Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2004-03-17
2009-08-25
Le, Dang D (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S166000
Reexamination Certificate
active
07579734
ABSTRACT:
A TPSRM may include a stator, having a plurality of poles and a ferromagnetic or iron back material, and a rotor having a plurality of poles and a ferromagnetic or iron back material. A current flowing through coils wound around a first set of the plurality of stator poles induces a flux flow through the first set of stator poles and portions of the stator back material during a first excitation phase. A current flowing through coils wound around a second set of the plurality of stator poles induces a flux flow through the second set of stator poles and portions of the stator back material during a second excitation phase. The numbers of stator and rotor poles for this TPSRM are selected such that substantially no flux reversal occurs in any part of the stator back material as a result of transitioning between the first and second excitation phases.
REFERENCES:
patent: 3956678 (1976-05-01), Byrne et al.
patent: 5146127 (1992-09-01), Smith
patent: 6051903 (2000-04-01), Pengov
patent: 6194805 (2001-02-01), Heese et al.
patent: 7015615 (2006-03-01), Ramu et al.
PCT International Search Report dated Mar. 21, 2005.
Lobo Savio Nimal
Ramu Krishnan
Dickinson Wright PLLC
Le Dang D
Panaphase Technologies, LLC
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