Control system for variable speed hydraulic turbine generator apparatus
US4694189A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 24, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 24, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for variable speed hydraulic turbine generator apparatus comprises an induction generator connected at its primary side to an AC power line system, a secondary excitation controller connected to the secondary side of the induction generator and being responsive to a generator output command signal supplied externally to supply to the induction generator an excitation current which causes the induction generator to generate AC power at the same frequency as that on the AC power line system, a hydraulic turbine for rotating the induction generator, a guide valve for regulating the amount of water supplied to the hydraulic turbine, a rotation speed detector for detecting a rotation speed of the induction generator, a rotation speed command calculator for receiving a hydraulic turbine running condition signal inclusive of the external generator output command signal and calculating an optimum rotation speed command, a rotation speed controller for comparing the optimum rotation speed command with a rotation speed signal from the rotation speed detector and producing a guide valve opening control signal in accordance with a difference between the optimum rotation speed …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.