Rotary electrical machine
US4305031A · kind A · utility
50Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | May 13, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary, permanent magnet, electrical generator has a stator in which a voltage is induced by a rotor having permanent magnet pole pieces arranged in two rows. An actuator can cause relative rotation of the rows of pole pieces to maintain a substantially constant output voltage from the stator. The actuator is responsive to a servo pressure signal from a valve which is, in turn, responsive to rotor speed. The stator may include a saturating winding for maintaining the output voltage substantially constant under varying external loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.