METHOD AND CIRCUIT FOR LOCATING AND TRACKING THE MAXIMUM POWER POINT OF ENERGY TRANSDUCERS

The method according to the invention transfers the energy captured by a transducer to a capacitor situated at the output thereof. When the voltage of the capacitor exceeds a certain threshold (WTH), a switched converter, situated between the transducer and the load which it is intended to supply, i...

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Main Authors LOPEZ LAPENA, OSCAR, PENELLA, MARIA TERESA, GASULLA FORNER, MANEL
Format Patent
LanguageEnglish
French
Spanish
Published 09.09.2011
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Abstract The method according to the invention transfers the energy captured by a transducer to a capacitor situated at the output thereof. When the voltage of the capacitor exceeds a certain threshold (WTH), a switched converter, situated between the transducer and the load which it is intended to supply, is activated and transfers the electrical charge from the capacitor to the output load until the voltage of the capacitor falls below another threshold (VTL), at which moment the converter is deactivated and the process is repeated. During the idle time of the converter, a value is obtained that is proportional to the difference in the power values of the transducer, corresponding to two different values of the output voltage thereof. This difference is calculated based on the measurement of the capacitor charging times and the transducer can be placed at the maximum power point thereof by minimising said difference. El método propuesto transfiere la energía captada por un transductor a un condensador situado a su salida. Cuando la tensión del condensador excede un cierto umbral (WTH), un convertidor conmutado situado entre el transductor y la carga que se pretende alimentar, se activa y transfiere la carga eléctrica del condensador a la carga de salida, hasta que la tensión del condensador baja por debajo de otro umbral (VTL), momento en el cual el convertidor se desactiva y el proceso se vuelve a repetir. Durante los tiempos de inactividad del convertidor se obtiene un valor proporcional a la diferencia de potencias del transductor correspondientes a dos valores diferentes de su tensión de salida. El cálculo de dicha diferencia se basa en la medida de tiempos de carga del condensador. Minimizando la diferencia se sitúa al transductor en su punto de máxima potencia. L'invention concerne un procédé qui permet de transférer de l'énergie captée par un transducteur à un condensateur situé à sa sortie. Lorsque la tension du condensateur dépasse un certain seuil (WTH), un convertisseur commuté situé entre le transducteur et la charge à alimenter est activé et transfère la charge électrique du condensateur à la charge de sortie, jusqu'à ce que la tension du condensateur passe au-dessous d'un autre seuil (VTL), moment auquel le convertisseur se désactive et le processus est répété. Pendant les moments d'inactivité du convertisseur, on obtient une valeur proportionnelle à la différence de puissances du transducteur correspondant à deux valeurs différentes de sa tension de sortie. Le calcul de ladite différence est fondé sur la mesure de temps de charge du condensateur. La réduction de la différence amène le transducteur à son point de puissance maximale.
AbstractList The method according to the invention transfers the energy captured by a transducer to a capacitor situated at the output thereof. When the voltage of the capacitor exceeds a certain threshold (WTH), a switched converter, situated between the transducer and the load which it is intended to supply, is activated and transfers the electrical charge from the capacitor to the output load until the voltage of the capacitor falls below another threshold (VTL), at which moment the converter is deactivated and the process is repeated. During the idle time of the converter, a value is obtained that is proportional to the difference in the power values of the transducer, corresponding to two different values of the output voltage thereof. This difference is calculated based on the measurement of the capacitor charging times and the transducer can be placed at the maximum power point thereof by minimising said difference. El método propuesto transfiere la energía captada por un transductor a un condensador situado a su salida. Cuando la tensión del condensador excede un cierto umbral (WTH), un convertidor conmutado situado entre el transductor y la carga que se pretende alimentar, se activa y transfiere la carga eléctrica del condensador a la carga de salida, hasta que la tensión del condensador baja por debajo de otro umbral (VTL), momento en el cual el convertidor se desactiva y el proceso se vuelve a repetir. Durante los tiempos de inactividad del convertidor se obtiene un valor proporcional a la diferencia de potencias del transductor correspondientes a dos valores diferentes de su tensión de salida. El cálculo de dicha diferencia se basa en la medida de tiempos de carga del condensador. Minimizando la diferencia se sitúa al transductor en su punto de máxima potencia. L'invention concerne un procédé qui permet de transférer de l'énergie captée par un transducteur à un condensateur situé à sa sortie. Lorsque la tension du condensateur dépasse un certain seuil (WTH), un convertisseur commuté situé entre le transducteur et la charge à alimenter est activé et transfère la charge électrique du condensateur à la charge de sortie, jusqu'à ce que la tension du condensateur passe au-dessous d'un autre seuil (VTL), moment auquel le convertisseur se désactive et le processus est répété. Pendant les moments d'inactivité du convertisseur, on obtient une valeur proportionnelle à la différence de puissances du transducteur correspondant à deux valeurs différentes de sa tension de sortie. Le calcul de ladite différence est fondé sur la mesure de temps de charge du condensateur. La réduction de la différence amène le transducteur à son point de puissance maximale.
Author LOPEZ LAPENA, OSCAR
PENELLA, MARIA TERESA
GASULLA FORNER, MANEL
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DocumentTitleAlternate MÉTODO Y CIRCUITO PARA LA BÚSQUEDA Y SEGUIMIENTO DEL PUNTO DE MÁXIMA POTENCIA DE TRANSDUCTORES DE ENERGÍA
PROCÉDÉ ET CIRCUIT POUR LA RECHERCHE ET LE SUIVI DU POINT DE PUISSANCE MAXIMALE DE TRANSDUCTEURS D'ÉNERGIE
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RelatedCompanies UNIVERSITAT POLITECNICA DE CATALUNYA
LOPEZ LAPENA, OSCAR
PENELLA, MARIA TERESA
GASULLA FORNER, MANEL
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Snippet The method according to the invention transfers the energy captured by a transducer to a capacitor situated at the output thereof. When the voltage of the...
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SourceType Open Access Repository
SubjectTerms CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONTROLLING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
SYSTEMS FOR STORING ELECTRIC ENERGY
Title METHOD AND CIRCUIT FOR LOCATING AND TRACKING THE MAXIMUM POWER POINT OF ENERGY TRANSDUCERS
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