Method and apparatus for controlling output voltages and frequencies of turbine/alternator on common shaft
AssigneeElliott Energy Systems, Inc.
InventorsSuresh Gupta, Douglas Burnham, J. Teets, Jon Teets
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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.
Claims15
A method of controlling a turbine/alternator comprising a gas driven turbine and permanent magnet alternator on a common shaft comprising:
- providing electric power to said turbine/alternator through an inverter circuit to start said turbine/alternator to achieve self-sustained operation of said turbine/alternator;
- reconfiguring said inverter circuit to output electric power from said turbine/alternator when self-sustained operation of said turbine/alternator is achieved;
- and
- supplying the electric power to a power line while monitoring said power line.
An electric system for a turbine/alternator comprising a gas driven turbine and permanent magnet alternator on a common shaft, said permanent magnet alternator being connectable to a power line, comprising:
- an inverter provided for operation of said turbine/alternator;
- means to provide electric power to said turbine/alternator through said inverter to start said turbine/alternator to achieve self-sustained operation of said turbine/alternator;
- means to reconfigure said inverter to output electric power from said permanent magnet turbine/alternator to supply the electric power to said power line;
- and
- a monitor circuit to monitor said power line.
Dependencies are inferred from the claim text.