Design considerations and performance of AC drives on large paper machine

Abstract

A corrugated-board paper machine designed to produce 230000 metric tons of corrugated stock entirely from recycled paper is described. The machine is 319" wide, is designed for operation at 3000 ft/min and is driven by 43 TEFC induction motors powered by variable frequency sectional drives rated from 30 to 1125 kVA. The total installed power for the paper machine drives is 7200 kW/9650 hp. It is shown that the drive system design is unique in that TEFC induction motors are utilized without auxiliary blowers and each drive is complete with a DC link power converter and a variable frequency inverter. The machine is driven by fully digital, microprocessor-controlled variable frequency drives. The design considerations for the motors, converters, and power system are discussed.<>