Prime-mover dynamo plants – Turbogenerators
Reexamination Certificate
2006-01-24
2006-01-24
Ponomarenko, Nicholas (Department: 2834)
Prime-mover dynamo plants
Turbogenerators
C290S04000F, C322S010000, C322S014000, C060S039190
Reexamination Certificate
active
06989610
ABSTRACT:
An electrical system for a turbine/alternator comprising a gas driven turbine and a permanent magnet alternator rotating on a common shaft includes an inverter circuit connectable either to an AC output circuit or the stator winding of the alternator. A control circuit during a startup mode switches the inverter circuit to the stator winding of the alternator and during a power out mode switches the inverter circuit to the AC output circuit. Thus, during the startup mode, the alternator functions as a motor to raise the speed of the turbine to a safe ignition speed and in the power out mode the electrical system outputs the AC output circuit, electrical power having a frequency unrelated to the rotation speed of the alternator.
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Yasuo Fujikawa, “Transportable Micro Gas Turbine Generator”,. Shinko Electric Journal, No. 143, vol. 41 Sep. 20, 1996.
Burnham Douglas R.
Gupta Suresh C.
Teets J. Michael
Teets Jon W.
Elliott Energy Systems, Inc.
Ponomarenko Nicholas
The Webb Law Firm
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