WO2014005634A1 - Sous-module à trois niveaux pour convertisseur de source de tension - Google Patents

Sous-module à trois niveaux pour convertisseur de source de tension Download PDF

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Publication number
WO2014005634A1
WO2014005634A1 PCT/EP2012/063106 EP2012063106W WO2014005634A1 WO 2014005634 A1 WO2014005634 A1 WO 2014005634A1 EP 2012063106 W EP2012063106 W EP 2012063106W WO 2014005634 A1 WO2014005634 A1 WO 2014005634A1
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WO
WIPO (PCT)
Prior art keywords
switching unit
energy storage
branch
connection terminal
switching
Prior art date
Application number
PCT/EP2012/063106
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English (en)
Inventor
Kalle ILVES
Original Assignee
Abb Ab
Norrga, Staffan
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 Abb Ab, Norrga, Staffan filed Critical Abb Ab
Priority to PCT/EP2012/063106 priority Critical patent/WO2014005634A1/fr
Publication of WO2014005634A1 publication Critical patent/WO2014005634A1/fr

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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
    • H02M7/42—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

Definitions

  • the present invention generally relates to voltage source converters. More particularly the present invention relates to submodule for use in series with other submodules in a voltage source converter as well as to a voltage source converter including such a submodule.
  • submodules have traditionally been provided as two-level units or half bridge circuits comprising two switching units and a single capacitor providing a voltage. The submodule then gives a voltage
  • contribution to the conversion typically used for forming an AC voltage, which contribution is either the capacitor voltage or a zero voltage.
  • a full bridge submodule comprising four switching units and a capacitor.
  • a full bridge will then provide three levels: the positive voltage of the capacitor, the negative voltage of the capacitor and a zero voltage.
  • the capacitors are connected in parallel when a capacitor voltage is provided and in series with each other when a zero voltage is provided.
  • the capacitors In a second three-level variation of the submodule, the capacitors have different voltages, where a first has a voltage that is double the voltage of a second. This second submodule variation provides zero voltage, the second capacitor voltage, the difference between the two capacitor voltages or the voltage of the first
  • One object of the present invention is to provide a submodule with energy storage elements, which submodule allows the ripple on the energy storage elements to be lowered without the need to raise the switching
  • This object is according to a first aspect of the present invention solved through a submodule for connection in series with other submodules in a phase leg of a voltage source converter and comprising:
  • connection terminal each providing a connection for the submodule to the phase leg
  • connection terminals for obtaining at least a first voltage level, a second higher voltage level and a third intermediate voltage level between the
  • switching units comprise switching units switchable to connect the first and second energy storage elements in parallel between the first and second connection terminals for providing the third intermediate voltage level.
  • Another object of the present invention is to provide a voltage source converter having a number of submodules with energy storage elements, which submodules allows a lowering of the ripple on the energy storage elements without the need to raise the switching frequency.
  • a voltage source converter including at least one phase leg, where each phase leg includes a number of submodules and at least one submodule comprises:
  • connection terminal each providing a connection for the submodule to the corresponding phase leg
  • first and second energy storage element selectively connect the first and second energy storage element between the first and second connection terminals for obtaining at least a first voltage level, a second higher voltage level and a third intermediate voltage level between the connection terminals,
  • switching units comprises switching units switchable to connect the first and second energy storage elements in parallel between the first and second connection terminals for providing the second intermediate voltage level.
  • Embodiments of the present invention have a number of advantages. Some embodiments provide a three-level submodule for a voltage source converter where the third intermediate voltage level can be provided with the energy storage elements connected in parallel. Through this measure the voltage ripple of the
  • submodule can be reduced at low switching frequencies.
  • the conduction losses, voltage ratings and cost of semiconductors compared to conventional two-level modules are furthermore not negatively influenced through the more complex structure of embodiments described herein.
  • the current rating is in some
  • fig. 1 schematically shows a voltage source converter having a number of parallel branches in the form of phase legs each provided with a number of voltage source converter submodules
  • fig. 2 schematically shows the structure of a voltage source converter submodule according to a first embodiment
  • fig. 3 schematically shows the structure of a voltage source converter submodule according to a second embodiment
  • fig. 4 schematically shows the structure of a voltage source converter submodule according to a third
  • fig. 5 schematically shows the structure of a voltage source converter submodule according to a fourth embodiment
  • fig. 6 schematically shows the structure of a voltage source converter submodule according to a fifth
  • FIG. 7 schematically shows the structure of a voltage source converter submodule according to a sixth
  • Voltage source converters can be used in many types of electrical power systems, such as high-voltage power transmission systems. Examples on systems are direct current power transmission systems like HVDC (High
  • voltage source converters are used as for instance rectifiers and inverters. However, they may also be used as SVCs (Static VAr compensator) .
  • Fig. 1 shows a block schematic outlining an example of a voltage source converter 10, which may be provided as either a rectifier or an inverter in a power
  • the voltage source converter 10 here includes a group of branches in the form of phase legs connected in parallel between two DC terminals DC+ and DC- for connection to a DC transmission system.
  • branches or phase legs PL1, PL2 and PL3 there are three such branches or phase legs PL1, PL2 and PL3 in order to enable
  • phase leg PLl, PL2, PL3 has a first and second end point.
  • first end points of all the phase legs PLl, PL2 and PL3 are connected to a first DC terminal DC+ while the second end points are connected to a second DC terminal DC- .
  • Each phase leg PLl, PL2, PL3 of this first type of voltage source converter 10 further includes a lower and upper phase leg half and at the junction where the halves of a leg meet, there is provided an AC terminal.
  • a first phase leg PLl having an upper half and a lower half
  • a second phase leg PL2 having an upper half and a lower half
  • a third phase leg PL3 having an upper half and a lower half.
  • each AC terminal AC1, AC2, AC3 is here connected to the corresponding phase leg via a respective inductor LAC1, LAC2, LAC3.
  • each half furthermore includes one current limiting inductor Lul, Lu2, Lu3, Lll, L12, and L13 connected to the corresponding DC terminal DC+ and DC-.
  • phase inductors can be split in half, where one half is provided in one phase leg half and the other in the other phase leg half of a phase leg. It is also possible to completely omit the phase inductors and/or the current limiting inductors described above.
  • the phase legs all comprise submodules that are used for forming the AC voltages.
  • the submodules are
  • phase legs typically connected in series or in cascade in the phase legs .
  • each phase leg half there are three submodules in each phase leg half.
  • the upper half of the first phase leg PLl includes three submodules Clul, C2ul, C3ul, while the lower half of the first phase leg PLl includes three submodules Clll, C211, and C311.
  • the upper half of the second phase leg PL2 includes three submodules Clu2, C2u2, C3u2, while the lower half of the second phase leg PL2 includes three submodules C112, C212, and C312.
  • the upper half of the third phase leg PL3 includes three submodules Clu3, C2u3, C3u3, while the lower half of the third phase leg PL3 includes three submodules C113, C213, and C313.
  • control unit 12 which is set to control the submodules. Control of each submodule in a phase leg half is normally done through providing the submodule with control signals that control the contribution of that submodule to an AC waveform provided by converter 10.
  • the common control unit 12 controls the submodules for converting AC power to DC power or vice versa.
  • the submodules further provide a voltage based on energy stored in energy storage elements.
  • the submodules in the upper half of a phase leg such as the submodules Clul, C2ul and C3ul of the upper half of the first phase leg PL1 are typically controlled so that they provide a DC component corresponding to a positive DC voltage of the first DC terminal DC+ and an AC component corresponding to the full AC voltage of a corresponding AC terminal AC1, AC2 or AC3, while the submodules of the
  • phase leg corresponding lower half of the phase leg typically provide a DC component corresponding to a negative DC voltage of the second DC terminal DC- and an AC component corresponding to the full AC voltage of the corresponding AC terminal AC1, AC2 or AC3.
  • submodules on opposite sides of an AC terminal of a phase leg here typically have opposite polarities.
  • the converter 10 may here be operated in two
  • control furtmermore typically involves generating control signals by the control unit 12 in known fashion based on PWM modulation.
  • Fig. 2 schematically shows a submodule Clul according to a first embodiment of the present invention that may be used in the converter of fig. 1.
  • the submodule Clul comprises a first and a second connection terminal TE1 and TE2, each providing a connection for the submodule to a phase leg of the converter.
  • the first connection terminal TE1 may be a positive connection terminal and the second connection terminal TE2 may be a negative connection terminal, which means that a positive voltage is provided between the first and second connection terminals TE1 and TE2.
  • the submodule Clul also comprises a first and a second energy storage element CI and C2, which may be provided in the form of capacitors. It is sometimes possible with batteries instead.
  • the submodule Clul illustrated in fig. 2 also comprises a number of switching units SI, S2, S3, S4, S5, S6, S7 and S8 that are configured to selectively connect the first and second energy storage elements CI and C2 between the first and second connection terminals TE1 and TE2.
  • the first voltage level may be a zero voltage level
  • the second voltage level may be the sum of the voltages U d of the two energy storage elements CI and C2
  • the third voltage level may be the voltage level U d of the first energy storage element CI or the second energy storage element C2. All these voltage levels may furthermore be positive voltage levels.
  • the third intermediate voltage level may also be the voltage obtained through connecting the first energy storage element CI in parallel with the second energy storage element C2.
  • the voltages U d of the two energy storage elements CI and C2 are furthermore with
  • the submodule Clul comprises switching units switchable to connect the first and second energy storage elements CI and C2 in parallel between the first and second connection terminals for providing the second intermediate voltage level.
  • the first energy storage element CI has two ends where a first end is coupled to the first connection terminal TE1 and a second end is coupled to the second connection terminal TE2 via a first branch BR1.
  • the first branch comprises a first and a second switching unit SI and S2.
  • the second energy storage element C2 has two ends, where a first end is coupled to the first connection terminal TE1 via a second branch BR2 and the second end is coupled to the second connection terminal TE2.
  • the second branch BR1 comprises a third and a fourth switching unit S3 and S4.
  • the submodule there is also a fifth switching unit S5 connected between the first end of the second energy storage element C2 and the junction between the first and second switching units SI and S2 of the first branch BR1 and a sixth switching unit S6 connected between the first connection terminal TE1 and the junction between the first and second switching units SI and S2 of the first branch BR1.
  • a seventh switching unit S7 connected between the second end of the first energy storage element CI and the junction between the third and fourth units S3 and S4 of the second branch BR2.
  • an eighth switching unit S8 connected between the second
  • the switching units of the submodule may be provided as switching elements with anti-parallel diodes.
  • switching elements may be realized in the form of IGBTs (Insulated Gate Bipolar Transistor) .
  • IGBTs Insulated Gate Bipolar Transistor
  • the conductivity of the diode of the first switching unit SI is towards the first connection terminal TE2.
  • the direction of conductivity of the diode of the second switching unit S2 is towards the second connection terminal TE2.
  • the direction of conductivity of the diode of the third switching unit S3 is towards the first connection terminal TE1 and the conductivity of the diode of the fourth switching unit S4 is towards the second connection terminal TE2.
  • the direction of conductivity of the diode of the fifth switching unit S5 is towards the first end of the second energy storage element C2, while the direction of conductivity of the diode of the sixth switching unit S6 is towards the first connection terminal TE1.
  • the direction of conductivity of the diode of the seventh switching unit S7 is away from the second end of the first energy storage element CI and the
  • Submodules have traditionally been provided as two- level or half bridge circuits comprising two switching units and a single energy storage element in the form of a capacitor providing a voltage. Such a traditional submodule then gives a voltage contribution to the conversion, which is either the capacitor voltage or a zero voltage.
  • the energy storage elements of the submodules thus act as voltage sources that can be either inserted or bypassed in a chain of series connected submodules.
  • a voltage source converter such as that shown in fig. 1
  • the power exchange between the DC link and the submodules is carried out by the current that is flowing between the DC terminals through each phase leg. This current is often referred to as a circulating current.
  • a power exchange between the AC side and the submodules is obtained as a consequence of the alternating current that is injected at the AC terminal. If the converter is controlled in such a way that the difference of the input and output power corresponds to the losses in the converter, the stored energy in each energy storage element can be kept approximately constant.
  • the maximum charge in each period should be distributed as evenly as possible between all of the series connected submodules.
  • the traditional way of using a submodule when providing a voltage contribution to a converter, such as the converter in fig. 1 is to apply the voltage of one capacitor between the connection terminals.
  • the inventors have discovered that by connecting submodule energy storage elements, e.g. capacitors, in parallel with each other, the above-mentioned ripple is considerably reduced.
  • the control unit 12 of the converter 10 controls the switching units of the submodules, e.g. of the type depicted in fig. 2, of a phase leg to provide a voltage contribution of 0, U d or 2U d , which voltage contribution is used to form an AC voltage on an AC terminal of the phase leg.
  • the second switching unit S2 is a secondary switching unit.
  • the fourth switching unit S4 is a secondary switching unit.
  • One of the branches is furthermore a primary branch, while the other is a secondary branch.
  • the fifth switching unit S5 is connected between the junction joining the switching units of the primary branch and the point where the secondary branch is connected to its associated energy storage element.
  • the sixth switching unit S6 is connected between the same junction of the primary branch and the connection terminal TE1 to which the energy storage element associated with the primary branch is connected.
  • the first branch BRl is a primary branch
  • the second branch BR2 is a secondary branch.
  • the second branch BR2 is a primary branch, while the first branch is a secondary branch.
  • control unit 12 selectively controls the switching units of the first branch BRl to connect the first energy storage element CI between the two connection terminals for providing the third voltage level U d , selectively controls the switching units of the second branch BR2 to connect the second energy storage element C2 between the two connection terminals for providing the third voltage level U d , selectively controls the sixth and primary switching unit of the primary branch for interconnecting the two connection terminals TE1 and TE2 for providing the first voltage level 0 and selectively controls the fifth and
  • the control unit 12 thus selectively controls the switching units SI and S2 of the first branch BRl to connect the first energy storage element CI between the two connection terminals TE1 and TE2 for providing the third voltage level 3 ⁇ 4, selectively controls the switching units S3 and S4 of the second branch BR2 to connect the second energy storage element C2 between the two connection terminals TE1 and TE2 for providing the third voltage level 3 ⁇ 4, selectively controls the first and sixth switching units SI and S6 for interconnecting the two connection terminals for providing the first voltage level OV and selectively controls the second and fifth switching units S2 and S5 for connecting the first and second energy storage elements CI and C2 in series between the connection terminals for providing the second voltage level 23 ⁇ 4.
  • control unit 12 is
  • connection terminals for providing the third voltage level Ud Some embodiments of the invention provide an
  • One variation of the proposed submodule design comprises 8 unidirectional switches with antiparallel diodes and two DC capacitors.
  • this proposed submodule design is in some respects similar to two conventional series connected submodules.
  • the main difference is that when the intermediate voltage level is used, the two energy storage elements can be connected in parallel.
  • the charge is always distributed evenly between the two energy storage elements. Consequently surge currents are avoided when the capacitors are connected in parallel since they always hold the same charge.
  • the submodule shown in fig. 2 has six allowable
  • the voltage rating of each switching unit in the proposed submodule design is the same as the voltage rating of the switching units of two-level submodules. It can also be observed that for every combination of switching states in Table I, the current flowing through the submodule is conducted through two parallel paths. This means that each switching unit only conducts half of the current that flows through the submodule. Consequently, the current rating of the switching units in the proposed submodule design is half of the current rating required for the switching units in traditional half-bridge submodules. Therefore, it can be concluded that the combined power rating of the semiconductors is the same as in the traditional submodule realization.
  • Some embodiments of the invention provide a 3-level converter cell with two voltage sources or energy storage elements.
  • the energy storage element can be connected in parallel.
  • the nominal operation is to insert two energy storage elements, e.g. capacitors, in parallel.
  • two energy storage elements e.g. capacitors
  • the voltages can be controlled individually in such a way that the imbalance in the voltages of the energy storage elements is removed.
  • a submodule according to a second embodiment is shown in fig. 3.
  • This embodiment differs from the first embodiment in that the seventh and eighth switching units have been removed. Through the removal of the seventh switching unit there is now no connection between the second end of the first energy storage element CI and the second branch BR2 and through the removal of the eighth switching unit there is no connection between the second branch BR2 and the second end of the second energy storage element C2. These two latter connections have thus been removed.
  • FIG. 4 A third embodiment of a submodule with a reverse voltage blocking functionality is shown in Fig. 4.
  • This submodule is a variation of the submodule of the first embodiment, i.e. with all the previously described eight switching units SI - S8.
  • the ninth switching unit S9 has a diode with a direction of conductivity away from the first
  • connection terminal TE There is also a tenth
  • the switching elements of the switching units S6 and S10 remain closed at all times.
  • a fault such as a ground fault on the DC side of the converter, and the submodule is set to block the current caused by the fault
  • all of the switching elements of the switching units SI through S10 are turned off. Any current that is forced through the submodule due to the stored energy in the inductors will then be redirected through the diodes in such a way that the current is charging the energy storage elements CI and C2.
  • the submodule will block voltages and currents in both directions.
  • the circuit design also has a possibility to insert a negative voltage level by closing the switching
  • a fourth embodiment of the invention shown in fig. 5 there is an eleventh switching unit Sll having the same function as the ninth switching unit in fig. 4 and a twelfth switching unit S12 having the same function as the tenth switching unit in fig. 4.
  • the eleventh switching unit Sll is connected between the sixth switching unit S6 and the junction between the first and second switching units SI and S2, where the
  • eleventh switching unit Sll has a diode with a
  • the twelfth switching unit S12 is connected between the eight switching unit S8 and the second connection terminal TE2 and has a diode with a direction of conductivity towards the second
  • connection terminal TE2
  • switching unit S13 is connected in the first branch BR1 between the second connection terminal TE2 and the first switching unit SI and has a diode with a
  • the fourteenth switching unit S14 is connected in the second branch BR2 between the first connection terminal TEl and the third switching unit S3 and has a diode with a direction of conductivity away from the first connection terminal TEl.
  • the switching elements of the extra switching units Sll and S12 and S13 and S14, respectively, do not switch during nominal operation. Furthermore, the voltage and current ratings of Sll and S12, S13 and S14,
  • the submodule comprises a first inductor LI connected between the first energy storage element CI and the first connection terminal TE1 and a second inductor L2 connected between the second energy storage element C2 and the second connection terminal TE2.
  • the current in the first inductor LI is always the same as the current in the second inductor L2. This means that if the inductors LI and L2 are magnetically coupled, the magnetic coupling only affects the
  • differential mode component That is, the voltage difference between the first and the second energy storage elements CI and C2 when these are connected in parallel. Consequently, by having magnetically coupled inductors, the surge current can be reduced even further .
  • the second branch could be a primary branch and the first branch could be a
  • the switching elements used in the switching units of the submodules have been described as being IGBTs. It should be realized that other types of switching elements may be used, such as elements based on
  • thyristors MOSFET transistors
  • GTOs Gate Turn-Off Thyristor
  • IGCTs Integrated Gate Commuted Thyristor
  • the control unit need not be provided as a part of a voltage source converter. It can be provided as a separate device that provides control signals to the voltage source converter. This control unit may
  • processor with accompanying program memory comprising computer program code that performs the desired control functionality when being run on the processor.

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

Abstract

L'invention concerne un convertisseur de source de tension comprenant des sous-modules et un sous-module dans un tel convertisseur de source de tension. Le sous-module (C1u1) comprend des bornes de connexion (TE1, TE2), chacune fournissant une connexion pour le sous-module à la branche de phase, un premier et un second élément de stockage d'énergie (C1, C2) et un certain nombre d'unités de commutation (S1, S2, S3, S4, S5, S6, S7, S8) configurées pour connecter de manière sélective les premier et second éléments de stockage d'énergie (C1, C2) entre les bornes de connexion (TE1, TE2) pour obtenir au moins un premier niveau de tension, un second niveau de tension plus élevé et un troisième niveau de tension intermédiaire (Ud) entre les bornes de connexion, les unités de commutation comprenant des unités de commutation (S1, S2, S3, S4, S5, S6, S7, S8) aptes à être commutées pour connecter les premier et second éléments de stockage d'énergie en parallèle entre les bornes de connexion (TE1, TE2) pour fournir le troisième niveau de tension intermédiaire (Ud).
PCT/EP2012/063106 2012-07-05 2012-07-05 Sous-module à trois niveaux pour convertisseur de source de tension WO2014005634A1 (fr)

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Cited By (10)

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EP2913925A1 (fr) 2014-02-26 2015-09-02 Alstom Technology Ltd. Appareils d'équilibrage et/ou de la résistance de décharge
WO2015136552A3 (fr) * 2014-03-12 2015-12-10 Indian Institute Of Technology Bombay Structure de sous-module de convertisseur modulaire multiniveaux (mmc) permettant de réduire les pertes de commutation
EP3255773A1 (fr) 2016-06-09 2017-12-13 GE Energy Power Conversion Technology Ltd Sous-module double à faible perte pour un convertisseur multipoints modulaire et convertisseur multipoints modulaire équipé de celui-ci
CN108702105A (zh) * 2016-02-25 2018-10-23 通用电气能源能量变换技术有限公司 用于模块化多电平换流器的双子模块和包括该双子模块的模块化多电平换流器
EP3413455A1 (fr) 2017-06-06 2018-12-12 General Electric Technology GmbH Convertisseur et leurs procédés de fonctionnement
EP3462479A1 (fr) 2017-10-02 2019-04-03 General Electric Technology GmbH Ensemble semi-conducteur comportant protection contre les défauts électriques
WO2019145044A1 (fr) 2018-01-26 2019-08-01 Abb Schweiz Ag Protection de cellules de commutation pour un convertisseur de source de tension
EP3547526A1 (fr) 2018-03-28 2019-10-02 General Electric Technology GmbH Organe de commande de convertisseur
WO2020001764A1 (fr) 2018-06-27 2020-01-02 General Electric Technology Gmbh Convertisseurs et leurs procédés de fonctionnement
CN114094867A (zh) * 2021-11-24 2022-02-25 山东大学 一种分形功率变换器及其构造方法

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DE102010052934A1 (de) * 2010-11-30 2012-05-31 Technische Universität München Neue Multilevelkonvertertopologie mit der Möglichkeit zur dynamischen Seriell- und Parallelschaltung von Einzelmodulen

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US20080198630A1 (en) 2005-08-30 2008-08-21 Siemens Aktiengesellschaft Converter Circuit Comprising Distributed Energy Stores
WO2012040257A1 (fr) 2010-09-21 2012-03-29 Curtiss-Wright Electro-Mechanical Corporation Convertisseur multi-niveau à deux bornes
DE102010052934A1 (de) * 2010-11-30 2012-05-31 Technische Universität München Neue Multilevelkonvertertopologie mit der Möglichkeit zur dynamischen Seriell- und Parallelschaltung von Einzelmodulen

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10110142B2 (en) 2014-02-26 2018-10-23 Alstom Technology Ltd Balancing and/or discharge resistor arrangements
EP2913925A1 (fr) 2014-02-26 2015-09-02 Alstom Technology Ltd. Appareils d'équilibrage et/ou de la résistance de décharge
WO2015136552A3 (fr) * 2014-03-12 2015-12-10 Indian Institute Of Technology Bombay Structure de sous-module de convertisseur modulaire multiniveaux (mmc) permettant de réduire les pertes de commutation
CN108702105B (zh) * 2016-02-25 2020-12-01 通用电气能源能量变换技术有限公司 用于模块化多电平换流器的双子模块和包括该双子模块的模块化多电平换流器
CN108702105A (zh) * 2016-02-25 2018-10-23 通用电气能源能量变换技术有限公司 用于模块化多电平换流器的双子模块和包括该双子模块的模块化多电平换流器
US20190052187A1 (en) * 2016-02-25 2019-02-14 Ge Energy Power Conversion Technology Ltd Dual submodule for a modular multilevel converter and modular multilevel converter including the same
US11108338B2 (en) * 2016-02-25 2021-08-31 Ge Energy Power Conversion Technology Limited Dual submodule for a modular multilevel converter and modular multilevel converter including the same
EP3255773A1 (fr) 2016-06-09 2017-12-13 GE Energy Power Conversion Technology Ltd Sous-module double à faible perte pour un convertisseur multipoints modulaire et convertisseur multipoints modulaire équipé de celui-ci
US10938317B2 (en) 2016-06-09 2021-03-02 Ge Energy Power Conversion Technology Limited Low loss double submodule for a modular multi-level converter and modular multi-level converter having same
EP3413455A1 (fr) 2017-06-06 2018-12-12 General Electric Technology GmbH Convertisseur et leurs procédés de fonctionnement
WO2019068656A1 (fr) 2017-10-02 2019-04-11 General Electric Technology Gmbh Ensemble semi-conducteur avec protection contre les défauts
EP3462479A1 (fr) 2017-10-02 2019-04-03 General Electric Technology GmbH Ensemble semi-conducteur comportant protection contre les défauts électriques
WO2019145044A1 (fr) 2018-01-26 2019-08-01 Abb Schweiz Ag Protection de cellules de commutation pour un convertisseur de source de tension
WO2019185418A1 (fr) 2018-03-28 2019-10-03 General Electric Technology Gmbh Dispositif de commande de convertisseur
EP3547526A1 (fr) 2018-03-28 2019-10-02 General Electric Technology GmbH Organe de commande de convertisseur
WO2020001764A1 (fr) 2018-06-27 2020-01-02 General Electric Technology Gmbh Convertisseurs et leurs procédés de fonctionnement
CN114094867A (zh) * 2021-11-24 2022-02-25 山东大学 一种分形功率变换器及其构造方法
CN114094867B (zh) * 2021-11-24 2023-11-17 山东大学 一种分形功率变换器及其构造方法

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