Device and method for detecting rotor speed of a multiple phase motor with bipolar drive
US7288956B2 · kind B2 · utility
8Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2004 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Apr 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/182
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for detecting rotation of a rotor of a multiple phase motor with bipolar drive is described, excluding a three-phase motor with bipolar drive with star connected coils or motor stator windings. The motor has at least a first and a second energizable motor stator winding. A voltage is sequentially and alternately sensed on the first and the second motor stator winding at or near the end of a period of a non-energised state thereof. An apparatus for detecting rotor speed is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.