Systems and methods for improved motor drive power factor control
US7495410B2 · kind B2 · utility
69Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Aug 23, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods are described for controlling power factor in motor drives having a switching rectifier providing a DC link current to an inverter in which the rectifier gain is increased to provide additional DC link current to correct the drive power factor based on current drawn by capacitors of the AC drive power input, and the inverter gain is decreased by introducing bypass states in the inverter switching control scheme or by reducing the motor flux to accommodate the increased DC link current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.