Method and apparatus for control of inverter synchronous machine drive system
US4255695A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Sep 25, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/024
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an inverter-synchronous machine drive system subject to operator control, feedback control is employed to synchronize machine-inverter operation. A phase angle command signal, responsive to a fixed value phase angle signal during initial machine excitation and alternately responsive to machine load variation as controlled by an operator command, is generated and compared against the actual machine phase angle difference between machine phase current and air gap flux. A frequency command signal, responsive to the angle difference therebetween, is impressed on the inverter to vary machine excitation responsive to the magnitude of the phase angle difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.