has a first
  • the first AC voltage terminal 5 is electrically connected to a first connection point 21 between a first one by means of a first switching device 17
  • the first connection point 21 is the
  • the first phase ⁇ modulzweig 25 and the second phase module branch 29 form first phase module 33 of the power converter 1.
  • Phase module branch 25 is electrically connected to a first DC ⁇ connection 37; that the first
  • Phase module branch 29 is connected to a second
  • the first DC voltage terminal 37 is a positive one
  • the second DC voltage terminal 41 is a negative DC voltage terminal.
  • AC voltage terminal 9 and the third AC voltage ⁇ terminal 13 are 3 phase voltages U ac i, U aC 2 and U aC 3 of a three-phase AC voltage U ac . More precisely, the 3 phase voltages U ac i, U aC 2 and U aC 3 of the three-phase AC voltage U ac are applied between the respective AC voltage connection 5, 9 or 13 and a ground connection 43. For example, between the first
  • the second AC voltage terminal 9 is electrically connected by means of a second switching device 45 to a second connection point 49 between a third phase module branch 53 and a fourth phase module branch 57.
  • the second connection point 49 is the junction between the third phase module branch 53 and the fourth Phase module branch 57.
  • the third phase module branch 53 and the fourth phase module branch 57 form a second phase module 61.
  • the third AC voltage terminal 13 is electrically connected to a third connection point 69 between a fifth phase module branch 73 and a sixth phase module branch 77 by means of a third switching device 65.
  • the third connection point 69 is the junction between the fifth phase module branch 73 and the sixth
  • Phase module branch 77 The fifth phase module branch 73 and the sixth phase module branch 77 form a third phase module 81.
  • connection point 49 facing away from the end of the third phase module branch 53 and the third
  • Phasenmodulzweigs 73 are electrically connected to the first DC voltage ⁇ connection 37.
  • Connection point 49 remote from the end of the fourth phase module branch 57 and the third connection point 69 remote from the end of the sixth phase module branch 77 are electrically connected to the second DC voltage terminal 41.
  • the first phase module branch 25, the third phase module branch 53 and the fifth phase module branch 73 form a positive-side converter part 85; the second phase module branch 29, the fourth phase module branch 57 and the sixth phase module branch 77 form a negative-side converter element 89.
  • the first AC voltage terminal 5, the second AC voltage terminal 9 and the third AC voltage terminal 13 may be electrically connected to a
  • Each phase module branch has a plurality of modules, which are electrically connected (by means of its galvanic current connections) in series (1_1 ... l_ n; etc.; 2_1 ... 2_n). Such modules are also referred to as submodules. in the Embodiment of Figure 1, each phase module branch n modules. The number of means of their galvanic
  • Power connections electrically connected in series modules can be very different, at least two modules are connected in series, but it can also be, for example, 5, 50, 100 or more modules connected electrically in series.
  • n 36: the first phase module branch 25 thus has 36 modules 1_1, 1_2, 1_3,... 1_36.
  • the other phase module branches 29, 53, 57, 73 and 77 are of similar construction.
  • the first switching device 17 has, as switching elements, a first thyristor T1 and a second thyristor T2.
  • the first thyristor Tl and a second thyristor T2 are connected in anti-parallel. Therefore, by means of the first
  • the second switching device 45 has, as switching elements, a third thyristor T3 and an antiparallel-connected fourth thyristor T4.
  • the third switching device 65 has, as switching elements, a fifth thyristor T5 and an antiparallel-connected sixth thyristor T6.
  • the representation with individual thyristors Tl to T6 is here only symbolically
  • thyristors may be connected in series and / or in parallel to provide the required voltage and current values
  • Power converter 1 are optical messages or optical signals via an optical communication link (for example via an optical waveguide) to the individual
  • the switching devices 17, 45 and 65 are identical to the switching devices 17, 45 and 65.
  • the switching devices 17, 45 and 65 can be particularly advantageous for the occurrence of a fault
  • AC voltage terminal 5 electrically separated from its associated first connection point 21.
  • the second AC voltage terminal 9 is electrically disconnected from the associated second connection point 49 and / or the third AC voltage terminal 13 is electrically disconnected from the associated third connection point 69.
  • Interruption / separation can be very fast.
  • the opening of the switching devices can be done simply by the drive signals for the thyristors are turned off, whereupon the thyristors go to the next zero crossing of the AC voltage in its blocking position.
  • the alternating current can be switched off very quickly.
  • the switching devices 17, 45 and 65 may in particular be components of the power converter 1.
  • the method for switching off fault currents proceeds in such a way that when an error occurs, in particular when a short circuit occurs, the AC voltage connection (s) affected by the fault are disconnected from the associated phase module or from the associated phase modules.
  • Phase module is effected by means of the associated switching device or by means of the associated switching devices.
  • Switching device switched off. Then lock the thyristors, so that the flowing alternating current quickly goes to zero. This electrical isolation between
  • the thyristors of the switching devices 17, 45 and 65 also have significantly lower forward losses (a smaller loss per device) compared to the modules with IGBT switching elements, higher reverse voltages (require a smaller number of series switching to achieve the same
  • the power converter 1 of Figure 1 is shown again in a simplified representation.
  • Phase module branch 77 symbolically represented in each case as a square with a drawn diagonal. The first
  • FIG. 3 shows an exemplary embodiment of a module 300 of the power converter 1. It can be
  • the module 300 is configured as a half-bridge module 300.
  • Module 300 includes a first (turn-off) electronic switching element 302 (first turn-off semiconductor valve 302) having a first antiparallel diode 304.
  • the module 300 has a second (deactivatable) electronic switching element 306 (second deactivatable
  • Energy storage 310 in the form of a capacitor 310.
  • Electronic switching elements 306 are each as an IGBT
  • the first electronic switching element 302 is electrically connected in series with the second electronic switching element 306. At the connection point between the two electronic
  • Switching elements 302 and 306 is a first galvanic
  • Module connection 312 arranged.
  • a second galvanic module connection 315 is arranged.
  • the second module connection 315 is furthermore electrically connected to a first connection of the energy store 310; a second connection of the
  • Energy storage 310 is electrically connected to the
  • the energy storage 310 is thus electrically parallel
  • Power converter can be achieved that between the first module connection 312 and the second module connection 315th
  • Modules of the individual phase module branches can be generated in each case the desired output voltage of the converter.
  • FIG. 4 shows a further exemplary embodiment of a module 400 of the power converter 1. This may be, for example, one of the modules 1_1... 6_n shown in FIG. In addition to the already known from Figure 3 first electronic switching element 302, second
  • Switching element 406 with a fourth anti-parallel connected freewheeling diode 408 on.
  • the third electronic switching element 402 and the fourth electronic switching element 406 are each configured as an IGBT.
  • the second module connection 415 is not electrically connected to the second electronic switching element 306, but instead has a center point of an electrical series connection of the third electronic switching element 402 and the fourth electronic switching element 406.
  • the module 400 of FIG. 4 is a so-called full-bridge module 400.
  • This full-bridge module 400 is characterized in that, with appropriate control of the four
  • the multilevel converter 1 can either have only half-bridge modules 300, only full-bridge modules 400 or also half-bridge modules 300 and full-bridge modules 400.
  • FIG. 5 schematically shows an exemplary embodiment of a high-voltage direct-current transmission system 500.
  • This high-voltage direct-current transmission system 500 has two power converters 1, as shown in FIG. 1 or 2
  • the two positive DC voltage terminals 37 are the
  • FIG. 5 shows by way of example a high-voltage direct-current transmission system designed as a symmetrical monopole. But of course he can
  • Inverters can also be used in other high-voltage direct-current transmission systems, for example in bipolar systems.
  • the described power converter and the described method can be used for a wide variety of plant types
  • a power converter and a method for switching off fault currents in a power converter have been described in which a fault can easily and inexpensively be made when an error occurs.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un convertisseur de puissance (1) comportant au moins un module de phase (33) disposé entre une première borne de tension continue (37) et une deuxième borne de tension continue (41) du convertisseur de puissance et comportant une pluralité de modules (1_1…2_n). Selon l'invention, le module de phase (33) comporte une première branche de module de phase (25) qui est connectée à la première borne de tension continue (37) et une deuxième branche de module de phase (29) qui est connectée à la deuxième borne de tension continue (41). Les modules (1_1…2_n) comportent chacun au moins deux éléments de commutation électroniques (302, 306) et un accumulateur d'énergie électrique (310). Le convertisseur de puissance comporte en outre un dispositif de commutation (17) destiné à couper le courant en cas de dysfonctionnement. Selon l'invention, le dispositif de commutation (17) est disposé entre une borne de tension alternative (5) du convertisseur de puissance et un point de connexion (21) entre la première branche de module de phase (25) et la deuxième branche de module de phase (29).
PCT/EP2017/066809 2017-07-05 2017-07-05 Convertisseur de puissance WO2019007503A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17735529.4A EP3622618A1 (fr) 2017-07-05 2017-07-05 Convertisseur de puissance
PCT/EP2017/066809 WO2019007503A1 (fr) 2017-07-05 2017-07-05 Convertisseur de puissance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/066809 WO2019007503A1 (fr) 2017-07-05 2017-07-05 Convertisseur de puissance

Publications (1)

Publication Number Publication Date
WO2019007503A1 true WO2019007503A1 (fr) 2019-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/066809 WO2019007503A1 (fr) 2017-07-05 2017-07-05 Convertisseur de puissance

Country Status (2)

Country Link
EP (1) EP3622618A1 (fr)
WO (1) WO2019007503A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11342862B2 (en) 2018-12-18 2022-05-24 Siemens Energy Global GmbH & Co. KG Operating a multilevel converter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6236179B1 (en) * 2000-02-21 2001-05-22 Lockheed Martin Energy Research Corporation Constant power speed range extension of surface mounted PM motors
US20100085785A1 (en) * 2007-03-13 2010-04-08 Siemens Aktiengesellschaft Method For Limiting Damage To A Converter Having Power Semiconductors In The Case Of A Short Circuit In The DC Voltage Intermediate Circuit
CN105141153A (zh) * 2015-08-13 2015-12-09 厦门科华恒盛股份有限公司 一种三相整流升压电路及其控制方法以及不间断电源
WO2016037666A1 (fr) * 2014-09-12 2016-03-17 Abb Technology Ltd Convertisseur de source de tension et procédé associé
EP2999105A1 (fr) 2014-09-17 2016-03-23 Alstom Technology Ltd Convertisseur hybride modulaire multi-cellule avec thyristeurs bidirectionels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6236179B1 (en) * 2000-02-21 2001-05-22 Lockheed Martin Energy Research Corporation Constant power speed range extension of surface mounted PM motors
US20100085785A1 (en) * 2007-03-13 2010-04-08 Siemens Aktiengesellschaft Method For Limiting Damage To A Converter Having Power Semiconductors In The Case Of A Short Circuit In The DC Voltage Intermediate Circuit
WO2016037666A1 (fr) * 2014-09-12 2016-03-17 Abb Technology Ltd Convertisseur de source de tension et procédé associé
EP2999105A1 (fr) 2014-09-17 2016-03-23 Alstom Technology Ltd Convertisseur hybride modulaire multi-cellule avec thyristeurs bidirectionels
CN105141153A (zh) * 2015-08-13 2015-12-09 厦门科华恒盛股份有限公司 一种三相整流升压电路及其控制方法以及不间断电源

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11342862B2 (en) 2018-12-18 2022-05-24 Siemens Energy Global GmbH & Co. KG Operating a multilevel converter

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