Redundant field drive for an electric machine
US6750636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric power generating system comprising: a generator including an alternator and regulator, the regulator including a normal field control and a redundant field control with a default field command and a selector for selecting between the normal field control and the redundant field control. Further disclosed, is a method of providing excitation to an alternator, comprising: receiving a field default signal indicative of an inoperative normal field control and a normal field command responsive to the normal field control, indicative of a desired duty cycle command to a field coil of an alternator. The method further includes determining if a supply voltage is greater than a selected value and formulating a default field command; transmitting a field drive responsive to the default field command to a field coil of the alternator if the field default signal is asserted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.