Rolling mill DC motors are best at low speed, high torque applications, while AC motors typically need to run above 800rpm to be cost effective.
Which motor is generally used in Third Mills paper and cement industries?
Three-phase synchronous motor.
Which type of converter is used in rolling mills?
DC drives and cycloconverters have been used in rolling mill applications for many years. The appearance of the IEGT (Injection Enhanced insulated Gate bipolar Transistor) or IGCT/GCT made the large PWM drive system practical.
Which motor is used in tramway?
Dc motor (Ma) and induction motor (Mc) are currently manufactured and used in 105 N tram drive, their parameters are available. Dc motor (Mb), brushless motor (Me) and slip-ring motor (Md) pa- rameters have been determined by analysis.
How does a steel rolling mill work?
In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. Most steel mills have rolling mill divisions that convert the semi-finished casting products into finished products. …
What will happen in induction motor if we increase the air gap flux?
The permeability of the magnetic circuit will decrease if the air gap of the motor is increased. The magnetizing inductance of the motor decreases. The air gap will have a decrease in magnetic flux. …