APPARATUS AND METHOD FOR TRANSFERRING ELECTRICAL POWER TO A ROTATING SHAFT
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Dec 6, 2012
filing date -
Dec 7, 2011
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Abandoned
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Abstract
Apparatus and method for transferring electrical power to a rotating shaft. An apparatus for transferring electrical power to a rotating shaft, the apparatus includes a first winding in a stationary part of the apparatus around the shaft, a second winding on the shaft adjacent to the first winding, a sensing device adapted to sense the rotational frequency of the shaft, and a variable frequency drive. The variable frequency drive is adapted to adjust an input current frequency to the first winding as a function of the rotational frequency of the shaft, whereby a desired output voltage and frequency in the second winding on the shaft is obtained.
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