Magnetic flux sensor for laminated cores
AssigneeWestinghouse Electric Corp.
InventorsRaymond M. Calfo, Arthur Mulach
Life of this patent
Estimating the term…
Abstract
A flux sensor is provided for measuring magnetic flux in laminated cores, and especially for measuring the axial flux in the end regions of the stator cores of large generators. The sensor comprises a flat, multi-turn coil of fine wire enclosed in an insulating enclosure which includes a pressure-supporting member of greater thickness than the coil. The sensor is thin enough to be placed between the laminations of a generator core and the high clamping pressure is carried by the pressure-supporting member which protects the coil. The leads are flat conductors brought out between the laminations to the periphery of the core. Such a sensor can remain permanently embedded in the core since it does not effect the core structure.
Claims4
In combination:
- a magnetic core comprising a plurality of laminations clamped together under pressure;
- flux sensing means embedded in said core, said sensing means comprising a flat, multi-turn coil located between two adjacent ones of said plurality of laminations and parallel to the plane of said laminations proximate the end region of the core in a position to sense axial magnetic flux, said coil having no magnetic material extending through the turns thereof, said coil having flat conductive leads extending therefrom and between said two adjacent laminations to the exterior of said magnetic core;
- means for insulatively enclosing said coil and for supporting the pressure contact of said adjacent laminations, said means having a total thickness greater than that of said coil.
Dependencies are inferred from the claim text.