Electricity: single generator systems – Generator control – Magnetic structure
Patent
1995-05-05
1997-02-25
Stephan, Steven L.
Electricity: single generator systems
Generator control
Magnetic structure
322 89, 322 90, 310190, 310184, 310187, H02P 940
Patent
active
056062478
ABSTRACT:
A mechanical gear drive system capable of generating electric power comprises a plurality of gears having a plurality of teeth separated by a tooth gap, a U-shaped core having two legs separated by at least one tooth gap, and a yoke. This core is positioned in close proximity to the teeth of the gear. A coil is wound on the yoke, and a converter selectively couples and decouples this coil from a dc power source. The converter has at least a first and a second switch and at least a first and a second diode for cross-coupling the coil to the source to allow current flow back when the switches are disabled. The converter enables the switches prior to alignment of the teeth of the gear with the legs of the core. This couples the coil to the source of dc power and allows dc current to flow from the source through the switches and the coil. When the converter disables the switches after alignment of the teeth with the legs, the coil is decoupled from said source. DC current is then forced to flow back from the coil, through the diodes, and to the source to allow generation of electric. The source of dc power comprises a second U-shaped core having two legs and a permanent magnetic yoke. A second coil is wound on the magnetic yoke, and a rectifier is coupled to this coil for rectifying the electrical output generated in response to the rotation of the gear.
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James R. Hendershot, Short Flux Paths Cool SR Motors, Machine Design, Sep. 21, 1989, pp. 106-111.
Makeever Jeffery J.
Ponomarenko Nicholas
Stephan Steven L.
Sundstrand Corporation
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