Position sensing system
AssigneeControlled Power Technologies, Ltd.
InventorsDavid Pearce, Wayne Maddison
Life of this patent
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Abstract
A position sensing system for a switched reluctance machine, such as that of an Integrated Starter Generator, Turbogenerator or electric Supercharger wherein the system comprises a pair magnets, a magnet carrier, and a sensor element, wherein the sensor element is mounted upon an end of a rotatable shaft of the SR machine, and wherein the sensor element is mounted on a circuit board, and sits in a well formed by the magnets which are arranged such that the magnetic flux follows a path similar to that of a horseshoe magnet, and whereby magnetic flux produced by the magnets is concentrated within the well of the magnet carrier in a direction normal to the axial direction of the shaft of the SR machine.
Claims9
1-5. (canceled)
A position sensing system for a switched reluctance machine, the system comprising magnets, a magnet carrier, a sensor element and a sensor shield, wherein the magnet carrier is mounted upon an end of a rotatable shaft of the switched reluctance machine, wherein the sensor element is mounted on a circuit board and sits in a well formed by the magnets and magnet carrier in a manner whereby magnetic flux produced by the magnets is concentrated within the well in a direction normal to an axis of the shaft of the switched reluctance machine and wherein the sensor shield surrounds the sensor element such that the sensor shield shields the sensor element from electric interference caused by electrical switching of the switched reluctance machine.
Dependencies are inferred from the claim text.