POWER TRANSMISSION APPARATUS AND NON-CONTACT POWER SUPPLY SYSTEM
This power transmission apparatus transmits power to a power reception apparatus by means of a magnetic field resonance system by supplying an output AC voltage (V E ) of a class E amplifier (440) to a power-transmission side resonance circuit (TT). Before the transmission of power, the output AC vo...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | This power transmission apparatus transmits power to a power reception apparatus by means of a magnetic field resonance system by supplying an output AC voltage (V E ) of a class E amplifier (440) to a power-transmission side resonance circuit (TT). Before the transmission of power, the output AC voltage (V E ) of the class E amplifier (440) is divided, and a voltage obtained by the division is supplied to the power-transmission side resonance circuit (TT). A current amplitude detection value of a power-transmission side coil (T L ) at this time is obtained as an evaluation value, and whether to permit execution of power transmission is controlled on the basis of the evaluation value, through determination as to whether a foreign object is present or not. |
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