Considerations for the use of AC induction motors on variable frequency controllers in high performance applications

Until recently the majority of AC variable speed drives have been applied to variable torque, pump and fan applications. Advances in drive technology have led to the use of induction motors in high performance applications that exceed the capability of motors designed for operation on sine-wave power. These applications, which have traditionally been served by DC systems, have created the need for definite purpose AC induction motors designed specifically for operation on adjustable frequency controllers. A discussion is presented of the considerations for a successful application and the limitations of standard motor designs are highlighted