Current sensing method and apparatus for a multi-phase brushless DC motor
US5142208A · kind A · utility
6Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jul 26, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for monitoring bi-directional currents in a multi-phase brushless DC motor. The current in each separate phase is separately monitored to generate a feedback signal that is used to dynamically adjust the instantaneous levels of the winding currents in accordance with a specified torque required of the motor. Both negative and positive currents in the motor windings are monitored at all times to provide precision control of the feedback signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.