WO2015104177A2 - Procédé et onduleur permettant d'alimenter un réseau de tension alternative en énergie électrique - Google Patents

Procédé et onduleur permettant d'alimenter un réseau de tension alternative en énergie électrique Download PDF

Info

Publication number
WO2015104177A2
WO2015104177A2 PCT/EP2014/078817 EP2014078817W WO2015104177A2 WO 2015104177 A2 WO2015104177 A2 WO 2015104177A2 EP 2014078817 W EP2014078817 W EP 2014078817W WO 2015104177 A2 WO2015104177 A2 WO 2015104177A2
Authority
WO
WIPO (PCT)
Prior art keywords
phase
phases
inverter
feed
output interfaces
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.)
Ceased
Application number
PCT/EP2014/078817
Other languages
German (de)
English (en)
Other versions
WO2015104177A3 (fr
Inventor
Gisbert Krauter
Thomas Herrmann
Tobias Michler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2015104177A2 publication Critical patent/WO2015104177A2/fr
Publication of WO2015104177A3 publication Critical patent/WO2015104177A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/388—Arrangements for the handling of islanding, e.g. for disconnection or for avoiding the disconnection of power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/40—Synchronisation of generators for connection to a network or to another generator
    • H02J3/44—Synchronisation of generators for connection to a network or to another generator with means for ensuring correct phase sequence

Definitions

  • the present invention relates to a method for feeding electrical energy into an alternating voltage network and to an inverter for feeding electrical energy into an alternating voltage network.
  • Inverters can be used to feed electrical energy, in particular photovoltaic, from wind energy or hydropower, from fuel cells or from batteries provided energy in an AC power grid.
  • electrical energy in particular photovoltaic
  • wind energy or hydropower from fuel cells or from batteries provided energy in an AC power grid.
  • inverters that feed either single-phase or three-phase.
  • the infeed can not be flexibly selected, but is designed in such a way that the inverter can be used either only for single-phase or three-phase AC grids.
  • a corresponding device and a corresponding method for feeding electrical energy into an alternating voltage network it is not necessary that the number of feed phases is fixed in advance. Instead, the number of feed-in phases at the installation site can be set or automatically selected by the device. According to one embodiment, in a corresponding device and a corresponding method, in multi-phase feed the
  • Infeed power of each individual phase can be set manually or automatically controlled. This has advantages in terms of flexibility and cost and allows a restriction of the variety of variants, since only one device for 1- and n-phase is required. In addition, a self-consumption increase by dynamically adjusted feed is possible. Also, a flexible island operation with the advantages of a three-phase inverter is possible; unlike a construction of three single-phase devices.
  • AC power grid using an inverter, the one or more input interfaces, and a plurality of output interfaces for providing the electrical energy comprises the following steps:
  • the input interface (s) may include two or more electrical terminals for applying a DC voltage provided by a DC voltage source.
  • the inverter may be configured to convert the DC voltage of each input interface separately into a single-phase or multi-phase AC voltage.
  • An output interface may have at least one terminal for outputting an alternating voltage or an alternating current to the
  • the number of feed phases required for the AC mains can also be one.
  • the number can be less than or equal to the number of output interfaces.
  • the AC mains can be a single-phase
  • the inverter can thus be used for single-phase or multi-phase operation.
  • the method may include a step of selecting a phase configuration for the number of injection phases. It can be in the step of
  • Providing the electrical energy using the phase configuration can be provided at the number of output interfaces. In this way, the inverter can be used for different phase configurations. Under a phase configuration, for example, a
  • the required number of feed phases may be selected as one feed phase, two feed phases, or more than two
  • the method may include a step of closing an electrical
  • Output interfaces include when the number of output interfaces is less than the plurality of output interfaces. In this way, the maximum possible output power of the inverter can be provided at the number of output interfaces.
  • the closing step can be carried out using a measuring voltage, wherein the measuring voltage represents a voltage applied to at least one of the two of the plurality of output interfaces.
  • the measuring voltage represents a voltage applied to at least one of the two of the plurality of output interfaces.
  • the phase configuration may be selectively selected as a phase configuration having a phase difference between the at least two feed phases or as a phase configuration having a phase coincidence between the at least two feed phases for a number of at least two feed phases.
  • Inverters are used both for AC grids in which there is no phase difference between the individual phases as well as for AC grids are used, where there is a phase difference between the individual phases.
  • the method may include a step of determining a feed-in power for each of the number of output interfaces. In the step of Provision can be made at each of the number of output interfaces, the feed-in power determined for this output interface. In this way, the feed-in power can be set individually for each of the number of output interfaces.
  • Feed-in power for example, with regard to a minimum network load, a pure power consumption, a voltage-controlled mode, a default by network control or a consumer control can be set.
  • the method may comprise a step of reading in a measurement value representing a measurement voltage and additionally or alternatively a measurement current for each of the plurality of output interfaces.
  • a measured value can represent a value detected at an output interface, at an output line connected to the output interface or at a network transition point connected to the output interface.
  • the required number of feed phases may be less than
  • Infeed phases are selected using the measured values. In this way is an automatic configuration of the inverter
  • Phase configuration for the number of supply phases to a preset via the user interface phase configuration can be set.
  • the user interface can be an operator-operable interface which is attached directly to the inverter or via a
  • Data connection can be removed from the inverter.
  • the operation can also be carried out via a laptop or via a server access, which then sends the data to the inverter.
  • the inverter can be configured by an operator.
  • a corresponding inverter for feeding electrical energy into an AC voltage network has the following features: at least one input interface; a plurality of output interfaces for providing the electrical energy; means for determining a number of feed-in phases required for the AC power grid; and means for providing the electrical energy at a number of output interfaces corresponding to the number of injection phases from the plurality of output interfaces using a DC voltage applied to the at least one input interface.
  • a corresponding, for example, three-phase inverter connect only single-phase.
  • the inverter can be a method of
  • the inverter can supply the stand-alone grid with an asymmetrical load.
  • An advantage is also a computer program product with program code, which on a machine-readable carrier such as a semiconductor memory, a
  • Hard disk space or an optical memory can be stored and used to carry out the method according to one of the embodiments described above, when the program code on a
  • FIG. 1 is a block diagram of an inverter according to a
  • FIG. 2 is a flow chart of a method for feeding electrical energy into an AC power network according to an embodiment of the present invention
  • FIG. 3 is a block diagram of an inverter in network operation according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of an inverter in island operation according to an embodiment of the present invention.
  • FIG. 5 shows a plurality of output interfaces of an inverter according to an exemplary embodiment of the present invention
  • FIG. 6 is a configuration table for an inverter according to an embodiment of the present invention.
  • FIG. 7 shows a measuring device for an inverter according to a
  • FIG. 8 is an illustration of a connection of an inverter to a sub-network according to an embodiment of the present invention.
  • FIG. 9 is an illustration of a connection of an inverter to a sub-network according to another embodiment of the present invention.
  • FIG. 1 shows a block diagram of an inverter 100 according to a
  • the inverter 100 which may be implemented as a dynamic inverter, has a
  • Input interface 102 via which the inverter 100 can be connected on the input side with one or more DC voltage sources.
  • the inverter 100 On the output side, the inverter 100 has a plurality of
  • Output interfaces 104, 106, 108 via which the inverter 100 can be coupled to an AC voltage network.
  • the inverter via the output interfaces 104, 106, 108 a
  • An output interface 104, 106, 108 may also be referred to as a phase.
  • the inverter 100 is shown with three output interfaces 104, 106, 108. Such an inverter 100 can optionally be used to feed power into a single-phase, a two-phase, or a three-phase AC mains.
  • the inverter 100 has a device 110 for determining a number of injection phases required for the AC voltage network.
  • the device 110 may be coupled to an operator interface of the inverter 100, via which the inverter 100 can be configured by a person, or to a measuring device, via which a measuring device
  • Such a measuring device can be designed to detect and provide a measured value, for example a measuring current and / or a measuring voltage per output interface 104, 106, 108.
  • Means 110 is configured to determine how many and which of the output interfaces 104, 106, 108 are actively used. To this end, the means 110 may be configured, for example, to provide a signal to disable one or more of the available output interfaces 104, 106, 108, or two or more of the available output interfaces 104, 106, 108
  • the inverter 100 has a device 112 for providing electrical energy to the number of output interfaces 104, 106, 108 determined by the device 110.
  • the device 112 is designed to be applied to the input interface 102
  • the inverter 100 further includes optional means 114 for selecting a phase configuration for the number of injection phases determined by the device 110.
  • the device 114 may be coupled to an operator interface of the inverter 100, via which the inverter 100 can be configured by a person, or to a measuring device, via which a metrological selection of the phase configuration is made possible.
  • the device 114 is designed to transmit the phase configuration to the device 112, so that the
  • Phase configuration to the number of output interfaces 104, 106, 108.
  • the inverter 100 further includes an optional device 116 configured to determine a feed-in power for each of the number of output interfaces 104, 106, 108 determined by the device 110.
  • the device 116 with a
  • Infeed power per output interface is made possible.
  • the device 116 is designed to transmit values of the determined feed-in powers to the
  • Device 112 to communicate so that the device 112 can provide the appropriate feed-in power to the active output interfaces 104, 106, 108.
  • FIG. 2 shows a flow diagram of a method for feeding electrical energy into an AC voltage network according to an exemplary embodiment of the present disclosure present invention.
  • the steps of the method may be implemented using means of a described inverter.
  • the method includes a step 210 in which one for the
  • the method comprises a step 212 in which the electrical energy at a number of injection phases corresponding number of
  • Step 210 may be performed once prior to or during a start-up of the inverter or continuously during operation of the inverter.
  • Step 212 may be performed continuously during operation of the inverter.
  • FIG. 3 shows a block diagram of an inverter 100 in network operation according to an embodiment of the present invention.
  • AC is connected to an AC electrical network 326.
  • the inverter 100 is an inverter for photovoltaic generators 320 with n up to 6 MPP trackers (Maximum Power Point Tracker) and m up to three network phases (LI, L2,
  • FIG. 4 is a block diagram of an inverter in island operation according to an embodiment of the present invention.
  • the inverter 100 is connected on the input side via 1 to n inputs to a DC generator 320. On the output side, the inverter 100 is connected to an AC island network 428 via 1 to m outputs.
  • the inverter 100 is an inverter for photovoltaic generators with n up to, for example, 6 MPP trackers and m up to three network phases (LI, L2, L3), connections for N and PE are not counted since, in principle available).
  • the inverter 100 as described in more detail below, have different additional features.
  • the inverter 100 may be a device that has a measuring device that detects the connected mains phases and has an evaluation unit that adjusts the operating mode of the inverter 100 when the corresponding phase shift offset values are met so that the inverter 100 is up adjusts the connected number of network phases. This makes it possible for the user to do the
  • the inverter 100 may represent a device that further has a configurable connector panel, via which the user
  • the user can explicitly set via a configuration interface, in particular a control panel, on the inverter, how many phases are connected and how they are switched to the power connections of the inverter 100.
  • a configuration interface in particular a control panel
  • the inverter 100 includes a device which makes it possible to also carry out a pulsating power output into the network, which is necessary in particular for single and two-phase networks, since the alternating components of the power do not cancel each other over the phases.
  • the inverter 100 has an interface via which the distribution of the power to the individual phases can be set.
  • a current measuring device on Grid transfer point which is connected to the interface of the inverter and can transmit measurement data, the feed-in power of each individual phase are calculated at the connection point. This information can be the
  • FIG. 5 shows a plurality of output interfaces of an inverter according to an embodiment of the present invention. Shown are three output interfaces 104, 106, 108, also referred to as LI, L2, L3 and additionally a further output interface N as a neutral terminal and a further interface PE as a protective earth connection.
  • FIG. 5 shows a sketch of a connection field with bridges 541, 542 from LI to L2 and L2 to L3 for the single-phase connection of a three-phase inverter.
  • the terminals 104, 106, 108 are led out as pins from a connection field of the inverter.
  • the said bridges 541, 542 each connect two of the terminals 104, 106, 108 with each other and are fixed by nuts on the pins.
  • a connection cable is connected to the pin of the terminal 106. Output power provided by terminals 104, 106, 108 may be fed into the connection cable.
  • the inverter has a configurable connection field with a possibility of bridging a plurality of phase connections 104, 106, 108 in order to also operate on fewer phases 104, 106, 108 than is possible at the maximum
  • connection field is designed so that z. B. via a bridging plug or via ⁇ sen Hampshiren 541, 542 - comparable to the connection pad of an electric motor or an electric water heater - the
  • Phase terminals 104, 106, 108 can be interconnected so that an operation of a suitable three-phase inverter is also possible on less than three phases 104, 106, 108. It is also conceivable that the bridges 541, 542 are set in the cabinet, to later change the
  • Phase number easy to perform at a central location In this case, nothing needs to be kept on the inverter.
  • an automatic bridging device of the phases 104, 106, 108 may be provided, which may be implemented, for example, by a relay or a semiconductor switch.
  • a relay or a semiconductor switch for example, a three-phase inverter, there are a maximum of three
  • the inverter in order for the inverter to automatically detect the phase configuration, has a voltage measuring device at each phase. Such voltage measuring devices are usually present by default anyway, so that the network can be monitored and necessary to be able to feed the current phase synchronous can.
  • the inverter detects whether the phase of the network coincides with another phase, or whether the phase angle is sufficiently large to detect a three-phase network. This is realized according to an embodiment in which the measured value of each voltage is read in by an electronic circuit.
  • phase shift is calculated using a common method relative to the specified phase.
  • the phase information is subsequently evaluated. In addition, it is still relevant whether the phase is actually supplied with voltage or whether the phase connection 104 is not used at all.
  • the inverter recognizes the phase configuration automatically when the grid is switched on, because it compares the phase voltages of the individual phases 104, 106, 108 with each other and selects a mode in a typical pattern
  • the configuration can be automatically detected and adopted in a further embodiment, wherein the inverter then automatically starts feeding or it is after a change or an initial configuration confirmation by the installer on a
  • Phase configuration can be changed by external switching devices in plant operation, in which the inverter is first removed from the network, then changed the phase configuration and then another
  • the temporal courses of the alternating voltages at the individual connection terminals are compared with one another and the phase offset from each other is determined.
  • a common method from mathematics or control engineering can be used.
  • At unused connections no voltage is measured.
  • this case is also easily detectable over a threshold value.
  • the inverter detects deviations outside a permissible tolerance as errors and prevents infeed. To cause large deviations of the phase angle of the nominal value to misconduct on certain consumers such. As electric motors and are an indication of unwanted islanding.
  • phase configuration is to be preset manually via an operator interface. If not all connections of the inverter are used, parts of the
  • Power electronics unused. This can be communicated to the installer via a message.
  • FIG. 6 shows practical configurations in the form of a table.
  • the columns represent a phase angle 650 relative to the terminal 104, the phase
  • the first phase which is connected here will be referred to as LI but could as well have a different name.
  • Inverters start feeding.
  • the prior art is fed in all phases so that in balanced networks with the same phase voltage and the feed current in the three phases has the same amplitude. This has the advantage of even load on the power electronics, but it is not possible to adjust the phase currents individually. Compared to this prior art, the described inverter can be operated so that the phases are individually adjustable.
  • FIG. 7 shows a measuring device 770 for an inverter according to an embodiment of the present invention.
  • the measuring device 770 is designed for three-phase detection of currents and voltages at the grid transfer point.
  • the lines of the phases LI, L2, L3 are each coupled to a current sensor 771 for detecting a current flowing through the phases LI, L2, L3 current.
  • the phases LI, L2, L3, N are with a
  • Voltage measuring device 773 for detecting a voltage difference between the phases LI, L2, L3, N coupled. Measured values of the current sensors 771 and the voltage measuring device 773 are from a
  • Signal conditioning device 775 for example, to provide a trigger, P, cos phi, etc., evaluated.
  • a trigger may serve, for example, as a synchronization pulse or as a time signal or for example identify a detected zero crossing.
  • the inverter may be notified by the trigger of an event occurring at the interworking point.
  • the signal conditioning device 775 is via a
  • FIG. 8 shows an illustration of a connection of an inverter 100 to a sub-network according to an embodiment of the present invention. It is a three-phase connection of the inverter 100 to a three-phase sub-network with two single-phase loads 322, 822 and a measuring device 770 at the grid transfer point 324 to a network 326.
  • the grid transfer point 324 is optionally implemented with an electricity meter of the grid operator of the network 326.
  • the first load 322 is directly connected to the first output port 104 and the neutral N and the second load 822 is via a
  • Switching device 824 with the second output terminal 106 and the Neutral conductor N connected. Data connections are between the
  • Inverter 100 and the measuring device 770 realized.
  • FIG 9 shows an illustration of a connection of an inverter to a subnet according to an exemplary embodiment of the present invention.
  • the sub-network has a measuring device 770 at the network transfer point 324 to a network 326.
  • the grid transfer point 324 is optionally implemented with an electricity meter of the network operator of the network 326.
  • the consumer 322 is directly connected to the
  • Data connections 880, 777 are realized between the inverter 100, the load 322 and the measuring device 770.
  • Infeed power control described.
  • the aim is to feed with phase-selective current so that at a transfer point 324 of the current and thus the active and reactive power in all phases 104, 106, 108 can be independently controlled to a desired value. It is thus possible to regulate not only the sum of all phase powers, but also the power of each individual phase 104, 106, 108. As a result, different operating modes are possible.
  • a first operating mode is based on a regulation for minimum network load.
  • a state-of-the-art feed-in it happens that one phase feeds power into one network while another phase feeds power at the same time power is taken from the network.
  • the connected network must in this case absorb the power in one phase and make it available in another phase, which may be phase-selective
  • the inverter 100 distributes its output power to the individual phases 104, 106, 108 such that the current load on all phases 104, 106, 108 at the grid transfer point 324 is the same. Only when the maximum current of the inverter 100 is reached can the inverter 100 optionally supply the currents at
  • a second operating mode is based on pure self-consumption.
  • the inverter 100 can be configured so that it only feeds as much power as is consumed within the subnetwork to the transfer point. In this case, the inverter 100 feeds a maximum of the power that is consumed. As a result, no energy is fed into the supply network 326. An operation of the inverter 100 is therefore possible without a feed-in contract or EVU agreement, since no energy is fed into the network 326, but only the consumption is reduced.
  • intermediate solutions are also conceivable, where the power per phase 104, 106, 108 is limited to a value between 0 and the maximum possible feed power per phase. Analog can also be regulated on the power and not on the performance.
  • a third mode is based on a voltage controlled mode. An am
  • Feed-in node 324 heavily loaded phase is distinguished from the other phases 104, 106, 108 by a lower voltage by the voltage drop on the line. This is detected in the voltage-controlled mode by the inverter 100 and thereby generates a control signal which the feed rate in this phase compared to the other phases
  • the inverter 100 may reduce the feed-in power to this phase over the other phases 104, 106, 108. This is true for both
  • a fourth mode is based on a default by a network controller.
  • the feed-in power can be specified externally by a control signal for both reactive and active power. In one embodiment, this is either via an analog control signal or by transmitting a digital setpoint
  • the inverter may be powered by a communication unit, e.g. B. a switchable relay contact, a digital
  • information or an analog signal can drive different consumers 322, 822 on the individual phases 104, 106, 108, especially if this is favorable for increasing self-consumption or for other economic reasons.
  • This may, for example, be a lower load for the inverter 100 in order to reduce the power loss if the feed on the phases 104, 106, 108 becomes very uneven.
  • the control of the consumer 322, 822 can be carried out either directly via an interface or indirectly via a switching unit. For this purpose, the inverter 100 must know the assignment of the consumer 322, 822 to the phases 104, 106, 108.
  • Inverter 100 can turn on the consumer 322, 822 as a test and then the additional consumption of the consumer 322, 822 am
  • the inverter 100 is also in one
  • Embodiment which is mandatory for the setting of the aforementioned first and second modes of operation and for the others
  • the inverter 100 is provided with an accurate time receiver, e.g. B. a GPS receiver or a receiver of a synchronization signal, which is sent from the inverter, equipped to allow a time signal assignment of certain phases 104, 106, 108.
  • an accurate time receiver e.g. B. a GPS receiver or a receiver of a synchronization signal, which is sent from the inverter, equipped to allow a time signal assignment of certain phases 104, 106, 108.
  • the phase shift of a phase can be determined at this time signal and thus the relative assignment of the phases 104, 106, 108 to the terminal LI at the inverter in an absolute assignment of the phases 104, 106, 108, for example, to the phase designation at the grid transfer point 324 automatically determined.
  • An implementation of the network handoff point 324 may be described as follows. In order to set the corresponding operating strategy, it is necessary to install a current measuring device 770 at the grid transfer point 324, which can measure the phase shift between current and voltage of the phases 104, 106, 108 in a phase-selective manner in addition to current or power information.
  • the measuring device 770 is constructed such that it has a separate current sensor 771 for each phase 104, 106, 108. This current sensor 771 supplies either an averaged value of the
  • z. B the RMS value together with a time information to the inverter 100 or instantaneous values to the inverter 100.
  • the time information z. B. in the form of a trigger signal or an accurate
  • Timestamp for example, from a GPS receiver or a receiver of a synchronization signal sent by the inverter, contains a reference time of a phase. This can be, for example, the zero crossing with a positive slope of the current signal.
  • the phase is either assigned to the inverter 100 manually or the inverter 100 can this
  • Inverter 100 are clearly assigned to the phase connections at the grid transfer point.
  • Reference power can be calculated when the voltage at the
  • Terminals 104, 106, 108 is used as the voltage value.
  • Inverter terminal 104, 106, 108 can either be neglected or estimated.
  • the feed current of the phase measured by the inverter 100 itself at the inverter 100 may be used in combination with the line resistive and inductive resistance.
  • the measuring device 770 has both a current sensor 771 and a voltage sensor 773 per phase 104, 106, 108.
  • the measuring device 770 can determine the phase shift directly by the voltage sensor 773 and provide this information to the inverter 100 either as angle information or as active and reactive component of the current or the power, for example via the
  • the assignment of the phases at the transfer point 324 to the phases at the connection terminals 104, 106, 108 at the inverter 100 can take place either via time information from a trigger signal of the voltage, e.g. B. Zero crossing in case of positive change, or alternatively be assigned automatically by a load test of the inverter 100 with feedback of the phase currents.
  • a trigger signal of the voltage e.g. B. Zero crossing in case of positive change
  • a load test of the inverter 100 with feedback of the phase currents.
  • voltage and currents as actual values to the
  • Inverter 100 to transmit. Then an assignment directly from the voltage information is possible, since the voltages are approximately synchronous and equal in size by the parallel connection of the measuring device 770 with the inverter 100.
  • the installer Deutschenmisst the line, the lines are coded (color or text) or consist of traceable individual wires.
  • the lines are coded (color or text) or consist of traceable individual wires.
  • Battery system on the DC side of the inverter 100 the active power to be delivered no longer directly dependent on a generator, especially a PV generator, but should be freely adjustable assuming a sufficiently large capacity and within the performance limits of the inverter. Will the battery system be on the AC side of the inverter
  • the power output and recording are controlled by the inverter 100 via a communication link.
  • the embodiments described and shown in the figures are chosen only by way of example. Different embodiments may be combined together or in relation to individual features. Also, an embodiment can be supplemented by features of another embodiment.
  • an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, this is to be read such that the Embodiment according to an embodiment, both the first feature and the second feature and according to another embodiment, either only the first feature or only the second feature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

L'invention concerne un procédé permettant d'alimenter un réseau de tension alternative en énergie électrique au moyen d'un onduleur (100), qui comporte au moins une interface d'entrée (102) et une pluralité d'interfaces de sortie (104, 106, 108) servant à fournir l'énergie électrique. Le procédé comprend une étape consistant à déterminer un nombre de phases d'alimentation nécessaire pour le réseau de tension alternative, et une étape consistant à fournir l'énergie électrique à un nombre d'interfaces de sortie (104, 106, 108) de la pluralité d'interfaces de sortie (104, 106, 108), lequel nombre correspond au nombre de phases d'alimentation, au moyen d'une tension continue présente au niveau de la ou des interfaces d'entrée (102).
PCT/EP2014/078817 2014-01-13 2014-12-19 Procédé et onduleur permettant d'alimenter un réseau de tension alternative en énergie électrique Ceased WO2015104177A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014200412.8 2014-01-13
DE102014200412.8A DE102014200412A1 (de) 2014-01-13 2014-01-13 Verfahren und Wechselrichter zum Einspeisen elektrischer Energie in ein Wechselspannungsnetz

Publications (2)

Publication Number Publication Date
WO2015104177A2 true WO2015104177A2 (fr) 2015-07-16
WO2015104177A3 WO2015104177A3 (fr) 2015-10-01

Family

ID=52339112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/078817 Ceased WO2015104177A2 (fr) 2014-01-13 2014-12-19 Procédé et onduleur permettant d'alimenter un réseau de tension alternative en énergie électrique

Country Status (2)

Country Link
DE (1) DE102014200412A1 (fr)
WO (1) WO2015104177A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105634023A (zh) * 2016-02-03 2016-06-01 国家电网公司 一种电力系统生产运行方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4120500A1 (fr) 2021-07-14 2023-01-18 FRONIUS INTERNATIONAL GmbH Procédé de régulation de la taille du réseau électrique dans un réseau d'alimentation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7352549B1 (en) * 2004-11-05 2008-04-01 Sma Technologie Ag Method of automatically recognizing an electrical system
DE102005008809A1 (de) * 2005-02-26 2006-10-12 Kostal Industrie Elektrik Gmbh Wechselrichter
DE102006024482A1 (de) * 2006-05-26 2007-12-06 Powerlynx A/S Verfahren zur Steuerung eines Leistungswandlers und elektrisches System, das dieses Verfahren anwendet
EP2346134B1 (fr) * 2010-01-14 2017-09-27 Siemens Aktiengesellschaft Dispositif de convertisseur et procédé de conversion d'alimentation électrique
EP2348597A1 (fr) * 2010-01-20 2011-07-27 SMA Solar Technology AG Adaptation de prestations partielles s'écoulant par le biais de chaque phase d'un courant alternatif multiphase
WO2011139833A2 (fr) * 2010-04-29 2011-11-10 Enphase Energy, Inc. Procédé et appareil pour production d'énergie répartie
DE102011000394A1 (de) * 2011-01-28 2012-08-02 Sma Solar Technology Ag Lokale Energieversorgungsanlage
DE102011085676A1 (de) * 2011-11-03 2013-05-08 Robert Bosch Gmbh Einspeiseeinheit und Stromerzeugungs- und Verbrauchsanordnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105634023A (zh) * 2016-02-03 2016-06-01 国家电网公司 一种电力系统生产运行方法

Also Published As

Publication number Publication date
WO2015104177A3 (fr) 2015-10-01
DE102014200412A1 (de) 2015-07-16

Similar Documents

Publication Publication Date Title
EP2009763B1 (fr) Dispositif d'alimentation en courant
DE102012104560B4 (de) Erkennung der Stringkonfiguration für einen Multistring-Wechselrichter
DE102011078047A1 (de) Vorrichtung zur Steuerung der Belastung der Phasen eines dreiphasigen Energienetzes
EP2924839B1 (fr) Régime de secours monophasé d'un onduleur triphasé et onduleur correspondant
EP3345294B1 (fr) Procédé de fonctionnement d'un onduleur et onduleur
DE10296505T5 (de) Steuerung mehrerer Brennstoffzellenkraftwerke an einem Einsatzort zur Schaffung eines dezentralen Betriebsmittels in einem Energieversorgungsnetz
EP3245702B1 (fr) Procédé pour faire fonctionner un consommateur ou générateur électrique dans un réseau d'abonnés et matrice de commutation
EP2919352B1 (fr) Procédé de fonctionnement d'un usager électrique, d'un point de mesure électrique sur un réseau d'usager électrique et usager électrique et point de mesure électrique
DE102011054002A1 (de) Dezentrale Energieerzeugungsanlage mit Einrichtung und Verfahren zur Inselnetzerkennung
DE102018124124B3 (de) Verfahren und Vorrichtung zur Identifikation einer Zuordnung von Phasenleitungen zu Anschlüssen eines schieflastfähigen elektrischen Gerätes
EP2601534A2 (fr) Détection d'une quantité d'énergie d'alimentation d'une installation photovoltaïque, qui était éventuellement présente, mais qui en fait n'a pas été fournie
WO2016207026A1 (fr) Procédé de stabilisation d'un réseau électrique alternatif
EP2849019A1 (fr) Procédé et appareil de commande destinés à limiter la charge électrique dans un branchement d'un réseau électrique
DE102012100673A1 (de) Vorrichtung zur elektrischen Energieeinspeisung aus einer dezentralen Eigenerzeugeranlage in ein Stromnetz
DE102014001537A1 (de) Optimiertes Gebäudetechnik-Energiemanagementsystem
EP2071693A2 (fr) Procédé et circuit destinés à la commande de l'alimentation en énergie de plusieurs onduleurs monophasés dans un réseau multiphases
WO2015104177A2 (fr) Procédé et onduleur permettant d'alimenter un réseau de tension alternative en énergie électrique
EP2960664B1 (fr) Système d'enregistrement de puissances et de quantités d'énergie dans des conducteurs
EP2426431A2 (fr) Système de suivi en fonction de la position du soleil de modules de cellules solaires
WO2011033027A2 (fr) Circuit doté d'une partie onduleur comprenant une unité de commande centrale
DE102008027887A1 (de) Verfahren und Schaltungsanordnung zum Steuern der Energieeinspeisung von mehreren einphasigen Wechselrichtern in ein Mehrphasennetz
WO2020069782A1 (fr) Commande d'une zone de réseau local pour réaliser une communauté énergétique locale avec programme
DE102009035399A1 (de) Schaltungsanordnung zur Stromlenkung
DE102011014468B4 (de) Phasenselektives VAr - Management
EP4395092A1 (fr) Dispositif de raccordement pour fournir de l'énergie électrique, système, procédé et produit programme informatique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14825148

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14825148

Country of ref document: EP

Kind code of ref document: A2