Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-05-10
2005-05-10
Le, Dang (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S266000, C310S268000
Reexamination Certificate
active
06891301
ABSTRACT:
An electric machine (40, 40′) has a stator (43) and a rotor (46) and a primary air gap (48) has secondary coils (47c, 47d) separated from the rotor (46) by a secondary air gap (49) so as to induce a slip current in the secondary coils (47c, 47d). The rotor (46, 76) has magnetic brushes (A, B, C, D) or wires (80) which couple flux in through the rotor (46) to the secondary coils (47c, 47d) without inducing a current in the rotor (46) and without coupling a stator rotational energy component to the secondary coils (47c, 47d). The machine can be operated as a motor or a generator in multi-phase or single-phase embodiments. A method of providing a slip energy controller is also disclosed.
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Perahia, J., “Discussions of Hybrid-Secondary-Uncluttered Induction (HSU-I) Machine”, IEEE Transactions On Energy Conversion, vol. 17, No. 1, Mar. 2002, pp. 150-151.
Hsu, John S., “Hybrid-Secondary Uncluttered Induction (HSU-I) Machine”, IEEE Transactions On Energy Conversion, vol. 16, No. 2, Jun. 2001, pp. 192-197.
Le Dang
Quarles & Brady LLP
UT-Battelle LLC
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