Method and apparatus for controlling output voltages and...

Prime-mover dynamo plants – Turbogenerators

Reexamination Certificate

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C322S007000, C322S014000

Reexamination Certificate

active

06956301

ABSTRACT:
An electrical system and method 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 output circuit or the stator winding of the alternator. A control circuit during a start-up mode switches the inverter circuit to the stator winding of the alternator and during a power out mode switches the inverter circuit to the output circuit and power line. During the power output mode the power line is monitored and the output voltage, frequency and/or phase is matched or synchronized to the power line.

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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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