Voltage regulator for a generator drivable by an internal combustion engine
US6429627B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Dec 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage regulator for a generator drivable by an internal combustion engine is proposed, in which the triggering of the end stage transistor for varying the exciter current is done with the aid of a pulse width modulator. The digital pulse width modulator employed is a component of a closed-loop control circuit for the exciter current, which uses the generator voltage as the actual value and regulates the pulse width ratio duty factor as a function of the generator voltage detected, and in addition a system damping is performed, in that one entire period of the duty factor can be turned off in overriding fashion. This overridingly turned-off period can be adapted in its duration to the duty factor, thus resulting in a voltage change that is independent of the duty factor. The maximum current rise rate can thus be limited by limiting the maximum rate of change of the pulse width modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.