FIELD: electricity.
SUBSTANCE: offered device comprises series current sensor (1), vibration transducer (2), filter (3) with its output connected to a positive input of a first adder (5) with its negative input connected to a allowed current oscillation amplitude unit (4), an output of the first adder (5) is connected to an input of a first comparator (6) with its output connected to a pulse former (7) and a first pulse counter (8), also the output of the first comparator (6) is series connected to NOT component (9), an AND component (10), a second pulse former (11) and a second pulse counter (12). An output of the first pulse counter (8) and the second pulse counter (12) are connected respectively to negative and positive inputs of a second adder (13) with its third input connected to an output of an amplification coefficient unit (15), an output of the amplification coefficient unit (15) is also connected to a first input of a second comparator (14) with its second input connected to an output of the second adder (13), an output of the second comparator (14) is connected to a second input of the AND component (10).
EFFECT: power current oscillation suppression of an arc steel furnace due to loop amplification coefficient variations in a power current control loop.
2 dwg
Title | Year | Author | Number |
---|---|---|---|
DEVICE TO CONTROL ELECTRIC MODE OF ARC STEEL-SMELTING FURNACE | 2012 |
|
RU2507723C1 |
DEVICE FOR CONTROL OF ELECTRIC MODE OF ARC STEEL-SMELTING FURNACE | 2010 |
|
RU2436265C1 |
ARC CURRENT ADAPTIVE REGULATOR | 2013 |
|
RU2529871C1 |
DEVICE FOR CONTROL OF ELECTRIC MODE OF THREE-PHASE ARC STEELMAKING ELECTRIC FURNACE | 0 |
|
SU1492489A1 |
DEVICE FOR AUTOMATICALLY CONTROLLING POWER OF ARC FURNACE | 0 |
|
SU989757A1 |
DEVICE FOR MATCHED ROTATION OF ASYNCHRONOUS MOTORS WITH SQUIRREL-CAGE ROTORS | 2015 |
|
RU2601740C1 |
APPARATUS FOR WELDING | 0 |
|
SU1555078A1 |
DEVICE FOR COMPENSATING REACTIVE POWER | 0 |
|
SU1347118A1 |
DEVICE FOR ADAPTIVE CONTROLLING METAL-CUTTING MACHINE TOOL | 0 |
|
SU1667008A1 |
ARRANGEMENT FOR CONTROLLING THE ELECTRIC DUTY OF STEEL-MELTING ELECTRIC-ARC FURNACE | 0 |
|
SU1534277A2 |
Authors
Dates
2011-11-10—Published
2010-07-13—Filed