EP3791466A1 - Convertisseur multipoint modulaire doté d'unités d'accumulation modulaires - Google Patents

Convertisseur multipoint modulaire doté d'unités d'accumulation modulaires

Info

Publication number
EP3791466A1
EP3791466A1 EP18740149.2A EP18740149A EP3791466A1 EP 3791466 A1 EP3791466 A1 EP 3791466A1 EP 18740149 A EP18740149 A EP 18740149A EP 3791466 A1 EP3791466 A1 EP 3791466A1
Authority
EP
European Patent Office
Prior art keywords
converter
energy storage
voltage
modules
arrangement
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP18740149.2A
Other languages
German (de)
English (en)
Inventor
Hubert Rubenbauer
German KUHN
Oliver Kuhn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP3791466A1 publication Critical patent/EP3791466A1/fr
Pending legal-status Critical Current

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
    • 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
    • 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
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
    • H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load 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
    • 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
    • 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
    • H02M7/49—Combination of the output voltage waveforms of a plurality of 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/20—Active power filtering [APF]

Definitions

  • the invention relates to a converter arrangement with a converter with a plurality of converter valves, each having a plurality of semiconductor switches, and with an energy storage branch which is arranged in parallel with at least one of the converter valves.
  • a concept for using active energy-storing energy stores in cooperation with modular multi-stage converters is known from the international patent application with the file number PCT / EP2018 / 051556.
  • a storage arrangement is provided on the DC side of the modular multi-stage converter, which is arranged in the so-called double star topology and is connected on the AC side to an AC voltage network.
  • the storage arrangement comprises a plurality of series connections of energy storage elements connected in parallel.
  • the modular multi-stage converter described there comprises converter valves, each with a series connection of switching modules.
  • the converter valves can, for example, be connected to one another in a delta or star point circuit and connected to an AC voltage network.
  • On the switch modules are each connected to the switch module's own memory modules.
  • the object of the invention is a proper
  • the energy storage branch comprises voltage converter modules and energy storage modules assigned to them, the voltage converter modules being connected on the input side in the series circuit to one another and on the output side to the respectively assigned energy storage module.
  • the energy storage branch accordingly extends in parallel to the at least one converter valve.
  • the converter valves can extend, for example in a delta circuit, in each case between two AC voltage connections of the converter for connection to an AC voltage network.
  • the converter extends between a first and a second DC voltage pole, the energy storage branch also extending parallel to the converter between the two DC voltage poles.
  • the converter has at least one phase branch, the phase branch extending between the first and the second direct voltage pole and comprising an alternating voltage connection for connecting to a phase line of an alternating voltage network and a first and a second converter valve, a first
  • Converter valve between the first DC voltage pole and the AC voltage connection and a second converter valve between the AC voltage connection is arranged around the second DC voltage pole.
  • the energy storage branch extends here on the DC side of the converter between the DC poles.
  • An example of such configurations is the stabilization of the AC network.
  • the converter has a first and as a DC-DC converter a second DC voltage side, wherein the energy storage branch extends parallel to one of the DC voltage sides. This is conceivable, for example, when connecting PV modules to a DC circuit.
  • the energy storage branch accordingly extends to the
  • the converter is generally a popular converter which, in its multiphase configuration, that is to say with a plurality of phase branches between the DC voltage poles, forms a double star arrangement.
  • the energy storage branch can only be connected indirectly to the AC voltage network via the converter, and thus does not include its own AC voltage connection for connecting to the AC voltage network.
  • Each voltage converter module is inserted on the input side into the series circuit and connected on the output side to the energy storage module assigned to it.
  • Each of the voltage converter modules corresponds to one DC / DC converter.
  • the voltage converter module is set up to convert an input-side voltage into an output-side voltage at the associated energy storage module, or vice versa.
  • An advantage of the invention compared to the memory modules integrated in switching modules of the converter is that the energy storage branch can be easily and flexibly connected to different converter systems without the converter having to be specially adapted.
  • the energy storage branch can therefore have a design and an independent control that are independent of the converter.
  • Another advantage is that the energy storage branch is separated or decoupled from the AC voltage side of the converter, if the converter is connected to an AC voltage network. In this way, the energy storage branch is not directly affected in the event of faults on the alternating voltage side.
  • Another advantage of the invention is the connection of the individual energy storage modules via the
  • Converter arrangement can be used flexibly. In contrast, this flexibility would be severely limited in a series connection directly with each other connected energy storage, for example by different current carrying capacities of different types of energy storage.
  • An additional advantage of the invention is the simple maintenance of individual energy storage modules without the entire energy storage branch having to be taken out of operation.
  • the voltage converter module can be bridged on the input side or on the output side by means of a suitable bridging device, for example a bridging switch.
  • the converter arrangement can also comprise a plurality of energy storage branches, each of which is arranged parallel to one another between the DC voltage poles.
  • the energy storage branches can have a similar structure.
  • the energy storage modules can each comprise one or more energy stores. In the case of several energy stores, these can be connected to one another in an electrical parallel connection.
  • the converter arrangement preferably further comprises an independent control unit for regulating the energy consumption and energy withdrawal of the energy storage modules of the energy storage branch.
  • the control unit is, in particular, independent of the converter control, and accordingly allows its own control and regulation of the energy consumption and energy consumption of the energy storage modules.
  • the control unit in particular allows control of controllable switches of the voltage wall ler and energy storage modules that are independent of the converter control. So that is the flexibility of the whole
  • Converter arrangement further increased.
  • a control unit for regulating the voltage converter and energy storage modules of all energy storage branches can be provided, or each of the energy storage units can be assigned its own independent control unit.
  • Control unit can additionally be provided to coordinate the regulation unit and a converter regulation provided for regulating the converter.
  • the voltage converter modules are connected on the input side in the series circuit to one another and on the output side to the respectively assigned energy storage module. With this arrangement, the energy storage modules can be easily serviced or serviced in the event of a fault
  • Voltage converter modules each have at least four semiconductor switches that can be switched off and an intermediate circuit capacitor.
  • the DC link capacitor provides a DC link in the voltage converter module.
  • the semiconductor switches are suitably set up to connect the intermediate circuit capacitor on the input side of the
  • the energy storage module is expediently connected to the voltage converter in such a way that the energy storage module by means of one of the semiconductor switches of the
  • Voltage converter module can be bridged.
  • At least a first and a second semiconductor switch of the energy storage module are connected to the intermediate circuit capacitor in a half-bridge circuit.
  • the intermediate circuit capacitor is connected to the semiconductor switches in such a way that Conclusions, for example the inputs of the
  • Voltage converter module a voltage can be generated that speaks ent of the intermediate circuit capacitor voltage or a zero voltage.
  • the half-bridge circuit has the advantage of relatively low electrical losses in its operation.
  • a third semiconductor switch and a parallel circuit comprising a fourth semiconductor switch and the energy storage module are arranged in parallel with the intermediate circuit capacitor.
  • the energy storage module can thus be bridged by means of the fourth semiconductor switch.
  • Voltage converter module can be connected directly. This simplifies the structure of the modules. In addition, the connection can be used, for example, to ground the components together.
  • Voltage converter module and the energy storage module galvanically isolated.
  • the energy storage module can be connected to earth potential, so that no special protective measures with regard to higher voltage levels have to be taken.
  • the galvanic isolation can be provided, for example, inductively, in particular by means of a transformer.
  • An electrical connection between the voltage converter module and the energy storage module can expediently be disconnectable by means of at least one locking switch.
  • insulation coordination can also be achieved in a non-insulating version.
  • the at least one locking switch ter be opened so that there is an electrical interruption.
  • a grounding device is preferably provided for grounding the energy storage module.
  • the energy storage module can be set to earth potential as the reference potential.
  • the energy storage of the energy storage module is preferably a supercapacitor, a battery, a flywheel storage or the like.
  • the choice of an energy store for the energy storage module can be based on the topology of the
  • Converter arrangement can be made flexibly and adapted to the respective application.
  • a constellation is possible in which a first energy storage module can only be used to store energy and not to withdraw electrical energy.
  • One example is the use of an electrolyser.
  • Converter arrangement different energy storage modules with energy storage different storage characteristics.
  • different storage characteristics e.g. short and long-term storage or energy storage with high and low outputs
  • This can result in an overall characteristic through which the converter arrangement can serve different functionalities, such as e.g. Frequency support through short, high active power provision, day / night compensation with significantly longer but lower storage capacities.
  • the converter is suitably a modular multi-stage converter.
  • the basic structure of a modular multi-stage converter comprises two converter arms per phase branch, each of which extends between one of the DC voltage poles and the AC voltage connection. Every converter arm holds a series connection of two-pole switching modules.
  • Commonly used switch module types are switch modules in half-bridge circuit or in full-bridge circuit.
  • Each of the switching modules of the modular multi-stage converter can be controlled individually by means of a control device.
  • a voltage drop across one of the converter arms is equal to the sum of voltages drop across the associated switching modules.
  • a particularly advantageous step-shaped converter voltage can be generated at its AC voltage connection.
  • Voltage converter module and the associated energy storage each have a separate housing. This arrangement advantageously facilitates the maintenance of the converter arrangement. Their modularity is also increased in this way.
  • the invention further relates to an arrangement for providing an active electrical power, the arrangement comprising an energy storage branch having a
  • Converter valve of a converter is connectable.
  • the object of the invention is to provide such an arrangement which can be used as flexibly as possible and is reliable in operation.
  • the energy storage branch comprises voltage converter modules and energy storage modules assigned to them
  • Voltage converter modules are connected on the input side in the series circuit to one another and on the output side to the respectively associated energy storage module.
  • the energy storage branch advantageously enables flexible connection of DC sources and DC sinks (given by the energy storage of the energy storage modules) at low voltage level to a DC circuit at high voltage level.
  • the DC circuit can be formed by a DC voltage side of a converter.
  • the arrangement can expediently be used for exchanging active power with an AC voltage network by means of a converter, the arrangement being connectable, for example, to the DC voltage side of the converter.
  • the invention further relates to a method for stabilizing an AC voltage network.
  • the object of the invention is to provide such a method that can be used as flexibly as possible.
  • the object is achieved in the method of the type in that reactive power and / or active power is fed into the AC voltage network or taken from the AC voltage network by means of a converter arrangement according to the invention.
  • the advantages of the method according to the invention result in particular from the advantages of the converter arrangement according to the invention already described above.
  • electrical power is exchanged between the energy stores of the energy storage modules as required. This enables a recharge between the individual energy stores. This makes energy management very flexible. A reloading within a single energy storage branch as well as a reloading between energy storage branches connected in parallel can be carried out. Energy stores of a first type of energy storage, for example supercapacitors, can thus be recharged from energy stores of a second type of energy storage, for example battery stores, if required.
  • Figure 1 shows a first embodiment of an inventive converter arrangement in a schematic Dar position
  • Figure 2 shows an example of an energy storage branch of the converter arrangement of Figure 1 in a schematic Dar position
  • Figure 3 shows an example of a voltage converter module and an energy storage module in a schematic representation
  • Figure 4 shows a further example of an energy storage branch in a schematic representation.
  • Figure 1 shows a converter arrangement 1. Die
  • Converter arrangement 1 has an AC voltage side with egg nem three-phase AC voltage connection 2 for connecting to an AC voltage network and a DC voltage side with a first DC voltage pole 3 and a second DC voltage pole 4.
  • the converter arrangement 1 comprises an inverter 6, which is three-phase.
  • the converter 6 accordingly has a first phase branch 7a, a second phase branch 7b and a third phase branch 7c. All three phase branches 7a-c extend between the DC voltage poles 3 and 4.
  • Each phase branch 7a-c comprises a first or upper converter valve 8a-c, which is arranged between the first DC voltage pole 3 and the AC voltage connection 2, and a second or lower one
  • Converter valve 9a-c which is arranged between the AC voltage connection and the second DC voltage pole 4.
  • the converter 6 is a modular multi-stage converter.
  • Each of the converter valves 8a-c, 9a-c is designed as a converter arm with a series connection of two-pole switching modules 10.
  • converter arms are arbitrary and adapted to the respective application.
  • the switching modules 10 are designed, for example, as full-bridge circuits or half-bridge circuits which can be switched off semiconductor switches, but other circuit variants are also possible.
  • an arm inductance 11 is also arranged in each of the converter arms.
  • all switching modules 10 are constructed in the same way, but this does not generally have to be the case.
  • the converter arrangement 1 further comprises a first energy storage branch 12.
  • the first energy storage branch 12 extends between the two DC voltage poles 3, 4 on the DC voltage side of the converter 6.
  • voltage converter modules 13 are arranged, which are connected on the input side in a series circuit are. At an exit 14 of each
  • Voltage converter module 13 is connected to an energy storage module 15a-f.
  • the structure of the voltage converter modules 13 and the energy storage modules 15a-f is discussed in more detail in FIG. 2 below.
  • Each of the energy storage modules 15a-f comprises an energy store.
  • the energy storage modules 15a-c can include battery storage
  • the energy storage modules 15d, e each have supercapacitors or ultracaps
  • the energy storage module 15f can be a memory operated by an electrolyzer.
  • the converter arrangement 1 further comprises a second energy storage branch 16.
  • the second energy storage branch 16 extends between the two direct voltage poles 3, 4 on the direct voltage side of the converter 6 and parallel to the first energy storage branch 12.
  • voltage converter modules 13 are arranged are connected to one another in a series connection on the input side. At an exit 14 of each
  • Each of the energy storage modules 15g-l comprises an energy store. Different types of energy storage are used in the second energy storage branch 16.
  • the energy storage modules 15g-j can include battery storage, the energy storage modules 15k a flywheel storage and the energy storage module 151 in turn a battery.
  • the converter arrangement 1 further comprises a control unit 17 for regulating the energy consumption and energy withdrawal of the energy storage modules 15a-l.
  • the control unit 17 can be used, in particular, to switch semiconductor switches
  • FIG. 2 shows an example of an energy storage branch 20, which is one of the energy storage branches 12, 16 of the
  • the energy storage branch 20 comprises a first connection 21 for connecting to a first DC voltage pole and a second connection 22 for connecting to a second DC voltage pole.
  • the energy storage branch 20 further comprises a branch choke 23.
  • Voltage converter modules 24 with an input side 25 and an output side 26.
  • the input side are
  • Voltage converter modules 24 connected to one another in a series circuit. Each is on the output side
  • Voltage converter module 24 is connected to an energy storage module 27 assigned to it by means of locking switches 28a, b.
  • the voltage converter module 24 comprises a first switchable semiconductor switch 31, a second switchable semiconductor switch 32 and an intermediate circuit capacitor 35, which are connected to one another in a half-bridge circuit. Furthermore, the voltage converter module 24 comprises a third semiconductor switch 33 that can be switched off and a fourth semiconductor switch 34 that can be switched off, wherein the energy storage module 27 can be bridged by means of the fourth semiconductor switch 34.
  • the voltage converter module 24 also includes an inductance 36 which is arranged electrically in series with an energy storage 37 of the energy storage module 27.
  • a total energy storage branch voltage UDC can accordingly be in the example shown in the range up to 500 kV.
  • FIG. 3 shows an example of a voltage converter module 40 and an energy storage module 41 in one
  • Voltage converter module 40 and energy storage module 41 are not electrically isolated from one another in their operation.
  • the voltage converter module 40 comprises four semiconductor switches 31-34 in the form of IGBTs, wherein each of the semiconductor switches 31-34 has a free-wheeling diode D connected in anti-parallel. Otherwise, the construction of the voltage converter module 40 corresponds to that of the voltage converter module 24 of FIG. 2, to which reference is hereby made accordingly. The same applies to the construction of the energy storage module 41, the construction of which corresponds to that of the energy storage module 27 in FIG. 2.
  • the voltage converter module 40 and the energy storage module 41 each have their own housing 45 and 46, which can be releasably connected to one another via a first mechanical locking switch 42 and a second mechanical locking switch 43.
  • a grounding switch 44 is provided for grounding the energy storage module 41.
  • the locking switches 42 and 43 are closed, so that an electrical connection is established between the voltage converter module 40 and the energy storage module 41.
  • the earthing switch 44 is open.
  • the locking switches 42 and 43 are open, so that the electrical connection between the
  • Voltage converter module 40 and the energy storage module 41 is separated.
  • the earthing switch 44 is closed.
  • FIG. 4 shows a further example of an energy storage branch 50 which is suitable, for example, for the converter arrangement 1 in FIG. 1.
  • the structure of the energy storage branch 50 largely corresponds to that of the energy storage branch 20 in FIG. 2.
  • the same and similar elements are therefore provided with the same reference numerals, so that only the differences are shown below between the energy storage branches 20 and 50 is in more detail gene.
  • the voltage converter modules 24 of the energy storage branch 50 are arranged in a container 51.
  • the arrangement of the voltage converter modules 24 corresponds to a U-shaped arrangement.
  • the U-shaped arrangement of the voltage converter modules 24 makes it possible to place the container 51 spatially in the middle between the energy storage modules 55.
  • Each of the energy storage modules 55 has its own container housing 52, so that the energy storage modules 55 can be arranged on the outside in arrangements 53, 54 arranged next to and / or one above the other. This facilitates access to the energy storage modules 55 in a maintenance or service case.
  • each of the energy storage modules 55 of the energy storage branch 50 comprises a multiplicity of energy stores 56 which are connected to one another in an electrical parallel connection.

Abstract

L'invention concerne un dispositif convertisseur (1) comprenant un convertisseur (6) ayant une pluralité de vannes de convertisseur (8a-c, 9a-c) comportant chacune une pluralité de commutateurs semi-conducteurs et une branche d'accumulation d'énergie (12, 16) disposée parallèlement à au moins une des vannes de convertisseur. L'invention est caractérisée en ce que la branche de stockage d'énergie comprend des modules de convertisseur de tension (13) et des modules de stockage d'énergie (15a-l), les modules de convertisseur de tension étant reliés les uns aux autres en série du côté entrée et au module d'accumulation d'énergie correspondant du côté sortie. En outre, l'invention concerne un dispositif comportant la branche d'accumulation d'énergie et un procédé de stabilisation d'un réseau à tension alternative au moyen du dispositif convertisseur.
EP18740149.2A 2018-07-04 2018-07-04 Convertisseur multipoint modulaire doté d'unités d'accumulation modulaires Pending EP3791466A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/068138 WO2020007464A1 (fr) 2018-07-04 2018-07-04 Convertisseur multipoint modulaire doté d'unités d'accumulation modulaires

Publications (1)

Publication Number Publication Date
EP3791466A1 true EP3791466A1 (fr) 2021-03-17

Family

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Application Number Title Priority Date Filing Date
EP18740149.2A Pending EP3791466A1 (fr) 2018-07-04 2018-07-04 Convertisseur multipoint modulaire doté d'unités d'accumulation modulaires

Country Status (3)

Country Link
US (1) US11356033B2 (fr)
EP (1) EP3791466A1 (fr)
WO (1) WO2020007464A1 (fr)

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EP4128468A1 (fr) 2020-05-20 2023-02-08 Siemens Energy Global GmbH & Co. KG Dispositif et procédé pour stabiliser un réseau de tension alternative
CN113783444A (zh) 2020-06-10 2021-12-10 台达电子企业管理（上海）有限公司 三相系统及其分布式控制方法
CN113783180A (zh) * 2020-06-10 2021-12-10 台达电子企业管理（上海）有限公司 三相供电系统及其供电方法

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