Claims
- 1. A dynamoelectric machine comprising a central armature with a core centered on an axis, the core having a periphery and a plurality of generally axially oriented slots spaced angularly about its periphery, a field winding in the core slots, the field winding comprising a plurality of separate coils, the coils each being electrically connected in a closed ring circuit that encircles the core axis, a set of three conductor leads connected to the ring circuit of coils, each of the conductor leads being connected at a point in the ring circuit that is angularly spaced on the ring circuit about 120.degree. from the other of said leads, a housing shell surrounding the armature, bearing means for supporting the armature and the housing shell for relative rotation therewith, the housing shell and armature dynamoelectrically interacting when there is relative rotation between the housing shell and the armature and there is three phase electrical power in the winding, means connected for supplying three phase electrical power to said three conductor leads, including means to regulate the frequency of said three phase power in response to the rotational speed of said housing shell.
- 2. The machine of claim 1, wherein said means connected for supplying three phase electrical power includes electronic circuit means for converting DC into three phase AC.
- 3. A dynamoelectric machine comprising a central armature with a core centered on an axis, the core having a periphery and a plurality of generally axially oriented slots spaced angularly about its periphery, a field winding in the core slots, the field winding comprising a plurality of separate coils, the coils each being electrically connected in a closed ring circuit that encircles the core axis, a set of three conductor leads connected to the ring circuit of coils, each of the conductor leads being connected at a point in the ring circuit that is angularly spaced on the ring circuit about 120 electrical degrees from the other of said leads, a housing shell surrounding the armature, bearing means for supporting the armature and the housing shell for relative rotation therewith, the housing shell and armature dynamoelectrically interacting when there is relative rotation between the housing shell and the armature and there is three phase electrical power in the winding.
- 4. The machine of claim 3, including means to regulate the frequency of said three phase power in response to the rotational speed of said housing shell.
Parent Case Info
This is a continuation of application Ser. No. 08/275,619, filed Jul. 14, 1994, now abandoned, which is a continuation of application Ser. No. 07/980,304, filed Nov. 23, 1992 now U.S. Pat. No. 5,336,956.
US Referenced Citations (26)
Continuations (2)
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Number |
Date |
Country |
Parent |
275619 |
Jul 1994 |
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Parent |
980304 |
Nov 1992 |
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