WO2015113780A1 - Dispositif d'accumulation d'énergie, système comprenant un dispositif d'accumulation d'énergie et procédé permettant de commander un dispositif d'accumulation d'énergie - Google Patents

Dispositif d'accumulation d'énergie, système comprenant un dispositif d'accumulation d'énergie et procédé permettant de commander un dispositif d'accumulation d'énergie Download PDF

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Publication number
WO2015113780A1
WO2015113780A1 PCT/EP2015/050042 EP2015050042W WO2015113780A1 WO 2015113780 A1 WO2015113780 A1 WO 2015113780A1 EP 2015050042 W EP2015050042 W EP 2015050042W WO 2015113780 A1 WO2015113780 A1 WO 2015113780A1
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WIPO (PCT)
Prior art keywords
energy storage
power supply
voltage
phase
output voltage
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
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PCT/EP2015/050042
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German (de)
English (en)
Inventor
Alexander Ross
Thomas ZELTWANGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2015113780A1 publication Critical patent/WO2015113780A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02M7/49—Combination of the output voltage waveforms of a plurality of converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal 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
    • H02M7/42—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B60L2210/42—Voltage source inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • Energy storage device system with energy storage device and method for driving an energy storage device
  • the invention relates to an energy storage device, a system with a
  • Wind turbines or solar systems as well as in vehicles such as hybrid or
  • Electric vehicles increasingly electronic systems are used, which combine new energy storage technologies with electric drive technology.
  • FIG. 1 shows the supply of three-phase current to a three-phase electrical machine 101.
  • a DC voltage provided by a DC voltage intermediate circuit 103 is converted into a three-phase AC voltage via a converter in the form of a pulse-controlled inverter 102.
  • the DC intermediate circuit 103 is fed by a string 104 of serially connected battery modules 105.
  • multiple battery modules 105 are often connected in series in a traction battery 104.
  • the series connection of several battery modules involves the problem that the entire string fails if a single battery module fails. Such a failure of the power supply string can lead to a failure of the entire system.
  • temporarily or permanently occurring power reductions of a single battery module can lead to power reductions in the entire power supply line.
  • Multilevel Cascaded Inverter or Battery Direct Inverter Battery Direct Inverter (Battery Direct Inverter, BDI) known.
  • BDI Battery Direct Inverter
  • Such systems include DC voltage sources in a plurality of energy storage module strings, which are directly connectable to an electrical machine or an electrical network. In this case, single-phase or multi-phase supply voltages can be generated.
  • the energy storage module strands in this case have a plurality of energy storage modules connected in series, wherein each energy storage module has at least one battery cell and an associated controllable coupling unit, which makes it possible to interrupt the respective energy storage module string depending on control signals or to bridge the respectively associated at least one battery cell or each associated with at least one battery cell in the respective energy storage module string to switch.
  • phase signals for controlling the phase output voltage so that a separate pulse inverter can be dispensed with.
  • the required for controlling the phase output voltage pulse inverter is thus integrated so to speak in the BDI.
  • BDIs usually have higher efficiency and higher
  • the present invention therefore provides, in one aspect
  • Energy storage device for generating a three-phase supply voltage, with three parallel-connected power supply branches, each between a Output terminal and a reference potential rail are coupled, wherein each of the power supply branches a plurality of series-connected
  • Each of the energy storage modules comprises an energy storage cell module, which has at least one energy storage cell, and a coupling device with coupling elements, which are designed to selectively switch the energy storage cell module into the respective energy supply branch or to bypass it in the respective energy supply branch.
  • Energy storage device further comprises a control device which is adapted to determine the power supply branch with the lowest possible maximum output voltage, and to control the coupling means of the two other power supply branches so that their output voltage from the sum of a symmetrical voltage component whose amount of
  • asymmetric voltage components of the two remaining power supply branches is 60 °.
  • the present invention provides a system comprising a three-phase electrical machine, three phase lines coupled to one of each of three phase terminals of the electrical machine, and one
  • the present invention provides a method for driving an energy storage device to generate a three-phase
  • the method comprises the steps of determining the power supply branch with the lowest possible maximum output voltage, and driving the remaining two power supply branches, so that their
  • asymmetric voltage components of the two remaining power supply branches is 60 °.
  • Use voltage supply of a three-phase electric machine in which the generation of the phase voltages is compensated in such a way that differences in the maximum output voltages in the individual power supply branches are compensated by skillful control of the individual power supply branches. This can be achieved by dividing the output voltages of the individual power supply branches in the space vector diagram into symmetrical and asymmetrical voltage components, and the asymmetrical ones
  • Voltage shares of even more powerful power supply branches are adjusted in phase offset to each other to compensate for the lack of performance of the rest of the energy supply branch at least partially.
  • Neutral point displacement at the star point of a connected electric machine causes. This (virtual) neutral shift allows a symmetrical rotating field to be maintained over a wider voltage range than would be possible with the lowest possible maximum output voltage through the power supply branch.
  • the energy storage device may have semiconductor switches, for example MOSFET switches, as coupling elements. It can be provided according to a further embodiment that the coupling elements in
  • Fig. 1 is a schematic representation of a power supply system for a three-phase electric machine
  • Fig. 2 is a schematic representation of a system with a
  • Fig. 3 is a schematic representation of an energy storage module in
  • FIG. 4 is a schematic representation of an energy storage module in FIG.
  • Half-bridge circuit of an energy storage device of Figure 2 according to another embodiment of the invention.
  • Fig. 5 is a schematic illustration of a space vector diagram for
  • Fig. 6 is a schematic illustration of a space vector diagram for modified
  • Fig. 7 is a schematic representation of a method for driving a
  • the system 200 shows a system 200 for voltage conversion of DC voltage, which is provided by m energy storage modules 3, into an n-phase AC voltage.
  • the system 200 includes an energy storage device 1 with energy storage modules 3, which are connected in series in power supply branches.
  • three energy supply branches are shown in FIG. 2, which are suitable for generating a three-phase alternating voltage, for example for a three-phase machine 2.
  • the energy storage device 1 has at each power supply branch via an output terminal la, lb, lc, which are respectively connected to phase lines 2a, 2b and 2c.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • the system 200 in FIG. 2 serves to feed an electric machine 2.
  • Power supply network 2 is used.
  • the system 200 may further include a controller 6, which is connected to the energy storage device 1, and by means of which the
  • Energy storage device 1 can be controlled to the desired
  • the power supply branches can be connected at their end to a reference potential 4 (reference rail) which, in the illustrated embodiment, has an average potential with respect to the phase lines 2a, 2b, 2c of the electric machine 2.
  • the reference potential 4 may be, for example, a ground potential.
  • Each of the power supply branches has at least two in series
  • Energy storage modules 3 on.
  • the number of energy storage modules 3 per power branch in FIG. 2 is three, but any other number of energy storage modules 3 is also possible.
  • each of the energy supply branches preferably comprises the same number of energy storage modules 3, but it is also possible to provide a different number of energy storage modules 3 for each energy supply branch.
  • the energy storage modules 3 each have two output terminals 3a and 3b, via which an output voltage of the energy storage modules 3 can be provided. Exemplary construction forms of the energy storage modules 3 are shown in greater detail in FIGS. 3 and 4.
  • the energy storage modules 3 each comprise one
  • Coupling device 9 with a plurality of coupling elements 7 and 8.
  • the energy storage modules 3 each further comprise an energy storage cell module 5 with one or more series-connected energy storage cells 5a, 5n.
  • the energy storage cell module 5 may have, for example, serially connected batteries 5a to 5n, for example lithium-ion batteries.
  • the number of the energy storage cells 5a to 5n is as shown in FIG.
  • Energy storage module 3 exemplified two, but any other number of
  • Energy storage cells 5a to 5n is also possible.
  • the energy storage cell modules 5 are connected via connecting lines
  • Coupling device 9 is shown in Fig. 3 by way of example as a full bridge circuit with two each
  • Coupling elements 7 and two coupling elements 8 is formed.
  • the coupling elements 7 can each have an active switching element 7a, for example a
  • the coupling elements 8 can each case an active switching element 8a, for example, a semiconductor switch 8a, and a parallel thereto
  • the semiconductor switches 7a and 8a may be, for example
  • FETs Field effect transistors
  • the free-wheeling diodes 7b and 8b may also be integrated into the semiconductor switches 7a and 8a, respectively.
  • the coupling elements 7 and 8 in Fig. 3 can be controlled in such a way, for example by means of the control device 6 in Fig. 2, that the energy storage cell module 5 is selectively connected between the output terminals 3a and 3b or that
  • Energy storage cell module 5 bridged or bypassed in the power supply branch.
  • the energy storage cell module 5 can be switched forwardly between the output terminals 3a and 3b by putting the active switching element 8a on the lower right and the active switching element 7a on the upper left in a closed state while the two remaining active ones
  • a bypass state can be set by, for example, setting the Both active switching elements 8a are placed in the closed state, while the two active switching elements 7a are kept in the open state.
  • Series connection of a power supply branch can be integrated.
  • the energy storage module 3 shown in FIG. 4 differs from the energy storage module 3 shown in FIG. 3 only in that the coupling device 9 has two instead of four coupling elements 7, 8 which are in a half-bridge circuit instead of in
  • the active switching elements 7a and 8a and the coupling elements 7 and 8 as a power semiconductor switch, for example in the form of IGBTs (insulated gate bipolar transistor), JFETs (junction field-effect transistor) or as MOSFETs (Metal Oxide Semiconductor Field -Effect transistor).
  • IGBTs insulated gate bipolar transistor
  • JFETs junction field-effect transistor
  • MOSFETs Metal Oxide Semiconductor Field -Effect transistor
  • Control in steps of a negative maximum value up to a positive maximum value can be varied.
  • the gradation of the voltage level results in this case depending on the gradation of the individual energy storage cell modules 5. For example, a mean voltage value between two by the gradation of
  • Energy storage module 3 provides on average over time a module voltage which may have a value between zero and the maximum possible module voltage determined by the energy storage cells 5a to 5n. The activation of the
  • Coupling elements 7, 8 can, for example, make a control device 6, which is designed to perform, for example, a current control with a lower-voltage control, so that a gradual connection or disconnection of individual energy storage modules 3 can take place.
  • Output terminals 1 a, 1 b, 1 c are connected, wherein the phase lines 2a, 2b, 2c in turn can be connected to phase terminals of the electric machine 2.
  • the electric machine 2 may be a three-phase electric machine, for example a three-phase rotary field machine.
  • Phase voltage u at a second output terminal 1 b, for example, the
  • Phase voltage v and at a third output terminal 1 c for example, the phase voltage w are generated.
  • the phase voltages u, v and w which have a relative phase shift of 120 ° to one another, can be fed, for example via phase lines 2a, 2b, 2c in the phase terminals of the three-phase electric machine 2 to ensure a three-phase power supply of the electric machine 2.
  • the space vectors are of different lengths. As shown by way of example in Fig. 5, the space vector u is that of the lowest possible maximum output voltage
  • phase current can be expressed as the relationship between the two other phase currents.
  • pairwise differential voltages between each two of the three phase terminals of the electric machine 2 It is therefore possible to provide a three-phase supply voltage for an electric machine 2 only using two branches of energy supply in an energy storage device.
  • the procedure can be as follows: First, we determined the power supply branch with the lowest possible maximum output voltage, in the case of FIG. 5 the power supply branch with the phase voltage u. Finally, the power supply branch with the phase voltage u.
  • Coupling means 9 of the two other power supply branches so controlled that the output voltage of the sum of a symmetrical voltage component us and an asymmetric voltage component, among others, is formed.
  • Voltage component us is determined by the value
  • Voltage component corresponds to the amount of the difference of the amounts of the second smallest possible maximum output voltage
  • the symmetrical voltage components us of the individual power supply branches follow the conventional drive method and therefore each have a pairwise phase offset of 120 ° to each other.
  • asymmetrical voltage components of the two power supply branches each having the higher maximum possible output voltages, is 60 ° to pass through the differential voltage of the asymmetrical voltage components in the phase line of the power supply branch with the lowest possible maximum
  • Output voltages can accordingly the phase voltage of the
  • the more efficient power supply branches may be the lack of power of the present
  • FIG. 6 shows a schematic illustration of a space vector diagram with space vectors u, v 'and w' corresponding to a virtual star point shift sv (length 58% of the
  • Space vector u, v 'and w' a three-phase power supply system in which a three-phase symmetrical rotating field with improved voltage level
  • Figure 7 shows a schematic representation of a method 20 for driving a
  • Energy storage device for example, an energy storage device 1 as shown in Fig. 2, which is designed to generate a three-phase supply voltage.
  • the method 10 comprises in a first step 21 a determination of the one
  • Output voltage has.
  • this may be a power supply branch of the energy storage device 1, in which most of the energy storage modules 3 are deactivated due to defects or failures, or in which the
  • Energy storage modules 3 have reached on average the highest degree of aging. This power supply branch with the lowest possible maximum output voltage is driven to generate the phase voltage in normal operation.
  • the other two power supply branches are then controlled in step 22 so that their output voltage from the sum of a symmetrical Voltage component whose amount corresponds to the lowest possible maximum output voltage, and an asymmetrical voltage component whose magnitude of the difference of the amounts of the second smallest possible maximum output voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un dispositif d'accumulation d'énergie (1) servant à produire une tension d'alimentation triphasée. Ledit dispositif comprend trois branches d'alimentation en énergie montées en parallèle, lesquelles sont couplées respectivement entre une borne de sortie (1a, 1b, 1c) et une barre de potentiel de référence (4), chacune des branches d'alimentation en énergie comportant une pluralité de modules d'accumulation d'énergie (3) montés en série, lesquels comprennent respectivement : un module de cellule d'accumulation d'énergie (5), lequel comporte au moins une cellule d'accumulation d'énergie (5a, 5n), et un dispositif de couplage (9) muni d'éléments de couplage (7, 8), lesquels sont mis au point pour commuter le module de cellule d'accumulation d'énergie (5) de manière sélective dans la branche d'alimentation en énergie respective ou pour ponter ce dernier dans la branche d'alimentation en énergie respective. Le dispositif d'accumulation d'énergie comprend en outre un dispositif de commande (6), lequel est mis au point pour définir la branche d'alimentation en énergie qui présente la tension de sortie maximale la plus faible possible, et pour commander les dispositifs de couplage (9) des deux autres branches d'alimentation en énergie, de sorte que la tension de sortie de ces dernières est formée de la somme d'une part de tension symétrique, dont la valeur correspond à la tension de sortie maximale la plus faible possible, et d'une part de tension asymétrique, dont la valeur correspond à la différence des valeurs de la tension de sortie maximale la plus faible possible des branches d'alimentation en énergie et de la tension de sortie maximale la plus faible possible, le déphasage entre les parts de tension symétriques des deux autres branches d'alimentation en énergie atteignant 120° et le déphasage entre les parts de tension asymétriques des deux autres branches d'alimentation en énergie atteignant 60°.
PCT/EP2015/050042 2014-01-31 2015-01-05 Dispositif d'accumulation d'énergie, système comprenant un dispositif d'accumulation d'énergie et procédé permettant de commander un dispositif d'accumulation d'énergie Ceased WO2015113780A1 (fr)

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Application Number Priority Date Filing Date Title
DE102014201711.4 2014-01-31
DE102014201711.4A DE102014201711B4 (de) 2014-01-31 2014-01-31 Energiespeichereinrichtung, System mit Energiespeichereinrichtung und Verfahren zum Ansteuern einer Energiespeichereinrichtung

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WO2017080959A1 (fr) 2015-11-09 2017-05-18 Abb Technology Oy Convertisseur électrique et procédé de commande
CN106740146A (zh) * 2016-11-29 2017-05-31 芜湖市吉安汽车电子销售有限公司 一种新能源汽车电池自转化系统

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DE102020127328A1 (de) 2020-10-16 2022-04-21 Universität Rostock, Köperschaft des öffentlichen Rechts Multilevel-Umwandler zum Wandeln von elektrischer Energie

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