Method and apparatus for controlling output current of turbine/alternator on common shaft
AssigneeElliott Energy Systems, Inc.
InventorsSuresh C. Gupta, Douglas R. Burnham, J. Michael Teets, Jon W. 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. During the power out mode, current data is sensed and is used for current limit and/or power balancing.
Claims17
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;
- and
- reconfiguring said inverter circuit to output electric power from said turbine/alternator when self-sustained operation of said turbine/alternator is achieved,
- wherein current data of the electric power is sensed by a sensor during outputting electric power from said turbine/alternator.
An electric system for a turbine/alternator comprising a gas driven turbine and permanent magnet alternator on a common shaft 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 a load;
- and
- a sensor for sensing output current of said turbine/alternator.
Dependencies are inferred from the claim text.