Title :
Medium-voltage adjustable-speed-drive retrofit of an existing eddy-current clutch extruder application
Author :
Hanna, Robert A. ; Randall, Scott W.
Author_Institution :
RPM Eng. Ltd., Mississauga, Ont., Canada
Abstract :
This paper describes a case study of replacing an eddy-current clutch with a modern medium-voltage adjustable-speed drive (ASD) for a 2250 hp extruder application. It covers key issues, justification, factory and field measurements of torque-speed profile from 0.5 to 60 Hz, as well power quality analysis. The paper reviews manufacturers´ capability to build medium-voltage ASDs that produce very high and stable torque at very low speed.
Keywords :
AC motor drives; PWM invertors; extrusion; power supply quality; torque measurement; variable speed drives; velocity measurement; 0.5 to 60 Hz; 2250 hp; 3-level NPC VSI-PWM drives; CSI-PWM drives; VSI-PWM drives; eddy-current clutch extruder; factory acceptance testing; field measurements; medium-voltage adjustable-speed-drive retrofit; power quality analysis; torque-speed profile measurements; Chemical industry; Induction motors; Medium voltage; Petroleum; Power measurement; Power quality; Production facilities; Shafts; Torque measurement; Variable speed drives;
Journal_Title :
Industry Applications, IEEE Transactions on
