Method and apparatus for stability control of open loop motor drive operation
US9054611B2 · kind B2 · utility
5Cited by
17References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2013 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Sep 5, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Motor drives and control methods are presented for sensorless motor speed control in which inverter output currents are sampled from the inverter output, and a frequency modulation value is determined based on the current feedback and either one or more voltage commands or one or more voltage feedback signals. A speed or frequency setpoint is adjusted at least partially according to the frequency modulation value to provide an adjusted frequency or speed setpoint value that is then used in controlling the inverter to provide stability control to mitigate hunting or motor stoppage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.