EP1396002B1 - Power supply method for electrical equipment - Google Patents
Power supply method for electrical equipment Download PDFInfo
- Publication number
- EP1396002B1 EP1396002B1 EP02745523.7A EP02745523A EP1396002B1 EP 1396002 B1 EP1396002 B1 EP 1396002B1 EP 02745523 A EP02745523 A EP 02745523A EP 1396002 B1 EP1396002 B1 EP 1396002B1
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- European Patent Office
- Prior art keywords
- current
- voltage
- converter
- correction factor
- power supply
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2201/00—Electronic control systems; Apparatus or methods therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
- H01H47/325—Energising current supplied by semiconductor device by switching regulator
Definitions
- the present invention relates to a method for supplying electrical equipment such as an electromagnetic actuator that can be used in particular for actuating motor vehicle thermal engine valves.
- Such an electromagnetic actuator is incorporated in a supply network in which it is connected via a capacitive element to a voltage converter which is itself connected to an accumulator and to an alternator and which is regulated in voltage. and limited in current.
- the operation of the electromagnetic actuator generates on the output network of the voltage converter current calls which are reflected in the input of the voltage converter. This results in current peaks whose characteristics are incompatible with the response time of the alternator so that, the alternator can not provide the necessary current, it is taken from the accumulator. However, these peaks of high amplitude current causes a heating of the accumulator which makes the standard accumulators unsuitable for such use.
- the document FR 2 766 005 A discloses a method of powering an electrical equipment according to the preamble of claim 1.
- An object of the invention is to provide an economical and efficient way to supply such an electrical equipment optimally.
- the current regulation of the voltage converter which is thereby controlled as a current generator makes it possible to maintain the current supplied by the accumulator at the input of the voltage converter at a substantially constant value. This makes it possible to have a minimum volume of the capacitive element.
- the average intensity is evaluated in a predictive manner from control data of the actuator.
- the intensity reference is thus obtained by anticipation.
- This calculation method makes it possible to obtain the intensity setpoint in a simple manner and to avoid using as a setpoint a periodically measured intensity which requires having a fast regulation and a high capacity as a reserve of energy in the event of sudden variation of the current.
- the intensity setpoint is equal to the evaluated average intensity plus a correction factor for an output voltage of the converter which is rising and lower than an upper voltage limit, and the intensity setpoint is equal to at the rated average intensity minus the correction factor for a converter output voltage that is down and higher than a lower voltage limit.
- the correction factor is determined in such a way that the input current of the converter is maintained within a determined range compatible with the characteristics of the accumulator and that the output voltage of the converter is maintained in a determined range compatible with the characteristics of the equipment. This makes it possible to limit the frequency of calculation of the setpoint.
- the correction factor corresponds to an imprecision of the evaluation of the average intensity and is preferably equal to about 10% of the average intensity evaluated.
- the correction factor makes it possible to compensate for any differences between the average intensity evaluated and the average intensity actually consumed.
- the correction factor thus makes it possible to determine a range of average intensities at which the average intensity actually consumed has a high probability of belonging.
- the process according to the invention is here intended to supply an electromagnetic actuator that can be used to actuate valves of a thermal engine of a motor vehicle.
- Such an actuator comprises electromagnetic coils which, when excited, attract a pallet of which at least one valve is secured to bring and maintain the valve in the open position and in the closed position.
- the current necessary for the excitation of the coils must be supplied to them in the form of peaks of high amplitude and of short duration according to an excitation frequency determined by a computer of the vehicle which drives the actuator in current.
- control data function such as depression of the accelerator pedal, engine speed, vehicle speed and more generally engine load parameters.
- the electromagnetic actuator 1 is connected to a supply circuit 2 which comprises an accumulator 3 connected to a voltage converter 4.
- the accumulator 3 delivers a voltage of the order of 12 volts and is connected to an alternator not shown to be recharged.
- the voltage converter 4 is arranged to convert the input voltage from 12 volts to an output voltage of the order of 42 volts.
- the voltage converter 4 is connected to the electromagnetic actuator 1 by a capacitive element 5 arranged to allow storage of the energy supplied by the voltage converter 4.
- the method according to the invention consists in regulating the voltage converter 4 in current from an intensity reference corresponding to a mean intensity between two peaks.
- the average intensity is evaluated predictively from the voltage in the accumulator 3 and the peak power that will be consumed over a predetermined cycle time. This power depends on the engine speed which can be deduced from the control data of the actuator used by the vehicle computer.
- the voltage converter thus controlled forms a current generator that is slaved to the average power that will be consumed during the next thermal cycle.
- Regulation is carried out in a conventional manner by modulating the input voltage of the converter as a function of the current measured at the output of the converter.
- the intensity setpoint is thus equal to the evaluated average intensity plus the correction factor for an output voltage of the converter which is rising and which is lower than an upper limit of voltage, and the intensity setpoint is equal to l the rated average intensity minus the correction factor for a down converter output voltage that is greater than a lower voltage limit.
- This correction factor corresponds to an uncertainty as to the moment of appearance of the next intensity peak, that is to say a possible difference between the average intensity evaluated and the average intensity actually consumed.
- the correction factor is approximately 10% of the average intensity evaluated.
- the output voltage of the converter varies.
- the actuator being driven current, variations in the voltage are not a problem. These variations, however, are maintained in the range delimited by the lower and upper voltage limits. These limits are determined so that the corresponding voltage range is compatible with the characteristics of the actuator. For example, if the characteristics of the actuator allow operation in a voltage range between 30 volts and 50 volts, a lower limit equal to about 34 volts and an upper limit equal to about 44 volts is chosen.
- correction factor is equal to 10% in the example described, it may have a different value. It is also possible to do without a correction factor.
- the lower and upper limits of voltage can also be modified, in particular be closer or more distant from each other depending on the characteristics of the equipment to be powered.
- the invention is not limited to the supply of an electromagnetic actuator but can be used to power any electrical equipment operating in a pulsed mode.
- the invention can be applied to a flashing system of the projectors of the vehicle.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Eletrric Generators (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Electrical Variables (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Dc-Dc Converters (AREA)
Description
Procédé d'alimentation d'un équipement électrique.Method of powering an electrical equipment
La présente invention concerne un procédé d'alimentation d'un équipement électrique tel qu'un actionneur électromagnétique utilisable notamment pour l'actionnement des soupapes de moteurs thermiques de véhicules automobiles.The present invention relates to a method for supplying electrical equipment such as an electromagnetic actuator that can be used in particular for actuating motor vehicle thermal engine valves.
Un tel actionneur électromagnétique est incorporé dans un réseau d'alimentation dans lequel il est relié par l'intermédiaire d'un élément capacitif à un convertisseur de tension qui est lui-même relié à un accumulateur et à un alternateur et qui est régulé en tension et limité en courant.Such an electromagnetic actuator is incorporated in a supply network in which it is connected via a capacitive element to a voltage converter which is itself connected to an accumulator and to an alternator and which is regulated in voltage. and limited in current.
Dans un réseau de ce type, le fonctionnement de l'actionneur électromagnétique engendre sur le réseau en sortie du convertisseur de tension des appels de courant qui sont répercutés en entrée du convertisseur de tension. Il en résulte des pics de courant dont les caractéristiques sont incompatibles avec le temps de réponse de l'alternateur de sorte que, l'alternateur ne pouvant fournir le courant nécessaire, celui-ci est prélevé sur l'accumulateur. Or, ces pics de courant de forte amplitude provoque un échauffement de l'accumulateur qui rend les accumulateurs standards peu adaptés à une telle utilisation.In a network of this type, the operation of the electromagnetic actuator generates on the output network of the voltage converter current calls which are reflected in the input of the voltage converter. This results in current peaks whose characteristics are incompatible with the response time of the alternator so that, the alternator can not provide the necessary current, it is taken from the accumulator. However, these peaks of high amplitude current causes a heating of the accumulator which makes the standard accumulators unsuitable for such use.
On aurait pu penser à augmenter la capacité associée au convertisseur de tension pour filtrer ces pics de consommation. Or, compte-tenu de l'amplitude et de la durée de ces pics, un tel filtrage nécessiterait un volume important de condensateurs pour être efficace. On pourrait également utiliser un accumulateur de faible résistance interne ou un alternateur ayant un temps de réponse court. Ces éléments sont toutefois relativement onéreux.One could have thought of increasing the capacity associated with the voltage converter to filter these consumption peaks. However, given the amplitude and duration of these peaks, such a filtering would require a large volume of capacitors to be effective. It would also be possible to use an internal low resistance accumulator or an alternator having a short response time. These elements are, however, relatively expensive.
Le document
Un but de l'invention est de fournir un moyen économique et efficace pour alimenter un tel équipement électrique de manière optimale.An object of the invention is to provide an economical and efficient way to supply such an electrical equipment optimally.
A cet effet, on prévoit, selon l'invention, un procédé d'alimentation d'un équipement électrique qui fonctionne selon des pics d'intensité et qui est relié par l'intermédiaire d'au moins un élément capacitif à un convertisseur de tension relié à un accumulateur, le convertisseur de tension étant régulé en courant à partir d'une consigne d'intensité correspondant à une intensité moyenne entre deux pics.For this purpose, it is provided, according to the invention, a method of supplying an electrical equipment which operates according to intensity peaks and which is connected via at least one capacitive element to a voltage converter connected to an accumulator, the voltage converter being regulated in current from an intensity reference corresponding to an average intensity between two peaks.
Ainsi, la régulation en courant du convertisseur de tension qui est de la sorte commandé en générateur de courant permet de maintenir à une valeur sensiblement constante le courant fourni par l'accumulateur en entrée du convertisseur de tension. Ceci permet d'avoir un volume minimal de l'élément capacitif.Thus, the current regulation of the voltage converter which is thereby controlled as a current generator makes it possible to maintain the current supplied by the accumulator at the input of the voltage converter at a substantially constant value. This makes it possible to have a minimum volume of the capacitive element.
Selon l'invention, l'intensité moyenne est évaluée de manière prédictive à partir de données de commande de l'actionneur.According to the invention, the average intensity is evaluated in a predictive manner from control data of the actuator.
La consigne d'intensité est ainsi obtenue par anticipation. Ce mode de calcul permet d'obtenir la consigne d'intensité de manière simple et d'éviter d'utiliser comme consigne une intensité mesurée périodiquement qui nécessite d'avoir une régulation rapide et une capacité élevée comme réserve d'énergie en cas de brusque variation du courant.The intensity reference is thus obtained by anticipation. This calculation method makes it possible to obtain the intensity setpoint in a simple manner and to avoid using as a setpoint a periodically measured intensity which requires having a fast regulation and a high capacity as a reserve of energy in the event of sudden variation of the current.
Avantageusement alors, la consigne d'intensité est égale à l'intensité moyenne évaluée augmentée d'un facteur de correction pour une tension de sortie du convertisseur qui est montante et inférieure à une limite supérieure de tension, et la consigne d'intensité est égale à l'intensité moyenne évaluée diminuée du facteur de correction pour une tension de sortie du convertisseur qui est descendante et supérieure à une limite inférieure de tension.Advantageously then, the intensity setpoint is equal to the evaluated average intensity plus a correction factor for an output voltage of the converter which is rising and lower than an upper voltage limit, and the intensity setpoint is equal to at the rated average intensity minus the correction factor for a converter output voltage that is down and higher than a lower voltage limit.
Le facteur de correction est déterminé de telle manière que le courant en entrée du convertisseur soit maintenu dans une plage déterminée compatible avec les caractéristiques de l'accumulateur et que la tension en sortie du convertisseur soit maintenue dans une plage déterminée compatible avec les caractéristiques de l'équipement. Ceci permet de limiter la fréquence de calcul de la consigne.The correction factor is determined in such a way that the input current of the converter is maintained within a determined range compatible with the characteristics of the accumulator and that the output voltage of the converter is maintained in a determined range compatible with the characteristics of the equipment. This makes it possible to limit the frequency of calculation of the setpoint.
Avantageusement encore, le facteur de correction correspond à une imprécision de l'évaluation de l'intensité moyenne et est de préférence égal à environ 10 % de l'intensité moyenne évaluée.Advantageously, the correction factor corresponds to an imprecision of the evaluation of the average intensity and is preferably equal to about 10% of the average intensity evaluated.
Le facteur de correction permet de compenser des éventuelles différences entre l'intensité moyenne évaluée et l'intensité moyenne réellement consommée. Le facteur de correction permet ainsi de déterminer une plage d'intensités moyennes à laquelle l'intensité moyenne réellement consommée a de fortes probabilités d'appartenir.The correction factor makes it possible to compensate for any differences between the average intensity evaluated and the average intensity actually consumed. The correction factor thus makes it possible to determine a range of average intensities at which the average intensity actually consumed has a high probability of belonging.
D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit d'un mode de mise en oeuvre particulier non limitatif de l'invention.Other characteristics and advantages of the invention will become apparent on reading the following description of a particular non-limiting embodiment of the invention.
Il sera fait référence à la figure unique annexée représentant schématiquement un réseau d'alimentation utilisé pour alimenter un équipement électrique selon le procédé conforme à l'invention.Reference will be made to the single appended figure schematically showing a power supply network used to power an electrical equipment according to the method according to the invention.
Le procédé conforme à l'invention est ici destiné à l'alimentation d'un actionneur électromagnétique utilisable pour actionner des soupapes d'un moteur thermique d'un véhicule automobile. Un tel actionneur comporte des bobines électromagnétiques qui, lorsqu'elles sont excitées, attirent une palette dont au moins une soupape est solidaire pour amener et maintenir la soupape en position ouverte et en position fermée. Le courant nécessaire à l'excitation des bobines doit être fourni à celles-ci sous forme de pics de forte amplitude et de faible durée selon une fréquence d'excitation déterminée par un calculateur du véhicule qui pilote l'actionneur en courant en fonction de données de commande comme l'enfoncement de la pédale d'accélérateur, le régime moteur, la vitesse du véhicule et plus généralement de paramètres de charge du moteur.The process according to the invention is here intended to supply an electromagnetic actuator that can be used to actuate valves of a thermal engine of a motor vehicle. Such an actuator comprises electromagnetic coils which, when excited, attract a pallet of which at least one valve is secured to bring and maintain the valve in the open position and in the closed position. The current necessary for the excitation of the coils must be supplied to them in the form of peaks of high amplitude and of short duration according to an excitation frequency determined by a computer of the vehicle which drives the actuator in current. control data function such as depression of the accelerator pedal, engine speed, vehicle speed and more generally engine load parameters.
En référence à la figure, l'actionneur électromagnétique 1 est relié à un circuit d'alimentation 2 qui comprend un accumulateur 3 relié à un convertisseur de tension 4. L'accumulateur 3 délivre une tension de l'ordre de 12 volts et est relié à un alternateur non représenté pour être rechargé. Le convertisseur de tension 4 est agencé pour assurer une conversion de la tension d'entrée de 12 volts en une tension de sortie de l'ordre de 42 volts.With reference to the figure, the
Le convertisseur de tension 4 est relié à l'actionneur électromagnétique 1 par un élément capacitif 5 agencé pour permettre le stockage de l'énergie fournie par le convertisseur de tension 4.The
Le procédé conforme à l'invention consiste à réguler le convertisseur de tension 4 en courant à partir d'une consigne d'intensité correspondant à une intensité moyenne entre deux pics.The method according to the invention consists in regulating the
L'intensité moyenne est évaluée de manière prédictive à partir de la tension dans l'accumulateur 3 et de la puissance crête qui va être consommée sur une durée de cycle prédéterminée. Cette puissance dépend du régime moteur qui peut être déduit des données de commande de l'actionneur utilisées par le calculateur du véhicule.The average intensity is evaluated predictively from the voltage in the
Le convertisseur de tension ainsi commandé forme un générateur de courant qui est asservi à la puissance moyenne qui va être consommée durant le cycle thermique suivant.The voltage converter thus controlled forms a current generator that is slaved to the average power that will be consumed during the next thermal cycle.
La régulation est réalisée de façon classique en modulant la tension en entrée du convertisseur en fonction du courant mesuré en sortie du convertisseur.Regulation is carried out in a conventional manner by modulating the input voltage of the converter as a function of the current measured at the output of the converter.
Il est en outre réalisé une mesure de la tension en sortie du convertisseur, qui est fournie au calculateur et est utilisée pour appliquer, lors de la détermination de la consigne d'intensité, un facteur de correction à l'intensité moyenne évaluée.It is further realized a measurement of the voltage at the output of the converter, which is supplied to the computer and is used to apply, when determining the intensity setpoint, a correction factor at the evaluated average intensity.
La consigne d'intensité est ainsi égale à l'intensité moyenne évaluée augmentée du facteur de correction pour une tension de sortie du convertisseur qui est montante et qui est inférieure à une limite supérieure de tension, et la consigne d'intensité est égale à l'intensité moyenne évaluée diminuée du facteur de correction pour une tension de sortie du convertisseur qui est descendante et qui est supérieure à une limite inférieure de tension.The intensity setpoint is thus equal to the evaluated average intensity plus the correction factor for an output voltage of the converter which is rising and which is lower than an upper limit of voltage, and the intensity setpoint is equal to l the rated average intensity minus the correction factor for a down converter output voltage that is greater than a lower voltage limit.
Ce facteur de correction correspond à une incertitude sur l'instant d'apparition du prochain pic d'intensité, c'est-à-dire à une différence possible entre l'intensité moyenne évaluée et l'intensité moyenne effectivement consommée. Le facteur de correction est égal à environ 10 % de l'intensité moyenne évaluée.This correction factor corresponds to an uncertainty as to the moment of appearance of the next intensity peak, that is to say a possible difference between the average intensity evaluated and the average intensity actually consumed. The correction factor is approximately 10% of the average intensity evaluated.
Du fait de la commande du convertisseur de tension en générateur de courant, la tension en sortie du convertisseur varie. On notera que l'actionneur étant piloté en courant, des variations de la tension sont peu gênantes. Ces variations sont toutefois maintenues dans la plage délimitée par les limites inférieure et supérieure de tension. Ces limites sont déterminées pour que la plage correspondante de tension soit compatible avec les caractéristiques de l'actionneur. A titre d'exemple, si les caractéristiques de l'actionneur permettent un fonctionnement dans une plage de tensions comprise entre 30 volts et 50 volts, on choisit une limite inférieure égale à 34 volts environ et une limite supérieure égale à 44 volts environ.Due to the control of the voltage converter into a current generator, the output voltage of the converter varies. Note that the actuator being driven current, variations in the voltage are not a problem. These variations, however, are maintained in the range delimited by the lower and upper voltage limits. These limits are determined so that the corresponding voltage range is compatible with the characteristics of the actuator. For example, if the characteristics of the actuator allow operation in a voltage range between 30 volts and 50 volts, a lower limit equal to about 34 volts and an upper limit equal to about 44 volts is chosen.
Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et on peut y apporter des variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications.Of course, the invention is not limited to the embodiment described and variations can be made thereto. embodiment without departing from the scope of the invention as defined by the claims.
Bien que le facteur de correction soit égal à 10 % dans l'exemple décrit, celui-ci peut avoir une valeur différente. Il est également possible de se passer d'un facteur de correction.Although the correction factor is equal to 10% in the example described, it may have a different value. It is also possible to do without a correction factor.
En outre, les limites inférieure et supérieure de tension peuvent également être modifiées, notamment être plus proches ou plus éloignées l'une de l'autre en fonction des caractéristiques de l'équipement à alimenter.In addition, the lower and upper limits of voltage can also be modified, in particular be closer or more distant from each other depending on the characteristics of the equipment to be powered.
Par ailleurs, l'invention n'est pas limitée à l'alimentation d'un actionneur électromagnétique mais est utilisable pour alimenter tout équipement électrique fonctionnant selon un mode pulsé. Par exemple, l'invention peut être appliquée à un système de clignotement des projecteurs du véhicule.Furthermore, the invention is not limited to the supply of an electromagnetic actuator but can be used to power any electrical equipment operating in a pulsed mode. For example, the invention can be applied to a flashing system of the projectors of the vehicle.
Claims (4)
- A power supply method for powering electrical equipment (1) operating on current peaks and
connected via at least one capacitive element (5) to a voltage converter (4) connected to a storage battery (3), the method being characterized in that the voltage converter is current-regulated from a reference current corresponding to a mean current between two peaks and in that the mean current is evaluated in predictive manner from control data for the equipment (1). - A power supply method according to claim 1, characterized in that the reference current is equal to the evaluated mean current plus a correction factor for a voltage at the output from the converter (4) which is rising and less than an upper voltage limit, and the 20 reference current is equal to the evaluated mean current minus the correction factor for a voltage at the output of the converter (4) which is falling and greater than a lower voltage limit.
- A power supply method according to claim 2, characterized in that the correction factor corresponds to inaccuracy in the evaluation of the mean current.
- A power supply method according to claim 3, 30 characterized in that the correction factor is equal to about 10% of the evaluated mean current.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0107855A FR2826200B1 (en) | 2001-06-15 | 2001-06-15 | METHOD FOR SUPPLYING ELECTRICAL EQUIPMENT |
| FR0107855 | 2001-06-15 | ||
| PCT/FR2002/002027 WO2002103729A2 (en) | 2001-06-15 | 2002-06-13 | Power supply method for electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1396002A2 EP1396002A2 (en) | 2004-03-10 |
| EP1396002B1 true EP1396002B1 (en) | 2016-07-20 |
Family
ID=8864352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02745523.7A Expired - Lifetime EP1396002B1 (en) | 2001-06-15 | 2002-06-13 | Power supply method for electrical equipment |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7188591B2 (en) |
| EP (1) | EP1396002B1 (en) |
| JP (1) | JP4098714B2 (en) |
| AU (1) | AU2002317248A1 (en) |
| FR (1) | FR2826200B1 (en) |
| WO (1) | WO2002103729A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2406842B1 (en) * | 2009-03-10 | 2016-06-08 | Ab Skf | Power supply |
| EP2602181B1 (en) * | 2009-06-24 | 2015-10-28 | ZF Friedrichshafen AG | Pod drive installation and hull configuration for a marine vessel |
| ES2372084B1 (en) * | 2010-03-09 | 2012-11-21 | Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea | CURRENT PICK ELIMINATION SYSTEM FOR ELECTRONIC EQUIPMENT AND SYSTEMS WITH DISCONTINUOUS CURRENT CONSUMPTION. |
| US10608607B2 (en) | 2018-01-09 | 2020-03-31 | Biamp Systems, LLC | Audio power source with improved efficiency |
| US10516373B2 (en) | 2018-01-09 | 2019-12-24 | Biamp Systems, LLC | Audio power source with improved efficiency |
| US10404218B2 (en) | 2018-01-09 | 2019-09-03 | Biamp Systems, LLC | Audio power source with improved efficiency |
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| EP1176287A1 (en) * | 2000-07-27 | 2002-01-30 | Peugeot Citroen Automobiles SA | Valve actuator driving device with stabilized current |
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| WO1999056383A1 (en) * | 1998-04-24 | 1999-11-04 | Koninklijke Philips Electronics N.V. | Combined capacitive up/down converter |
| US6151222A (en) * | 1999-03-02 | 2000-11-21 | Delco Electronics Corp. | Dual voltage automotive electrical system with sub-resonant DC-DC converter |
| FR2803956B3 (en) * | 2000-01-13 | 2002-06-14 | Systemes Et Conversion Ind D E | DEVICE AND METHOD FOR POWERING A CONTROL COIL OF AN ELECTRIC CONTACTOR, ESPECIALLY A POWER CONTACTOR |
| DE10014228A1 (en) * | 2000-03-22 | 2001-09-27 | Bosch Gmbh Robert | Method of controlling a fuel-injection solenoid valve, involves activating a further booster pulse, after the first booster pulse is activated at the commencement of the pick-up phase, before of during movement or the valve needle |
| US6798177B1 (en) * | 2002-10-15 | 2004-09-28 | Arques Technology, Inc. | Boost-buck cascade converter for pulsating loads |
-
2001
- 2001-06-15 FR FR0107855A patent/FR2826200B1/en not_active Expired - Lifetime
-
2002
- 2002-06-13 US US10/480,579 patent/US7188591B2/en not_active Expired - Lifetime
- 2002-06-13 EP EP02745523.7A patent/EP1396002B1/en not_active Expired - Lifetime
- 2002-06-13 JP JP2003505955A patent/JP4098714B2/en not_active Expired - Fee Related
- 2002-06-13 AU AU2002317248A patent/AU2002317248A1/en not_active Abandoned
- 2002-06-13 WO PCT/FR2002/002027 patent/WO2002103729A2/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1176287A1 (en) * | 2000-07-27 | 2002-01-30 | Peugeot Citroen Automobiles SA | Valve actuator driving device with stabilized current |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2826200B1 (en) | 2004-09-17 |
| US7188591B2 (en) | 2007-03-13 |
| JP4098714B2 (en) | 2008-06-11 |
| AU2002317248A1 (en) | 2003-01-02 |
| EP1396002A2 (en) | 2004-03-10 |
| US20040154563A1 (en) | 2004-08-12 |
| FR2826200A1 (en) | 2002-12-20 |
| WO2002103729A3 (en) | 2003-03-20 |
| WO2002103729A2 (en) | 2002-12-27 |
| JP2004530831A (en) | 2004-10-07 |
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