AC Motors in the Recent Pulp & Paper Plants

Abstract

There are a large number of and a wide range capacity of AC motors and AC drives applied in pulp and paper industries. Constant speed motors are used for pumps, fans and blowers. However, recently adjustable speed drives can be applied for medium voltage motors.
This article describes the energy savings effect, introducing high efficiency motors and medium voltage inverters, for saving energy and operation cost reduction.
It is also important to check the insulation condition of medium voltage AC motors to maintain the motor characteristics. The latest technology of dielectric diagnosis for the motor insulation is also described.