Self generative PWM voltage source inverter induction motor drive
US4469997A · kind A · utility
27Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Oct 6, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A PWM, controlled current, voltage source 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 multiplexer 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.