To provide a wireless power supply system in which the efficiency and safety can be ensured at low cost to perform switching control of power supply circuits.SOLUTION: A wireless power supply system 10 includes power supply coils 14 that are arranged at a prescribed interval along a traveling direction of an electric vehicle 1 and that supply power to a mobile object in a non-contact manner, switches 17A, 17B, 17C that are disposed so as to correspond to each of the power supply coils 14, a current sensor 16 that measures the values of currents flowing through the power supply coils 14, and a DSP 15 that estimates the speed of the electric vehicle 1 by using a time period in which a current value during power supply from each of the power supply coils 14 to the electric vehicle 1 that is traveling is greater than a prescribed first threshold, the length of an interval time between the time periods, and the interval between the power supply coils, and that controls the on/off switching timings of the switches 17A, 17B, 17C on the basis of the speed of the electric vehicle 1.SELECTED DRAWING: Figure 2

    【課題】低コストで効率及び安全性を担保できる給電回路の切り替え制御を行うワイヤレス給電システムを提供する。【解決手段】ワイヤレス給電システム10は、電気自動車1の走行方向に沿って所定の間隔で配置され、移動体へ非接触で給電する給電コイル14と、複数の給電コイル14のそれぞれに対応して設けられるスイッチ17A、17B、17Cと、給電コイル14に流れる電流値を測定する電流センサ16と、複数の給電コイル14のそれぞれから走行中の電気自動車1へ給電している際の電流値が所定の第1閾値を超えた期間と、該期間の間のインターバル期間との長さと、給電コイルの間隔と、を用いて電気自動車1の速度を推定し、電気自動車1の速度に基づいてスイッチ17A、17B、17Cのそれぞれのオン又はオフの切り替えタイミングを制御するDSP15と、を備える。【選択図】図2


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    Titel :

    WIRELESS POWER SUPPLY SYSTEM


    Weitere Titelangaben:

    ワイヤレス給電システム


    Beteiligte:
    IMURA TAKEHIRO (Autor:in) / OKAZAKI AKIHIRO (Autor:in)

    Erscheinungsdatum :

    2024-03-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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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