Inductive power transfer apparatus with AC and DC output
First Claim
1. An inductive power transfer system (IPT) pick-up comprising:
- a pick-up coil capable of generating a voltage by magnetic induction from a primary conductive pathway, and a tuning capacitor associated with the pick-up coil to provide a first pick-up resonant circuit;
a first output associated with a first control to substantially control a voltage or current provided by the first output;
a further resonant circuit connected in series or parallel with the first pick-up resonant circuit; and
a second output associated with a second control to control a voltage or current provided by the second output;
wherein the first output and second output are electrically associated with the pick-up coil, the pick-up coil generates an alternating current (AC) output, and the first output is generated from the AC output of the pick-up coil without rectification.
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Accused Products
Abstract
An inductive power transfer system (IPT) pick-up comprises: a pick-up coil capable of generating a voltage by magnetic induction from a primary conductive pathway, and a tuning capacitor associated with the pick-up coil to provide a first pick-up resonant circuit; a first output associated with a first control means to substantially control the voltage or current provided by the first output; a further resonant circuit connected in series or parallel with the first pick-up resonant circuit; and a second output associated with a second control means to control the voltage or current provided by the second output and a method of providing an additional independently controllable output from an IPT pick-up having a resonant pick-up circuit is also disclosed.
13 Citations
17 Claims
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1. An inductive power transfer system (IPT) pick-up comprising:
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a pick-up coil capable of generating a voltage by magnetic induction from a primary conductive pathway, and a tuning capacitor associated with the pick-up coil to provide a first pick-up resonant circuit; a first output associated with a first control to substantially control a voltage or current provided by the first output; a further resonant circuit connected in series or parallel with the first pick-up resonant circuit; and a second output associated with a second control to control a voltage or current provided by the second output; wherein the first output and second output are electrically associated with the pick-up coil, the pick-up coil generates an alternating current (AC) output, and the first output is generated from the AC output of the pick-up coil without rectification. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless power pick-up, comprising:
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a pick-up coil; at least one tuning capacitor connected to the pick-up coil to form a first resonant circuit with the pick-up coil, wherein the first resonant circuit is configured to supply power to a first electrical output of the wireless power pick-up; and a second resonant circuit connected to the pick-up coil, wherein the second resonant circuit is configured to supply power to a second electrical output of the wireless power pick-up, wherein the wireless power pick-up is configured to produce, without rectification, an alternating current (AC) at the first electrical output. - View Dependent Claims (7, 8, 9, 10, 11)
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- 12. An inductive power pick-up comprising at least two resonant circuits, wherein a first of the at least two resonant circuits comprises a pick-up coil and at least one tuning capacitor, and a second of the at least two resonant circuits is connected in series or in parallel with the first of the at least two resonant circuits, wherein the inductive power pick-up is configured to produce, without rectification, a controlled alternating current (AC) output from AC power received via the pick-up coil.
Specification