Commutatorless direct current motor drive system
US4262236A · kind A · utility
15Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1979 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Apr 11, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/21
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A commutatorless direct current motor drive system that initiates rotation of a permanent magnet rotor from standstill upon the application of supply potential and then sustains rotor rotation by sequentially energizing the polyphase stator phase windings in response to the alternating current potential waveforms induced in the stator phase windings by the magnetic field of the permanent magnet rotor upon rotor rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.