Methods and apparatuses for controlling torques of permanent magnet synchronous motors
US9419550B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Sep 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling torque of a permanent magnet synchronous motor (PMSM) by using a speed-torque lookup table may include: receiving a current direct-current (DC) link voltage of an inverter configured to drive the PMSM and a speed of a rotor of the PMSM; calculating a change ratio of a DC link voltage based on the current DC link voltage and a DC link voltage at a time when the speed-torque lookup table is generated; calculating a normalized speed of the rotor according to a change in the DC link voltage by using the speed of the rotor and the change ratio of the DC link voltage; and/or transferring the normalized speed of the rotor as an input to the speed-torque lookup table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.