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EP1880460A2 - Uninterrupted power supply circuit - Google Patents

Uninterrupted power supply circuit

Info

Publication number
EP1880460A2
EP1880460A2 EP06743812A EP06743812A EP1880460A2 EP 1880460 A2 EP1880460 A2 EP 1880460A2 EP 06743812 A EP06743812 A EP 06743812A EP 06743812 A EP06743812 A EP 06743812A EP 1880460 A2 EP1880460 A2 EP 1880460A2
Authority
EP
European Patent Office
Prior art keywords
fuel cell
battery
source
circuit according
circuit
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.)
Withdrawn
Application number
EP06743812A
Other languages
German (de)
French (fr)
Inventor
Pierre Charlat
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1880460A2 publication Critical patent/EP1880460A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/30—The power source being a fuel cell
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/10—Applications of fuel cells in buildings
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/40—Fuel cell technologies in production processes

Definitions

  • the present invention relates to an uninterrupted power supply circuit.
  • the invention finds a particularly advantageous application in the field of supplying DC equipment from an AC power source.
  • a conventional architecture consists in using a low-voltage AC source 10 supplied by the local electrical network, that is to say downstream of a high-voltage / low-voltage transformer. .
  • AC / DC converters 21, 22 enable, on the one hand, the DC power supply of the electronic equipment 1, 2, and, on the other hand, the charging of batteries 31, 32 connected to the power bus.
  • some ancillary utilities 3 remain supplied with alternating current directly on the local network, while other equipment 4 are supplied with alternating current by means of DC / AC converters, such as the converter. 40 in series with AC / DC converter 22.
  • the technical problem to be solved by the object of the present invention is to provide an uninterruptible power supply circuit from an AC power source, which would make it possible to avoid or at least limit the use batteries for powering electrical equipment in case of interruption of the AC power supply, or even in nominal mode.
  • said circuit comprises a fuel cell backup system characterized in that the emergency system comprises:
  • a fuel cell starting battery connected to said alternating current source on an input terminal of the emergency system, said starter battery and the fuel cell being connected in parallel with an output terminal of the separate system of the input terminal.
  • a switch is disposed on said output terminal.
  • a switch is arranged between the fuel cell and said output terminal. It will also be seen later that this solution has the advantage of avoiding the use of any battery to power the electronic equipment, the DC power supply being in this case entirely provided by the circuit according to the invention whether in nominal mode or during an interruption of the AC power supply.
  • the starter battery is connected to the source (10) of alternating current via an AC / DC AC / DC converter,
  • the starter battery and the fuel cell are connected to the output terminal of the fuel cell backup system via respective DC / DC converters (512, 522),
  • a filtering capacity is placed at the output of the starter battery and the fuel cell
  • the circuit comprises a backup battery located downstream of the output terminal on a supply line of electronic equipment from the source,
  • the fuel cell backup system is kept energized by the AC power source
  • the starter battery is maintained by the AC power source when said source is running and by the fuel cell when the latter is turned on, especially in case of failure of the source.
  • Figure 1 is a diagram of a power plant according to the prior art.
  • Fig. 2 is a diagram showing an installation comprising an uninterruptible power supply circuit according to a first embodiment of the invention.
  • Figure 3 is a diagram showing an installation comprising an uninterruptible power supply circuit according to a second embodiment of the invention.
  • FIG. 2 is shown an installation for supplying electrical equipment, including electronic.
  • some electronic equipment 1, 2 must be supplied with power continuous, for example under 48 V for telecommunications equipment.
  • these electronic equipments are powered by means of an AC / DC converter 21 whose input terminal 211 is connected to the AC source and whose terminal 212 of output is connected to the power bus of the installation.
  • Other equipment 3, 4 are supplied with alternating current respectively by the local electrical network or via a DC / AC converter 40 connected to the output terminal 212 of the AC / DC converter 21.
  • the installation of Figure 2 further comprises an uninterrupted power supply circuit 50 which comprises, on the one hand, a battery 51 connected to the source 10 of alternating current on an input terminal 501 of the circuit 50 by the intermediate AC / DC 511 AC / DC converter and secondly a fuel cell 52.
  • the battery 51 of the fuel cell backup system 50 is provided in particular for starting the battery 52.
  • the battery 51 and the fuel cell 52 are respectively connected to the output terminal 502 of the circuit 50 via DC / DC converters DC / DC 512 and 522.
  • a filtering capacitor 504 at 100 Hz is placed at the output of the battery 51 and the fuel cell 52.
  • a switch 503 is disposed on the output terminal 502 of the circuit 50 which then operates in "charger" mode.
  • FIG. 2 uses only one backup battery 31 for powering the equipment, which represents a significant advantage over the installation of FIG. 1 for which a plurality of batteries was necessary.
  • the switch 503 In nominal mode, the switch 503 is open and the various equipment are powered from the AC source. In case of failure of the AC power supply, the switch 503 is closed and the DC power supply of the electronic equipment 1, 2 and AC of the electrical equipment 4 is provided by the circuit or system 50 emergency power supply without interruption.
  • the batteries 31 and 51 serve as a buffer at the start of the circuit 50 during the power switchover.
  • FIG. 3 represents a second embodiment in which a switch 503 'is arranged between the fuel cell 52 and the output terminal 502 of the uninterrupted supply circuit 50'.
  • the supply circuit 50 'of FIG. 3 provides only the supply of the equipment 2, 3, 4 either at rated speed or when the power supply is interrupted. alternating current. It is understood, with all the advantages that this represents, that in this case, no battery is necessary for the emergency power supply of the equipment 2, 3, 4 since these are permanently supplied by the circuit 50 'and that no interruption of power can therefore occur during a break of the AC power supply. In nominal mode, the switch 503 'is open and the circuit 50' uninterruptible power supply is still energized, but without the fuel cell is powered.
  • the battery 51 may be of low capacity since it only has to operate for a few seconds of the start of the circuit 50 ', which is still energized and whose conditions "ready state" are maintained by taking a part of the power that passes through the circuit 50 '.
  • the switch 506 of the short circuit being closed in nominal mode and open during an interruption.
  • the invention thus makes it possible to undersize the circuit backup batteries as well as the starter battery of the battery.
  • the invention even possibly to get rid of backup batteries or replace them with capacity.
  • the fuel cell 52 is advantageously a proton exchange membrane (PEM) cell fed, on the one hand, with air and, on the other hand, hydrogen stored under high pressure in tanks or bottles or under low pressure in storage containers. hydrides.
  • PEM proton exchange membrane

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Fuel Cell (AREA)

Abstract

The invention relates to an uninterrupted power supply circuit starting from an alternating current source (10) comprising a fuel cell back-up system (50; 50'), characterized in that the back-up system comprises: a fuel cell (52); a battery (51) for starting the fuel cell (52) joined to said alternating current source on an input terminal (501) of the back-up system (50, 50'), said starting battery (51) and fuel cell (52) being connected in parallel to an output terminal (502) of the system (50, 50') that is distinct from the input terminal.

Description

CIRCUIT D'ALIMENTATION SANS INTERRUPTION POWER CIRCUIT WITHOUT INTERRUPTION
La présente invention concerne un circuit d'alimentation sans interruption. L'invention trouve une application particulièrement avantageuse dans le domaine de l'alimentation d'équipements en courant continu à partir d'une source de courant alternatif.The present invention relates to an uninterrupted power supply circuit. The invention finds a particularly advantageous application in the field of supplying DC equipment from an AC power source.
Dans de nombreuses installations industrielles, certaines applications, telles que des baies de télécommunications, sont alimentées par une tension continue permettant le fonctionnement des équipements électroniques, sous une tension continue de 48 V dans le cas précité des télécommunications.In many industrial installations, certain applications, such as telecommunications bays, are powered by a DC voltage allowing the operation of electronic equipment, under a DC voltage of 48 V in the aforementioned case of telecommunications.
Une architecture classique, dont un exemple est donné sur la figure 1 , consiste à utiliser une source 10 de courant alternatif basse tension fournie par le réseau électrique local, c'est-à-dire en aval d'un transformateur haute tension/basse tension. Des convertisseurs alternatif/continu (AC/DC) 21 , 22 permettent, d'une part, l'alimentation en courant continu des équipements électroniques 1 , 2, et, d'autre part, la charge de batteries 31 , 32 connectées sur le bus d'alimentation. En parallèle, certains équipements utilitaires annexes 3 restent alimentés en courant alternatif directement sur le réseau local, alors que d'autres équipements 4 sont alimentés en courant alternatif par l'intermédiaire de convertisseurs continu/alternatif (DC/AC), tel que le convertisseur 40 en série avec le convertisseur AC/DC 22.A conventional architecture, an example of which is given in FIG. 1, consists in using a low-voltage AC source 10 supplied by the local electrical network, that is to say downstream of a high-voltage / low-voltage transformer. . AC / DC converters 21, 22 enable, on the one hand, the DC power supply of the electronic equipment 1, 2, and, on the other hand, the charging of batteries 31, 32 connected to the power bus. In parallel, some ancillary utilities 3 remain supplied with alternating current directly on the local network, while other equipment 4 are supplied with alternating current by means of DC / AC converters, such as the converter. 40 in series with AC / DC converter 22.
Lorsque l'alimentation en courant alternatif par le réseau est interrompue, l'alimentation en courant continu des équipements de la baie de télécommunications, par exemple, est assurée par les batteries 31 , 32. La continuité d'alimentation en courant continu est ainsi garantie en cas d'interruption du réseau.When the AC power supply via the network is interrupted, the DC power supply of the equipments of the telecommunications bay, for example, is ensured by the batteries 31, 32. The continuity of DC power supply is thus guaranteed. in case of interruption of the network.
Cependant, cette solution connue présente l'inconvénient d'une autonomie limitée à celle que permettent les batteries. De plus, les batteries sont sensibles aux différentes conditions de température et le coût de leur entretien reste élevé. Les documents DE10243213 et US2004/053093 décrivent des circuits d'alimentation sans interruption à partir d'une source de courant alternatif utilisant une pile à combustible.However, this known solution has the disadvantage of an autonomy limited to that allowed by batteries. In addition, the batteries are sensitive to different temperature conditions and the cost of their maintenance remains high. Documents DE10243213 and US2004 / 053093 describe uninterrupted power supply circuits from an AC power source using a fuel cell.
Ces systèmes connus nécessitent cependant l'utilisation d'une ou plusieurs batteries principales de secours destinées notamment à assurer le démarrage de la pile à combustible ou pour la maintenir en charge de cette dernière. Cette solution présente les inconvénients suivants : nécessité de prévoir une ou des batteries dimensionnées en conséquence.These known systems, however, require the use of one or more main backup batteries intended in particular for starting the fuel cell or to maintain it in charge of the latter. This solution has the following disadvantages: need to provide one or more batteries dimensioned accordingly.
Aussi, le problème technique à résoudre par l'objet de la présente invention est de proposer un circuit d'alimentation sans interruption à partir d'une source de courant alternatif, qui permettrait d'éviter ou, du moins, de limiter l'utilisation de batteries pour alimenter des équipements électriques en cas d'interruption de l'alimentation en courant alternatif, voire même en régime nominal. Une solution au problème technique posé consiste, selon la présente invention, en ce que ledit circuit comporte un système de secours à pile à combustible caractérisé en ce que le système de secours comprend :Also, the technical problem to be solved by the object of the present invention is to provide an uninterruptible power supply circuit from an AC power source, which would make it possible to avoid or at least limit the use batteries for powering electrical equipment in case of interruption of the AC power supply, or even in nominal mode. A solution to the technical problem posed, according to the present invention, in that said circuit comprises a fuel cell backup system characterized in that the emergency system comprises:
- une pile à combustible,- a fuel cell,
- une batterie de démarrage de la pile à combustible reliée à ladite source de courant alternatif sur une borne d'entrée du système de secours, ladite batterie de démarrage et la pile à combustible étant reliées en parallèle à une borne de sortie du système distincte de la borne d'entrée.a fuel cell starting battery connected to said alternating current source on an input terminal of the emergency system, said starter battery and the fuel cell being connected in parallel with an output terminal of the separate system of the input terminal.
Selon une première forme de réalisation de l'invention, un interrupteur est disposé sur ladite borne de sortie. Comme on le verra en détail plus loin, cette solution permet d'assurer l'alimentation des équipements électroniques avec une seule batterie en régime nominal, c'est à dire hors interruption de l'alimentation en courant alternatif, le circuit d'alimentation conforme à l'invention n'étant mis en oeuvre que lors d'une telle interruption.According to a first embodiment of the invention, a switch is disposed on said output terminal. As will be seen in detail below, this solution makes it possible to ensure the supply of the electronic equipment with a single battery in nominal mode, that is to say without interruption of the AC power supply, the supply circuit complies with the invention being implemented only during such an interruption.
Selon une deuxième forme de réalisation de l'invention, un interrupteur est disposé entre la pile à combustible et ladite borne de sortie. On verra également plus loin que cette solution présente l'avantage d'éviter l'utilisation de toute batterie pour alimenter les équipements électroniques, l'alimentation en courant continu étant dans ce cas entièrement fournie par le circuit conforme à l'invention que ce soit en régime nominal ou lors d'une interruption de l'alimentation en courant alternatif.According to a second embodiment of the invention, a switch is arranged between the fuel cell and said output terminal. It will also be seen later that this solution has the advantage of avoiding the use of any battery to power the electronic equipment, the DC power supply being in this case entirely provided by the circuit according to the invention whether in nominal mode or during an interruption of the AC power supply.
Selon d'autres particularités possibles :According to other possible features:
- la batterie de démarrage est reliée à la source (10) de courant alternatif par l'intermédiaire d'un convertisseur alternatif/continu AC / DC,the starter battery is connected to the source (10) of alternating current via an AC / DC AC / DC converter,
- la batterie de démarrage et la pile à combustible sont reliées à la borne de sortie du système de secours de pile à combustible par l'intermédiaire de convertisseurs continu/continu DC/DC respectif (512, 522),the starter battery and the fuel cell are connected to the output terminal of the fuel cell backup system via respective DC / DC converters (512, 522),
- une capacité de filtrage est placée au niveau de la sortie de la batterie de démarrage et de la pile à combustible,a filtering capacity is placed at the output of the starter battery and the fuel cell,
- le circuit comporte une batterie de secours située en aval de la borne de sortie sur une ligne d'alimentation d'un équipement électronique à partir de la source,the circuit comprises a backup battery located downstream of the output terminal on a supply line of electronic equipment from the source,
- le système de secours à pile à combustible est maintenu sous tension par la source de courant alternatif,- the fuel cell backup system is kept energized by the AC power source,
- la batterie de démarrage est maintenue en charge par la source de courant alternatif lorsque ladite source fonctionne et par la pile à combustible lorsque cette dernière est mise en marche, notamment en cas de défaillance de la source. La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.- The starter battery is maintained by the AC power source when said source is running and by the fuel cell when the latter is turned on, especially in case of failure of the source. The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.
La figure 1 est un schéma d'une installation d'alimentation selon l'art antérieur. La figure 2 est un schéma montrant une installation comprenant un circuit d'alimentation sans interruption conforme à un premier mode de réalisation de l'invention.Figure 1 is a diagram of a power plant according to the prior art. Fig. 2 is a diagram showing an installation comprising an uninterruptible power supply circuit according to a first embodiment of the invention.
La figure 3 est un schéma montrant une installation comprenant un circuit d'alimentation sans interruption conforme à un deuxième mode de réalisation de l'invention.Figure 3 is a diagram showing an installation comprising an uninterruptible power supply circuit according to a second embodiment of the invention.
Sur la figure 2 est représentée une installation destinée à alimenter des équipements électriques, notamment électroniques. Comme sur la figure 1 , certains équipements électroniques 1 , 2 doivent être alimentés en courant continu, par exemple sous 48 V pour des équipements de télécommunications. Dans l'exemple de réalisation de la figure 2, ces équipements électroniques sont alimentés par l'intermédiaire d'un convertisseur AC/DC 21 dont la borne 211 d'entrée est reliée à la source 10 de courant alternatif et dont la borne 212 de sortie est connectée au bus d'alimentation de l'installation. D'autres équipements 3, 4 sont alimentés en courant alternatif respectivement par le réseau électrique local ou via un convertisseur DC/AC 40 relié à la borne 212 de sortie du convertisseur AC/DC 21. Selon un premier mode de réalisation de l'invention, l'installation de la figure 2 comporte en outre un circuit 50 d'alimentation sans interruption qui comprend, d'une part, une batterie 51 reliée à la source 10 de courant alternatif sur une borne 501 d'entrée du circuit 50 par l'intermédiaire d'un convertisseur alternatif/continu AC/DC 511 et, d'autre part, une pile 52 à combustible. La batterie 51 du système 50 de secours à pile à combustible 52 est prévue notamment pour le démarrage de la pile 52.In Figure 2 is shown an installation for supplying electrical equipment, including electronic. As in Figure 1, some electronic equipment 1, 2 must be supplied with power continuous, for example under 48 V for telecommunications equipment. In the embodiment of FIG. 2, these electronic equipments are powered by means of an AC / DC converter 21 whose input terminal 211 is connected to the AC source and whose terminal 212 of output is connected to the power bus of the installation. Other equipment 3, 4 are supplied with alternating current respectively by the local electrical network or via a DC / AC converter 40 connected to the output terminal 212 of the AC / DC converter 21. According to a first embodiment of the invention , the installation of Figure 2 further comprises an uninterrupted power supply circuit 50 which comprises, on the one hand, a battery 51 connected to the source 10 of alternating current on an input terminal 501 of the circuit 50 by the intermediate AC / DC 511 AC / DC converter and secondly a fuel cell 52. The battery 51 of the fuel cell backup system 50 is provided in particular for starting the battery 52.
La batterie 51 et la pile 52 à combustible sont reliées respectivement à la borne 502 de sortie du circuit 50 par l'intermédiaire de convertisseurs continu/continu DC/DC 512 et 522. Une capacité 504 de filtrage à 100 Hz est placée en sortie de la batterie 51 et de la pile 52 à combustible.The battery 51 and the fuel cell 52 are respectively connected to the output terminal 502 of the circuit 50 via DC / DC converters DC / DC 512 and 522. A filtering capacitor 504 at 100 Hz is placed at the output of the battery 51 and the fuel cell 52.
Par ailleurs, on peut voir sur la figure 2 qu'un interrupteur 503 est disposé sur la borne 502 de sortie du circuit 50 qui fonctionne alors en mode « chargeur ».Furthermore, it can be seen in Figure 2 that a switch 503 is disposed on the output terminal 502 of the circuit 50 which then operates in "charger" mode.
Il convient de remarquer que la solution proposée à la figure 2 n'utilise qu'une seule batterie 31 de secours pour alimenter les équipements, ce qui représente un avantage appréciable par rapport à l'installation de la figure 1 pour laquelle une pluralité de batteries était nécessaire.It should be noted that the solution proposed in FIG. 2 uses only one backup battery 31 for powering the equipment, which represents a significant advantage over the installation of FIG. 1 for which a plurality of batteries was necessary.
En régime nominal, l'interrupteur 503 est ouvert et les divers équipements sont alimentés depuis la source 10 de courant alternatif. En cas de coupure de l'alimentation alternative, l'interrupteur 503 est fermé et l'alimentation en courant continu des équipements électroniques 1 , 2 et en courant alternatif des équipements électriques 4 est assurée par le circuit ou système 50 de secours d'alimentation sans interruption. Les batteries 31 et 51 servent de tampon au démarrage du circuit 50 lors du basculement d'alimentation.In nominal mode, the switch 503 is open and the various equipment are powered from the AC source. In case of failure of the AC power supply, the switch 503 is closed and the DC power supply of the electronic equipment 1, 2 and AC of the electrical equipment 4 is provided by the circuit or system 50 emergency power supply without interruption. The batteries 31 and 51 serve as a buffer at the start of the circuit 50 during the power switchover.
La figure 3 représente un deuxième mode de réalisation dans lequel un interrupteur 503' est disposé entre la pile 52 à combustible et la borne 502 de sortie du circuit 50' d'alimentation sans interruption.FIG. 3 represents a second embodiment in which a switch 503 'is arranged between the fuel cell 52 and the output terminal 502 of the uninterrupted supply circuit 50'.
Contrairement au mode de réalisation de la figure 2, le circuit 50' d'alimentation de la figure 3 assure seul l'alimentation des équipements 2, 3, 4 que ce soit en régime nominal ou lors d'une interruption de l'alimentation en courant alternatif. On comprend, avec tous les avantages que cela représente, que, dans ce cas, aucune batterie ne soit nécessaire pour l'alimentation de secours des équipements 2, 3, 4 puisque ceux-ci sont alimentés en permanence par le circuit 50' et qu'aucune interruption d'alimentation ne peut donc se produire lors d'une coupure de l'alimentation en courant alternatif. En régime nominal, l'interrupteur 503' est ouvert et le circuit 50' d'alimentation sans interruption est toujours sous tension, mais sans que la pile à combustible soit alimentée.In contrast to the embodiment of FIG. 2, the supply circuit 50 'of FIG. 3 provides only the supply of the equipment 2, 3, 4 either at rated speed or when the power supply is interrupted. alternating current. It is understood, with all the advantages that this represents, that in this case, no battery is necessary for the emergency power supply of the equipment 2, 3, 4 since these are permanently supplied by the circuit 50 'and that no interruption of power can therefore occur during a break of the AC power supply. In nominal mode, the switch 503 'is open and the circuit 50' uninterruptible power supply is still energized, but without the fuel cell is powered.
La batterie 51 peut être de faible capacité puisqu'elle ne doit fonctionner que la durée de quelques secondes du démarrage du circuit 50', lequel est toujours sous tension et dont les conditions « état prêt à fonctionner » sont maintenues en prélevant une partie de la puissance qui transite dans le circuit 50'.The battery 51 may be of low capacity since it only has to operate for a few seconds of the start of the circuit 50 ', which is still energized and whose conditions "ready state" are maintained by taking a part of the power that passes through the circuit 50 '.
On peut observer sur la figure 3 la présence d'un convertisseur DC/AC 40 sur la borne 502 de sortie du circuit 50', destiné à alimenter en courant alternatif les équipements 4.It can be seen in FIG. 3 the presence of a DC / AC converter 40 on the output terminal 502 of the circuit 50 'intended to supply the equipment 4 with alternating current.
Afin d'alimenter ces équipements 4 avec un meilleur rendement, il est possible de placer un court-circuit 505 entre la borne 501 d'entrée du circuitIn order to supply these equipments 4 with a better efficiency, it is possible to place a short circuit 505 between the input terminal 501 of the circuit
50' d'alimentation sans interruption et une borne 41 de sortie du convertisseur50 'uninterruptible power supply and a 41 output terminal of the converter
DC/AC 40, l'interrupteur 506 du court-circuit étant fermé en régime nominal et ouvert lors d'une interruption.DC / AC 40, the switch 506 of the short circuit being closed in nominal mode and open during an interruption.
L'invention permet ainsi de sous-dimensionner les batteries de secours du circuit ainsi que la batterie de démarrage de la pile. L'invention permet même éventuellement de s'affranchir des batteries de secours ou de les remplacer par des capacités.The invention thus makes it possible to undersize the circuit backup batteries as well as the starter battery of the battery. The invention even possibly to get rid of backup batteries or replace them with capacity.
Dans la variante de la figure 3, les batteries de secours sont remplacées (uniquement) par la batterie de démarrage de la pile qui reste faiblement dimensionnée.In the variant of Figure 3, the backup batteries are replaced (only) by the starter battery of the battery remains poorly sized.
Quoique l'invention ait été décrite en relation avec des modes de réalisation particuliers, elle ne s'en trouve pas limitée mais est susceptible de modifications et de variantes qui apparaîtront à l'homme du métier dans le cadre des revendications ci-après. La pile à combustible 52 est avantageusement une pile à membrane échangeuse de protons (PEM) alimentée, d'une part, en air et d'autre part en hydrogène stocké sous haute pression dans des réservoirs ou bouteilles ou sous basse pression dans des conteneurs d'hydrures. Although the invention has been described in relation to particular embodiments, it is not limited thereto but is subject to modifications and variations which will occur to those skilled in the art within the scope of the claims below. The fuel cell 52 is advantageously a proton exchange membrane (PEM) cell fed, on the one hand, with air and, on the other hand, hydrogen stored under high pressure in tanks or bottles or under low pressure in storage containers. hydrides.

Claims

REVENDICATIONS
1. Circuit d'alimentation sans interruption à partir d'une source (10) de courant alternatif, comportant un système (50 ; 50') de secours à pile à combustible caractérisé en ce que le système de secours comprend : - une pile (52) à combustible,An uninterruptible power supply circuit from an AC source (10) having a fuel cell backup system (50; 50 ') characterized in that the backup system comprises: - a battery ( 52) with fuel,
- une batterie (51 ) de démarrage de la pile (52) à combustible reliée à ladite source de courant alternatif sur une borne (501 ) d'entrée du systèmea battery (51) for starting the fuel cell (52) connected to said alternating current source on a system input terminal (501)
(50, 50') de secours, ladite batterie (51 ) de démarrage et la pile (52) à combustible étant reliées en parallèle à une borne (502) de sortie du système (50, 50') distincte de la borne d'entrée.(50, 50 '), said starter battery (51) and the fuel cell (52) being connected in parallel with an output terminal (502) of the system (50, 50') separate from the terminal Entrance.
2. Circuit selon la revendication 1 , caractérisé en ce qu'un interrupteur (503) est disposé sur ladite borne (502) de sortie.2. Circuit according to claim 1, characterized in that a switch (503) is disposed on said output terminal (502).
3. Circuit selon la revendication 1 , caractérisé en ce qu'un interrupteur (503') est disposé entre la pile (52) à combustible et ladite borne (502) de sortie.3. Circuit according to claim 1, characterized in that a switch (503 ') is disposed between the fuel cell (52) and said output terminal (502).
4. Circuit selon la revendication 3, caractérisé en ce qu'un convertisseur continu/alternatif (40) est disposé au niveau ou en aval de la borne de sortie dudit système de secours.4. Circuit according to claim 3, characterized in that a DC / AC converter (40) is disposed at or downstream of the output terminal of said backup system.
5. Circuit selon la revendication 4, caractérisé en ce qu'un court-circuit (505) est commutable entre la borne (501 ) d'entrée dudit circuit (50') et une borne (41 ) de sortie dudit convertisseur continu / alternatif (40).5. Circuit according to claim 4, characterized in that a short-circuit (505) is switchable between the input terminal (501) of said circuit (50 ') and an output terminal (41) of said DC / AC converter. (40).
6. Circuit selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la batterie (51 ) de démarrage est reliée à la source (10) de courant alternatif par l'intermédiaire d'un convertisseur alternatif/continu AC/DC (511 ). 6. Circuit according to any one of claims 1 to 5, characterized in that the starter battery (51) is connected to the source (10) of alternating current via an AC / DC AC / DC converter. (511).
7. Circuit selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la batterie (51 ) de démarrage et la pile (52) à combustible sont reliées à la borne (502) de sortie du système (50, 50') de secours de pile à combustible par l'intermédiaire de convertisseurs continu/continu DC/DC respectif (512, 522). 7. Circuit according to any one of claims 1 to 6, characterized in that the starter battery (51) and the fuel cell (52) are connected to the output terminal (502) of the system (50, 50 '). ) of fuel cell backup via respective DC / DC DC / DC converters (512, 522).
8. Circuit selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'une capacité de filtrage (504) est placée au niveau de la sortie de la batterie (51 ) de démarrage et de la pile (52) à combustible. 8. Circuit according to any one of claims 1 to 7, characterized in that a filtering capacitor (504) is placed at the output of the starter battery (51) and the fuel cell (52). .
9. Circuit selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il comporte une batterie (31 ) de secours située en aval de la borne (502) de sortie sur une ligne d'alimentation d'un équipement électronique à partir de la source (10). 9. Circuit according to any one of claims 1 to 8, characterized in that it comprises a backup battery (31) located downstream of the terminal (502) output on a supply line of electronic equipment. from the source (10).
10. Circuit selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le système (50, 50') de secours à pile à combustible est maintenu sous tension par la source (10) de courant alternatif.10. Circuit according to any one of claims 1 to 9, characterized in that the fuel cell backup system (50, 50 ') is maintained under voltage by the source (10) of alternating current.
11. Circuit selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la batterie (51 ) de démarrage est maintenue en charge par la source (10) de courant alternatif lorsque ladite source fonctionne et par la pile (52) à combustible lorsque cette dernière est mise en marche, notamment en cas de défaillance de la source (10). 11. Circuit according to any one of claims 1 to 10, characterized in that the starter battery (51) is maintained in charge by the source (10) of alternating current when said source operates and by the battery (52) to when the latter is switched on, in particular in the event of failure of the source (10).
EP06743812A 2005-05-03 2006-04-19 Uninterrupted power supply circuit Withdrawn EP1880460A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0551159A FR2885459B1 (en) 2005-05-03 2005-05-03 POWER CIRCUIT WITHOUT INTERRUPTION
PCT/FR2006/050354 WO2006117488A2 (en) 2005-05-03 2006-04-19 Uninterrupted power supply circuit

Publications (1)

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EP1880460A2 true EP1880460A2 (en) 2008-01-23

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EP06743812A Withdrawn EP1880460A2 (en) 2005-05-03 2006-04-19 Uninterrupted power supply circuit

Country Status (6)

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US (1) US20090029194A1 (en)
EP (1) EP1880460A2 (en)
JP (1) JP2008541679A (en)
CA (1) CA2605800A1 (en)
FR (1) FR2885459B1 (en)
WO (1) WO2006117488A2 (en)

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Publication number Priority date Publication date Assignee Title
TW201225481A (en) * 2010-12-14 2012-06-16 Hon Hai Prec Ind Co Ltd Power supply of data center
ES2449480T3 (en) 2011-05-12 2014-03-19 Ip Energy Modular unit for the construction of computer data centers
US9277749B2 (en) 2014-02-07 2016-03-08 Gojo Industries, Inc. Compositions and methods with efficacy against spores and other organisms
KR102142983B1 (en) * 2019-01-10 2020-08-10 충북대학교 산학협력단 Customer load management system using Uninterruptible Power Supply

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GB9400499D0 (en) * 1994-01-12 1994-03-09 Magnum Power Solutions Ltd Improved uninterruptible power supply
JP2002063927A (en) * 2000-08-23 2002-02-28 Sanyo Electric Co Ltd Control method of fuel cell system and its device
AUPS143902A0 (en) * 2002-03-28 2002-05-09 Curtin University Of Technology Power conversion system and method of converting power
US6787259B2 (en) * 2002-09-12 2004-09-07 Metallic Power, Inc. Secondary power source for use in a back-up power system
DE10243213A1 (en) * 2002-09-17 2004-04-01 Carl Freudenberg Kg Fail-safe current supply for load network e.g. for computer system, has secondary DC voltage source used as back-up for AC mains network
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US7117044B2 (en) * 2003-12-30 2006-10-03 Square D Company Alternative energy system control method and apparatus

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Also Published As

Publication number Publication date
US20090029194A1 (en) 2009-01-29
WO2006117488A2 (en) 2006-11-09
FR2885459A1 (en) 2006-11-10
FR2885459B1 (en) 2007-08-24
WO2006117488A3 (en) 2007-11-01
JP2008541679A (en) 2008-11-20
CA2605800A1 (en) 2006-11-09

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