PROBLEM TO BE SOLVED: To suitably switch a drive system with respect to a coupling coefficient determined by a relative position between a power transmission coil and a power reception coil.SOLUTION: A power transmission device 12 in a non-contact power supply system 10 includes a power transmission coil 37 and transmits, in a non-contact manner, AC power from the power transmission coil 37 to a power reception coil 38 of a power reception device 13. The power transmission device comprises: an inverter circuit 16 that is connected to a DC power supply 11, includes switches SW1 to SW4 connected in a full bridge form, and outputs AC power to the power transmission coil 37; and a power transmission control unit 60 for controlling the inverter circuit 16 to perform PWM control using a full bridge drive system or half bridge drive system. The power transmission control unit 60 performs control using the full bridge drive system when the inverter circuit's output voltage command value is larger than a threshold set on the basis of the upper limit value of output voltage in the half bridge drive system; and performs control using the half bridge drive system when the output voltage command value is smaller than the threshold.SELECTED DRAWING: Figure 1

    【課題】送電コイルと受電コイルとの相対位置で決定される結合係数に対して、好適に駆動方式を切り替える。【解決手段】送電コイル37を有し、受電装置13の受電コイル38に対して非接触で交流電力を前記送電コイル37から送電する非接触給電システム10の送電装置12であって、直流電源11に接続されており、フルブリッジ型に接続されているスイッチSW1〜SW4を有し、送電コイル37に交流電力を出力するインバータ回路16と、インバータ回路16を制御してフルブリッジ駆動方式又はハーフブリッジ駆動方式によるPWM制御を実施する送電制御部60を備え、送電制御部60は、インバータ回路の出力電圧指令値が、ハーフブリッジ駆動方式における出力電圧の上限値に基づき設定される閾値よりも大きい場合に、フルブリッジ駆動方式による制御を実施し、出力電圧指令値がその閾値よりも小さい場合に、ハーフブリッジ駆動方式による制御を実施する。【選択図】 図1


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    Title :

    POWER TRANSMISSION DEVICE IN NON-CONTACT POWER SUPPLY SYSTEM


    Additional title:

    非接触給電システムの送電装置


    Contributors:

    Publication date :

    2016-08-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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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