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US 5,317,299 AGranted
Electromagnetic transformer
AssigneeSundstrand Corporation
InventorsP. John Dhyanchand, Jayant Vaidya, Rajhunath Mokadam, Richard Arbanella
Life of this patent
Estimating the term…
Abstract
A summing transformer having a core structure, first primary and secondary windings wound on the core structure for establishing a rotating electromagnetic field when the first primary winding is energized, and second primary and secondary windings wound on the core structure for establishing a rotating electromagnetic field when the second primary winding is energized, and wherein the second first and second secondary windings are connected together so that voltages induced therein are added.
Claims21
A rotating field summing transformer comprising:
- first and second core means for providing a path for electromagnetic flux;
- first primary winding means and first secondary winding means wound with respect to said first core means such that said first primary winding means and said first secondary winding means form a transformer for producing a rotating electromagnetic field when said first primary winding means is energized which induces a first secondary output in said first secondary winding means, said first primary winding means and said first secondary winding means being stationary with respect to one another;
- second primary winding means and second secondary winding means wound with respect to said second core means such that said second primary winding means and said second secondary winding means form a transformer for producing a rotating electromagnetic field when said second primary winding means is energized which induces a second secondary output in said second secondary winding means, said second primary winding means and said second secondary winding means being stationary with respect to one another;
- and,
- connecting means for connecting said first and second secondary winding means together so that said first and second secondary outputs add.
2 more elements
A transformer comprising:
- first core means having an outer and an inner periphery;
- second core means being disposed within said first core means and having an outer periphery substantially coextensive with said inner periphery of said first core means, said inner periphery of said first core means and said outer periphery of said second core means forming an interface between said first core means and said second core means;
- slot means having slots disposed along said interface;
- and
- primary winding means and secondary winding means wound in said slots such that an input signal supplied to said primary winding means establishes an electromagnetic flux in said first and second core means to induce an output signal in said secondary winding means.
2 more elements
A rotating field summing transformer comprising:
- core means for providing a path for electromagnetic flux;
- a first phase first primary winding, a second phase first primary winding, and a third phase first primary winding wound with respect to said core means so as to produce a rotating electromagnetic field when said first phase first primary winding, said second phase first primary winding, and said third phase first primary winding are energized;
- a first phase second primary winding, a second phase second primary winding, and a third phase second primary winding wound with respect to said core means so as to produce a rotating electromagnetic field when said first phase second primary winding, said second phase second primary winding, and said third phase second primary winding are energized;
- a first phase third primary winding, a second phase third primary winding, and a third phase third primary winding wound with respect to said core means so as to produce a rotating electromagnetic field when said first phase third primary winding, said second phase third primary winding, and said third phase third primary winding are energized;
- a first phase first secondary winding, a second phase first secondary winding, and a third phase first secondary winding wound with respect to the core means so that secondary voltages are induced therein upon energization of the first phase first primary winding, the second phase first primary winding, and the third phase first primary winding;
- a first phase second secondary winding, a second phase second secondary winding, and a third phase second secondary winding wound with respect to the core means so that secondary voltages are induced therein upon energization of the first phase second primary winding, the second phase second primary winding, and the third phase second primary winding;
- a first phase third secondary winding, a second phase third secondary winding, and a third phase third secondary winding wound with respect to the core means so that secondary voltages are induced therein upon energization of the first phase third primary winding, the second phase third primary winding, and the third phase third primary winding;
- first connecting means for connecting the first phase first secondary winding, the first phase second secondary winding, and the first phase third secondary winding so that secondary voltages induced therein add;
- second connecting means for connecting the second phase first secondary winding, the second phase second secondary winding, and the second phase third secondary winding so that secondary voltages induced therein add;
- and,
- third connecting means for connecting the third phase first secondary winding, the third phase second secondary winding, and the third phase third secondary winding so that secondary voltages induced therein add.
8 more elements
Dependencies are inferred from the claim text.