WIRELESS POWER TRANSMISSION SYSTEM
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United States of America Patent
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app pub date -
Apr 29, 2015
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Dec 27, 2012
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Abstract
A wireless power transmission system in which power is transmitted from a power transmitting apparatus to a power receiving apparatus that includes: a diode bridge formed of first and second diodes whose anodes are connected to each other, and third and fourth diodes whose cathodes are connected to each other; series circuits formed of semiconductor switching devices and capacitors respectively connected in parallel with the first and second diodes, and a control circuit that inputs a modulation signal to the gates of the semiconductor switching devices. The power transmitting apparatus includes a controller that reads the modulation signal on a basis of a change in a DC current input at an input terminal. The a wireless power transmission system can transmit data from the power receiving apparatus to the power transmitting apparatus without interrupting power transmission, reducing output voltage variations, and suppressing degradation of power transmission characteristics.
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