Self generative variable speed induction motor drive
US4400655A · kind A · utility
44Cited by
9References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | May 11, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter controls an induction motor in response to signals from a power factor control circuit. The power factor control circuit receives signals related to motor terminal voltages and multiplexes them to a comparator. The inverter and multiplexor are sequenced each time the comparator input reaches a reference level. The frequency of the inverter is thus self generated. The power factor of the system can be controlled to implement a variety of control strategies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.