Inverter device
US7202618B2 · kind B2 · utility
8Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Dec 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The control device records, in advance, a current data table which specifies relationships between currents in respective phases in a three-phase motor and rotation angles of a rotor of the three-phase motor, obtains, from the current data table, a rotation angle of the rotor of the three-phase motor corresponding to a current in each phase in the three-phase motor detected by a current sensor before driving of the three-phase motor, and obtains an initial position of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.