Method and apparatus for the prevention of critical process variable excursions in one or more turbomachines
US7096669B2 · kind B2 · utility
5Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Sep 20, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D27/0207
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Many variables in processes such as those using turbocompressors and turbines must be limited or constrained. Limit control loops are provided for the purpose of limiting these variables. By using a combination of closed loop and open loop limit control schemes, excursions into unfavorable operation can be more effectively avoided. Transition between open loop and closed loop may be enhanced by testing the direction and magnitude of the rate at which the limit variable is changing. If the rate of change indicates recovery is imminent, control is passed back to the closed loop limit control function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.