High speed generator with high-power rotating rectifiers cooling system
First Claim
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1. A high speed generator, comprising:
- a housing;
a shaft rotationally mounted within the housing;
a hub mounted on the shaft and having at least an inner circumferential surface, an outer circumferential surface, and at least one mounting cavity formed therebetween;
at least one rectifier assembly mounted in each hub mounting cavity;
at least one pair of flow passages extending between the hub inner and outer circumferential surfaces; and
at least one flow channel formned in the hub outer circumferential surface, the flow channel coupling the pair of flow passages in fluid communication with one another.
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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.
60 Citations
27 Claims
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1. A high speed generator, comprising:
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a housing;
a shaft rotationally mounted within the housing;
a hub mounted on the shaft and having at least an inner circumferential surface, an outer circumferential surface, and at least one mounting cavity formed therebetween;
at least one rectifier assembly mounted in each hub mounting cavity;
at least one pair of flow passages extending between the hub inner and outer circumferential surfaces; and
at least one flow channel formned in the hub outer circumferential surface, the flow channel coupling the pair of flow passages in fluid communication with one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A rotating rectifier assembly, comprising:
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a hub having at least an inner circumferential surface, an outer circumferential surface, and at least one mounting cavity formed therebetween;
at least one rectifier assembly mounted in the hub mounting cavity;
at least one pair of flow passages extending between the hub inner and outer circumferential surfaces; and
at least one flow channel formed in the hub outer circumferential surface, the flow channel coupling the pair of flow passages in fluid communication with one another. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A hub for supporting one or more rotating rectifier assemblies in a high speed generator, comprising:
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a substantially cylindrical inner member;
a substantially cylindrical outer member;
an intermediate member coupling the inner member to the outer member;
at least one pair of flow passages extending through the inner member, the intermediate member, and the outer member; and
at least one flow channel formed in an outer surface of the outer member, the flow channel coupling the pair of flow passages in fluid communication with one another. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method for cooling rectifier assemblies in a generator including a rotating rectifier hub having an inner surface, an outer surface, at least one dry mounting cavities formed therebetween, and a rectifier assembly mounted within each dry mounting cavity, said method of cooling the rectifier assembly, comprising:
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flowing a cooling medium through the rotating rectifier hub from the inner surface to the outer surface;
flowing the cooling medium directly across at least a portion of the outer surface of the rotating rectifier hub, thereby cooling the rectifier assembly; and
flowing the cooling medium through the hub from the outer surface back to the inner surface after flowing the cooling medium directly across the portion of the outer surface. - View Dependent Claims (26, 27)
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Specification