EP4378065A1 - Procédé de commande d'un onduleur, et onduleur - Google Patents

Procédé de commande d'un onduleur, et onduleur

Info

Publication number
EP4378065A1
EP4378065A1 EP22747983.9A EP22747983A EP4378065A1 EP 4378065 A1 EP4378065 A1 EP 4378065A1 EP 22747983 A EP22747983 A EP 22747983A EP 4378065 A1 EP4378065 A1 EP 4378065A1
Authority
EP
European Patent Office
Prior art keywords
bridge
inverter
l1ac
l2ac
l3ac
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
EP22747983.9A
Other languages
German (de)
English (en)
Inventor
Uwe Stickelmann
Alexander UNRU
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.)
SMA Solar Technology AG
Original Assignee
SMA Solar Technology 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 SMA Solar Technology AG filed Critical SMA Solar Technology AG
Publication of EP4378065A1 publication Critical patent/EP4378065A1/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
    • H02M7/53—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
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series
    • 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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • 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
    • H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
    • 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
    • H02M7/487—Neutral point clamped inverters

Definitions

  • the application relates to a method for operating an inverter with a DC input and an AC output, and an inverter and its use.
  • the inverter can be used to connect photovoltaics or other specific DC voltage sources to an AC grid
  • DC can refer to direct current or direct voltage
  • a DC source can correspondingly refer to a direct current source or a direct voltage source.
  • resistors can be connected to the output side of the DC source for discharging. These resistors convert the remaining energy from the fuel cell or the intermediate circuit into heat. Since the residual energy is usually quite high, the resistors must be able to convert large amounts of energy and are therefore very large and expensive. In particular, these resistors represent additional components that mean increased complexity in the control and operational management of the overall system.
  • a PV inverter usually starts up in the morning as soon as the DC voltage of the PV generator is sufficiently high and the inverter connects to the AC grid. It is problematic if the DC voltage is sufficiently high, but the irradiation is so low that switching on the AC-side grid would cause the DC voltage to drop again immediately and would immediately cause an AC grid disconnection. This permanent switching process is at the expense of the service life of the mains disconnection point, because this is usually only designed for a certain number of switching cycles. At this point, it makes sense to only initiate an AC grid connection if not only sufficient DC voltage but also sufficient DC power is available. The same problem can also occur with wind generators if sufficient power is not yet available.
  • the available power of the DC source can be determined by loading it and thereby charging the intermediate circuit of the two-stage inverter to a specific potential.
  • the power availability of the DC source can be directly deduced from the energy content of the charging process.
  • the DC voltage of the DC source is mainly used as an indicator.
  • this indicator can be unreliable, since in this case there is no information about the rated current.
  • one object of the application is to provide an improved method and an improved inverter for loading a DC source that can be connected to the inverter.
  • An inverter has a direct current input for connection to a DC source and an alternating current output for connection to an AC network via isolating switches, with bridge branches of a bridge circuit being connected to the alternating current output via line reactors.
  • the AC output can be connected to the AC grid via the disconnect switches and can be disconnected from the AC grid via the disconnect switches.
  • the inverter is designed to feed the electrical power provided by the DC source into the AC grid.
  • a method for operating the inverter has the following steps: a) opening the isolating switch, b) driving semiconductor switches of at least two bridge arms of the bridge circuit, which are connected on the AC side after at least one mains choke, in such a way that the DC source that can be connected to the DC input is loaded becomes.
  • a total of currents flowing out of at least one of the at least two bridge branches on the AC side corresponds in their sum to a total of currents flowing into at least one other of the at least two bridge branches on the AC side. This means that the sum of the currents flowing out of the bridge branches on the AC side corresponds to the sum of the currents flowing into the bridge branches on the AC side.
  • the loading can be done without the use of additional resistive components. This enables a simpler and less expensive design of the inverter.
  • the DC source from which the inverter can feed electrical power into the AC grid can be loaded in a targeted manner without power being fed into the AC grid in this situation must.
  • the DC source is loaded by drawing electrical power from the DC source and consuming it within the inverter. The power does not have to be consumed via additional components and/or by feeding it into an AC network and/or by other components that can be connected to the AC output.
  • the switching losses of an inverter are used, which with an efficiency of the bridge circuits of 98%, for example, can be in the order of approx.
  • the discharge power can be 2kW. This value represents a significant advantage over, for example, discharging a DC voltage source using a 2kW resistor.
  • a quick discharge of DC-side charge storage serve as in the form of the application for a hydrogen fuel cell or a PV system in AC power failure or in a controlled shutdown of the hydrogen fuel cell system or the PV system.
  • the AC-side connection of the at least two bridge arms of the bridge circuit behind the at least one mains choke can take place, for example, by closing a relay before step b). It is also possible that the AC-side connection of the at least two bridge arms of the bridge circuit is already present behind the at least one mains choke and no relay has to be provided for this. As a rule, it is necessary for the bridge arms to be connected to carry out the method after disconnection from the grid via switching devices, for example relays.
  • inverters that have two or more parallel bridge arms for each phase, which are operated in interleaving mode, for example are, a connection of the bridge branches behind the at least one mains choke of the parallel bridge branches already exists, so that the method can be carried out using these parallel bridge branches without the use of additional relays. Nevertheless, in this case, alternatively, individual two or more parallel bridge arms per phase can be connected to bridge arms of other phases via relays.
  • a three-phase inverter which has a bridge arm for each phase, for example, two bridge arms can be connected to each other, so that the current flowing out of one bridge arm flows into the other bridge arm.
  • all three bridge branches can be connected to one another so that the current flowing out of one bridge branch is divided and flows into the other two bridge branches, or the total currents flowing out of two bridge branches flow into the third bridge branch.
  • the semiconductor switches for loading the DC source connected to the DC input are controlled in such a way that the inverter is operated in a voltage setting mode with a voltage of zero at the AC output.
  • the semiconductor switches can be activated in the same way as in regular feed operation, with only the regulation of the inverter in voltage-adjusting operation to a target value of the output voltage of zero, must regulate according to the short circuit present through the connection of the bridge arms.
  • phase shift of 180° between the currents must also be set in voltage-regulating operation with an output voltage of zero instead of a phase shift of 120° that occurs in regular operation of a three-phase inverter.
  • the bridge circuit for a three-phase inverter can e.g. B. be a B6 bridge circuit.
  • a single-phase inverter with, for example, an H4 bridge circuit or an H5 bridge circuit that has a total of two bridge branches, these two bridge branches can be connected to one another.
  • the semiconductor switches for loading the DC source connected to the DC input can be activated in such a way that the inverter is operated in voltage-regulating operation with a voltage of zero at the AC output.
  • the semiconductor switches of the bridge branches can each be controlled in such a way that they work as DC/DC converters. A DC voltage difference between the two bridge branches then determines the current flow over the connection between the bridge branches.
  • the extent of the load on the DC source that can be connected to the direct current input can thus be set by driving the semiconductor switches.
  • the degree of loading can also be adjusted by the selection of the bridge arms whose semiconductor switches are used for the method.
  • An adjustable load is z. B. made possible by, for example, when operating two bridge arms each as a DC / DC converter via the voltage difference between the connected bridge arms of the current flowing is set. This can also be used for monitoring a fuel cell, for example, by recording a V(l,t) voltage characteristic.
  • a control of the bridge branches as a DC/DC converter is also possible with three or more connected bridge branches.
  • the topology of the inverter bridge is not limited to the B6, H4 or H5 circuits mentioned, but can include any topology which has at least two bridge branches.
  • the bridge branches can also have, for example, an NPC, also known as INPC, a BSNPC, also known as TNPC, or an ANPC topology.
  • An inverter has a DC input and an AC output and a bridge circuit with controllable semiconductor switches.
  • the DC input can be connected to a DC source and the bridge circuit is connected to the AC output via line reactors.
  • the AC output can be connected to an AC grid via a circuit breaker, with the inverter being designed to feed electrical power provided by the DC source into the AC grid.
  • the inverter also has a control unit that is designed and set up to carry out the method described above.
  • the control unit z. B. formed as a processing unit with memory and processor, with instructions that correspond to the method steps can be executed on the processor.
  • Such an inverter can, for. B. can be used to discharge a DC source connected to the DC input. In this case, the discharge can take place with a discharge power up to the maximum power loss of the semiconductor switches.
  • Such an inverter can, for. B. can also be used to determine the power availability of a DC source connected to the DC input.
  • the DC source can be briefly loaded up to the maximum power loss of the inverter and the load capacity of the DC source can be determined from the determined current and voltage values.
  • 1 schematically shows a method for operating an inverter
  • 2 shows a schematic of an inverter with a DC source and AC network and exemplary embodiments of phase branches
  • FIG. 3 shows exemplary embodiments of bridge branches with semiconductor switches
  • Figs. 4 to 8 show exemplary embodiments of three-phase bridge circuits
  • Fig. 9 shows schematically the operation of two bridge arms of Fig. 8;
  • the inverter 100 can be single-phase or multi-phase, for example two-phase or three-phase, and can be connected accordingly to a single-phase, a two-phase or a three-phase AC grid.
  • the procedure has the following steps: a) Circuit breakers connecting the inverter to an AC grid are opened. b) Semiconductor switches T1, T2, T3, T4, T5, T6 of at least two bridge branches 125 of the bridge circuit 110 are controlled in such a way that a DC source 10 connected to a DC input of the inverter 100 is loaded.
  • the at least two bridge arms 125 are connected on the AC side behind at least one line reactor L1ac, L1ac_a, L1ac_b, L2ac, L2ac_a, L2ac_b, L3ac, L3ac_a, L3ac_b.
  • the semiconductor switches T1, T2, T3, T4, T5, T6 can therefore be controlled in such a way that a total of currents flowing out of at least one of the at least two bridge arms 125 on the AC side total a total of currents flowing into at least one other of the at least two bridge arms 125 on the AC side inflowing currents. This means that the sum of the currents flowing out of the bridge branches 125 on the AC side corresponds to the sum of the currents flowing into the bridge branches 125 on the AC side.
  • FIG. 1 Such an inverter 100, which is set up for the method of FIG. 1, is shown in FIG.
  • the inverter 100 has a direct current input and an AC output, the DC input being connected to a DC source 10 and three phase legs 120, 130 of a bridge circuit 110 being connected to the AC output.
  • the AC output is connected to a three-phase AC grid 20 , with the inverter 100 being designed to feed electrical power made available by the DC source 10 into the AC grid 20 .
  • the inverter 100 has a phase arm 120 , 130 for each phase of the AC network 20 .
  • Each phase arm 120, 130 has bridge arms 125 and passive components such as inductors and capacitors.
  • each phase branch 120, 130 has one or more line reactors L1ac, L1ac_a, L1ac_b and a capacitor C1ac for connection to a center potential M or a negative potential DC- of the DC source 10.
  • the phase branch 120, 130 can be designed as a monolithic phase branch 120 or as a phase branch 130 with a plurality of parallel bridge branches 125, here two parallel bridge branches 125, for example.
  • the parallel bridge branches 125 are preferably operated using the interleaving method, in which the semiconductor switches T1, T2, T3, T4, T5, T6 of the bridge branches 125 are clocked offset to one another.
  • the inverter 100 includes a control unit 150 for controlling the semiconductor switches T1, T2, T3, T4, T5, T6 of the bridge arms 125.
  • FIG. 3 Possible topologies for the bridge branches 125 are shown in FIG. 3 by way of example. Shown are arrangements of the semiconductor switches T1, T2, T3, T4, T5,
  • T6 for a TNPC topology which is alternatively also referred to as BSNPC topology
  • INPC topology which is alternatively also referred to as (standard) NPC topology
  • ANPC topology which is used, for example, in B6, H4 or H5 circuits.
  • 4 shows a three-phase bridge circuit 110 with monolithic phase legs 120 in which relays R connect the phases to one another.
  • Disconnectors GR for separating the inverter 100 from the AC grid 20 are open.
  • Each phase arm 120 has a bridge arm 125 and passive components such as line reactors L1ac, L2ac, L3ac and capacitors C1ac, C2ac, C3ac, the bridge arms 125 being connected to the AC output via line reactors L1ac, L2ac, L3ac.
  • Each phase of the AC output is connectable to the AC grid 20 via disconnect switches GR.
  • a possible energy flow 140 represents a possible path for generating losses to load the DC source 10.
  • the load flow 140 takes place via one of the relays R, in the example shown between phase 1 and phase 2.
  • an AC-side short circuit of two phases of the inverter 100 is used.
  • the two AC phases behind the mains chokes L1ac, L2ac are short-circuited via the relay R and the semiconductor switches T1, T2, T3, T4, T5, T6 are controlled, for example, so that the system is operated in DC/DC converter mode.
  • the semiconductor switches T1, T2, T3, T4, T5, T6 can also be controlled in such a way that two AC signals that are phase-shifted by 180° are generated and the voltage at the AC output is regulated to zero.
  • phase 5 shows a three-phase bridge circuit 110 with phase arms 130 in an interleaving topology.
  • the disconnect switches GR are open to disconnect the inverter 100 from the AC grid 20 .
  • Each phase of the phase branches 130 has parallel sub-phases phase 1a, phase 1b, phase 2a, phase 2b, phase 3a, phase 3b.
  • Each sub-phase has a bridge branch 125 and passive components such as mains chokes L1ac_a, L1ac_b, L2ac_a, L2ac_b, L3ac_a, L3ac_b and capacitors C1ac, C2ac, C3ac, the bridge branches 125 being connected via the mains chokes L1ac_a, L1ac_b, L2ac_a, L2ac_b, L3ac_a, L3ac_b connected to the AC outlet.
  • Each phase of the AC output is connectable to the AC grid 20 via disconnect switches GR.
  • relays R can optionally be used.
  • a realization of the method is here, however, without Relay R possible.
  • a possible energy flow 140 represents a possible path for generating losses to load the DC source 10.
  • the load flow 140 takes place without a relay R.
  • the load flow 140 can, for. B. directly via the connection point of the sub-phase phase 1a and phase 1b.
  • FIG. 6 shows an embodiment with a three-phase bridge circuit 110 with monolithic phase branches 120, in which all three phases are connected via the two relays R.
  • the semiconductor switches T1, T2, T3, T4, T5, T6 in the bridge arms 125 are driven in such a way that the short circuit on the AC side is fed and energy flows 140 are made possible.
  • an AC-side short circuit of three phases of the inverter 100 is used.
  • the three AC phases behind the mains chokes L1ac, L2ac, L3ac are short-circuited via the relay R and the semiconductor switches are controlled in such a way that the system is clocked to a short circuit.
  • the bridge arms can also be operated as DC/DC converters.
  • FIG. 7 shows an embodiment of a three-phase bridge circuit 110 with interleaving phase branches 130, in which all three phases--and thus also the sub-phases--are connected via the two relays R.
  • the semiconductor switches T1, T2, T3, T4, T5, T6 in the bridge arms 125 are driven in such a way that the short circuit on the AC side is fed and energy flows 140 are made possible.
  • the bridge branches can also be operated as DC/DC converters.
  • FIG. 8 An embodiment of a three-phase bridge circuit 110 with interleaving phase branches 130 is shown in FIG. 8 .
  • the three-phase inverter 100 has two sub-phases z. B. in ANPC topology in interleaving.
  • the bridge arms 125 are z. B. formed in ANPC topology and there are no relays R provided between the phases in this embodiment.
  • the Inverter 100 thus has two bridge branches for each of the three phases, which are connected in parallel both on the AC side and on the DC side.
  • the inverter 100 can also have more sub-phases per phase.
  • the AC grid 20 can be disconnected from the inverter 100 via the disconnectors GR.
  • the method of operating the inverter 100 in FIG. B. have the following steps: a) Opening the circuit breaker GR to separate the inverter 100 from the AC grid 20. As a result, sub-phases 1a and 1b and sub-phases 2a and 2b and sub-phases 3a and 3b are connected in parallel to one another. b) Changeover of the operating method on the AC side of the phases from AC current regulated to DC current or voltage regulated.
  • the semiconductor switches T1, T2, T3, T4, T5, T6 of the bridge arms 125 are controlled in such a way that the bridge arms 125 in conjunction with the line reactors L1ac_a, L1ac_b, L2ac_a, L2ac_b, L3ac_a, L3ac_b and the capacitors C1ac, C2ac, C3ac assume the function of DC/DC converters (Fig. 9).
  • a bridge circuit 110 in H4 topology for a single-phase inverter 100 is shown in FIG. 10 .
  • the phase legs 120 of an H4 topology are equal to the phase legs 120 of a three-phase B6 bridge circuit.
  • the bridge arms 125 are designed as half-bridges and are connected via the line reactors L1ac and L2ac to the AC output, which can be connected to the AC grid 30 via the isolating switch GR.
  • the phase branches 120 can be connected via the relay R to carry out the method, in particular to generate self-consumption.
  • the lower part of FIG. 10 shows an example of a load flow 140 for carrying out the method, in particular for generating self-consumption, for a single-phase H4 topology with relay R for connecting the two phases.
  • the isolating switches GR are open and the relay R can be used to generate a load flow 140 between the half-bridges T1/T2 and T3/T4.
  • the actuation of the semiconductor switches T1, T2, T3, T4 of the bridge arms 125 is analogous to the actuation of FIGS as a DC/DC converter or by operating the bridge branches 125 as an inverter bridge, the output voltage of which is regulated to zero in accordance with the short circuit that is present.
  • FIG. 11 shows an example of a load flow 140 for executing the method, in particular for generating self-consumption, for a single-phase H5 topology with relay R for connecting the two phases.
  • the isolating switches GR are open and the relay R can be used to generate a load flow 140 between the half-bridges T1/T2 and T3/T4.
  • the semiconductor switches T1, T2, T3, T4, T5 of the bridge arms 125 are controlled either by operating the bridge arms 125 in conjunction with the line reactors L1ac and L2ac and the capacitors C1ac and C2ac as a DC/DC converter or by operating the bridge arms 125 as an inverter bridge, the output voltage of which is regulated to zero in accordance with the short circuit that is present.

Landscapes

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

Abstract

L'invention concerne un procédé de commande d'un onduleur (100) avec une entrée de courant continu et une sortie de courant alternatif. L'entrée de courant continu peut être connectée à une source de courant continu (10), des branches de pont (125) d'un circuit en pont (110) sont connectées à la sortie de courant alternatif par l'intermédiaire de bobines d'arrêt de puissance (L1ac, L1ac_a, L1ac_b, L2ac, L2ac_a, L2ac_b, L3ac, L3ac_a, L3ac_b), et la sortie de courant alternatif peut être connectée à un réseau de courant alternatif (20, 30) par l'intermédiaire de sectionneurs (GR), l'onduleur (100) étant conçu pour alimenter le réseau de courant alternatif (20, 30) en énergie électrique. Le procédé comprend les étapes consistant à : - ouvrir les sectionneurs (GR), et - actionner des commutateurs à semi-conducteurs (T1, T2, T3, T4, T5, T6) d'au moins deux branches de pont (125) du circuit en pont (110), lesdites branches de pont étant connectées à la suite d'au moins une bobine d'arrêt de puissance (L1ac, L1ac_a, L1ac_b, L2ac, L2ac_a, L2ac_b, L3ac, L3ac_a, L3ac_a, L3ac_b) du côté courant alternatif de sorte qu'une source de courant continu (10) connectée à l'entrée de courant continu est chargée, la somme de la totalité des courants circulant à partir d'au moins une desdites branches de pont (125) du côté courant alternatif correspondant à la somme de la totalité des courants circulant dans au moins une autre branche de pont desdites branches de pont (125) du côté courant alternatif. L'invention concerne également un onduleur.
EP22747983.9A 2021-07-30 2022-07-06 Procédé de commande d'un onduleur, et onduleur Pending EP4378065A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021119899.2A DE102021119899B4 (de) 2021-07-30 2021-07-30 Verfahren zum betrieb eines wechselrichters und wechselrichter
PCT/EP2022/068782 WO2023006370A1 (fr) 2021-07-30 2022-07-06 Procédé de commande d'un onduleur, et onduleur

Publications (1)

Publication Number Publication Date
EP4378065A1 true EP4378065A1 (fr) 2024-06-05

Family

ID=82742956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22747983.9A Pending EP4378065A1 (fr) 2021-07-30 2022-07-06 Procédé de commande d'un onduleur, et onduleur

Country Status (6)

Country Link
US (1) US20240162837A1 (fr)
EP (1) EP4378065A1 (fr)
JP (1) JP2024525983A (fr)
CN (1) CN117751514A (fr)
DE (1) DE102021119899B4 (fr)
WO (1) WO2023006370A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009014522A1 (fr) * 2007-07-26 2009-01-29 Utc Power Corporation Système de puissance ayant des sources de puissance en courant alternatif et en courant continu
JP5398162B2 (ja) * 2008-03-31 2014-01-29 三菱電機株式会社 系統連系インバータ装置
EP2190110B1 (fr) * 2008-11-25 2012-10-10 SMA Solar Technology AG Détermination de la capacité de charge d'une source de courant continu pouvant être connectée au réseau sur un interrupteur et un onduleur au réseau
US20130119763A1 (en) * 2011-11-14 2013-05-16 Huibin Zhu Precharging and clamping system for an electric power system and method of operating the same
JP2014117086A (ja) * 2012-12-11 2014-06-26 Diamond Electric Mfg Co Ltd 系統連系システム
JP6247189B2 (ja) * 2014-10-02 2017-12-13 ファナック株式会社 直流リンク残留エネルギーの放電機能を有するモータ制御装置
US9762143B2 (en) * 2015-04-29 2017-09-12 Toshiba Mitsubishi-Electric Industrial Systems Corporation Devices and methods for controlling current in inverters
DE102017127311A1 (de) * 2017-11-20 2019-05-23 Ge Energy Power Conversion Technology Limited Vorrichtung und Verfahren zur Vormagnetisierung eines Netztransformators in einem Stromrichtersystem
ES2895720T3 (es) 2018-12-07 2022-02-22 Ge Energy Power Conversion Technology Ltd Métodos para arrancar un sistema inversor y sistemas inversores

Also Published As

Publication number Publication date
DE102021119899B4 (de) 2023-05-25
CN117751514A (zh) 2024-03-22
WO2023006370A1 (fr) 2023-02-02
JP2024525983A (ja) 2024-07-12
DE102021119899A1 (de) 2023-02-02
US20240162837A1 (en) 2024-05-16

Similar Documents

Publication Publication Date Title
EP3211784B1 (fr) Sous-module double pour un convertisseur de fréquence multipoints modulaire et convertisseur de fréquence multipoints modulaire en étant dote
EP3014725B1 (fr) Dispositif accumulateur d'énergie doté d'un circuit d'alimentation en tension continue et procédé pour fournir une tension continue à partir d'un dispositif accumulateur d'énergie
EP2764595B1 (fr) Procédé de protection d'un condensateur de circuit intermédiaire dans un circuit de conversion de courant
DE102013212682B4 (de) Energiespeichereinrichtung mit Gleichspannungsversorgungsschaltung und Verfahren zum Bereitstellen einer Gleichspannung aus einer Energiespeichereinrichtung
EP1876696A2 (fr) Ensemble circuit convertisseur de courant pour une liaison de tension de courant continu élevée
DE102019106485B4 (de) Weissach-Gleichrichteranordnung
DE102016123924A1 (de) Modulare Leistungselektronik zum Laden eines elektrisch betriebenen Fahrzeugs
WO2018206201A1 (fr) Dispositif de batterie comprenant au moins une ligne de modules, dans laquelle des unités modules sont branchées en série les unes derrière les autres, ainsi que véhicule à moteur et procédé de fonctionnement pour le dispositif de batterie
DE102008032813A1 (de) Netzanbindung von Solarzellen
EP2408081A1 (fr) Convertisseur multi-niveau modulaire
EP2523332A1 (fr) Convertisseur de fréquence doté d'une résistance de précharge et procédé de fonctionnement de celui-ci
WO2012104333A1 (fr) Procédé de fourniture de courant réactif au moyen d'un convertisseur et ensemble convertisseur et installation d'alimentation en énergie
DE102021119899B4 (de) Verfahren zum betrieb eines wechselrichters und wechselrichter
EP3363091B1 (fr) Dispositif et procédé pour commander un flux de charge dans un réseau à tension alternative
EP3531547A1 (fr) Circuit de commande permettant de coupler une machine synchrone avec un réseau de tension et procédé de fonctionnement dudit circuit
DE102013109714A1 (de) Verfahren zum Betreiben einer elektrischen Schaltung sowie elektrische Schaltung
EP4315579A1 (fr) Dispositif convertisseur c.c.-c.c. pour une éolienne, système d'entraînement électrique ou système d'alimentation c.c industriel et procédé de fonctionnement
EP3331118B1 (fr) Installation de transfert d'énergie électrique
EP3741023B1 (fr) Dispositif et procédé pour commander un flux de charge dans un réseau à tension alternative
DE202020101549U1 (de) Schaltungsanordnung mit mehreren Leistungselektronikmodulen
DE102011075658B4 (de) Verfahren zum Erzeugen von Energie mittels einer Photovoltaikanlage und Photovoltaikanlage
EP2608390A1 (fr) Onduleur multiniveau avec une pluralité des sous-modules onduleur ayant une séparation de protection électrique entre la commande centrale et ces sous-modules
WO2025228606A1 (fr) Agencement de transmission d'énergie électrique et couplage de deux systèmes triphasés asynchrones
CH719226A2 (de) Umrichter.
DE202016104020U1 (de) Spannungsgeführte Stromrichteranordnung mit einem vorgeladenen Widerstandselement

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20240229

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20240812

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED