ABSTRACT
Induction motors (IMs) are widely applied in many di¦erent types of industrial electric vehicles and domestic drives owing to their well-known advantages like simple construction (squirrel cage rotor), operation reliability, ruggedness, and low cost. Furthermore, in contrast to the DC brush motor with mechanical commutation, these can be used in aggressive or volatile environments, since there are no problems with spark and corrosion. žese advantages, however, are superseded by control problems when using an IM in adjustable speed drives (ASDs). žis is because an IM as a plant of feedback control system has a coupled and nonlinear structure. žere are di¦erent methods to control IM torque and speed, varying in performance, complexity, and costs.
