Position sensorless control algorithm for AC machine
US6924617B2 · kind B2 · utility
36Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jun 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2207/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for an electric motor having a stator and rotor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a low speed control block to estimate the rotor angular position using stator current components operating in the controller, a high speed control block to estimate the rotor angular position using stator current components and stator flux position operating in the controller, a transition switch in the controller to vary operation between the low speed control block and the high speed control block, and where the inverter is controlled by six step operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.