Abstract: A coil retention system for a rotor of a high speed electrical generator, such as an aircraft generator, that uses compliant material to fill variable dimension voids and/or gaps in the coils wound around the rotor of an electrical machine. During processing of the rotor and coil retention system, the compliant material hardens and is able to withstand the centrifugal loads imposed by, and environmental conditions within, the high speed generator.

Abstract: A coil retention system for a rotor of an electrical generator, such as an aircraft generator, that includes one or more components made of a high strength, lightweight composite material. By making one or more of the coil retention system components of a high strength, lightweight composite material, the generator can rotate at relatively high speeds, and can be built with a relatively small space between the generator rotor and stator. This allows the generator to supply greater output power without increasing the generator's size and/or weight.

Abstract: A coil retention system for a rotor of an electrical generator, such as an aircraft generator, that includes one or more components made of a high strength, lightweight composite material. By making one or more of the coil retention system components of a high strength, lightweight composite material, the generator can rotate at relatively high speeds, and can be built with a relatively small space between the generator rotor and stator. This allows the generator to supply greater output power without increasing the generator's size and/or weight.

Abstract: A rectifier hub and associated cooling method provide increased cooling efficiency for rotating rectifier diodes in a dry cavity generator. The rectifier hub has an inner and an outer circumferential surface and includes at least one pair of flow passages, and at least one flow channel. Each pair of flow passages extends between the hub inner and outer circumferential surfaces, and each flow channel is formed in the hub outer circumferential surface and couples the pair of flow passages in fluid communication with one another. This configuration allows a cooling medium to flow directly across the rectifier hub and cool the rectifier diodes mounted within drive cavities formed in the hub.

Abstract: The coil end-turn segments of a generator exciter rotor are retained using an end-turn retention assembly that includes an inner band and an outer band. The inner band is located around at least a portion of each of the end-turn segments and has two ends. The outer peripheral surface of the inner band is tapered such that the thickness of the inner band varies between its ends. The outer band is located around the inner band and also has two ends. The inner peripheral surface of the outer band is tapered in a fashion that is reverse to that of the inner band outer surface, and such that the outer band thickness varies between its ends. By forming oppositely configured tapers in the inner and outer bands, the outer bands will remain in place and not migrate axially away from the lamination core during exciter rotor rotation.

Abstract: The coil end-turn segments of a generator exciter rotor are retained using an end-turn retention assembly that includes an inner band and an outer band. The inner band is located around at least a portion of each of the end-turn segments and has two ends. The outer peripheral surface of the inner band is tapered such that the thickness of the inner band varies between its ends. The outer band is located around the inner band and also has two ends. The inner peripheral surface of the outer band is tapered in a fashion that is reverse to that of the inner band outer surface, and such that the outer band thickness varies between its ends. By forming oppositely configured tapers in the inner and outer bands, the outer bands will remain in place and not migrate axially away from the lamination core during exciter rotor rotation.

Abstract: A lubricating and cooling system for a high speed generator that directs a lubricating and cooling medium through the generator housing. The lubricating and cooling medium may be supplied to the generator on either end of the housing. A portion of the medium is supplied to the generator bearings. The remaining portion then flows through the rotor shaft, through the rotor, back to the shaft, where a portion may be sprayed onto the rectifier assemblies, then passed through the stator, and out of the generator.

Abstract: A rectifier hub and associated cooling method provide increased cooling efficiency for rotating rectifier diodes in a dry cavity generator. The rectifier hub has an inner and an outer circumferential surface and includes at least one pair of flow passages, and at least one flow channel. Each pair of flow passages extends between the hub inner and outer circumferential surfaces, and each flow channel is formed in the hub outer circumferential surface and couples the pair of flow passages in fluid communication with one another. This configuration allows a cooling medium to flow directly across the rectifier hub and cool the rectifier diodes mounted within drive cavities formed in the hub.

Abstract: A multi-pole high speed generator includes a rectifier module assembly that is dimensioned to be mounted within the hub of a high speed generator exciter armature includes a rectifier module assembly includes a substantially flat base that has a plurality of conductive circuit runs formed on it, and which is dimensioned to be mounted within a hub of the exciter. A first diode circuit, which includes an anode and a cathode, has its anode electrically coupled to a first of the plurality of conductive circuit runs. A second diode circuit, which also includes an anode and a cathode, has its cathode electrically coupled to a second of the plurality of conductive circuit runs. A conductive element electrically couples together the cathode of the first diode circuit and the anode of the second diode circuit.

Abstract: A lubricating and cooling system for a high speed generator that directs a lubricating and cooling medium through the generator housing. The lubricating and cooling medium may be supplied to the generator on either end of the housing. A portion of the medium is supplied to the generator bearings. The remaining portion then flows through the rotor shaft, through the rotor, back to the shaft, where a portion may be sprayed onto the rectifier assemblies, then passed through the stator, and out of the generator.

Abstract: A multi-pole high speed generator includes a rectifier module assembly that is dimensioned to be mounted within the hub of a high speed generator exciter armature includes a rectifier module assembly includes a substantially flat base that has a plurality of conductive circuit runs formed on it, and which is dimensioned to be mounted within a hub of the exciter. A first diode circuit, which includes an anode and a cathode, has its anode electrically coupled to a first of the plurality of conductive circuit runs. A second diode circuit, which also includes an anode and a cathode, has its cathode electrically coupled to a second of the plurality of conductive circuit runs. A conductive element electrically couples together the cathode of the first diode circuit and the anode of the second diode circuit.