Variable speed pumping-up electrical power system
US4743827A · kind A · utility
17Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1987 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Apr 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed in a variable speed pumping-up electrical power system comprising a variable speed generator/motor, a frequency converter connected between the generator/motor and an a.c. power system, a controller controlling an effective power input to the generator/motor by controlling the frequency converter on the basis of the difference between an actual effective power input from the a.c. power system and an externally-applied effective power command, and a correction circuit correcting the effective power command on the basis of the difference between the frequency of the a.c. power system and a frequency setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.