Alternating current power generating system
US4087698A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1977 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Apr 22, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2101/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for generating alternating current of selected voltage at a target frequency includes a plurality of A.C. generators, at least one of which has a rotatably mounted stator. A prime mover drives a power input shaft at speeds extending through a wide range and the shaft is connected to the first rotor. As speed increases, the generator reaches the desired frequency and a sensing device releases the stator to rotate and maintain a relative speed between itself and the rotor corresponding to the target frequency. The stator drives the second rotor at its own absolute speed which is the difference between the power input shaft speed and the relative speed between the first stator and rotor. A field control maintains the desired voltage and a load control transmits the current output to a load and varies the load to maintain the generator at proper operating condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.