Method and apparatus for controlling motor torque
US8519662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Nov 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The subject matter disclosed herein describes a system for controlling torque in a soft starter. In particular, torque ripple is reduced when transitioning between two different operating modes of a soft starter. A soft starter may include a first operating mode, designed for improved performance during low-speed operation of a motor, and a second operating mode, designed for improved performance during high-speed operation of the motor. However, transitioning between two different operating modes may result in significant transient currents in the motor, which, in turn, produce torque in the motor. The system described herein reduces this transient torque production in the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.