Sensorless induction motor system and control method thereof
US12095399B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 2022 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | May 30, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sensorless induction motor system and a control method thereof includes a motor including a stator including windings forming a plurality of phases and a rotor including a permanent magnet, and a controller configured to control operation of the motor by controlling a voltage applied to each phase of the stator, to set a stop waiting time predicted to be necessary for the rotor to stop when the motor is controlled to stop, to apply a pulse voltage to each phase of the stator a plurality of times after the stop waiting time, and to conclude that the rotor has stopped when a minimum deviation value of an induced current is equal to or greater than a reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.