System and method for speed sensorless motor drives
US10218301B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2018 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jan 9, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor drive of an induction motor includes a motion controller to provide a reference signal and a memory to store a transformed model relating dynamics of a transformed state of the motor with measurements through parameters of transformed model including unknown parameters. The transformed state is a function of an electromagnetic state of the motor and parameters of transformed model. The dynamics of the transformed state is defined by a sum of components, each component is a linear function of the transformed state and at least one of the unknown parameters of the transformed model. The motor drive also include a motor controller to produce an estimate of speed and flux of the motor based on measurements and the transformed model, and to produce a reference voltage to track the reference signal based on the estimate of the speed and the flux of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.