FIELD: electrical engineering.
SUBSTANCE: electric drive comprises asynchronous motor (1), thyristor voltage converter (2), control unit (5), unit (4) of rotation frequency controller, unit (3) of rotation frequency setting and metre (8) of motor rotation frequency, arranged on the basis of stator EMF sensor with current and voltage sensors (6), (7) of motor accordingly, division unit (9) and functional converter (10).
EFFECT: simplified realisation of automatic motor speed control system in asynchronous electric drives with thyristor control without rotation frequency sensor on shaft with preservation of control accuracy.
3 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| AC ELECTRIC DRIVE | 2007 |
|
RU2389127C2 |
| AC DRIVE | 2003 |
|
RU2251204C1 |
| DEVICE FOR SMOOTH START OF INDUCTION MOTOR | 2007 |
|
RU2369002C2 |
| ALTERNATING CURRENT ELECTRIC DRIVE | 2014 |
|
RU2576330C1 |
| A C ELECTRIC DRIVE | 0 |
|
SU1758821A1 |
| FREQUENCY-CONTROLLABLE ELECTRIC DRIVE | 0 |
|
SU826543A1 |
| FREQUENCY-CONTROLLED AC ELECTRIC DRIVE | 0 |
|
SU892635A1 |
| METHOD OF CONTROL AND PROVISION OF SURVIVABILITY OF THREE PHASE INDUCTION MOTOR | 2007 |
|
RU2326480C1 |
| INDUCTION MOTOR CONTROL DEVICE | 0 |
|
SU888316A1 |
| ADJUSTABLE-FREQUENCY ASYNCHRONOUS ELECTRIC DRIVE | 0 |
|
SU1119155A1 |
