Reluctance sensor for detection of a position of a rotor
AssigneeDiscovery Energy, LLC
InventorsIsaac S. Frampton, Adam Larson
Life of this patent
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Abstract
An electric machine includes at least a printed circuit board and a magnetically permeable element. The printed circuit board includes a reluctance coil configured to generate a voltage in presence of a magnetic flux. The magnetically permeable element has a first end positioned adjacent to a rotor of the electrical machine and a second end positioned adjacent to the coil of the printed circuit board. In some examples, rotation of the rotor causes a change in the magnetic flux through the magnetically permeable element and generation of the voltage across the reluctance coil.
Claims20
An electric machine comprising:
- a rotor;
- a stator portion formed on a printed circuit board, wherein magnetic flux flows between the stator portion and the rotor in response to relative rotation of the stator portion and the rotor;
- and
- a reluctance coil formed on the printed circuit board, the reluctance coil positioned circumferentially outward of the stator portion and configured to generate a voltage in presence of the magnetic flux.
An electric machine comprising:
- a rotor;
- a stator formed on a printed circuit board, wherein magnetic flux flows between the stator and the rotor in response to relative rotation of the stator and the rotor;
- and
- a reluctance sensor electrically coupled to the printed circuit board, the reluctance sensor positioned circumferentially outward of the stator and configured to generate a voltage in presence of the magnetic flux.
Dependencies are inferred from the claim text.