System and method of paralleling engine-generators on a common bus
US8866344B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system parallels engine-generators on a common bus and includes circuit breakers and automatic voltage regulators. Each engine-generator includes an output having an alternating current voltage. Each breaker is between the output of a corresponding engine-generator and the bus. Each regulator includes a first mode controlling field excitation for a corresponding engine-generator and a second mode automatically controlling the AC voltage. A processor for the regulators starts the engine-generators, closes the breakers, causes the regulators to increase the field excitation for the corresponding engine-generator in the first mode as long as less than a predetermined current flows through a corresponding breaker until the field excitation is equal to a rated voltage, and responsively causes the regulators to automatically control the AC voltage of the output of the corresponding engine-generator in the second mode, and, otherwise, decreases the field excitation of the corresponding engine-generator in the first mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.