Cross-start bus configuration for a variable speed constant frequency electric power system
US4967096A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Jan 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2221/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a bus configuration for a dual channel variable speed constant frequency motor/generator aircraft power system providing for both power generation and engine starting. The subject invention provides for isolation of faults which can occur in long power feeders. Further, the subject invention provides for a novel start mode of operation which allows one channel to provide power to the other channel, thereby avoiding inefficient multiple converter operation and potentially faulty power buses. The bus configuration provides for coupling a first motor/generator to a second motor/generator via a first converter to thereby allow th first motor/generator, operating as a generator, to supply variable frequency power to the first converter, the first converter supplying variable frequency power to the second motor/generator to operate the second motor/generator as a motor. A cross-start circuit is provided for selectively coupling the first channel to the second channel to allow power to be transferred between the first channel and the second channel is supplied to allow the novel start mode. The cross-start circuit completely decouples from the first and second ch…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.