Gas turbine generator
Patent 6888263 Issued on May 3, 2005. Estimated Expiration Date: 
May 23, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 23, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSystem and method for dual mode control of a turbogenerator/motor Turbogenerator power control system Electrical system for turbine/alternator on common shaft Patent #: 6605928 Inventors
AssigneeApplicationNo. 10477750 filed on 05/23/2002US Classes:290/52, TURBOGENERATORS290/47, ELECTRIC-STARTING MOTOR WITH GENERATOR290/46, STARTING AND GENERATING DYNAMO290/41, Ignition322/10, WITH PHYSICAL STARTING AND/OR STOPPING OF THE GENERATOR322/11, Automatic in response to predetermined conditions322/29, Speed or frequency of generator322/32Frequency responsive devices or networksExaminersPrimary: Ponomarenko, NicholasAssistant: Mohandesi, Iraj A. Attorney, Agent or FirmForeign Patent References
International ClassH02P009/00AbstractA gas turbine generating apparatus according to the present invention comprises a gas turbine capable of a high-speed operation, a permanent-magnet-type generator driven at a high speed by the gas turbine, an inverter device (5) for converting alternating-current power generated by the generator into commercial alternating-current power, and a system-interconnection device (9) for interconnecting output of the inverter device to a commercial AC power supply system (10). The system-interconnection device controls the inverter device based on voltage of the commercial AC power supply system as a criterion such that output current of the inverter device is in phase with the voltage or out of phase with the voltage by a constant phase difference. A control device (18) is provided for operating the permanent-magnet-type generator (4) as a motor at a time of starting the gas turbine, and supplying alternating-current power from a direct-current power supply through the inverter device or another inverter device in addition to the inverter device to the generator for increasing a rotational speed smoothly from zero. The control device detects output current of the inverter device and controls the inverter device to keep the output current constant. | |
