WO2017060444A1 - Agencement et procédé pour transformer une tension - Google Patents

Agencement et procédé pour transformer une tension Download PDF

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Publication number
WO2017060444A1
WO2017060444A1 PCT/EP2016/074027 EP2016074027W WO2017060444A1 WO 2017060444 A1 WO2017060444 A1 WO 2017060444A1 EP 2016074027 W EP2016074027 W EP 2016074027W WO 2017060444 A1 WO2017060444 A1 WO 2017060444A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy
transformer
recuperation device
power network
traction power
Prior art date
Application number
PCT/EP2016/074027
Other languages
English (en)
Inventor
Artur KUCYBALA
Jacques Poulin
Perry SCHUGART
Thierry LASSUS
Patrycjusz Antoniewicz
Original Assignee
Abb Schweiz Ag
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 Schweiz Ag filed Critical Abb Schweiz Ag
Publication of WO2017060444A1 publication Critical patent/WO2017060444A1/fr

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Classifications

    • 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
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/02—Electric propulsion with power supply external to the vehicle using dc motors
    • B60L9/04—Electric propulsion with power supply external to the vehicle using dc motors fed from dc supply lines
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • 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
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
    • B60L9/30—Electric propulsion with power supply external to the vehicle using ac induction motors fed from different kinds of power-supply lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
    • B60M3/06—Arrangements for consuming regenerative power
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Definitions

  • the invention relates to an arrangement comprising a direct current, DC, traction power network adapted for supplying electrical energy to a rail system, an energy recuperation device adapted for returning surplus electrical energy of the DC traction power network into an AC traction network and/or an energy storage system adapted for storing surplus electrical energy of the DC traction power network and for feeding back the stored electrical energy into the DC traction power network.
  • the invention further relates to a respective method for transforming a voltage, comprising the DC traction power network and the energy recuperation device and/or the energy storage system.
  • DC traction power networks also referred to as DC traction grids.
  • DC electricity grids for supplying direct current to electrified rail system, for example to rail networks, trains, tramways and the like.
  • three phase alternating current from an AC traction network is converted by power transformers, rotary transformers, static inverters, directional diode rectifiers and/or thyristors into a voltage and a direct current required by the trains.
  • EP 2 693 598 A1 describes that power of electrical sub-stations that
  • EP 2 255 992 A1 describes an electric railway power-supply system not requiring vast area for installation, excellent in rapid charge-discharge characteristic, and low in manufacturing cost.
  • the object is solved by an arrangement comprising a direct current, DC, traction power network adapted for supplying electrical energy to a rail system, a transformer, and an energy recuperation device adapted for returning surplus electrical energy of the DC traction power network into an AC traction network and/or an energy storage system adapted for storing surplus electrical energy of the DC traction power network and for feeding back the stored electrical energy into the DC traction power network, whereby the transformer is electrically connected in series between the DC traction power network and the energy recuperation device and/or the energy storage system, and/or, comprising the energy recuperation device electrically connected in series between the DC traction power network and the transformer.
  • Returning surplus electrical energy into the AC traction network comprises in the context of the application returning said surplus electrical energy into an AC medium voltage grid as well, for example directly or via a recuperation device transformer as described below.
  • the arrangement comprises the energy storage system, whereby the energy storage system comprises an AC/DC converter having an AC side and a DC side, and the AC side is electrically connected to the transformer or comprising the energy recuperation device, whereby the energy storage system is electrically connected in series between the transformer and the energy recuperation device such that the AC side of the AC/DC converter is electrically connected to the transformer and the DC side is electrically connected to the energy recuperation device.
  • the arrangement comprises the energy recuperation device electrically connected in series between the DC traction power network and the transformer or comprises a DC/AC converter having a DC side connected to the DC traction power network and an AC side connected to the transformer and further comprises an AC/DC converter having an AC side connected to the transformer and a DC side connected to the energy recuperation device and/or the energy storage system such that the transformer is connected in series between the energy recuperation device or the DC/AC converter and the AC/DC converter.
  • an energy recuperation device and/or an energy storage system having a fixed operating voltage can be easily employed with a DC traction power network having in contract a fixed operating voltage.
  • a transformer having a conversion ratio between its primary side and secondary side of 2 an energy recuperation device and/or an energy storage system designed to operate at a fixed DC voltage of 1 ,5kV can be electrically connected to a DC traction power network operating at a DC voltage of 3kV.
  • Providing a double stage converter is advantageous as such double stage converter has an inherent energy storage capacity and thus increases the amount of energy returned into the DC power traction network.
  • the DC/AC converter and the energy storage system are preferably provided as an energy storage system utilizing said energy storage capacity.
  • the arrangement comprises the energy storage system
  • the energy storage system comprises a super capacitor and/or a battery connected to the DC side and/or comprises a plurality of energy storage systems connected in series and/or in parallel.
  • Said super capacitor and/or a battery can be provided as any suitable capacitor respectively battery adapted for storing the surplus electrical energy of the rail transportation system.
  • an energy consumption of the rail system can be advantageously decreased up to 30 percent.
  • the energy storage system comprises a useable storage energy per cabinet respective device of 6MJ, 8MJ or 10MJ respectively a useable energy 16kWh, 20kWh or 25kWh.
  • Connecting a plurality of energy storage systems in series and/or in parallel advantageously increases overall storage capacity and in turn further decreases energy consumption of the rail system.
  • the arrangement comprises the energy recuperation device and a recuperation device transformer adapted for connecting to the AC traction network
  • the recuperation device transformer is preferably provided as an autotransformer, comprises a plurality of energy recuperation devices connected in series and/or in parallel and/or the transformer is provided as a high, medium, line and/or multi-winding transformer.
  • the transformer is preferably provided in an alternative embodiment as recuperation device transformer.
  • the energy recuperation device is directly connected to the AC traction network.
  • recuperation device transformer may comprise a conversion ratio of a primary side to a secondary side of ⁇ 1.1. Thereby the primary side preferably faces towards the DC traction power network. According to an especially preferred embodiment the conversion ratio is ⁇ 2, > 3, ⁇ 4, > 6, > 8 or > 10. With a conversion ratio of 4, for example, a DC traction power network operating at a DC voltage of 3kV can be connected via the transformer to an energy recuperation device and/or an energy storage system operating at a DC voltage of 750V.
  • the DC voltage corresponding to the DC traction power network is 1 ,5kV, 3kV or 6kV and/or a voltage corresponding to the energy recuperation device and/or the energy storage system is 0,75kV, 1 ,5kV, 3kV or 6kV.
  • the arrangement comprises the
  • the energy recuperation device comprises a converter adapted for converting a DC voltage into an AC voltage and comprising a plurality of inverter cells, and each inverter cell comprises a self-commutating inverter semiconductor device.
  • the self- commutating inverter semiconductor device is preferably provided as an insulated-gate bipolar transistor device (IGBT), as a bi-mode insulated- gate bipolar transistor device (BIGT), as a reverse-conducting IGBT, as an integrated gate-commutated thyristor device (IGCT), and/or a silicon carbide based unipolar or bipolar switching device.
  • the IGBT is provided as a bi-mode insulated-gate bipolar transistor device (BIGT).
  • the converter is provided as a H-bridge topology comprising a plurality inverter cells and/or is provided as a 4Q voltage source converter. More preferably, the converter is provided according to norm IEC 62501 : 2009.
  • the DC traction power network is provided as a railway electrification system preferably for providing electrical energy to the rail system, a train, a tram and/or a trolleybus.
  • the DC traction power is electrically connected to the rail system and thereby to the train, tram respectively trolleybus.
  • the railway electrification system comprises a contact line and a rail, whereby the rail and/or the contact line are electrically connected in regular or irregular intervals along their extension to the DC traction power network.
  • the rail and/or the contact line can be provided as any rail respectively contact line known from prior art, for example as flat-bottom steel rails respectively as an overhead line or overhead wire for
  • the object of the invention is further solved by a method for transforming a voltage, comprising a direct current, DC, traction power network adapted for supplying electrical energy to a rail system, and an energy recuperation device adapted for returning surplus electrical energy of the DC traction power network into an AC traction network and/or an energy storage system adapted for storing surplus electrical energy of the DC traction power network and for feeding back the stored electrical energy into the DC traction power network, and comprising the step of: transforming, by a transformer electrically connected in series between the DC traction power network and the energy recuperation device and/or the energy storage system, a first voltage corresponding to the DC traction power network into a second voltage corresponding to the energy recuperation device and/or to the energy storage system, or, whereby the energy recuperation device comprises a DC side electrically connected to the DC traction power network and an AC side, and comprising the step of: transforming, by a transformer electrically connected in series between the energy
  • recuperation device and the AC traction network (5) a first voltage corresponding to the AC side into a second voltage corresponding to the AC traction network.
  • recuperation device and/or the energy storage system operating on a fixed, second voltage can be connected via the transformer in a very flexible manner to any DC traction power network operating on the first voltage.
  • a conversion ratio between the first voltage and/to the second voltage is ⁇ 2, > 3, ⁇ 4, > 6, ⁇ 8 or > 10.
  • the first voltage is 1 ,5kV, 3kV or 6kV and/or the second voltage is 0,75kV, 1 ,5kV, 6kV.
  • the method comprises an AC/DC converter having an AC side and a DC side and the energy storage system, whereby the AC/DC converter is electrically connected in series between the transformer and the energy storage system such that the AC side of the AC/DC converter is connected to the transformer and the DC side is connected to the energy storage system.
  • the method comprises the energy recuperation device electrically connected in series between the DC traction power network and the transformer or comprising a DC/AC converter having a DC side connected to the DC traction power network and an AC side connected to the transformer and further comprising an AC/DC converter having an AC side connected to the transformer and a DC side connected to the energy recuperation device and/or the energy storage system such that the transformer is connected in series between the energy
  • recuperation device or the DC/AC converter and the AC/DC converter.
  • the method comprises the energy storage system, whereby the energy storage system comprises a super capacitor and/or a battery and/or comprising a plurality of energy storage systems connected in series and/or in parallel.
  • the method comprises the energy recuperation device and a recuperation device transformer adapted for connecting to the AC traction network, whereby the recuperation device transformer is preferably provided as an autotransformer, comprising a plurality of energy recuperation devices connected in series and/or in parallel and/or whereby the transformer is provided as a high, medium, line and/or multi-winding transformer.
  • FIG. 1 shows an arrangement according to a first preferred embodiment of the invention in a schematic view
  • FIG. 2 shows an arrangement according to a third preferred embodiment of the invention in a schematic view
  • FIG. 3 shows the arrangement of Fig. 2 in a more detailed view
  • FIG. 4 shows an arrangement according to a fourth preferred embodiment of the invention in a schematic view.
  • FIG. 1 shows an arrangement according to a first preferred embodiment of the invention in a schematic view, comprising a direct current, DC, traction power network 1 , a transformer 14 and an energy recuperation device 3.
  • the transformer 14 is electrically connected in series between the DC traction power network 1 and the energy recuperation device 3.
  • the transformer 14 provides galvanic insulation between the DC traction power network 1 and the energy recuperation device 3.
  • the DC traction power network 1 operating at a first voltage is adapted for supplying electrical energy to a rail system 4.
  • the DC traction power network 1 is electrically connected to the rail system 4 and is provided as a railway electrification system 1 1 for providing electrical energy to a train 13, shown in Fig. 3, of said rail system 4 via a power line, rail or the like.
  • the train 13 thus receives via the power line electrical energy.
  • the energy recuperation device 3 is adapted for returning surplus electrical energy of the rail system 4 respectively of the DC traction power network 1 into a connected AC traction network 5.
  • the energy recuperation device 3 returns surplus braking energy of the train 13 back to the AC traction network 5, thus reducing the total energy consumption of the rail system 4.
  • the energy recuperation device 3 recuperates the surplus braking energy from the DC traction power network 1 by feeding the energy back to the AC traction network 5.
  • the energy recuperation device 3 comprises a converter, not shown, for converting a DC voltage to a AC voltage.
  • the converter is adapted for converting a DC voltage corresponding to the energy recuperation device 3 into an AC voltage corresponding to the AC traction network 5. Therefore, an AC side of the energy recuperation device 3 is connected to the AC traction network 5 and a DC side is connected to the transformer 14 operating at said second voltage.
  • the converter comprises a plurality of inverter cells. Each inverter cell comprises a self-commutating inverter semiconductor device. In particular, each converter is provided as a H-bridge topology comprising the plurality inverter cells.
  • Alternative configurations are possible as well, for example, as a 4Q voltage source converter and/or at least two half-bridges each comprising two self-commutating inverter semiconductor devices.
  • the self- commutating inverter semiconductor devices are provided as IGBTs.
  • the transformer 14 has a conversion ratio between the first voltage and/to the second voltage of 2. Beside that other conversion ratios are possible, such as, for example, 3, 4, 6, 8 or > 10.
  • the first voltage corresponds to the voltage of the DC traction power network 1 and the second voltage corresponds the voltage of the energy recuperation device 3.
  • the transformer 14 transforms the first voltage of 3kV to the second voltage of 1 ,5kV for operating the energy recuperation device 3.
  • the first voltage corresponding to the DC traction power network 1 can be 1 ,5kV or 6kV and, with said conversion ratio of 2, the second voltage corresponding to the energy recuperation device 3 is 0,75kV or 3kV, respectively.
  • Fig. 2 shows a second preferred embodiment, comprising both the energy recuperation device 3 and the energy storage system 6.
  • the energy storage system 6 comprises a super capacitor and/or a battery 12 and a DC/AC converter 17, as described below.
  • the energy recuperation device 3 and the energy storage system 6 are both connected to the transformer 14.
  • the transformer 14 thus it is possible to return surplus electrical energy of the rail transportation system 4 into the AC traction network 5 and to feed back electrical energy into the DC traction power network 1.
  • FIG. 3 shows the embodiment of Fig. 2 in a more detailed view.
  • a train 13 is shown as part of the rail system 4, electrically connected via a rail electrification system i.e. via a rail and contact line connected to the DC traction power network 1.
  • An AC medium voltage (MV) grid 15 feeds electrical energy via a MV transformer 15a to the AC traction network 5 and via a feeding converter 15b to the DC traction power network 1. This way an AC voltage of the AC MV grid 15 is transformed into voltage suitable for powering the train 13, converted from AC to DC by the feeding converter 15b and fed into the DC traction power network 1.
  • MV medium voltage
  • the transformer 14 is connected in series between an AC/DC converter 16 and the DC/AC converter 17.
  • the AC/DC converter 16 has an AC side connected to a primary side of the transformer 14 and a DC side connected to the DC traction power network 1.
  • the DC/AC converter 17 has a DC side connected to the energy recuperation device 3 and the super capacitor and/or the battery 12, and has an AC side connected to a secondary side of the transformer 14.
  • the transformer 14 is provided as a high, medium or line frequency transformer 14 and comprises said conversion ratio between its first side and/to second side.
  • the energy recuperation device 3 is either directly connected to the AC traction network 5, as indicated by the dashed line on the left showing various configurations, or connected a recuperation device transformer 18 to the AC traction network 5 or the AC MV grid 15.
  • the recuperation device transformer 18 is provided as an autotransformer or as a (standard) transformer as shown in the middle. While not shown, a plurality of energy recuperation devices 3 can be provided connected in series and/or in parallel. Further, the DC/AC converter 17 can be provided as single or double stage converter and/or may comprise an additional DC/DC stage.
  • FIG. 4 shows a further embodiment in a schematic view, wherein the
  • the energy recuperation device 3 comprising a DC to AC converter, is electrically connected in series between the DC traction power network 1 and the transformer 14.
  • the transformer 14, as shown on the right side in Fig. 4, is this way connected in series between the energy recuperation device 3 and the energy storage system 6.
  • the recuperation device transformer 18 can be provided as well, being connected with its primary side between the transformer 14 and the AC/DC converter 17 or between the energy recuperation device 3 and the transformer 14, and connected with its secondary side to the AC traction network 5 or the AC MV grid 15, as indicated by the dashed lines in the middle.
  • the transformer 14 can be provided instead of the recuperation device transformer 18 such that the transformer 14 is connected in series between the energy recuperation device 3 and the AC traction network 5 or the AC MV grid 15, as indicated by the dashed line on the left side. This way the transformer 14 transforms a first voltage corresponding to an AC side of the energy recuperation device 3 into a second voltage corresponding to the AC traction network 5 respectively to the AC MV grid 15.
  • the transformer 14 transforms a first voltage corresponding to an AC side of the energy recuperation device 3 into a second voltage corresponding to the AC traction network 5 respectively to the AC MV grid 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un agencement, qui comprend un réseau d'énergie de traction en courant continu, c.c. (1), apte à fournir de l'énergie électrique à un système de rails (4), un transformateur (14), et un dispositif de récupération d'énergie (3) apte à renvoyer un surplus d'énergie électrique du réseau d'énergie de traction en courant continu (1) dans un réseau de traction en courant alternatif (5) et/ou dans un système de stockage d'énergie (6) apte à stocker un surplus d'énergie électrique du réseau d'énergie de traction en courant continu (1) et à renvoyer l'énergie électrique stockée dans le réseau d'énergie de traction en courant continu (1), ainsi, le transformateur (14) est électriquement connecté en série entre le réseau d'énergie de traction en courant continu (1) et au dispositif de récupération d'énergie (3) et/ou au système de stockage d'énergie (6), et/ou lequel comprend le dispositif de récupération d'énergie (3) électriquement connecté en série entre le réseau d'énergie de traction en courant continu (1) et le transformateur (14).
PCT/EP2016/074027 2015-10-07 2016-10-07 Agencement et procédé pour transformer une tension WO2017060444A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15188736 2015-10-07
EP15188736.1 2015-10-07

Publications (1)

Publication Number Publication Date
WO2017060444A1 true WO2017060444A1 (fr) 2017-04-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3686044A1 (fr) 2019-01-23 2020-07-29 ALSTOM Transport Technologies Sous-station cc de traction pour fournir au moins un véhicule
EP3904151A1 (fr) * 2020-04-30 2021-11-03 ABB Schweiz AG Système d'alimentation électrique pour flux d'énergie bidirectionnel
EP4087084A1 (fr) 2021-05-07 2022-11-09 ABB Schweiz AG Système de stockage d'énergie

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2255992A1 (fr) * 2008-02-29 2010-12-01 Kawasaki Jukogyo Kabushiki Kaisha Système d'alimentation pour chemin de fer électrique
EP2693598A1 (fr) * 2011-03-31 2014-02-05 Administrador De Infraestructuras Ferroviarias (ADIF) Système et procédé de commande de charge de batteries à partir d'un système électrique ferroviaire
EP2837525A2 (fr) * 2013-08-12 2015-02-18 Kabushiki Kaisha Toshiba Système d'alimentation en énergie de wagon électrique, dispositif d'alimentation électrique et dispositif de stockage d'énergie
WO2015079544A1 (fr) * 2013-11-28 2015-06-04 三菱電機株式会社 Dispositif d'alimentation électrique de bâtiment de gare
WO2015118917A1 (fr) * 2014-02-10 2015-08-13 株式会社明電舎 Dispositif convertisseur de régénération pour voie ferrée électrique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2255992A1 (fr) * 2008-02-29 2010-12-01 Kawasaki Jukogyo Kabushiki Kaisha Système d'alimentation pour chemin de fer électrique
EP2693598A1 (fr) * 2011-03-31 2014-02-05 Administrador De Infraestructuras Ferroviarias (ADIF) Système et procédé de commande de charge de batteries à partir d'un système électrique ferroviaire
EP2837525A2 (fr) * 2013-08-12 2015-02-18 Kabushiki Kaisha Toshiba Système d'alimentation en énergie de wagon électrique, dispositif d'alimentation électrique et dispositif de stockage d'énergie
WO2015079544A1 (fr) * 2013-11-28 2015-06-04 三菱電機株式会社 Dispositif d'alimentation électrique de bâtiment de gare
WO2015118917A1 (fr) * 2014-02-10 2015-08-13 株式会社明電舎 Dispositif convertisseur de régénération pour voie ferrée électrique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3686044A1 (fr) 2019-01-23 2020-07-29 ALSTOM Transport Technologies Sous-station cc de traction pour fournir au moins un véhicule
US11128138B2 (en) 2019-01-23 2021-09-21 Alstom Transport Technologies DC traction sub-station for supplying at least one vehicle
EP3904151A1 (fr) * 2020-04-30 2021-11-03 ABB Schweiz AG Système d'alimentation électrique pour flux d'énergie bidirectionnel
WO2021219362A1 (fr) * 2020-04-30 2021-11-04 Abb Schweiz Ag Système d'alimentation électrique pour flux d'énergie bidirectionnel
CN115515818A (zh) * 2020-04-30 2022-12-23 Abb瑞士股份有限公司 用于双向能量流的供电系统
EP4087084A1 (fr) 2021-05-07 2022-11-09 ABB Schweiz AG Système de stockage d'énergie
WO2022234503A1 (fr) 2021-05-07 2022-11-10 Abb Schweiz Ag Système de stockage d'énergie

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