Method for regulating the excitation current in a motor vehicle alternator by digital processing, and a regulating device for carrying out the method
US5982155A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/92
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The method of regulation includes: PA1 starting to measure the rectified voltage at the output of the alternator during each period T of this voltage, PA1 performing this measurement by sampling over a predetermined period T.sub.e, PA1 comparing this measured value of the rectified voltage with a calculated reference value, and PA1 deducing from this comparison the duration of the first phase T.sub.1 for the next following period T, this first phase being the one in which the battery voltage of the vehicle is applied to the alternator rotor winding. The sampling measurement of period T.sub.e ends, in each period T, at an instant T-.epsilon., where .epsilon. is a period of time which is very short by comparison with the length of the period T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.