DC Drives

Additional Details

We offer an exclusive series of DC Drive. Which are meant for shunt wound motors with separate field excitation. Both the armature and the field are controlled. The incoming AC three phase is converted through a line commutated thyristor bridge circuit to the required DC voltage. Both single quadrant and four quadrant versions are available. It is excellent and stable control is possible with DC motors and their range is large. 
Applications are in a number of areas such as wire drawing, rolling mills, strip processing mills, paper mills, extrusion systems, centrifuges etc. 
Their use is coming down particularly in the lower ratings as they are being replaced with AC drives that are less expensive and use standard AC motors. The poor power factor of operation and the harmonics generated is also the reason for the switchover of many to ac drive systems.