EP3804113A1 - Système et procédé d'alimentation en énergie d'une charge haute puissance - Google Patents

Système et procédé d'alimentation en énergie d'une charge haute puissance

Info

Publication number
EP3804113A1
EP3804113A1 EP18746609.9A EP18746609A EP3804113A1 EP 3804113 A1 EP3804113 A1 EP 3804113A1 EP 18746609 A EP18746609 A EP 18746609A EP 3804113 A1 EP3804113 A1 EP 3804113A1
Authority
EP
European Patent Office
Prior art keywords
connection
output
phase
converter
transformer
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
EP18746609.9A
Other languages
German (de)
English (en)
Inventor
Martin Pieschel
Rainer Gruber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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 Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP3804113A1 publication Critical patent/EP3804113A1/fr
Ceased 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/14—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion between circuits of different phase number
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2173—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement
    • 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
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2176—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/49—Combination of the output voltage waveforms of a plurality of converters

Definitions

  • Plant and method for supplying energy to a high-performance load Plant and method for supplying energy to a high-performance load
  • the invention relates to a system for energy supply egg ner high-performance load.
  • a high-performance load is characterized in particular by the fact that a particularly high electrical output of more than 10 MW is required to supply the high-performance load.
  • An example of a single-phase high-performance load is a high-performance arc furnace.
  • Another example is an energy store for network stabilization of a supply network.
  • three-phase modular multi-stage converters known for example from WO 2016/155850 A1
  • a high operating voltage e.g. A particularly low-loss direct current transmission, a direct connection of a rail network supply with a special frequency or a generation of arcs for a chemical process
  • the known modular multi-stage converters have compared the requirements to high current carrying capacity, so that high costs of their application for feeding single-phase high-performance loads conflict with cost reasons.
  • a converter system with a modular multi-stage converter for converting a DC voltage into a three-phase AC voltage is known from EP 2 637 296 Al. There it is proposed to use a two-phase inverter, the output voltage of which is converted into a three-phase AC voltage by means of a two-to-three-phase transformer.
  • a Modular Multilevel Converter Based Railway Power Conditioner for Power Balance and Harmony Compensation in Scott Railway Traction System by Song et al., IEEE 2016, the use of a Scott transformer in a system for the compensation of harmonics or Reactive currents and for balancing an active power to supply a railway line.
  • the object of the invention is to propose a system of the above type, which is as cost-effective as possible and enables the most reliable supply of a high-performance load possible.
  • a type of system with a three-to-two-phase transformer which has a three-phase transformer connection on the output side for connecting to a three-phase supply network and a first output-side, single-phase transformer connection and a second output-side, single-phase transformer on the output side Transformer connection includes, as well as one
  • Converter arrangement with a first partial converter, which comprises a first input-side, single-phase AC voltage connection for connecting to the first output-side transformer connection of the three-to-two-phase transformer and a first single-phase output connection, and a second partial converter, which has a second input-side, single-phase Includes AC voltage connection for connecting to the second output-side transformer connection of the three-to-two-phase transformer and a second single-phase output connection, the partial converters being connected to one another in an output-side series and / or parallel connection and by forming a single-phase load connection for connecting to the high-performance load can be connected.
  • the single-phase connections described here are distinguished as such by the fact that each single-phase connection has two taps that are connected to a further single-phase connection or one two-pole and thus also single-phase load can be used.
  • the system according to the invention accordingly has a three-to-two-phase transformer which can be connected on the input side to a three-phase electrical network.
  • the three-to-two-phase transformer can be connected on the output side with a combination of two partial converters.
  • the partial converters can each be designed as one or two phases. This advantageously leads to a cost reduction compared to the use of three-phase converters.
  • a reliable supply of both those high-performance loads which have a high load voltage and those which require a high load current can be provided.
  • the three-to-two-phase transformer is preferably a Scott transformer or a LeBlanc transformer. These types of transformers have proven to be particularly effective and reliable.
  • the system further comprises a further transformer, which can be switched between the supply network and the three-to-two-phase transformer.
  • the mains voltage of the AC network on the input side can be transformed to a lower voltage at the input of the three-to-two-phase transformer.
  • the partial inverters are connected in series from the output side.
  • the determination of the series connection of the partial converters on the output side simplifies the construction of the system, which is particularly suitable for supplying a high-performance load with a high load voltage.
  • the partial converters are connected to one another in parallel on the output side. on.
  • the determination of the parallel connection of the partial converters on the output side in turn simplifies the construction of the system, which is therefore particularly suitable for supplying a high-performance load with a high load current.
  • the system comprises a switching device, the partial converter being selectively switchable in series or in parallel on the output side by means of the switching device.
  • the switching device can, for example, be arranged between the two partial converters.
  • the switching device is suitably four-pole, so that it can also be connected to the output connections of the two partial converters.
  • the system can be used particularly flexibly.
  • the first partial converter comprises four converter arms, a first converter arm extending between a first tap of the first input-side AC voltage connection and a first tap of the first output connection, a second converter arm extending between a first tap of the first input-side AC voltage connection and a two extends t tap of the first output connection, a third converter arm extends between a second tap of the first input-side AC voltage connection and a first tap of the first output connection, a fourth converter arm extends between a second tap of the first input-side AC voltage connection and a second tap of the first output connection, where the converter arms each have a series connection of
  • the first partial converter thus has the structure of a single-phase modular matrix converter. Depending on the design of the first partial converter
  • Switching modules and their regulation or control can generally generate an AC voltage or a DC voltage on the output side.
  • the design of the first partial converter as a single-phase modular matrix or Multi-stage converter offers the possibility of generating particularly advantageous output voltages. Accordingly, it is also possible to design the second partial converter as a single-phase modular matrix or multi-stage converter.
  • the first and the second partial converter are suitably constructed in the same way.
  • At least one, preferably all, of the switching modules comprises at least four semiconductor switches which can be switched off and an energy store which are connected to one another in a full-bridge circuit.
  • at least one, preferably all, of the switching modules comprises at least two semiconductor switches which can be switched off and an energy store, which are connected to one another in a half-bridge circuit.
  • the full bridge circuit has the advantage that output voltages of both polarities (positive and negative) can be generated.
  • Half-bridge circuit offers the advantage of lower losses. To supply a high-performance load with a DC voltage or a DC current, for example, only switching modules in half-bridge circuit can be used. This also lowers the cost of the system.
  • the invention further relates to a method for Energy/Voltage provide a high-performance load.
  • the object of the invention is to propose a species-appropriate Ver drive that is as reliable and inexpensive as possible.
  • the object is achieved by a method for supplying energy to a high-performance load, in which the high-performance load is supplied with electrical energy by means of a system according to the invention.
  • the advantages of the method according to the invention result in particular from the advantages described above in connection with the system according to the invention.
  • Figure 1 shows an embodiment of a system according to the invention in a schematic representation
  • Figure 2 shows a first example of an arrangement of Operaum converters for the system of Figure 1 in a schematic representation
  • Figure 3 shows a second example of an arrangement of partial converters for the system of Figure 1 in a schematic representation
  • Figure 4 shows a third example of an arrangement of partial converters for the system of Figure 1 in a schematic representation
  • Figure 5 shows a three-to-two-phase transformer in a Scott circuit in a schematic representation
  • Figure 6 shows a three-to-two-phase transformer in a LeBlanc circuit in a schematic representation
  • Figure 7 shows an example of a partial converter of the system of Figure 1 in a schematic representation
  • Figure 8 shows an example of a switching device for the system of Figure 1 in a schematic representation
  • Figure 9 shows an example of a converter arm for the partial converter of Figure 7 in a schematic representation
  • Figures 10 and 11 each show examples of switching modules for the converter arm of Figure 9 in a schematic Dar position.
  • Figure 1 is a system 1 for feeding a high-performance load 7 from a three-phase AC voltage or Ver supply network 6.
  • the high-performance load 7 can be, for example, a consumer, an electrical energy storage device or another AC voltage network.
  • the system 1 comprises an arrangement 2 with a three-to-two-phase transformer and a converter arrangement, the structure of which is discussed in more detail in the following FIGS. 2 to 4. Furthermore, the system 1 comprises a central control unit 5, by means of which the converter arrangement can be regulated or controlled. The control is taking into account voltage and current measured values, which are detected by means of a voltage measuring device 4 and a current measuring device 3. A three-phase transformer 8 is arranged to transform down the mains voltage of the AC network 6 between the arrangement 2 and the AC network 6.
  • FIG. 2 shows a converter arrangement 10 with a three-to-two-phase transformer 11, which can be used in system 1 in FIG. 1.
  • the three-to-two-phase transformer 11 comprises on the input side a three-phase transformer connection ABC for connecting to the three-phase transformer 8 or directly to the AC network 6 of FIG. 1. Furthermore, the three-to-two-phase transformer 11 has a first output side , single-phase transformer connection DE and a second output-side, single-phase transformer connection FG.
  • the converter arrangement 10 comprises a first partial converter 12 and a second partial converter 13.
  • the first partial converter ter 12 has a first input-side, single-phase AC voltage connection UV.
  • the two taps of the AC voltage connection UV are marked as U and V.
  • the second partial converter 13 has a second single-ended, single-phase AC voltage connection U'V '.
  • the two taps of the AC voltage connection U'V ' are identified as U' and V '.
  • the two alternating voltage connections UV, U'V 'on the input side are connected to associated transformer connections DE and FG.
  • the first part of converter 12 also has a first single-phase output connection XY with the taps X and Y.
  • the second part of the converter accordingly has a second single-phase output connection X'Y 'with the taps X' and Y '.
  • the at the partial converter 12 and 13 are connected on the output side in a series circuit, the second tap Y of the first output connector XY being connected to the first tap X 'of the second output connector X'Y' and the first tap X of the first output connector XY and the second tap Y 'of the second output connection X'Y' form a single-phase load connection 14 for connection to the high-power load, with a first load tap 14a and a second load tap 14b.
  • a load voltage Ulast can be generated at the load connection 14 by means of the converter arrangement 10.
  • FIG. 3 shows a converter arrangement 15 with a three-to-two-phase transformer 11, which can be used in system 1 in FIG. 1.
  • Converter arrangement 15 largely corresponds to that of converter arrangement 10 in FIG. 2.
  • identical and similar components are provided with the same reference numerals, so that only the differences between the examples in FIGS. 2 and 3 and 4 are discussed in more detail below becomes.
  • the two partial converters 12 and 13 of the converter arrangement 15 are connected to one another on the output side in a parallel connection.
  • the first load tap 14a is formed by the first tap X of the first output connection XY, connected to the first tap X 'of the second output connection X'Y'.
  • the second load tap 14b is formed by the second tap Y from the first output port XY, connected to the second tap Y 'of the second output port X'Y'.
  • FIG. 4 shows a converter arrangement 16 with a three-to-two-phase transformer 11, which can be used in system 1 in FIG. 1.
  • Converter arrangement 16 largely corresponds to that of converter arrangements 10 and 15 of FIGS. 2 and 3.
  • the converter arrangement 16 comprises a switching device 17.
  • the switching device 17 By means of the switching device 17, the two partial converters 12 and 13 of the converter arrangement 16 can optionally be connected to one another in a series or parallel connection on the output side.
  • the structure of the switching device 17 is discussed in greater detail in connection with the following FIG. 8.
  • FIG. 5 shows a three-to-two-phase transformer in the form of a Scott transformer 24.
  • the three-phase transformer connection ABC on the input side and the two single-phase transformer connections DE and FG on the output side can be seen.
  • FIG. 6 shows a three-to-two-phase transformer in the form of a LeBlanc transformer 25.
  • the three-phase transformer connection ABC on the input side and the two single-phase transformer connections DE and FG on the output side can be seen.
  • FIG. 7 shows a partial converter 26, which is the first or also the second partial converter for one of the Converter arrangements 10, 15, 16 of FIGS. 2 to 4 can be used.
  • the partial converter 26 comprises a first one
  • Converter arm 27, a second converter arm 28, a third converter arm 29 and a fourth converter arm 30 The partial converter 26 is accordingly designed as a single-phase matrix converter.
  • the first converter arm 27 is arranged between the first tap U of the first input-side alternating voltage connection UV and the first tap X of the first output connection XY
  • the second converter arm 28 is between the first tap U of the first input-side alternating voltage connection UV and the second tap Y arranged of the first output connection
  • the third converter arm 29 is arranged between a second tap V of the first input-side AC voltage connection UV and the first tap X from the first output connection XY
  • the fourth converter arm 30 is between the second tap V of the first input-side AC voltage connection UV and the second tap Y of the first output terminal XY is arranged.
  • the converter arms 27 to 30 are of the same design. Their structure is discussed in more detail in the following FIG. 9.
  • Figure 8 shows a formwork device 17 for the
  • the switching device is four-pole and can by means of a first switching connection 18 with the second tap Y of the first output connection XY of the first partial converter 12, by means of a second switching connection 19 with the first tap X 'of the second output connection X'Y 'of the second partial converter 13, by means of a third switching connection 20 to the first load tap 14a and by means of a fourth switching port 21 to the second load tap 14b.
  • a first switching position shown graphically in FIG. 8 by means of solid lines 22a, b an output-side parallel connection of the partial converters 12, 13 can be generated.
  • an output-side series connection of the partial converters 12, 13 can be generated.
  • FIG. 9 shows a converter arm 31 which can be used as one of the converter arms 27 to 30 in FIG. 7.
  • the converter arm 27 comprises a series connection of Wegmodu len 32, which are all constructed in the same way in the example shown, but this generally does not have to be the case.
  • the number of switching modules 32 used is basically arbitrary, which is indicated in FIG. 9 by an interrupted line 33.
  • the switching modules 32 comprise semiconductor switches and an energy store. These can be connected to one another, for example, in a half-bridge circuit or a full-bridge circuit. The structure of the switching modules is discussed in more detail in the following FIGS. 10 and 11.
  • the converter arm 31 further comprises a current sensor 34 for detecting a current through the converter arm 31 and a coupling inductor 35.
  • a switching module in a full-bridge circuit 36 for the converter arm 27 of FIG. 9 is shown in FIG.
  • the full bridge circuit 36 has a first semiconductor switch 37 and a second semiconductor switch 38, both in the form of IGBTs.
  • the forward direction of the two semiconductor scarf ter 37 and 38 is rectified.
  • the full bridge circuit 36 comprises a third semiconductor switch 39 and a fourth semiconductor switch 40, both likewise in the form of IGBTs.
  • the IGBTs can be replaced by other semi-conductor switches that can be switched off.
  • the forward direction of the semiconductor switches 39 and 40 is rectified.
  • a switching module capacitor 41 is arranged in parallel with the two series circuits of the semiconductor switches.
  • a first connection AC1 is arranged at a potential point 42 between the semiconductor switches 37, 38; a second connection AC2 is arranged at a potential point 43 between the semiconductor switches tern 39, 40 arranged.
  • a free-wheeling diode D is connected in anti-parallel to each of the semiconductor switches 37-40.
  • a switching module in a half-bridge circuit 45 for the converter arm 27 of FIG. 9 is shown in FIG.
  • the half-bridge circuit 45 has two semiconductor switches 37, 38 which can be switched off (in the illustrated case, they are IGBT switches, in general other switchable semiconductor switches, such as IGCT or the like, can also be used) and the energy store 41, the semiconductor switches 37 and 38 are connected to the energy storage device 41 in such a way that a voltage Uzk or a zero voltage can be generated at the output terminals AC1, 2 of the switching module.
  • a voltage sensor 44 is provided for detecting the voltage Uzk.

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

Abstract

L'invention concerne un système (1), et un procédé d'alimentation en énergie d'une charge haute puissance (7) au moyen du système. Le système selon l'invention comprend un transformateur deux à trois phases (11) qui comprend côté entrée un raccordement triphasé (ABC) de transformateur destiné à être connecté à un réseau d'alimentation triphasé (6) et côté sortie un premier raccordement monophasé (DE) de transformateur côté sortie et un second raccordement monophasé (FG) de transformateur côté sortie, ainsi qu'un ensemble convertisseur (10) muni d'un premier convertisseur partiel (12) qui comprend un premier raccordement monophasé de tension alternative côté entrée destiné à être connecté au premier raccordement de transformateur côté sortie du transformateur deux à trois phases ainsi qu'un premier raccordement de sortie monophasé, et d'un second convertisseur partiel (13) qui comprend un second raccordement monophasé de tension alternative côté entrée destiné à être connecté au second raccordement de transformateur côté sortie du transformateur deux à trois phases ainsi qu'un second raccordement de sortie monophasé. Les convertisseurs partiels peuvent être connectés l'un à l'autre par les raccordements de sortie dans un montage en série et/ou en parallèle côté sortie et en formant un raccordement de charge monophasé (14) destiné à être connecté à la charge haute puissance.
EP18746609.9A 2018-07-10 2018-07-10 Système et procédé d'alimentation en énergie d'une charge haute puissance Ceased EP3804113A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/068636 WO2020011339A1 (fr) 2018-07-10 2018-07-10 Système et procédé d'alimentation en énergie d'une charge haute puissance

Publications (1)

Publication Number Publication Date
EP3804113A1 true EP3804113A1 (fr) 2021-04-14

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Country Status (3)

Country Link
US (1) US11342859B2 (fr)
EP (1) EP3804113A1 (fr)
WO (1) WO2020011339A1 (fr)

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US20210305905A1 (en) 2021-09-30

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