Motor Generator With Improved Air Gap Flux Alignment
AssigneeHenry K. Obermeyer
InventorsHenry K. Obermeyer, Tanner Grider
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Abstract
The present inventions include a rotating electromagnetic machine such as a motor or generator wherein changes of flux direction adjacent the air gap are avoided. The disclosed improvements apply to permanent magnet alternators, induction motors and generators, doubly fed induction generators, and the like. Adaptation of coils to and fixation within the required slot geometries are disclosed. Excitation systems co-located within the primary rotor core and primary stator core are also disclosed. The use of rubber vulcanized to the rotor in conjunction with a stainless steel rotor sleeve is also disclosed.
Claims9
A rotating electrical machine comprising an alternating current stator with stator slots, a rotor that rotates relative to said alternating current stator, an air gap between said stator and said rotor, and a magnetic flux that crosses said air gap, wherein the stator slots are substantially aligned with said magnetic flux at rated load conditions.
A rotating electrical machine comprising an alternating current stator, a rotor that rotates relative to said alternating current stator, a gap between said stator and said rotor, and a magnetic flux that crosses said gap, wherein the rotor magnetization is substantially aligned with said magnetic flux at rated load.
A rotating electrical machine comprising an alternating current stator with stator slots, a rotor that rotates relative to said alternating current stator, an air gap between said stator and said rotor, and a magnetic flux that crosses said air gap, wherein said stator slots are substantially aligned with said magnetic flux that crosses the air gap at rated load conditions and wherein the rotor magnetization is substantially aligned with said magnetic flux that crosses the air gap at said rated load conditions.
A rotating electrical machine excitation system co-located with a rotating electrical machine, comprising a stator with at least one AC coil and at least one DC coil, and a rotor, wherein said DC coil in the otherwise AC stator generates AC power in the rotor that is otherwise of non-alternating magnetic flux, wherein said AC power in the rotor is rectified to DC power within the rotor and used to excite a rotor field coil.
A coil fixation system for rotating electrical machines comprising electrical coils and elastomeric packers, wherein said coils are secured with the aid of said elastomeric packers, wherein said packers are stretched thin for assembly and positioning of said coils, then allowed to return to an unstretched condition for a tight fit after said coils are assembled and positioned.
A submersible rotating electrical machine including a rotor, a stainless steel sleeve fitted to said rotor, a gap aside said sleeve, a layer of rubber aside said gap, and a stator, wherein said layer of rubber is bonded to said stator.
Dependencies are inferred from the claim text.