Power supply apparatus and method for controlling power supply apparatus
First Claim
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1. A power supply apparatus comprising:
- a resonant circuit that comprises a power supply coil and determines a resonant frequency;
a drive unit that drives the resonant circuit; and
a controller that causes the resonant frequency to change between a first resonant frequency and a second resonant frequency based on a phase difference between a phase of a drive signal of the drive unit and a phase of at least one of a current and a voltage flowing in the power supply coil being eliminated,wherein the first resonant frequency is higher than a frequency of the drive signal, andwherein the second resonant frequency is lower than the frequency of the drive signal.
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Abstract
A power supply apparatus includes a resonant circuit that determines a resonant frequency, a drive unit that drives the resonant circuit, and a controller that causes the resonant frequency to change between a first resonant frequency and a second resonant frequency. The first resonant frequency is higher than a frequency of a drive signal of the drive unit and the second resonant frequency is lower than the frequency of the drive signal.
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19 Claims
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1. A power supply apparatus comprising:
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a resonant circuit that comprises a power supply coil and determines a resonant frequency; a drive unit that drives the resonant circuit; and a controller that causes the resonant frequency to change between a first resonant frequency and a second resonant frequency based on a phase difference between a phase of a drive signal of the drive unit and a phase of at least one of a current and a voltage flowing in the power supply coil being eliminated, wherein the first resonant frequency is higher than a frequency of the drive signal, and wherein the second resonant frequency is lower than the frequency of the drive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for controlling a power supply apparatus, the method comprising:
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changing a resonant frequency of a resonant circuit between a first resonant frequency and a second resonant frequency based on a phase difference between a phase of a drive signal of a drive unit and a phase of at least one of a current and a voltage flowing in a power supply coil of the resonant circuit being eliminated, wherein the first resonant frequency is higher than a frequency of the drive signal, and the second resonant frequency is lower than the frequency of the drive signal. - View Dependent Claims (17, 18, 19)
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Specification