Method for estimating mechanical parameters of an electrical motor
US11404982B2 · kind B2 · utility
0Cited by
0References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Feb 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2207/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling an electrical motor taking in account slip frequency. The method including determining amplitude, phase and frequency of the stator voltage from voltage measurements, determining estimates for current components from current measurement and stator voltage phase, determining estimate for torque from voltage amplitude, frequency, current amplitude and motor data, determining estimate for speed from torque, frequency and motor data, and determining over-estimation of speed from speed estimate, torque estimate and slip frequency. The over-estimation may be used to improve functional safety of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.