A recommended new standard electrical supply and control configuration for dual-kiln drives

Detrimental electromechanical system interaction that can occur with the standard configuration that connects the armature circuits in series with a single regulated supply and a single tachometer for speed feedback is discussed. Three basic types of disturbance mechanism are studied. An alternative configuration with dual supplies and control systems and which provides highly beneficial electromechanical system interactions is described. These interactions prevent costly gear maintenance problems resulting from vibrations at the two lower-order torsional resonances