ADAPTIVE INDUCTIVE POWER SUPPLY
First Claim
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1. A method for controlling operation of an inductive power supply system, comprising the steps of:
- establishing an inductive coupling between the inductive power supply and a remote device having a secondary inductor in electrical communication with a load, the inductive power supply having a controller and a tank circuit;
adaptively adjusting a variable impedance element of the inductive power supply when the remote device is inductively coupled with the inductive power supply; and
adjusting an operating frequency of the inductive power supply, wherein adjusting the operating frequency of the inductive power supply includes adjusting a drive circuit with the controller.
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Abstract
A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable of modifying the resonant frequency of the tank circuit, the inverter frequency, the inverter duty cycle or the rail voltage of the DC power source.
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Citations
20 Claims
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1. A method for controlling operation of an inductive power supply system, comprising the steps of:
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establishing an inductive coupling between the inductive power supply and a remote device having a secondary inductor in electrical communication with a load, the inductive power supply having a controller and a tank circuit; adaptively adjusting a variable impedance element of the inductive power supply when the remote device is inductively coupled with the inductive power supply; and adjusting an operating frequency of the inductive power supply, wherein adjusting the operating frequency of the inductive power supply includes adjusting a drive circuit with the controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inductive power supply for supplying power to a remote device, said inductive power supply comprising:
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a primary configured to transfer power to said remote device; and a controller in communication with said primary, said controller programmed to; adaptively adjust a variable impedance element of said inductive power supply when said remote device is inductively coupled with said inductive power supply; and adjust an operating frequency of said inductive power supply. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for controlling supply of wireless power to a remote device, comprising the steps of:
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establishing an inductive coupling between an inductive power supply and the remote device, the remote device having a secondary inductor in electrical communication with a load; and adaptively adjusting a variable impedance element of the remote device when the remote device is inductively coupled with the inductive power supply. - View Dependent Claims (18, 19, 20)
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Specification