PROBLEM TO BE SOLVED: To provide a power transmission apparatus for non-contact power transmission system, capable of continuing power supply while suppressing generation of an overcurrent even when a change in a relative position of a power reception coil to a power transmission coil and/or a change in a load voltage.SOLUTION: A power transmission apparatus 12 for a non-contact power transmission system 10, including an inverter circuit 16 for outputting AC power by controlling opening and closing operations of switches SW1 to SW4 and a power transmission resonance circuit 17 for generating magnetic fluxes at a power transmission coil 37 by supplying AC power and transmitting electric power to a power reception resonance circuit 19, further includes: an immitance converter 18 provided between the inverter circuit 16 and the power transmission resonance circuit 17; a power transmission control part 60 for estimating a power transmission current running through the power transmission resonance circuit 17 on the basis of an output voltage of the inverter circuit 16 and when the estimated value exceeds a first threshold value, adjusts the output voltage of the inverter circuit 16.SELECTED DRAWING: Figure 1
【課題】受電コイルと送電コイルとの相対位置の変化、及び、負荷電圧の変化が生じた場合に、過電流を抑制しつつ電力供給を継続可能な非接触送電システムの送電装置を提供する。【解決手段】スイッチSW1〜SW4を開閉制御することで、交流電力を出力するインバータ回路16と、交流電力が供給されることで送電コイル37において磁束を発生させ、受電共振回路19に対して送電を行う送電共振回路17と、を備える非接触送電システム10の送電装置12において、インバータ回路16と、送電共振回路17との間に設けられるイミタンス変換器18と、インバータ回路16の出力電圧に基づいて、送電共振回路17に流れる送電電流を推定し、その推定値が第1閾値を超える場合に、インバータ回路16の出力電圧を調整する送電制御部60と、を備える。【選択図】 図1
POWER TRANSMISSION APPARATUS FOR NON-CONTACT POWER TRANSMISSION SYSTEM
非接触送電システムの送電装置
17.11.2016
Patent
Elektronische Ressource
Japanisch
IPC: | B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / 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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