Hamilton Sundstrand Corporation

James H Clemmons

Richard Andrew Himmelmann

Scott P Wilkinson

Si Jian Fang

Si J Fang

A 'Y'-shaped transformer includes a 'Y' shaped magnetic core that includes a top portion and a bottom portion. The top portion and the bottom portion both include a plurality of &#x201c;Y&#x201d;-shaped laminates stacked on top of one another and bent to form a plurality of core limbs. A plurality of input windings are wound around each of the plurality of core limbs. A plurality of output windings wound are wound around each of the plurality of core limbs.

Laminated 'Y'-core transformer

A permanent magnet comprises a primary winding, a secondary winding, a permanent magnet, an output terminal for connection to an external load, and a switching mechanism with two modes. In a first mode of the switching mechanism, the primary winding is connected between neutral and the output terminal, and the varying magnetic flux from the permanent magnet induces a nonzero voltage at the output terminal. In the second mode, the secondary winding provides a return path to neutral for the primary winding, thereby providing negligible voltage and current at the output terminal and substantially canceling change in magnetic flux from the permanent magnet.

Flux cancellation in a permanent magnet generator

An improved inductor for a DC link that has an auxiliary winding for inducing an opposing magnetic field in a magnetically permeable core with an auxiliary DC current that opposes a magnetic field that a primary winding for the inductor induces along a magnetic path in the core with a DC component of current to reduce magnetic saturation of the inductor due to the DC component.

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Freeport, IL, United States of America

James H Clemmons