A power-receiving device (21) includes a secondary coil (23a), which wirelessly receives AC power from a power-supply device (11) having a primary coil (13a), a variable load (22), in which an impedance changes in accordance with the power value of the input power, a PFC circuit (24) having a first switching element (33), and a DC/DC converter (25) having a second switching element (41). The PFC circuit (24) rectifies the AC power received by the secondary coil (23a) and improves the power factor by adjusting the duty cycle in switching operation of the first switching element in accordance with the impedance fluctuation of the variable load. The DC/DC converter (25) is configured to convert the voltage of the DC power obtained through rectification to a different voltage and output the converted voltage to the variable load, and to adjust the duty cycle in switching operation of the second switching element in accordance with the impedance fluctuation of the variable load.


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    Title :

    POWER RECEIVING DEVICE AND CONTACTLESS POWER TRANSMISSION DEVICE


    Additional title:

    DRAHTLOSENERGIEÜBERTRAGUNGSVORRICHTUNG UND KONTAKTLOSE ENERGIEÜBERTRAGUNGSVORRICHTUNG
    DISPOSITIF DE RÉCEPTION DE PUISSANCE ET DISPOSITIF D'ÉMISSION DE PUISSANCE SANS CONTACT


    Contributors:

    Publication date :

    2016-06-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / 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




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