WO2014127829A1 - Prélèvement en série avec unité de précharge - Google Patents

Prélèvement en série avec unité de précharge Download PDF

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Publication number
WO2014127829A1
WO2014127829A1 PCT/EP2013/053592 EP2013053592W WO2014127829A1 WO 2014127829 A1 WO2014127829 A1 WO 2014127829A1 EP 2013053592 W EP2013053592 W EP 2013053592W WO 2014127829 A1 WO2014127829 A1 WO 2014127829A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
connection
submodules
pole
precharging
Prior art date
Application number
PCT/EP2013/053592
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Knaak
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 PCT/EP2013/053592 priority Critical patent/WO2014127829A1/fr
Priority to BR112015019684A priority patent/BR112015019684A2/pt
Publication of WO2014127829A1 publication Critical patent/WO2014127829A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • 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
    • H02M1/36—Means for starting or stopping converters
    • 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
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/14—Balancing the load in a network
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/0093—Converters characterised by their input or output configuration wherein the output is created by adding a regulated voltage to or subtracting it from an unregulated input
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Definitions

  • the invention relates to a device for exchanging electrical power with a pole of a direct current network with two terminals for serial connection to the pole and with at least one converter having at its DC voltage connection interconnected phase modules, each having an AC voltage terminal and form a series circuit of bipolar submodules.
  • Such a device is already known from WO 2010/115453 Al.
  • longitudinal voltage sources into DC transmission lines in order to keep the voltage in the DC voltage network within a permissible range everywhere.
  • the longitudinal voltage sources By inserting the longitudinal voltage sources the DC system energy is supplied or removed. Extracted energy is fed into a three-phase network, to which the longitudinal voltage source is connected.
  • a longitudinal voltage source for example, a converter is considered, which is inserted serially into the DC transmission line and is connected on the AC voltage side to the AC voltage network.
  • the services taken are on the order of 10% of the services transmitted by the network.
  • the parallel tap also has at least one inverter. If the converter of a series or parallel tap is connected to an alternating voltage network on the alternating voltage side, its energy store can be charged via the converter transformer and a precharge resistor per alternating voltage phase before the converter is put into operation. This is for example from the field of High-voltage direct current transmission known. However, if an active alternating voltage network is missing, this procedure is no longer possible.
  • the object of the invention is therefore to provide a device of the type mentioned, which can be put into operation independently of an AC voltage network and cost.
  • the invention achieves this object by virtue of the fact that each submodule is equipped with a power semiconductor circuit and an energy store and means are provided for precharging the submodules, which makes it possible to charge the energy stores independently of the connection of the AC voltage terminals.
  • At least one so-called modular multi-stage converter is proposed as part of a device for exchanging electrical power with a direct-current network, the device moreover comprising means for
  • the submodules are designed as full bridge circuits or half bridge circuits.
  • the power semiconductor circuit comprises a series circuit of two power semiconductor switches, which are both switched on and off.
  • Such power semiconductor switches are, for example, IGBTs, GTOs, IGCTs or the like. Each of these power semiconductor switch is a freewheeling diode connected in opposite directions in parallel.
  • the series connection of the two switched on and off power semiconductor switch is connected in parallel to the energy storage, wherein in the half-bridge circuit a submodule connection terminal connected directly to one pole of the energy storage and the other submodule connection terminal is connected to the potential point between the power semiconductor switches.
  • the full bridge circuit has a total of four power semiconductor switches in the form of two series circuits each comprising two power semiconductor switches which can be switched on and off.
  • the two series circuits are each connected in parallel to the energy store, wherein the first submodule connection terminal is connected to the potential point between the power semiconductor switches of the first series circuit and the second submodule connection terminal is connected to the potential point between the power semiconductor switches of the second series circuit.
  • the means for precharging the submodules comprise a precharging branch in which a mechanical switch and a resistor are arranged in series connection.
  • the mechanical switch is closed so that a
  • Pre-charging the multi-stage converter is made possible by means of the current flowing through the resistor current.
  • the resistor has a capacitance and / or an inductance connected in series.
  • capacitance is to be understood here as meaning any capacitive component, such as a capacitor or the like, for example.
  • the term “inductance” encompasses any inductive component, that is to say, for example, a coil, choke or the like.
  • the inductance may be at least part of a winding of a transformer connected to the AC terminal of one of the inverters.
  • the Vorladezweig bypasses the converter or the.
  • a bridging branch bridging the pre-charging branch is expedient, in which a second mechanical switch is arranged, wherein each terminal can be connected to the pole via a mechanical switch.
  • the procedure for commissioning the inverter as follows. It is assumed here that the mechanical switch in the bridging branch is closed. In this switch position, the device according to the invention is bridged. With suitable control of the mechanical switch, the current commutates in the Vorladezweig. A current flows through the resistor arranged in the precharge branch, as a result of which the energy stores of the submodules can be charged. If the multistage converter is or is ready for operation, it can be used with a suitable topology to open the mechanical switch in the pre-charging branch virtually without current.
  • a voltage is generated by means of the device according to the invention, which generates in the loop formed from the device and the Vorladezweig a voltage which drives a circulating current, which is opposite to the operating current in the mechanical switch.
  • the switch can open normally so that an arc in the switch is extinguished. Subsequently, the normal operation of the device according to the invention can take place.
  • each AC voltage terminal is connected to a phase of an AC voltage network.
  • the precharging branch connects one of the connection terminals to the ground potential or to an oppositely polarized pole of the direct voltage network.
  • two inverters are connected in series. The two inverters connected in series can again have submodules with full or half-bridge switching. However, half-bridge circuits are preferably provided.
  • the precharging branch is connected to a potential point between the inverters on the one hand and the ground potential or to the oppositely polarized pole of the direct current power grid on the other hand.
  • the invention also relates to a method for precharging a device for exchanging electrical power with a pole of the direct voltage network.
  • the device again comprises two terminals for serial connection to the pole and at least one converter with phase modules each extending between two common DC terminals and each having an AC terminal, the phase modules forming a series arrangement of two-pole submodules, each of which a power semiconductor circuit and an energy storage and wherein means for precharging the submodules are provided.
  • the method comprises the steps of charging the energy stores of the submodules via the means for precharging the submodules.
  • the device can record its normal operation and, for example, set up an alternating-voltage side with its AC voltage network connected to it.
  • an AC voltage network connected to the AC voltage connection is established.
  • FIG 2 shows a device according to Figure 1 in detail
  • FIG. 3 shows an embodiment of the device according to the invention deviating from FIG. 2,
  • FIG. 4 shows another embodiment of the device according to the invention.
  • FIG. 1 shows a first exemplary embodiment of the device 1 according to the invention, which has two connection terminals 2 and 3 for connection to a pole 4 of a direct voltage network 5.
  • the DC voltage network 5 comprises, in addition to the already mentioned positively polarized pole 4, a negative pole 6. However, the other pole could also be at ground potential.
  • a bridging branch 7 is provided, in which a mechanical switch 8 is arranged. For connecting the terminals 2 and 3 to the pole 4, the mechanical switches 9 and 10 are provided. If the mechanical switch 8 is closed, the device 1 is bridged.
  • the device 1 further comprises a converter 11 with two DC voltage connections, not shown in the figures, which are each connected here to a connection terminal 2 or 3.
  • the inverter 11 forms an AC voltage terminal which is connected to a three-phase AC voltage network 12.
  • a mechanical disconnect switch 13 is provided in order to disconnect the alternating voltage network 12 from the converter 11, a mechanical disconnect switch 13 is provided.
  • means 14 are provided for precharging not shown submodules of the inverter 11.
  • the means 14 for precharging the submodules comprise a precharging branch 15, which on the one hand is connected to the Device 1 and on the other hand connected to the negative pole 6 of the DC power network 5.
  • a mechanical switch 16 and an ohmic resistor 17 are arranged in series.
  • FIG. 2 shows the device 1 according to FIG. In particular, the structure of the inverter 11 is shown in more detail.
  • the inverter 11 has three phase modules 18, 19 and 20, each extending between two common DC voltage terminals 21 and 22. Each phase module further forms an AC voltage terminal 23, which is connected to a phase of said alternating voltage network, which is not figuratively shown in Figure 2.
  • the AC-side terminal of the inverter 11 to the AC voltage network via an inverter transformer 24 having a primary winding 25 which is galvanically connected to the AC voltage terminal 23 of the inverter 11.
  • a secondary winding 26 is galvanically connected to the AC mains.
  • phase module branches 27 Between an AC voltage terminal 23 and each DC voltage terminal 21 and 22 extend phase module branches 27, which are connected to a six-pulse or Graetz bridge with each other.
  • the phase module branches 27 comprise a series connection of bipolar submodules 28, which are all constructed identically here, and of which only one is shown in more detail in FIG. However, the identical design of the submodules is not absolutely necessary within the scope of the invention.
  • the topology of submodules can vary. It can be seen in FIG. 2 that all submodules 28 are of bipolar design and have a first submodule connection terminal and a second submodule connection terminal.
  • each submodule 28 has an energy store 31, which has a first series connection of two IGBTs 32 as a power semiconductor switch and a second series circuit of two IGBTs 32 are connected in parallel.
  • Each IGBT 32 has a freewheeling diode connected in parallel in opposite directions.
  • the first submodule connection terminal is connected to the potential point between the IGBTs 32 of the first series circuit and the second submodule connection terminal to the potential point between the IGBTs of the second series circuit.
  • each submodule 28 thus has four power semiconductor switches 32 which can be switched on and off, and forms a full bridge circuit together with the energy store 31 designed as a capacitor.
  • the condenser voltage dropping across the capacitor 31, a zero voltage or the inverse capacitor voltage can be generated at the two submodule connection terminals.
  • the commissioning of the device 1 according to FIG. 2 is described below, it being assumed that the AC voltage network 12 is a so-called off-grid without its own energy source.
  • the alternating voltage network 12 is not constructed before the device 1 is put into operation. There is therefore no AC voltage.
  • the switch 8 of the bridging branch 7 is closed, whereas the mechanical switches 9 and 10 are opened.
  • the device 1 is completely bridged.
  • the mechanical switches 9 and 16 are closed, so that a direct current flows through the converter 11 and the pre-charge branch 15, which charges the energy stores 31 of the sub-modules.
  • the switch 10 can be closed. Subsequently, the switch 8 is opened in the bridging branch 7, whereby a voltage is generated at the connection terminals 2, 3 of the device 1, which extinguishes the arc drawn by the contacts of the mechanical switch 8.
  • the AC voltage in the AC voltage network 12 can be established.
  • the device 1 can be controlled to the DC voltage required for the desired power exchange with the connected AC power supply 12.
  • Figure 2 is indicated by the terminals C and D of the transformer 24 that a portion of the primary winding 25 of the transformer 24 can be used as an inductance, if this is useful for the pre-charging of the device 1.
  • a part of the primary winding 25 can be connected in series as an inductance to the ohmic resistor 17 by connection to the precharging branch 15, so that this part is the means 14 for precharging the submodules.
  • FIG. 3 shows a modified exemplary embodiment of the device 1 according to the invention, which differs from the exemplary embodiment shown in FIG. 2 in that the submodules 28 of the converter 11 do not form a full bridge circuit but a half bridge circuit.
  • the submodules 28 accordingly comprise only a series arrangement of two IGBTs, one of the submodule connection terminals being connected to one pole of the energy store and the other submodule connection terminal being connected to the potential point between the IGBTs of the series connection.
  • FIG. 4 shows a further exemplary embodiment of the device 1 according to the invention, which, in contrast to the exemplary embodiment shown in FIG. 3, has a second converter 34 in addition to a first converter 11, which converter is constructed identically to the first converter 11.
  • the second converter 34 also has phase modules 18, 19 and 20 which each have two common DC voltage terminals 21 and 22 and one AC voltage terminal 23 each.
  • the AC voltage terminal 23 of each phase module 18, 19, 20 of the second converter 34 is connected via a second transformer 35 to a second separate AC voltage network, which is not shown figuratively. Deviating from this, both transformers 24, 35 are connected to the same alternating voltage network.
  • the precharging branch 15 in this embodiment of the invention is connected to the potential point between the inverters 11 and 34 and on the other hand to the negative pole 6 of the DC voltage network 5. In this way, the submodules 28 of both converters 11, 34, that is to say the energy stores 31 of the submodules 28 of both converters 11 and 34, can be charged.
  • the inverter (s) are connected to an AC power supply that has its own energy source, the
  • Inverter 11 or the inverters 11 and 34 can be charged via the resistor 30, which is shown in Figures 2 to 4.
  • the switch 13 is opened and the switch 29 is closed.
  • Figure 5 shows a further embodiment of the device according to the invention, with a first inverter 11, which is again designed as a modular multi-stage converter with half-bridges according to Figure 3.
  • the means 14 for precharging the submodules 28 again comprise a precharging branch 15, in which a mechanical switch 16 and an ohmic resistor 17 are arranged.
  • the precharging branch 15 bridges the converter 11.
  • the precharging branch 15 is again bridged by the bridging branch 7, in which a mechanical switch 8 is arranged.
  • the terminals 2 and 3 of the device 1 are again connected via separate switches 9 and 10 to the pole 4 of the DC voltage network 5.
  • the mechanical switch 8 in the bridging branch 7 is connected in parallel with a classic extinguishing circuit 37, which forms a resonant circuit.
  • Oscillating circuit can be imparted to the current flowing through the switch a vibration and thus a current zero crossing can be generated.
  • the mechanical switch 8 can be opened without current.
  • the precharging of the submodules 28 of the converter 11 according to FIG. 5 is carried out as follows. If the device 1 is not in operation, the switch 8 of the bridging branch 7 is closed. concluded. To start up the device 1, the switch 16 is closed and the switch 8 is opened. The main current commutates in the Vorladezweig 15 and flows through the resistor 17, with the aid of the resonant circuit 37, the switch 8 can be opened while avoiding an arc. Thus, a voltage drops at the resistor 17 which drives a current with which the energy stores 31 of the submodules 28 of the converter 11 can be charged.
  • a voltage can be generated at the output at the connection terminals 2 and 3 which generates a circulating current in the loop formed by the precharging branch 15 and the converter 11, which is opposite to the current flowing in the switch 8 that with equal amplitudes of the mechanical switch 37 can be opened almost without power. Subsequently, the desired power can be taken from the pole of the DC voltage network 5 and fed into the connected AC voltage network 12.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne un prélèvement en série avec unité de précharge. L'invention vise à créer un dispositif (1) servant à l'échange de puissances électriques avec un pôle (4) d'un réseau à tension continue (5), comportant deux bornes de branchement (2, 3) pour le branchement en série dans le pôle (8), et au moins un convertisseur (11) qui comporte à leur branchement en courant continu des modules de phase (18, 19, 20) reliés l'un à l'autre, qui disposent respectivement d'un branchement en courant continu (23) et comprennent un montage en série en sous-modules bipolaires (28), dispositif qui peut être mis en service en l'absence d'un réseau de courant alternatif et pour un coût avantageux. A cet effet, chaque sous-module (28) est équipé d'un circuit à semi-conducteurs de puissance et d'un accumulateur d'énergie (31), et des moyens (14) sont prévus pour pré-charger les sous-modules (28), qui permettent une charge des accumulateurs d'énergie (31) indépendamment du raccordement des branchements au courant alternatif (23).
PCT/EP2013/053592 2013-02-22 2013-02-22 Prélèvement en série avec unité de précharge WO2014127829A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2013/053592 WO2014127829A1 (fr) 2013-02-22 2013-02-22 Prélèvement en série avec unité de précharge
BR112015019684A BR112015019684A2 (pt) 2013-02-22 2013-02-22 aparelho para troca de potência elétrica e método para pré-carregamento de um aparelho para troca de potência elétrica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/053592 WO2014127829A1 (fr) 2013-02-22 2013-02-22 Prélèvement en série avec unité de précharge

Publications (1)

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WO2014127829A1 true WO2014127829A1 (fr) 2014-08-28

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WO (1) WO2014127829A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017101963A1 (fr) * 2015-12-14 2017-06-22 Siemens Aktiengesellschaft Dispositif et procédé pour commander un flux de charge dans un réseau à tension alternative
WO2019024972A1 (fr) * 2017-07-31 2019-02-07 Siemens Aktiengesellschaft Ensemble convertisseur de puissance présentant une capacité de coupure d'un courant de fuite et procédé pour la coupure d'un courant de fuite pour ledit ensemble convertisseur de puissance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103031A1 (de) * 2001-01-24 2002-07-25 Rainer Marquardt Stromrichterschaltungen mit verteilten Energiespeichern
DE102008036811A1 (de) * 2008-08-07 2010-02-18 Siemens Aktiengesellschaft Redundanzsteuerverfahren eines mehrphasigen Stromrichters mit verteilten Energiespeichern
WO2010115453A1 (fr) 2009-04-06 2010-10-14 Abb Technology Ag Compensation de tension cc dans un réseau de distribution cc à haute tension à plusieurs terminaux
DE102009033515A1 (de) * 2009-07-15 2011-01-20 Siemens Aktiengesellschaft Statischer Umformer und Verfahren zum Anfahren des Umformers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103031A1 (de) * 2001-01-24 2002-07-25 Rainer Marquardt Stromrichterschaltungen mit verteilten Energiespeichern
DE102008036811A1 (de) * 2008-08-07 2010-02-18 Siemens Aktiengesellschaft Redundanzsteuerverfahren eines mehrphasigen Stromrichters mit verteilten Energiespeichern
WO2010115453A1 (fr) 2009-04-06 2010-10-14 Abb Technology Ag Compensation de tension cc dans un réseau de distribution cc à haute tension à plusieurs terminaux
DE102009033515A1 (de) * 2009-07-15 2011-01-20 Siemens Aktiengesellschaft Statischer Umformer und Verfahren zum Anfahren des Umformers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANANDARUP DAS ET AL: "A method for charging and discharging capacitors in Modular Multilevel Converter", IECON 2011 - 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY, IEEE, 7 November 2011 (2011-11-07), pages 1058 - 1062, XP032104629, ISBN: 978-1-61284-969-0, DOI: 10.1109/IECON.2011.6119454 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017101963A1 (fr) * 2015-12-14 2017-06-22 Siemens Aktiengesellschaft Dispositif et procédé pour commander un flux de charge dans un réseau à tension alternative
US10468884B2 (en) 2015-12-14 2019-11-05 Siemens Aktiengesellschaft Device and method for controlling a load flow in an alternating-voltage network
WO2019024972A1 (fr) * 2017-07-31 2019-02-07 Siemens Aktiengesellschaft Ensemble convertisseur de puissance présentant une capacité de coupure d'un courant de fuite et procédé pour la coupure d'un courant de fuite pour ledit ensemble convertisseur de puissance
US11289996B2 (en) 2017-07-31 2022-03-29 Siemens Energy Global GmbH & Co. KG Converter assembly with an ability to disconnect a fault current and a method for disconnecting a fault current at a converter assembly of this type

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