Electric power receiving device and method of receiving electric power
First Claim
1. An electric power receiving device that receives an electric power from a primary coil with which a first alternating voltage is applied and through which a first alternating current flows, the electric power receiving device comprising:
- a series resonance circuit that comprises a secondary coil electromagnetically-coupled to the primary coil and a capacitor connected to the secondary coil in series and generates a second alternating voltage based upon the first alternating current; and
a reducing-voltage generating section that generates a reducing-voltage and applies the reducing voltage to the series resonance circuit, the reducing-voltage being capable of reducing a reactance voltage generated in the series resonance circuit by a second alternating current generated in the series resonance circuit, due to the second alternating voltage, and the reducing-voltage being equal to the second alternating voltage in frequency.
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Accused Products
Abstract
An electric power receiving device according to the invention receives an electric power from a primary coil, with which a first alternating voltage is applied and through which a first alternate current flows. The device includes an electric power receiving section and a reducing-voltage generating section. The receiving section includes a secondary coil electromagnetically coupled to the primary coil and a capacitor connected to the secondary coil, and generates a second alternating voltage based upon the first alternating current. The generating section generates a reducing-voltage and applies the reducing-voltage to the receiving section, the reducing-voltage being capable of reducing a reactance voltage generated in the receiving section by a second alternating current generated in the receiving section due to the second alternating voltage, and the reducing-voltage being approximately equal to the second alternating voltage in frequency.
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Citations
12 Claims
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1. An electric power receiving device that receives an electric power from a primary coil with which a first alternating voltage is applied and through which a first alternating current flows, the electric power receiving device comprising:
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a series resonance circuit that comprises a secondary coil electromagnetically-coupled to the primary coil and a capacitor connected to the secondary coil in series and generates a second alternating voltage based upon the first alternating current; and a reducing-voltage generating section that generates a reducing-voltage and applies the reducing voltage to the series resonance circuit, the reducing-voltage being capable of reducing a reactance voltage generated in the series resonance circuit by a second alternating current generated in the series resonance circuit, due to the second alternating voltage, and the reducing-voltage being equal to the second alternating voltage in frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of receiving an electric power from a primary coil with which a first alternating voltage is applied and through which a first alternating current flows, the method comprising:
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generating a second alternating voltage based upon the first alternating current in a series resonance circuit that comprises a secondary coil electromagnetically-coupled to the primary coil and a capacitor connected to the secondary coil in series; generating a reducing-voltage, the reducing-voltage being capable of reducing a reactance voltage generated in the series resonance circuit by a second alternating current generated in the series resonance circuit, due to the second alternating voltage, and the reducing-voltage being equal to the second alternating voltage in frequency; and applying the reducing-voltage to the series resonance circuit.
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Specification