Sensing PM electrical machine position
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United States of America Patent
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Dec 29, 2015
Grant Date -
Feb 5, 2015
app pub date -
Aug 2, 2013
filing date -
Aug 2, 2013
priority date (Note) -
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Abstract
An electrical machine includes a stator having a stator winding and a secondary transformer coil. A rotor is operatively connected to rotate relative to the stator, wherein the rotor includes a plurality of embedded permanent magnets. A primary transformer coil is wound on the rotor and is operatively connected to form a rotating transformer with the secondary transformer coil. An inverter/active rectifier component is operatively connected to the stator winding and the secondary transformer coil to control the stator winding based on a sense in the secondary transformer coil received from the primary transformer coil.
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