New Rotor Design Concept Solves Pipeline Motor Acceleration Problem

The practical application of a portion of a theory of ``multisegmental rotor bar analysis'' as recently published by Diamant [1] is described. A special rotor bar-slot configuration was developed and patented to improve the accelerating torque of several large high-speed motors. Manufacturing considerations associated with this shape are described in detail. Because of several limitations inherent in existing test facilities, special test equipment and methods were then devised to confirm the degree of improvement; these have since been successfully applied to other machines as well.