Inductive power transfer control using energy injection
First Claim
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1. A method for controlling an Inductive Power Transfer (IPT) system primary power supply having a switched resonant circuit;
- the method comprising;
determining the value of a parameter of the system;
determining a duration for an energy injection switching pattern comprising a plurality of cycles of a resonant frequency of the switched resonant circuit dependent on the parameter value;
determining the energy injection switching pattern; and
controlling one or more switches of the resonant circuit according to the determined energy injection switching pattern.
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Abstract
The invention relates to inductive power transfer (IPT) systems, and has particular relevance to control of IPT systems, and to operation of IPT system primary power supplier. There is provided a method for controlling an IPT system primary power supply having a switched resonant circuit; the method comprising: determining the value of a parameter of the system; determining an energy injection switching pattern having a duration dependent on the parameter value; controlling the resonant circuit according to the determined energy injection switching pattern.
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Citations
15 Claims
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1. A method for controlling an Inductive Power Transfer (IPT) system primary power supply having a switched resonant circuit;
- the method comprising;
determining the value of a parameter of the system; determining a duration for an energy injection switching pattern comprising a plurality of cycles of a resonant frequency of the switched resonant circuit dependent on the parameter value; determining the energy injection switching pattern; and controlling one or more switches of the resonant circuit according to the determined energy injection switching pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 15)
- the method comprising;
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10. An Inductive Power Transfer (IPT) system primary power supply having a switched resonant circuit, and comprising a controller configured to:
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receive the value of a parameter of the system; determine a duration for an energy injection switching pattern comprising a plurality of cycles of a resonant frequency of the switched resonant circuit dependent on the parameter value; determine the energy injection switching pattern; and control one or more switches of the switched resonant circuit according to the determined energy injection switching pattern. - View Dependent Claims (11, 12, 13, 14)
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Specification