WO2011000687A1 - Configuration of a multi-step converter of the electrical power supply - Google Patents

Configuration of a multi-step converter of the electrical power supply Download PDF

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Publication number
WO2011000687A1
WO2011000687A1 PCT/EP2010/058362 EP2010058362W WO2011000687A1 WO 2011000687 A1 WO2011000687 A1 WO 2011000687A1 EP 2010058362 W EP2010058362 W EP 2010058362W WO 2011000687 A1 WO2011000687 A1 WO 2011000687A1
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Prior art keywords
row
submodules
submodule
voltage
rows
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PCT/EP2010/058362
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German (de)
French (fr)
Inventor
Jörg DORN
Thomas KÜBEL
Thomas Westerweller
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Siemens Aktiengesellschaft
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Publication of WO2011000687A1 publication Critical patent/WO2011000687A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/10—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
    • H01L25/11—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L29/00
    • H01L25/112—Mixed assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/10—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/10—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
    • H01L25/11—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L29/00
    • H01L25/117—Stacked arrangements of 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the invention relates to a converter for the conversion of an electrical variable such as voltage or current in the field of electric power transmission and distribution with a series circuit of bipolar submodules, each having a power semiconductor circuit and an energy storage, and with a support frame for the isolated holding the submodules, so in that the submodules are arranged side by side in at least two rows stacked one above the other, wherein a diagram is provided for the electrical connection of the submodules.
  • DE 101 03 031 describes a multi- stage converter which consists of a series connection of bipolar submodules.
  • Each submodule has an energy storage and a power semiconductor circuit, each consisting of two power semiconductors.
  • the two power semiconductors can be controlled such that either the voltage dropping across the energy store of the respective submodule or else a zero voltage can be generated at the two output terminals of the respective submodule.
  • the series connection of the submodules forms one of the
  • Converter valves of the inverter Each drop across the current Rich ⁇ terventilen voltage can be set stepwise by means of the submodules, the height of the voltage levels, the voltage dropped across the capacitor of a submodule voltage.
  • a converter In the area of energy transmission and power distribution, such a converter is designed for voltages of several hundred kilovolts. From the- For this reason, such a multi-stage inverter can therefore have several hundred of such submodules.
  • the support frame 1 has a support frame 2, shown only schematically, made of an insulating material.
  • the support frame 2 via support columns forming support 3.
  • the submodules 4 are arranged side by side in the support frame, with rows 5, 6 and 7 are formed, which are stacked one above the other.
  • the different rows 5, 6 and 7 are spaced apart from one another by the support beams 3, the bipolar submodules 4 being electrically connected to one another via a busbar 8.
  • the voltage dropped across a submodule is, for example, 1 kV.
  • a voltage of, for example, 200 kV is applied to the submodule 5i arranged at the top end in FIG. 1 in the top row 5, the voltage at the left submodule of the same row 524 has dropped to 176 kV. This simultaneously corresponds to the input voltage of the submodule 624.
  • the voltage at the submodule 6 1 is then 152 kV.
  • the distance, al ⁇ so the height of the support beam 3, is to be chosen so large that a sufficiently high dielectric strength between the superimposed rows 5 and 6 is given. It is assumed that a voltage difference of 48 kV.
  • the object of the invention is to provide a converter of the type mentioned, which is as compact and therefore inexpensive, at the same time a sufficient dielectric strength is provided.
  • the invention achieves this object by virtue of a submodule 524 arranged on the first outermost edge of a first row being connected to a submodule 6i of a second row 6 aligned above or below the first row and facing away from the first edge of the first row 5 second outermost edge of the second row 6 is arranged.
  • the submodules are Z-shaped strigient.
  • the outermost submodule of a row is therefore not connected, as in the prior art, to the first submodule of the same side of the second row lying vertically above or below the first row.
  • the submodule arranged in a row on the left-hand side for example, is connected to the submodule of the underlying row on the right-hand side, the two rows, in which the submodules connected to one another are arranged, extending perpendicularly one above the other, ie being aligned with one another. In this way, the falling voltage between the rows is reduced.
  • the holding frame can therefore be made more compact. This also has an advantageous effect on the height of the entire system.
  • the sub-modules are held in the support ⁇ scaffolding course isolated.
  • the each other Shunted submodules form a phase module which can be connected to only one phase of an AC voltage network.
  • corresponding submodules are provided with R-shaped interconnection.
  • the number of submodules of a plane is greater than 24.
  • the number of planes is advantageously greater than 2.
  • the rows of side by side angeord ⁇ Neten submodules are spaced apart by electrically insulating support beams.
  • Electric support beams are usually provided with ribs, so that an increased Kriechfestig ⁇ speed is provided. In this way, the withstand voltage between the rows is further increased.
  • FIG. 1 shows a phase module of an inverter according to FIG.
  • FIG. 2 shows an exemplary embodiment of a phase module of the converter 9 according to the invention, which has a support frame 2 made of insulating material.
  • the support frame 2 again has support columns 3 serving as support columns, which separate rows 5, 6 and 7 from side by side arranged bipolar submodules 4.
  • each submodule has an energy store, such as a capacitor, as well as a power semiconductor circuit connected to the capacitor, so that either the voltage drop across the capacitor is applied to the capacitor
  • FIG. 2 shows, as in FIG. 1, only one phase module of an inverter 1, which, however, consists of a total of three phase modules which, for example, are arranged behind the phase module shown in the figures and thus concealed.
  • the Phasenmo ⁇ modules are constructed identically and each have a AC voltage connection for a phase of the connected AC voltage network.
  • each Pha ⁇ senmodul has two differently polarized DC voltage connections.
  • the electrical connection of the vertically superposed rows of a phase module is shown.
  • the input voltage at the submodule 5i is 200 kV.
  • the output ⁇ voltage of the submodule 524 is then 176 kV.
  • submodule 524 is connected to submodule 61.
  • a submodule arranged at the first end of a first row 5 is connected to the submodule of the vertically lower second row of a second row.
  • Between the rows 5 and 6 or 6 and 7 respectively only a voltage difference of 24 kV maxi ⁇ times drops.

Abstract

The invention relates to a converter (9) for converting an electrical variable, for example, voltage or current, in the field of electrical energy transmission, and distribution by way of a series connection of bipolar submodules (4), each having a power semiconductor circuit and an energy storage, and having a supporting framework (2) for the isolated support of the submodules (4), so that the submodules are arranged parallel to one another in at least two rows (5, 6, 70) that are stacked on top of one another, wherein a busbar system (8) for electrically connecting the submodules is provided, and said converter being as compact as possible, and thus cost-effective, wherein a sufficient dielectric strength is provided at the same time. According to the invention, a submodule (524) arranged at the first outer edge of a first row (5) is connected to a submodule (61) of the second row (6) located above or below the first row, which is arranged on the second outer edge of the second row (6) facing away from the first edge of the first row (5).

Description

Beschreibung description
Aufbau eines mehrstufigen Umrichters der Elektroenergieversorgung Construction of a multi-level converter of the electric power supply
Die Erfindung betrifft einen Umrichter zur Umrichtung einer elektrischen Größe wie Spannung oder Strom im Bereich der Elektroenergieübertragung und -Verteilung mit einer Reihenschaltung von bipolaren Submodulen, die jeweils eine Leis- tungshalbleiterschaltung und einen Energiespeicher aufweisen, und mit einem Traggerüst zum isolierten Halten der Submodule, so dass die Submodule nebeneinander in wenigstens zwei übereinander gestapelten Reihen angeordnet sind, wobei eine Ver- schienung zur elektrischen Verbindung der Submodule vorgese- hen ist. The invention relates to a converter for the conversion of an electrical variable such as voltage or current in the field of electric power transmission and distribution with a series circuit of bipolar submodules, each having a power semiconductor circuit and an energy storage, and with a support frame for the isolated holding the submodules, so in that the submodules are arranged side by side in at least two rows stacked one above the other, wherein a diagram is provided for the electrical connection of the submodules.
Ein solcher Umrichter ist aus dem Stand der Technik bereits bekannt. So ist beispielsweise in der DE 101 03 031 ein mehr¬ stufiger Umrichter beschrieben, der aus einer Reihenschaltung von bipolaren Submodulen besteht. Jedes Submodul verfügt über einen Energiespeicher sowie über eine Leistungshalbleiterschaltung, die jeweils aus zwei Leistungshalbleitern besteht. Die beiden Leistungshalbleiter können so angesteuert werden, dass entweder die an dem Energiespeicher des jeweiligen Sub- moduls abfallende Spannung oder aber eine Nullspannung an den beiden Ausgangsklemmen des jeweiligen Submoduls erzeugbar ist. Die Reihenschaltung der Submodule bildet eines der Such a converter is already known from the prior art. For example, DE 101 03 031 describes a multi- stage converter which consists of a series connection of bipolar submodules. Each submodule has an energy storage and a power semiconductor circuit, each consisting of two power semiconductors. The two power semiconductors can be controlled such that either the voltage dropping across the energy store of the respective submodule or else a zero voltage can be generated at the two output terminals of the respective submodule. The series connection of the submodules forms one of the
Stromrichterventile des Umrichters aus. Die an den Stromrich¬ terventilen jeweils abfallende Spannung kann mit Hilfe der Submodule stufenweise eingestellt werden, wobei die Höhe der Spannungsstufen, der an dem Kondensator eines Submoduls abfallenden Spannung entspricht. Im Bereich der Energieübertragung und Energieverteilung ist ein solcher Umrichter für Spannungen von mehreren hundert Kilovolt ausgelegt. Aus die- sem Grunde kann ein solcher mehrstufiger Umrichter daher mehrere hundert von solchen Submodule aufweisen. Converter valves of the inverter. Each drop across the current Rich ¬ terventilen voltage can be set stepwise by means of the submodules, the height of the voltage levels, the voltage dropped across the capacitor of a submodule voltage. In the area of energy transmission and power distribution, such a converter is designed for voltages of several hundred kilovolts. From the- For this reason, such a multi-stage inverter can therefore have several hundred of such submodules.
Zur Halterung der Submodule dient in der Regel ein Tragge- rüst. Ein gemäß dem Stand der Technik eingesetztes Traggerüst ist in Figur 1 gezeigt. Das Traggerüst 1 weist einen nur schematisch dargestellten Tragrahmen 2 aus einem isolierenden Material auf. Darüber hinaus verfügt der Tragrahmen 2 über Tragsäulen ausbildende Stützträger 3. Die Submodule 4 sind in den Tragrahmen nebeneinander liegend angeordnet, wobei Reihen 5, 6 und 7 ausgebildet sind, die stapelweise übereinander liegen. Die unterschiedlichen Reihen 5, 6 und 7 sind durch die Stützträger 3 voneinander beabstandet, wobei die bipolaren Submodule 4 über eine Verschienung 8 elektrisch miteinan- der verbunden sind. Die an einem Submodul abfallende Spannung beträgt beispielsweise 1 kV. In jeder Reihe sind 24 Submodule angeordnet. Liegt an dem in Figur 1 in der obersten Reihe 5 am rechten Ende angeordneten Submodul 5i eine Spannung von beispielsweise 200 kV an, ist die Spannung am linken Submodul der gleichen Reihe 524 auf 176 kV abgefallen. Dies entspricht gleichzeitig der Eingangsspannung des Submoduls 624. Die Spannung am Submodul 61 beträgt dann 152 kV. Der Abstand, al¬ so die Höhe der Stützträger 3, ist so groß zu wählen, dass eine ausreichend hohe Spannungsfestigkeit zwischen den über- einander liegenden Reihen 5 und 6 gegeben ist. Dabei ist von einer Spannungsdifferenz von 48 kV auszugehen. As a rule, a supporting framework is used to hold the submodules. A support framework used according to the prior art is shown in FIG. The support frame 1 has a support frame 2, shown only schematically, made of an insulating material. In addition, the support frame 2 via support columns forming support 3. The submodules 4 are arranged side by side in the support frame, with rows 5, 6 and 7 are formed, which are stacked one above the other. The different rows 5, 6 and 7 are spaced apart from one another by the support beams 3, the bipolar submodules 4 being electrically connected to one another via a busbar 8. The voltage dropped across a submodule is, for example, 1 kV. There are 24 submodules in each row. If a voltage of, for example, 200 kV is applied to the submodule 5i arranged at the top end in FIG. 1 in the top row 5, the voltage at the left submodule of the same row 524 has dropped to 176 kV. This simultaneously corresponds to the input voltage of the submodule 624. The voltage at the submodule 6 1 is then 152 kV. The distance, al ¬ so the height of the support beam 3, is to be chosen so large that a sufficiently high dielectric strength between the superimposed rows 5 and 6 is given. It is assumed that a voltage difference of 48 kV.
Ein weiterer mehrstufiger Umrichter ist aus der US 5,642,275 bekannt. Der dort beschriebene Umrichter weist ebenfalls Stromrichterventile mit einer Reihenschaltung und bipolare Submodule auf. Die Submodule weisen jeweils einen Energiespeicher sowie eine Leistungshalbleiterschaltung auf, die jedoch dort aus vier Leistungshalbleitern bestehen, die unter Ausbildung einer Vollbrücke mit dem Energiespeicher verschal¬ tet sind. Another multi-stage converter is known from US 5,642,275. The inverter described there also has converter valves with a series connection and bipolar submodules. The submodules each have an energy store and a power semiconductor circuit, which, however, there consist of four power semiconductors under Forming a full bridge with the energy storage verschal ¬ tet are.
Aufgabe der Erfindung ist es, einen Umrichter der eingangs genannten Art bereitzustellen, der möglichst kompakt und daher kostengünstig ist, wobei gleichzeitig eine ausreichende Spannungsfestigkeit bereitgestellt ist. The object of the invention is to provide a converter of the type mentioned, which is as compact and therefore inexpensive, at the same time a sufficient dielectric strength is provided.
Die Erfindung löst diese Aufgabe dadurch, dass ein am ersten äußersten Rand einer ersten Reihe angeordnetes Submodul 524 mit einem Submodul 6i einer fluchtend über oder unter der ersten Reihe liegenden zweiten Reihe 6 verbunden ist, das an einem von dem ersten Rand der ersten Reihe 5 abgewandten zweiten äußersten Rand der zweiten Reihe 6 angeordnet ist. The invention achieves this object by virtue of a submodule 524 arranged on the first outermost edge of a first row being connected to a submodule 6i of a second row 6 aligned above or below the first row and facing away from the first edge of the first row 5 second outermost edge of the second row 6 is arranged.
Erfindungsgemäß sind die Submodule Z-förmig verschient. Das äußerste Submodul einer Reihe wird daher nicht wie beim Stand der Technik mit dem ersten Submodul der gleichen Seite der senkrecht über oder unter der ersten Reihe liegenden zweiten Reihe verbunden. Vielmehr wird das in einer Reihe beispielsweise links außen angeordnete Submodul mit den rechts außen gelegenen Submodul der darunter liegenden Reihe verbunden, wobei die beiden Reihen, in denen die miteinander verbundenen Submodule angeordnet sind, senkrecht übereinander verlaufen, also fluchtend zueinander angeordnet sind. Auf diese Weise ist die abfallende Spannung zwischen den Reihen verringert. Das Haltegerüst kann daher kompakter ausgelegt werden. Dies wirkt sich auch vorteilhaft auf die Höhe der gesamten Anlage aus. Darüber hinaus liegt der Schwerpunkt eines solchen Um- richters tiefer, wodurch sich vor allem in Erdbeben gefährdeten Gebieten Vorteile ergeben. Selbstverständlich wirkt sich die kompakte Bauweise auch vorteilhafterweise auf die Kosten des Haltegerüsts selbst aus. Die Submodule sind in dem Trag¬ gerüst selbstverständlich isoliert gehalten. Die miteinander verschienten Submodule bilden ein Phasenmodul aus, das mit nur einer Phase eines Wechselspannungsnetzes verbindbar ist. Für die restlichen Phasen des Spannungsnetzes sind entsprechende Submodule miteinander R-förmiger Verschaltung vorgese- hen . According to the submodules are Z-shaped verschient. The outermost submodule of a row is therefore not connected, as in the prior art, to the first submodule of the same side of the second row lying vertically above or below the first row. Instead, the submodule arranged in a row on the left-hand side, for example, is connected to the submodule of the underlying row on the right-hand side, the two rows, in which the submodules connected to one another are arranged, extending perpendicularly one above the other, ie being aligned with one another. In this way, the falling voltage between the rows is reduced. The holding frame can therefore be made more compact. This also has an advantageous effect on the height of the entire system. In addition, the center of gravity of such a converter is lower, which results in advantages, especially in earthquake-prone areas. Of course, the compact design also has an advantageous effect on the cost of the holding framework itself. The sub-modules are held in the support ¬ scaffolding course isolated. The each other Shunted submodules form a phase module which can be connected to only one phase of an AC voltage network. For the remaining phases of the voltage network, corresponding submodules are provided with R-shaped interconnection.
Vorteilhafterweise ist die Anzahl der Submodule einer Ebene größer als 24. Die Anzahl der Ebenen ist vorteilhafterweise größer als 2. Advantageously, the number of submodules of a plane is greater than 24. The number of planes is advantageously greater than 2.
Vorteilhafterweise sind die Reihen mit nebeneinander angeord¬ neten Submodulen durch elektrisch isolierende Stützträger voneinander beabstandet. Elektrische Stützträger sind in der Regel mit Rippen versehen, so dass eine erhöhte Kriechfestig¬ keit bereitgestellt ist. Auf diese Art und Weise wird die Spannungsfestigkeit zwischen den Reihen noch weiter erhöht. Advantageously, the rows of side by side angeord ¬ Neten submodules are spaced apart by electrically insulating support beams. Electric support beams are usually provided with ribs, so that an increased Kriechfestig ¬ speed is provided. In this way, the withstand voltage between the rows is further increased.
Weitere Vorteile der Erfindung werden nachfolgend anhand von Ausführungsbeispielen unter Bezug auf die Figuren beschrieben, wobei gleiche Bezugszeichen auf gleich wirkende Bauteile verweisen und wobei Further advantages of the invention are described below with reference to embodiments with reference to the figures, wherein like reference numerals refer to like-acting components and wherein
Figur 1 ein Phasenmodul eines Umrichters gemäß dem 1 shows a phase module of an inverter according to the
Stand der Technik schematisch und  State of the art schematically and
Figur 2 ein Ausführungsbeispiel eines Teils des erfin¬ dungsgemäßen Umrichters verdeutlichen. Figur 1 zeigt ein Phasenmodul eines Umrichters gemäß demFigure 2 illustrate an embodiment of a portion of the OF INVENTION ¬ to the invention the inverter. FIG. 1 shows a phase module of an inverter according to FIG
Stand der Technik, der bereits weiter oben ausführlich beschrieben wurde. Figur 2 zeigt ein Ausführungsbeispiel eines Phasenmoduls des erfindungsgemäßen Umrichters 9, der einen aus Isoliermaterial gefertigten Tragrahmen 2 aufweist. Der Tragrahmen 2 verfügt wieder über als Tragsäulen dienende Stützträger 3, die Reihen 5, 6 und 7 aus nebeneinander angeordneten bipolaren Submodu- len 4 voneinander trennen. Wie bereits ausgeführt wurde, verfügt jedes Submodul über einen Energiespeicher, wie beispielsweise einen Kondensator, sowie über eine mit dem Kondensator verbundene Leistungshalbleiterschaltung, so dass entweder die an dem Kondensator abfallende Spannung an diePrior art, which has already been described in detail above. FIG. 2 shows an exemplary embodiment of a phase module of the converter 9 according to the invention, which has a support frame 2 made of insulating material. The support frame 2 again has support columns 3 serving as support columns, which separate rows 5, 6 and 7 from side by side arranged bipolar submodules 4. As already stated, each submodule has an energy store, such as a capacitor, as well as a power semiconductor circuit connected to the capacitor, so that either the voltage drop across the capacitor is applied to the capacitor
Ausgangsklemmen eines jeden Submoduls erzeugbar ist oder aber eine Nullspannung. An jedem Submodul 4 kann hier eine Spannung von 1 kV oder aber eine Spannung von Null erzeugt werden. Figur 2 zeigt wie in Figur 1 nur ein Phasenmodul eines Umrichters 1, der jedoch aus insgesamt drei Phasenmodulen be¬ steht, die beispielsweise hinter dem in den Figuren gezeigten Phasenmodul und somit verdeckt angeordnet sind. Die Phasenmo¬ dule sind identisch aufgebaut und weisen jeweils einen Wech- selspannungsanschluss für eine Phase des angeschlossenen Wechselspannungsnetzes auf. Darüber hinaus verfügt jedes Pha¬ senmodul über zwei unterschiedlich gepolte Gleichspannungsanschlüsse . Output terminals of each submodule is generated or a zero voltage. At each submodule 4, a voltage of 1 kV or else a voltage of zero can be generated here. FIG. 2 shows, as in FIG. 1, only one phase module of an inverter 1, which, however, consists of a total of three phase modules which, for example, are arranged behind the phase module shown in the figures and thus concealed. The Phasenmo ¬ modules are constructed identically and each have a AC voltage connection for a phase of the connected AC voltage network. In addition, each Pha ¬ senmodul has two differently polarized DC voltage connections.
In den Figuren ist die elektrische Verbindung der senkrecht übereinander liegenden Reihen eines Phasenmoduls gezeigt. Die Eingangsspannung am Submodul 5i beträgt 200 kV. Die Ausgangs¬ spannung des Submoduls 524 beträgt dann 176 kV. Um die größt¬ mögliche Spannung zwischen den Reihen 5, 6 und 7 zu verringern, ist im Gegensatz zum Stand der Technik nicht das Submo- dul 624 mit dem Submodul 524 über die Anschlussverschienung 8 verbunden. Vielmehr ist das Submodul 524 mit dem Submodul 61 verbunden. Mit anderen Worten wird ein am ersten Ende einer ersten Reihe 5 angeordnetes Submodul mit dem Submodul der senkrecht darunter liegenden zweiten Reihe einer zweiten Ebe- ne 6 verbunden, das an dem von dem ersten Ende der ersten Reihe abgewandten zweiten Ende der zweiten Reihe angeordnet ist. Entsprechendes gilt für die Verbindung des Submoduls 624 mit dem Submodul 1\. Zwischen den Reihen 5 und 6 oder 6 und 7 fällt dann jeweils nur noch eine Spannungsdifferenz von maxi¬ mal 24 kV ab. In the figures, the electrical connection of the vertically superposed rows of a phase module is shown. The input voltage at the submodule 5i is 200 kV. The output ¬ voltage of the submodule 524 is then 176 kV. To reduce the greatest possible ¬ voltage between the rows 5, 6 and 7, is not connected to the sub module 624 with the sub-module 524 via the connecting rail system 8, in contrast to the prior art. Rather, submodule 524 is connected to submodule 61. In other words, a submodule arranged at the first end of a first row 5 is connected to the submodule of the vertically lower second row of a second row. ne 6, which is arranged at the second end facing away from the first end of the first row second end of the second row. The same applies to the connection of the submodule 624 with the submodule 1 \ . Between the rows 5 and 6 or 6 and 7 respectively then only a voltage difference of 24 kV maxi ¬ times drops.

Claims

Patentansprüche claims
1. Umrichter (9) zur Umrichtung einer elektrischen Größe wie Spannung oder Strom im Bereich der Elektroenergieübertragung und -Verteilung mit einer Reihenschaltung von bipolaren Sub- modulen (4), die jeweils eine Leistungshalbleiterschaltung und einen Energiespeicher aufweisen, und mit einem Traggerüst (2) zum isolierten Halten der Submodule (4), so dass die Sub- module (4) nebeneinander in wenigstens zwei übereinander ge- stapelten Reihen (5,6,7) angeordnet sind, wobei eine Ver- schienung (8) zur elektrischen Verbindung der Submodule (4) vorgesehen ist, 1. converter (9) for conversion of an electrical variable such as voltage or current in the field of electric power transmission and distribution with a series circuit of bipolar sub-modules (4), each having a power semiconductor circuit and an energy storage, and with a support frame (2) for holding the submodules (4) in an insulated manner, so that the submodules (4) are arranged next to one another in at least two rows (5, 6, 7) stacked one above the other, one stranding (8) for the electrical connection of the submodules (4) is provided
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
ein am ersten äußersten Rand einer ersten Reihe (5) angeord- netes Submodul (524) mit einem Submodul (6i) einer senkrecht über oder unter der ersten Reihe (5) liegenden zweiten Reihe (6) verbunden ist, das an einem von dem ersten Rand der ersten Reihe (5) abgewandten zweiten äußersten Rand der zweiten Reihe (6) angeordnet ist. a submodule (5 24 ) arranged at the first outermost edge of a first row (5) is connected to a submodule (6i) of a second row (6) lying vertically above or below the first row (5) and located at one of the first edge of the first row (5) facing away from the second outer edge of the second row (6) is arranged.
2. Vorrichtung (9) nach Anspruch 1, 2. Device (9) according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
die Anzahl der Submodule (4) einer Reihe größer oder gleich 24 ist. the number of submodules (4) in a row is greater than or equal to 24.
3. Vorrichtung (9) nach Anspruch 1 oder 2, 3. Device (9) according to claim 1 or 2,
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
die Anzahl der Reihen (5,6,7) größer als zwei ist. the number of rows (5,6,7) is greater than two.
4. Vorrichtung (9) nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 4. Device (9) according to one of the preceding claims, characterized in that a
die Reihen (5,6,7) von nebeneinander angeordneten Submodulen (4) durch elektrisch isolierende Stützkörper (3) voneinander beabstandet sind. the rows (5, 6, 7) of juxtaposed submodules (4) are separated from one another by electrically insulating support bodies (3) are spaced.
PCT/EP2010/058362 2009-06-30 2010-06-15 Configuration of a multi-step converter of the electrical power supply WO2011000687A1 (en)

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