Offset PWM signals for multiphase motor
US7193388B1 · kind B1 · utility
39Cited by
23References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2006 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Feb 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2205/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi phase motor includes a switching array for interconnecting a power source to each phase. A current sensor senses current supplied from the power source via the switching array to the winding and a controller generates offset PWM signals for controlling the switching array to supply power to each of the phases of the winding. The offset timing allows the individual phase currents to be determined from a single current sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.