Amplitude detection method and apparatus for high frequency impedance tracking sensorless algorithm
US6763622B2 · kind B2 · utility
26Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jan 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for an electric motor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a first motor speed control block in the controller injecting a high frequency signal into the electric motor to determine the speed and position of the electric motor, where the first motor speed control block includes a tuned moving average filter to determine the magnitude of high frequency current in the electric motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.