Rectifier-inverter converter circuit configured to asynchronously-valve cascade
Products - Catalog
Complete rectifier-inverter converter designed operation in the AC drive performed asynchronously by the scheme-valve cascade. Converter is used for speed control of asynchronous motor with slip-ring motors. Energy output slip of the electric grid.
Functions:
- "Soft" start the motor from zero to the desired speed of rotation
- Long-term work with established speed within the range of regulation
- Stabilization of preset speed
- Braking with given rate
- Using reversers in the stator circuit - reverse the direction of rotation
- Braking without reverse
- Tightening without stator switching
Application:
- Mine fans, conveyors, winders
- Crushers, mills
- Rotary furnaces, blowers, forced-draft setting cement plants
- Pumps water utility systems
- Winches, rotors, pumps rigs
- Conveyors great performance and great length
- Drive mechanisms closed-die forging presses, shearing, press brake machines, drawing machines, cable machines
- etc.
Benefits:
- The relative simplicity of implementation - undervoltage rotor circuits and high reliability
- High efficiency, slip energy recovery to the mains
- Reduce the required power converter and high voltage transformer
- Use of existing control systems utilizing rotary station as the backup equipment
Technical specification
| Parameter | Dimension | Value |
| Supply voltage of stator |
kV |
0,22, 0,38; 0,4; 0,415; 0,6; 0,66; 0,69; 6; 6,3; 6,6; 10; 11 |
| Rated current of stator |
A |
50, 100, 160, 200, 315, 400, 630, 1000 |
| Supply voltage frequency | Hz |
50±1, 60±1 |
| Line voltage rotor |
V |
230, 315, 380, 400, 600, 750, 825, 910, 1140, 1260 |
| Rated current of rotor |
A |
50, 100, 160, 200, 315, 500, 800, 1000, 1600, 2000, 2500 |
| Equivalent circuit: - rectifier - inverter |
6-pulse bridge 6-, 12-pulse bridge |
|
| Speed control range |
1:10 |
|
| Efficiency |
% |
95 |
| Permissible overcurrent |
% |
150% - 120 sec 175% - 60 sec |
| Protection | IP21 |