A power transmission system for wirelessly supplying power to a load comprising a transmitter inductor, a first switch coupled between a voltage source and the transmitter inductor and controlled to generate a varying current through the transmitter inductor, a receiver inductor magnetically coupled to the transmitter inductor, a voltage regulator receiving power from the receiver inductor to generate a regulator output voltage, a load coupled to an output of the voltage regulator, wherein power in the transmitter inductor is wirelessly coupled to the receiver inductor for being converted to a regulated voltage by the regulator for driving the load, a peak voltage detector coupled to detect a peak voltage on the transmitter inductor, wherein a peak voltage on the transmitter inductor is affected by an ability of the voltage regulator to achieve regulation for driving the load and a controller for controlling a peak current through the transmitter inductor, the controller being controlled to modulate the peak current through the transmitter inductor so as to modulate a peak current through the receiver inductor, wherein the peak voltage on the transmitter inductor increases during a time when the voltage regulator is able to achieve regulation, wherein the controller is configured to terminate modulating the peak current through the transmitter inductor, based on a change in the peak voltage, so that the voltage regulator is able to achieve regulation.
AUTO RESONANT DRIVER FOR WIRELESS POWER TRANSMITTER SENSING REQUIRED TRANSMIT POWER FOR OPTIMUM EFFICIENCY
SELBSTRESONANTER TREIBER ZUR ERFASSUNG DER FÜR EINEN DRAHTLOSEN STROMÜBERTRÄGER ERFORDERLICHEN ÜBERTRAGUNGSLEISTUNG FÜR OPTIMALEN WIRKUNGSGRAD
CIRCUIT D'ATTAQUE RÉSONNANT AUTOMATIQUE POUR ÉMETTEUR D'ÉNERGIE SANS FIL DE DÉTECTION DE LA PUISSANCE DE TRANSMISSION REQUISE POUR UNE EFFICACITÉ OPTIMALE
2018-03-14
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01F MAGNETS , Magnete / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H04B TRANSMISSION , Übertragung |
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