Voltage/current controlled voltage regulator to eliminate exciter field saturation
US5550456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1994 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Jul 27, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2101/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control scheme for a wound rotor synchronous generator whereby feedback signals corresponding to the exciter field current and the generator output voltage potential combine together to control the generator output voltage in such a way that at lower generator speeds and lower load requirements, exciter field current saturation is eliminated by reducing generator output voltage. The generator control scheme includes a circuit for sensing exciter field current in logic cooperation with a circuit for sensing generator voltage. Both sensing circuits regulate the current applied to the exciter field which corresponds to the rectified current applied to the field windings of the power generator. During steady state operations the generator output voltage is regulated using the generator output voltage as a feedback signal. At lower speeds and reduced loads and as the exciter field current approaches the saturation point, the generator output voltage is regulated using the exciter field current as a feedback signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.