Control system for machine commutated inverter-synchronous motor drives
US4460861A · kind A · utility
25Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1983 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Jan 21, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/024
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An adjustable speed machine-commutated inverter-synchronous motor drive includes control of the inverter at a selected rate without positioning. The line converter is controlled so as to maintain a relation I=f(T) and the relation E/l=g(T) is established by applying to the field regulator loop a reference which is a function of T, where T is the torque, I the current drawn by the motor drive and E the excitation voltage. Accordingly, the torque is not sensed. The functions are chosen so that the commutation margin angle is safe under natural commutation by the EMF of the motor and also chosen to improve drive operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.