A power transmission apparatus (100) for wireless power transfer to a movable power receiving apparatus (200) includes a power transmission resonator (110) that includes a power transmission coil (112) and a transmission resonance capacitor unit (116), and a power transmission circuit (130) for supply of alternating-current power to the power transmission resonator. The power transmission apparatus includes a power-transfer request signal receiver (172) configured to receive a power-transfer request signal transmitted from the power receiving apparatus, and a switching unit (174). The switching unit is configured to, when the power-transfer request signal receiver receives the power-transfer request signal, change an input impedance of the power transmission resonator (110) to change a value of current flowing through the power transmission coil of the power transmission resonator to a controlled value enabled to transfer power from the power transmission coil to the power receiving apparatus.


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    Title :

    POWER TRANSMISSION DEVICE, NON-CONTACT POWER SUPPLY SYSTEM, POWER TRANSMISSION METHOD, AND PROGRAM


    Additional title:

    STROMÜBERTRAGUNGSVORRICHTUNG, KONTAKTLOSES STROMVERSORGUNGSSYSTEM, STROMÜBERTRAGUNGSVERFAHREN UND PROGRAMM
    DISPOSITIF DE TRANSMISSION D'ÉNERGIE, SYSTÈME D'ALIMENTATION ÉLECTRIQUE SANS CONTACT, PROCÉDÉ DE TRANSMISSION D'ÉNERGIE ET PROGRAMME


    Contributors:

    Publication date :

    2025-01-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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 / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES



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