RO115315B1 - Starter and automatic speed control system for phase-wound rotor asynchronous motor - Google Patents
Starter and automatic speed control system for phase-wound rotor asynchronous motorInfo
- Publication number
- RO115315B1 RO115315B1 RO98-00390A RO9800390A RO115315B1 RO 115315 B1 RO115315 B1 RO 115315B1 RO 9800390 A RO9800390 A RO 9800390A RO 115315 B1 RO115315 B1 RO 115315B1
- Authority
- RO
- Romania
- Prior art keywords
- phase
- asynchronous motor
- control
- speed control
- starter
- Prior art date
Links
Abstract
The invention relates to a starter and automatic speed control system for phase wound rotor asynchronous motors, comprising an electric power equipment consisting in a symmetrical three-plase bridge rectifier (3), connected to the rotor phases of an asynchronous motor (1) through coils (2), a stabilized D.C.voltage intermediary circuit connected to the three-phase bridge reversible rectifier (7), the system also comprising an automatic control equipment consisting of a voltage regulator (14), amplifiers (15, 16, 17) which supply imposed values (i*, i*, i*) comparable with the measured values (i R, i S, i T ) of the rotor currents, signals being obtained at the output of the hysteresis comparators (18, 19, 20), said signals synthetized in a control grid device (21) will control the static switches of the bridge rectifier (3), the asynchronous motor (1) speed control (n) being performed by comparison with an imposed value (n *), in a speed regulator (22), by limiting the continuous current in the intermediary circuit to an imposed value ( i C *), by means of a current regulator (23) which actuates a control grid device (24) for controlling the thyristors of the three-phase bridge reversible rectifier (7) which is connected to the network phases through an adapter transformer (8) which permits the recovery of the slide energy into the network.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO98-00390A RO115315B1 (en) | 1998-02-25 | 1998-02-25 | Starter and automatic speed control system for phase-wound rotor asynchronous motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO98-00390A RO115315B1 (en) | 1998-02-25 | 1998-02-25 | Starter and automatic speed control system for phase-wound rotor asynchronous motor |
Publications (1)
Publication Number | Publication Date |
---|---|
RO115315B1 true RO115315B1 (en) | 1999-12-30 |
Family
ID=64357366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO98-00390A RO115315B1 (en) | 1998-02-25 | 1998-02-25 | Starter and automatic speed control system for phase-wound rotor asynchronous motor |
Country Status (1)
Country | Link |
---|---|
RO (1) | RO115315B1 (en) |
-
1998
- 1998-02-25 RO RO98-00390A patent/RO115315B1/en unknown
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