EP2692049A2 - Ensemble convertisseur - Google Patents

Ensemble convertisseur

Info

Publication number
EP2692049A2
EP2692049A2 EP12721254.6A EP12721254A EP2692049A2 EP 2692049 A2 EP2692049 A2 EP 2692049A2 EP 12721254 A EP12721254 A EP 12721254A EP 2692049 A2 EP2692049 A2 EP 2692049A2
Authority
EP
European Patent Office
Prior art keywords
energy
converter arrangement
voltage
filter
modules
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.)
Withdrawn
Application number
EP12721254.6A
Other languages
German (de)
English (en)
Inventor
Dieter Fischer
Alexander Hahn
Uwe Krebs
Holger Leu
Jean-Philippe MACARY
Andreja Rasic
Wolfgang Weydanz
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 AG
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP2692049A2 publication Critical patent/EP2692049A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • H02M7/66—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal
    • H02M7/68—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters
    • H02M7/72—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the invention relates to a converter arrangement having at least one alternating voltage terminal to which can be fed or removed a roller ⁇ current, in and at least one DC voltage connection, to which is fed a direct current or removed.
  • Such an inverter arrangement is known from the publication "An innovative Modular Multilevel Converter Topology Suitable for Wide Power Range" (A. Lesnicar and R. Marquardt, 2003 IEEE Bologna Power Tech Conference, June 23-26, 2003, Bologna, Italy). known.
  • This previously known converter arrangement is a so-called Marquardt converter arrangement, which comprises at least two series circuits connected in parallel, the outer terminals of which form DC voltage connections of the converter arrangement.
  • Each of the parallel-connected series circuits each comprises at least two series-connected sub-modules, each comprising at least two switches and a capacitor.
  • the voltage level at the DC voltage connections can be adjusted.
  • the invention has for its object to provide a Umrichteran ⁇ order, which is particularly universally applicable.
  • a significant advantage of the converter according to the invention is that they - in contrast to known Restaurant ⁇ Umrichteran angelen - comprises one or more additional connections to which stored energy or can be temporarily stored. This makes it possible to use the Umrich ⁇ teran Aunt particularly versatile in technical systems.
  • the Umrich ⁇ teran Aunt invention for distributing electrical energy ie as a kind of energy distribution system or as part of a complex energy distribution system, are used, with an energy buffering is possible.
  • the sub-modules of the converter arrangement OF INVENTION ⁇ to the invention can be spatially distributed, for example, over an entire urban area, and local sampling and / or the feed points Energyverteilstrom for removal and / or for feeding electric energy form.
  • the inventively provided filter between the energy storage and the capacitor (module capacitor) can be achieved in an advantageous manner that the energy storage is effectively protected from voltage fluctuations on the capacitor, which are indirectly or directly caused by the voltage applied to the AC voltage terminal of the inverter voltage, resulting in significantly increase the life of the energy store.
  • the filter is designed such that it attenuates least ⁇ to the fundamental frequency of the applied AC voltage at the AC voltage terminal.
  • the filter can attenuate at least the first and / or second harmonic of the alternating voltage applied to the AC voltage terminal.
  • the filter is preferably a Wegpassfil ⁇ ter or a band-pass filter whose cutoff frequency and upper limit frequency is lower than the fundamental frequency of the AC voltage terminal present at the alternating voltage.
  • the energy storage of both the fundamental frequency and the harmonics of the voltage applied to the AC voltage terminal AC voltage and of the Protected switching frequency of the voltage applied to the switches of the respective switching module control voltages are rich in Kilohertzbe-.
  • the filter can be an active or a passive filter.
  • a passive filter may comprise, for example, a simple throttle or a parallel resonant circuit (trap circuit) having corresponding ⁇ bandwidth.
  • An active filter can, for example, be designed as a PFC filter (power factor correction filter) with active components. Perhaps several of these or comparable filter units or a combination of different filter topologies are advantageous.
  • the energy storage capacity of the energy accumulator is preferably at least 100 times the Energy Grandeka ⁇ capacity of the capacitor, to one on the energy storage capacitor to allow significantly beyond energy storage.
  • the energy store is preferably an electrochemical energy store, in particular an accumulator.
  • each of the pa ⁇ rallel-connected series circuits each having connection an intermediate which is in terms of potential between two Operamo ⁇ dulen the respective series circuit, and each intermediate connection each forms one of the AC terminals.
  • the inverter arrangement operates in multi-phase, z. B. three-phase, and comprises per phase at least one Rei ⁇ henscrien with at least two connected in series submodules.
  • the invention also relates to a power distribution system for supplying a ⁇ coverage area with electrical power, wherein the Energyverteilstrom/2017in- least one connection for supplying electrical energy and a plurality of ports for withdrawal of the applied electrical energy.
  • the submodules are locally distributed via the supply area to be supplied by the energy distribution system with electrical energy. This makes it possible to provide relatively large coverage areas at ⁇ play as all urban areas, with the help of sub-modules with electrical energy.
  • a wind farm with a plurality of wind generators and a converter arrangement - as described above - is considered.
  • the wind generators are preferably each connected to a submodule of the converter arrangement.
  • a method of operating a converter arrangement as described above is also considered.
  • electrical energy is taken from the submodule and buffered or cached electrical energy is fed into the submodule at a connection of at least one of the submodules.
  • the energy storage devices are preferably Li-ion batteries, Li-iron phosphate batteries, Li-polymer batteries, Pb batteries, NiCd batteries, NiMH batteries, high-temperature batteries, NaS batteries, ZEBRA batteries, Sodium-air batteries, storage capacitors, double-layer capacitors and / or hybrid capacitors.
  • the energy storage may contain batteries in the form of battery packs, each comprising in series or in parallel maral ⁇ preparing single cells.
  • a battery management is integrated in the battery pack, which allows a si ⁇ chere operation of the battery pack in a predetermined temperature and Tempe ⁇ voltage window. If predetermined switch-off conditions are reached in such a case (energy store fully charged or discharged, or maximum or minimum voltage of the battery pack achieved), so far ⁇ rer energy exchange between the energy storage and inverter arrangement via a corresponding control of the switches of the sub-modules of the inverter For this purpose, the converter arrangement must only be operated as a standard Marquard module.
  • the one or more energy storage are each equipped with a monitoring ⁇ electronics that communicate with a parent unit.
  • the higher-level unit can control the charging and / or discharging of the energy store, depending on the energy situation of the converter arrangement.
  • the energy storage are controlled with a control algorithm till- len to opti- the storage process to op ⁇ .
  • the energy storage are equipped with a preferably self-sufficient operating symmetry circuit.
  • Figure 1 shows an embodiment of an inventive
  • Figure 2 shows an embodiment of an inventive
  • FIG. 1 shows an exemplary embodiment of a three-phase converter arrangement 10. This includes change ⁇ voltage terminals W10 for feeding AC power. In addition, it is equipped with a DC side G10 out ⁇ equips that holds two DC voltage connections GLOA and glob to ⁇ .
  • the converter arrangement 10 has three series circuits R1, R2 and R3 connected in parallel, whose external terminals RH, R21 and R31 are connected to the DC voltage terminal GlOa in FIG Connection stand.
  • the outer terminals R12, R22 and R32 are connected to the DC voltage terminal GlOb the Gleichspan ⁇ tion side G10 in combination. In other words, therefore, form the outer terminals of the three series circuits Rl, R2 and R3, the DC voltage side G10 of the inverter assembly 10th
  • Each of the three series circuits Rl, R2 and R3 is each equipped with six series-connected sub-modules, and two T Indukti ⁇ vticianen D.
  • an intermediate connection Z which lies potential- wise between the three upper submodules in FIG. 1 and the three lower submodules in FIG. 1 and forms one of the three AC voltage connections W10 of the converter arrangement 10.
  • each of the partial modules T has two each
  • a filter FI and an energy storage ES can be connected, as indicated in the dashed circle in Figure 1.
  • the energy storage ES is used for storing and / or buffering of energy, which - with appropriate control of the switches Sl and S2 - is taken over the respective sub-module T from the inverter assembly 10.
  • the energy stored in the energy store can at any time be fed back into the converter arrangement 10 via the respective submodule T by the switches S1 and S2 being driven accordingly.
  • For driving the switches Sl and S2 is preferably a custom module or a central control device see ⁇ provided, which is not shown for clarity in FIG.
  • the switches Sl and S2 entspre ⁇ accordingly driven such that a flow of energy in the direction of the switches Sl and S2 are carried out; is to be taken from the energy store ES electric power, so the sound ⁇ ter Sl and S2 are driven in accordance with such a manner that a direction of energy flow in the energy storage takes place.
  • the filter FI is preferably designed such that it attenuates at least the fundamental frequency of the AC voltage applied to the AC voltage terminal and its first and second harmonics.
  • the filter FI thus protects the supplied arrange ⁇ th power storage before a periodic charging and discharging of the frequency (or a multiple thereof) of the present at the alternating voltage terminal W10 AC voltage.
  • it allows the converter arrangement 10 on ⁇ due to the configuration of the component modules T, refer to the terminal AI of each sub-module T electric energy or to feed electric energy.
  • the converter arrangement 10 can thus be used as an energy distribution system.
  • a filter FI and a Energyspei ⁇ cher ES are connected to the terminal AI, can furthermore an energy storage, in particular an intermediate storage of energy, take place.
  • FIG. 2 shows an exemplary embodiment of a Energyverteilstrom 100 is shown by way of example, which is formed by an order ⁇ inverter assembly 10, as explained in connection with Figure 1.
  • the energy distribution system 100 has a connection E100 for supplying electrical energy.
  • This terminal E100 is in the embodiment according to the figure 2 by the three AC voltage terminals WIO the inverter assembly 10 is formed.
  • the energy distribution system 100 moreover has a multiplicity of connections A101 to A118 which are suitable for the removal and / or feeding and / or storage / buffering of electrical energy.
  • These ports A101 to A118 are divided spatially comparable over a large local versor ⁇ confinement region VG, such as an urban area.
  • the terminals A107, A108 and A109 are arranged in a small building complex 210 within Ver ⁇ sorgungs capables VG.
  • the terminals AHO, Alll and A112 belong to a power plant 220, which supplies the local supply area VG with electrical energy.
  • At the ⁇ circuits A113 to A118 are assigned to a large building complex 230, which is also located within theéessge ⁇ Biets VG.
  • Each of said ports A101 to A118 of Energyverteilstrom 100 is formed by connecting one of the AI modules Partmo ⁇ T (see FIG. 1), as has been explained in connection with the Figure 1 in detail. In other words, it is possible to connect to each of the terminals A101 to
  • energy stores ES with individual filters FI can be connected to one or more terminals A101 to A118, as explained in connection with FIG. For reasons of clarity, energy stores with individual filters are not shown in FIG.
  • the actuation of the switches S 1 and S 2 of the submodules T is preferably carried out by a central control station which, for the sake of clarity, is not shown in FIGS. 1 and 2.
  • a central control station which, for the sake of clarity, is not shown in FIGS. 1 and 2.
  • Houses in a narrower or wider urban area are connected via the sub-modules to the medium or high voltage and supplied with low voltage.
  • a coupling of several converter arrangements or several energy distribution systems is possible.
  • various power distribution systems 100 as shown in FIG. 2, can be connected to one another via their AC voltage connections W10.
  • the advantage here is that there is no significant increase in the short-circuit power.
  • the Umrichteran extract or the energy distribution can be formed thereby verkop ⁇ pelt using the DC voltage connections to one another.
  • a central switchgear installed, which can control the overall arrangement.
  • the converter arrangement described in connection with FIGS. 1 and 2 can also be used as feed-in inverters in low, medium, high and very high voltage networks
  • integrated energy storage can be used.
  • the converter arrangement in mains (short) couplings with integrated energy storage.
  • the inverter arrangement as a buffer for sensitive
  • Networks and / or processes are used, for example, to ensure a supply of a subnet whose primary feed has failed; so can with the described converter z.
  • critical processes or processes can be safely transferred to a defined state.
  • the converter arrangement can also be used for shore connections with optional buffering and for solar inverters with integrated energy storage.
  • the converter arrangement can be used as an energy storage / clutch in an electric or hybrid means of transport:
  • charging can take place by connecting the AC voltage connection of the converter arrangement to an AC voltage network; a movement of the means of transport can be ensured by the change ⁇ voltage connection is connected to a drive motor; and a Nutzpuff ceremonies can be done by energy is fed back into the AC mains from the energy storage.
  • the converter arrangement can be described as a central La ⁇ destation for energy storage, such as batteries, use.
  • a switchable galvanic isolation is present at the charging station in order to enable an exchange of individual battery packs of the energy store (s).
  • the converter arrangement 10 according to Figure 1 as well as the Energyverteilstrom 100 according to Figure 2 can also be used to couple who ⁇ , wind power turbines of wind farms with each other.
  • one wind turbine can be connected to some submodules of the converter arrangement 10 or of the energy distribution system 100 according to FIGS. 1 and 2.
  • Such a connection can be made via the turbine's own AC / DC converter, which is connected to the capacitor C of the respective submodule T.
  • the filter outlay when feeding in the electrical energy generated by the wind turbines can be kept very small, so that converters with a very simple topology and very simple valves (for example in the form of thyristor converters) can be used as turbine-specific AC / DC converters are.
  • a diode rectifier can be used.
  • no fixed feed frequency must be specified or maintained, because each wind turbine can be operated at its own frequency. It is possible in a very simple manner, ERS single wind turbines on failure ⁇ throw, as the sub-modules can operate independently of the operating points of the individual generators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Inverter Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Rectifiers (AREA)

Abstract

La présente invention concerne entre autres un ensemble convertisseur (10) comportant au moins une borne de tension alternative (W10) par laquelle un courant alternatif peut être injecté ou prélevé, et au moins une borne de tension continue (G10a, G10b) par laquelle un courant continu peut être injecté ou prélevé, ledit ensemble convertisseur comprenant au moins deux montages en série (R1, R2, R3) montés en parallèle dont les bornes externes (R11, R21, R31, R12, R22, R32) forment les bornes de tension continue (G10a, G10b) de l'ensemble convertisseur et chacun des montages en série montés en parallèle comportant au moins deux modules partiels (T) montés en série, qui comportent chacun au moins deux interrupteurs (S) et un condensateur (C). Selon l'invention, un accumulateur d'énergie se trouve en liaison avec le condensateur d'au moins un des modules partiels, un filtre étant électriquement connecté entre le condensateur et l'accumulateur d'énergie.
EP12721254.6A 2011-05-18 2012-05-10 Ensemble convertisseur Withdrawn EP2692049A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011076039A DE102011076039A1 (de) 2011-05-18 2011-05-18 Umrichteranordnung
PCT/EP2012/058606 WO2012156261A2 (fr) 2011-05-18 2012-05-10 Ensemble convertisseur

Publications (1)

Publication Number Publication Date
EP2692049A2 true EP2692049A2 (fr) 2014-02-05

Family

ID=46085598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12721254.6A Withdrawn EP2692049A2 (fr) 2011-05-18 2012-05-10 Ensemble convertisseur

Country Status (5)

Country Link
US (1) US9318979B2 (fr)
EP (1) EP2692049A2 (fr)
CA (1) CA2836366A1 (fr)
DE (1) DE102011076039A1 (fr)
WO (1) WO2012156261A2 (fr)

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Also Published As

Publication number Publication date
WO2012156261A3 (fr) 2013-12-27
US9318979B2 (en) 2016-04-19
DE102011076039A1 (de) 2012-11-22
CA2836366A1 (fr) 2012-11-22
US20140104899A1 (en) 2014-04-17
WO2012156261A2 (fr) 2012-11-22

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