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.
POWER TRANSMISSION DEVICE, NON-CONTACT POWER SUPPLY SYSTEM, POWER TRANSMISSION METHOD, AND PROGRAM
STROMÜBERTRAGUNGSVORRICHTUNG, KONTAKTLOSES STROMVERSORGUNGSSYSTEM, STROMÜBERTRAGUNGSVERFAHREN UND PROGRAMM
DISPOSITIF DE TRANSMISSION D'ÉNERGIE, SYSTÈME D'ALIMENTATION ÉLECTRIQUE SANS CONTACT, PROCÉDÉ DE TRANSMISSION D'ÉNERGIE ET PROGRAMME
2025-01-08
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 / 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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