Methods and apparatus for synchronizing multiple motor driven generators
US4575671A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Feb 14, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are disclosed for synchronizing multiple AC motor driven synchronous generators to the voltage on a common output bus. In one method, the rotating motor is disconnected from its AC power source, the generator voltage is phase synchronized to the output bus voltage, and then the generator rotor is caused to slip one generator pole at a time until the motor generated voltage is phase synchronized to the AC power source voltage. At that point, the motor is reconnected to the AC power source. Other methods are disclosed in which magnetic position sensors are employed to provide an indication of when the rotors on multiple motor driven generators are mechanically phase synchronized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.