Power transfer system
First Claim
1. A power transfer system comprising a transfer pick-up circuit for inductively picking up power from a cable carrying an alternating supply current, the alternating supply current alternates at a cable frequency, wherein said transfer pick-up circuit comprising:
- a first circuit comprising a secondary winding of a transformer for providing an inductive coupling to the cable and a first capacitive module connected in parallel to the transformer, wherein the first circuit has a first resonance in a first frequency range around first resonance frequency, anda second circuit connected in parallel to the first circuit and comprising a second inductive module and means to transfer power to a load, the means being in series with the second inductive module,wherein the first circuit and the second circuit together form the transfer pick-up circuit that is resonant, and wherein a resonance frequency of the transfer pick-up circuit comprising the load with nominal impedance, is closer to the cable frequency than the first resonance frequency.
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Accused Products
Abstract
Power transfer system including a transfer pick-up circuit for inductively picking up power from a cable carrying an alternating supply current. The power transfer system includes a first circuit having the secondary winding of a transformer for providing an inductive coupling to the cable and a first capacitive module connected in parallel to the transformer. The transfer pick-up circuit further includes a second circuit connected in parallel to the first circuit and has a second inductive module and a connection to transfer power to the load, the connection being in series with the second inductive module.
8 Citations
11 Claims
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1. A power transfer system comprising a transfer pick-up circuit for inductively picking up power from a cable carrying an alternating supply current, the alternating supply current alternates at a cable frequency, wherein said transfer pick-up circuit comprising:
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a first circuit comprising a secondary winding of a transformer for providing an inductive coupling to the cable and a first capacitive module connected in parallel to the transformer, wherein the first circuit has a first resonance in a first frequency range around first resonance frequency, and a second circuit connected in parallel to the first circuit and comprising a second inductive module and means to transfer power to a load, the means being in series with the second inductive module, wherein the first circuit and the second circuit together form the transfer pick-up circuit that is resonant, and wherein a resonance frequency of the transfer pick-up circuit comprising the load with nominal impedance, is closer to the cable frequency than the first resonance frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification