Bolted spherical series and phase connector for stator coils of electrical generators
First Claim
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1. An electrical generator comprising:
- at least one pair of stator coil sections having spaced apart ends each having a header cap configured to define a spherical geometry, wherein each header cap comprises split header cap portions of a conductive material to provide at least two parallel paths for passing a respective flow of electric current;
an electrical insulating material interposed between said split header cap portions;
a connector for connecting said pair of coil sections at their ends through said header caps, wherein said connector is configured to maintain electrically insulated said at least two parallel paths for passing the respective flow of electric current, wherein said connector comprises at least two connecting bars of a conductive material;
an air gap interposed between said at least two connecting bars, wherein each of said bars includes two detents configured with a geometry complementary relative to the geometry of the header caps for tightly receiving said header caps; and
means for mechanically affixing said at least two connecting bars to one another while maintaining said air gap there between.
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Abstract
A connector arrangement and techniques are provided for reducing eddy current losses and/or skin effects while enabling more readily serviceable series and phase connections between the coil ends 12 and 18 of a generator stator 10. This may be achieved by providing a connecting structure 24 that enables two parallel electrically conductive paths 26 and 28 that are electrically insulated from one another for passing a respective flow of electric current between the coil ends.
25 Citations
6 Claims
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1. An electrical generator comprising:
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at least one pair of stator coil sections having spaced apart ends each having a header cap configured to define a spherical geometry, wherein each header cap comprises split header cap portions of a conductive material to provide at least two parallel paths for passing a respective flow of electric current;
an electrical insulating material interposed between said split header cap portions;
a connector for connecting said pair of coil sections at their ends through said header caps, wherein said connector is configured to maintain electrically insulated said at least two parallel paths for passing the respective flow of electric current, wherein said connector comprises at least two connecting bars of a conductive material;
an air gap interposed between said at least two connecting bars, wherein each of said bars includes two detents configured with a geometry complementary relative to the geometry of the header caps for tightly receiving said header caps; and
means for mechanically affixing said at least two connecting bars to one another while maintaining said air gap there between. - View Dependent Claims (2, 3, 4)
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5. A method for connecting at least one pair of stator coil sections in an electrical generator, said coil sections having spaced apart ends and each having a conductive header cap configured to define a spherical geometry, said method comprising:
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constructing said header cap to provide at least two parallel paths for passing a respective flow of electric current;
interposing an electrical insulating material between said at least two parallel paths;
connecting said pair of coil sections at their ends through said header caps by way of at least two connector bars of a conductive material, wherein said connecting comprises connecting the connector bars to maintain electrically insulated said at least two parallel paths for passing the respective flow of electric current;
interposing an air gap between said at least two connector bars;
providing in said bars respective detents having a geometry complementary relative to the geometry of the header caps for tightly receiving said header caps; and
mechanically affixing said at least two connecting bars to one another while maintaining said air gap there between. - View Dependent Claims (6)
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Specification