The Application of Synchronous and Induction Motors to Chippers

Wood chippers require motors with special characteristics to operate under exacting conditions involving high peak loads, severe vibration, acceleration of high inertia, and exposure to dirt and moisture. Methods are given to select the most suitable size of chipper, to determine the proper rating and characteristics of a motor to drive it, to choose beetwen synchronous and induction motors, and to select the mechanical arrangement of the drive. The modifications in mechanical construction of the motors to enable them to withstand the severe operating conditions are described and illustrated. Desirable features to be included in the control are given.