It is well-known that the system performance for an indirect field-oriented control (IFOC) induction motor drive degrades under parameter variations and in the presence of external load torque. In this paper, a novel plug-in robust compensator for position control enhancement of an indirect field-oriented induction machine drive is developed. This plug-in compensator, designed using the H_∞ loop shaping techniques, can be plugged into the existing controller without affecting the already satisfactory nominal tracking performance of the existing closed loop system, but can improve the system performance under plant parameter variations and in the presence of external disturbances.