Method and apparatus of tracking of resonant impedance in resonance power transfer system
First Claim
1. An apparatus for tracking resonant impedance in a resonance power transfer system, the apparatus comprising:
- a load sensor configured to detect the impedance of a load connected to a target device that receives resonance power;
a target reflection signal detector configured to detect a reflection signal corresponding to the resonance power;
a target impedance tracking unit configured to track the resonant impedance by adjusting a determination factor of a resonant frequency; and
a target control unit configured to control the tracking of the resonant impedance based on whether there is a change of the impedance of the load, the reflection signal is detected, or both.
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Accused Products
Abstract
A resonance power transfer system and a method for tracking resonant impedance in the resonance power transfer system are provided. An apparatus for tracking resonant impedance in a resonance power transfer system may include: a load sensor configured to detect the impedance of a load connected to a target device that receives resonance power; a target reflection signal detector configured to detect a reflection signal corresponding to the resonance power; a target impedance tracking unit configured to track the resonant impedance by adjusting a determination factor of a resonant frequency; and a target control unit configured to control the tracking of the resonant impedance based on whether there is a change of the impedance of the load, the reflection signal is detected, or both.
14 Citations
18 Claims
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1. An apparatus for tracking resonant impedance in a resonance power transfer system, the apparatus comprising:
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a load sensor configured to detect the impedance of a load connected to a target device that receives resonance power; a target reflection signal detector configured to detect a reflection signal corresponding to the resonance power; a target impedance tracking unit configured to track the resonant impedance by adjusting a determination factor of a resonant frequency; and a target control unit configured to control the tracking of the resonant impedance based on whether there is a change of the impedance of the load, the reflection signal is detected, or both. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for tracking resonant impedance in a resonance power transfer system, the apparatus comprising:
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a source reflection signal detector configured to detect a reflection signal corresponding to resonance power transmitted to a target device; a target detector configured to detect a change of impedance with respect to the target device; a source impedance tracking unit configured to track resonant impedance by adjusting a determination factor of resonant frequency; and a source control unit configured to control the tracking of the resonant impedance based on whether at least one of the reflection signal and the change of the impedance with respect to the target device is detected. - View Dependent Claims (7, 8, 9, 10)
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11. A method of tracking resonant impedance of a target device in a resonance power transfer system, the method comprising:
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detecting an impedance of a load connected to the target device receiving resonance power and a change of the impedance of the load; performing tracking of resonant impedance based on whether the change of the impedance is detected and an amount of the change of the impedance; and controlling the tracking of the resonant impedance based on whether a reflection signal corresponding to the resonance power is detected. - View Dependent Claims (12, 13, 14)
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15. A method of tracking resonant impedance of a source device in a resonance power transfer system, the method comprising:
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detecting a change of impedance with respect to a target device that receives resonance power; performing tracking of resonant impedance based on whether the change of the impedance with respect to the target device is detected and an amount of the change of the impedance; and controlling tracking of the resonant impedance based on whether a reflection signal corresponding to the resonance power is detected. - View Dependent Claims (16, 17, 18)
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Specification