Systems and Methods of Reduction of Parasitic Losses in a Wireless Power System
First Claim
1. A method comprising:
- transferring power from a transmitter to a receiver in a wireless power system;
determining a presence of a parasitic loss in the wireless power system; and
reducing the power transmitted from the transmitter to a non-zero level.
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Accused Products
Abstract
Example embodiments of the systems and methods of reduction of parasitic losses in a wireless power system disclosed herein provide a practical means of accurately estimating parasitic losses in a wireless power transfer system irrespective of coupling. Such systems and methods may be used to generate an equation which predicts parasitic losses in a wireless power system. In an offset case, in which the transmitter and receiver are not directly coupled, losses associated with the recirculating current in the primary LC tank dominate the loss, and the transmitted power may be better estimated by measuring the power inputs, power outputs, and injected losses in a controlled environment; making a mathematical fit to an equation, which from the various power measurements and injected loss, predicts the expected transmitter losses; and then, in an operational environment, using the equation to predict parasitic losses based on the power inputs, power outputs and expected loss equation.
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Citations
20 Claims
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1. A method comprising:
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transferring power from a transmitter to a receiver in a wireless power system; determining a presence of a parasitic loss in the wireless power system; and reducing the power transmitted from the transmitter to a non-zero level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
a transmitter in a wireless power system configured to; transmit power to a receiver; receive information regarding the presence of a parasitic loss in the wireless power system; and reduce the power transmitted to a non-zero level. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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means for transmitting power to a receiver; means for receiving information regarding the presence of a parasitic loss in the wireless power system; and means for reducing the power transmitted to a non-zero level. - View Dependent Claims (20)
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Specification