Supercharged gas turbine with improved control
US6880343B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Jun 22, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas-turbine supercharging system with improved control. A gas-turbine supercharger that preferably comprises a variable-pitch axial flow fan and a logger supplies, cooled, pressurized air to a gas-turbine power plant. The gas-power plant is preferably a part of combined-cycle power plant that comprises a steam cycle and a duct burner. A controller modulates the output of the fogger and the supercharging fan to maximize the total plant output and provide optimum efficiency without exceeding plant operating limits. The fogger and fan are preferably selected to maximize the allowable output from gas turbine at summer peaking conditions. For the case of a combined-cycle power plant, the preferred mode of operation is to reduce fog output while maintaining a maximum fan pressure as ambient temperature drops below the maximum design value. For a simple-cycle gas turbine, the preferred mode of operation is to reduce pressure output of the supercharging fan while adjusting fog output to match the maximum allowable moisture content at the gas-turbine inlet. The control also reduces fog output at low ambient temperatures to prevent possible ice formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.