Modeling and Simulation of a Large Chipper Drive

This paper presents a simulation model for a large chipper drive used in a paper mill. If the chipper drive is a slip ring induction motor, several advantages arise from using a rheostat in the rotor circuit. This paper will investigate the impact of a rotor circuit rheostat with respect to starting behavior and heavy duty load impulses. The chipper drive is modeled in Modelica, an object oriented multi domain simulation language. In addition to the theory, a practical case is presented to demonstrate the applicability of the derived knowledge.