In a contactless power feeding system (10) using a resonance method, an electric power receiving apparatus (110) or an electric power transmitting apparatus (200) is connected to a self-resonant coil (112, 224) and includes a capacitor (116, 280A) having a variable capacitance. When electromagnetic resonance occurs at a prescribed frequency determined by the electric power transmitting apparatus (200), the capacitance of the capacitor (116, 280A) is adjusted so as to maximize the electric power transmission efficiency during electric power feeding. Accordingly, deterioration in transmission efficiency can be suppressed even when the distance between the secondary self-resonant coil (112) included in the electric power receiving apparatus (110) and the primary self-resonant coil (224) included in the electric power transmitting apparatus (200) changes from a reference distance at the time of design.


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    Title :

    CONTACTLESS ELECTRIC POWER RECEIVING APPARATUS, CONTACTLESS ELECTRIC POWER TRANSMITTING APPARATUS, CONTACTLESS ELECTRIC POWER FEEDING SYSTEM, AND VEHICLE


    Additional title:

    KONTAKTFREIE LEISTUNGSAUFNAHMEVORRICHTUNG, KONTAKTFREIE LEISTUNGSÜBERTRAGUNGSVORRICHTUNG, KONTAKTFREIES LEISTUNGSVERSORGUNGSSYSTEM UND FAHRZEUG
    APPAREIL DE RECEPTION DE COURANT ÉLECTRIQUE SANS CONTACT, APPAREIL DE TRANSMISSION DE COURANT ÉLECTRIQUE SANS CONTACT, SYSTÈME D'ALIMENTATION ÉLECTRIQUE SANS CONTACT, ET VÉHICULE


    Contributors:

    Publication date :

    2018-09-05


    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