Inductive power transfer system and method
AssigneeAuckland Uniservice Limited
InventorsGrant Anthony Covic, John Talbot Boys
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Abstract
Foreign object detection apparatus for an IPT system, includes a control means adapted to detect the presence of a foreign object on or adjacent to an IPT primary pad of the system.
Claims36
A foreign object detection apparatus for an IPT system, the apparatus comprising a control means adapted to detect the presence of a foreign object on or adjacent to an IPT primary pad of the system.
A method of operating an IPT system to detect the presence of a foreign object, the method including:
- determining an expected rate of power transfer;
- determining the actual rate of power transfer;
- and
- comparing the expected rate of power transfer with the actual rate of power transfer.
A foreign object detection apparatus for an IPT system, the apparatus comprising a control means adapted to determine VAR currents due to relative position between an IPT primary pad and an IPT secondary pad, and measure the actual VAR currents in the IPT primary pad to determine whether a foreign object is present on or adjacent to the IPT primary pad.
A method of operating an IPT system to detect the presence of a foreign object, the method including:
- determining VAR currents due to relative position of an IPT primary pad and an IPT secondary pad;
- and
- measuring the actual VAR currents in the IPT primary pad to determine whether a foreign object is present on or adjacent to the IPT primary pad.
35-79. (canceled)
Dependencies are inferred from the claim text.