Lightweight high power electromotive device
First Claim
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1. An electromotive device comprising, in combination:
- a stator inductor composed of a plurality of magnetic flux conducting stator bars, said stator bars each having a longitudinal grain orientation, and an electrical conductor disposed as randomly dispersed windings around said plurality of stator bars for creating an electromagnetic field;
means adjacent said inductor for generating a magnetic field within said electromotive device;
said stator bars being of a geometry wherein said windings are shielded from such magnetic field within said electromotive device and for providing a first flux return path for substantially all of the flux, said flux return path being generally perpendicular to such grain orientation through said stator bar; and
a second flux return path proximate said magnetic field generating means.
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Abstract
An electromotive device is disclosed which utilizes stacks of oriented magnetic material as stator bars. Electrical conductors are wound about the stator bars to create a stator inductor. The stator bars are generally configured to shield the electrical conductor winding from electromagnetic forces and further, to provide a first flux return path for the magnetic flux created by magnets fixed to a rotor for movement with respect to the stator inductor.
147 Citations
16 Claims
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1. An electromotive device comprising, in combination:
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a stator inductor composed of a plurality of magnetic flux conducting stator bars, said stator bars each having a longitudinal grain orientation, and an electrical conductor disposed as randomly dispersed windings around said plurality of stator bars for creating an electromagnetic field; means adjacent said inductor for generating a magnetic field within said electromotive device; said stator bars being of a geometry wherein said windings are shielded from such magnetic field within said electromotive device and for providing a first flux return path for substantially all of the flux, said flux return path being generally perpendicular to such grain orientation through said stator bar; and a second flux return path proximate said magnetic field generating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electromotive device comprising, In combination:
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a first stator inductor composed of a first set of magnetic flux conducting stator bars, each of said first set of stator bars having a longitudinal grain orientation, and a first electrical conductor disposed as randomly dispersed windings around said first set of stator bars for creating an electromagnetic field; means adjacent said first stator inductor for generating a magnetic field within said electromotive device; a second stator inductor composed of a second set of magnetic flux conducting stator bars, each of said second set of stator bars having a longitudinal grain orientation, and a second electrical conductor disposed as randomly dispersed windings around said second set of stator bars for creating a second electromagnetic field, said second stator inductor being positioned in opposed relationship with said first stator inductor wherein said magnetic field generating means is positioned therebetween; said first and second stator inductors having respective stator bars of a geometry wherein said respective windings from such magnetic field within said electromotive device and for providing a first flux return path and a second flux return path for substantially all of the flux, said first and second flux return paths being generally perpendicular to such respective grain orientations through each respective set of stator bars.
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15. An electromotive device comprising, in combination, a fan assembly having a stator inductor composed of a plurality of magnetic flux conducting stator bars with an electrical conductor disposed as randomly dispersed windings around said plurality of stator bars for creating an electromagnetic field positioned on a housing member encompassing a fan member;
- means for generating a magnetic field positioned on said fan member in a position proximate said stator inductor;
said stator bars being of a geometry wherein said windings are shielded from said magnetic field within said electromotive device and for providing a first flux return path through said stator bars; and
a second flux return path positioned on said fan member proximate said magnetic field generating means.
- means for generating a magnetic field positioned on said fan member in a position proximate said stator inductor;
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16. An electromotive device comprising, in combination:
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a fan assembly having a stator inductor composed of a plurality of magnetic flux conducting stator bars, said stator bars each having a longitudinal grain orientation, and an electrical conductor disposed as randomly dispersed windings around said plurality of stator bars for creating an electromagnetic field, said stator inductor being positioned on a housing member encompassing a fan member; means for generating a magnetic field within said electromotive device positioned on said fan member in a position proximate to said stator inductor;
said stator bars being of a geometry wherein said windings are shielded from such magnetic field within said electromotive device and for providing a first flux return path for substantially all of the flux, said flux return path being generally perpendicular to such grain orientation through said stator bars; anda second flux return path positioned on said fan member proximate said magnetic field generating means.
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Specification