Electrical system for turbine/alternator on common shaft

Details Electrical system for turbine/alternator on common shaft Electrical system for turbine/alternator on common shaft

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.

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