Non-linear voltage regulator, particularly for an automotive alternator
US6078203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage regulator of the type comprising a linear filter, a comparator, and a stretcher filter which are connected in cascade with one another between an input terminal and an output terminal of the regulator. The input terminal receives an error signal as converted by the comparator into a square-wave error signal, and the output terminal deliveres a square-wave output control signal which has a stretched duty cycle over the square-wave error signal by a time delay introduced from the stretcher filter. The regulator further comprises a non-linear filtering section for the error signal which is connected between the input terminal of the regulator and the linear filter and has linear gain with the error signal below a first value, gain approximately of unity with the error signal between the first value and a second value, and zero gain with the error signal above the second value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.