ABSTRACT
The induction machine has several advantages: size, weight, rotor inertia, maximum speed capability, efficiency, and cost. However, induction machines are difficult to control because being polyphase electromagnetic systems they have a nonlinear and highly interactive multivariable control structure. The technique of field-oriented or vector control permits an algebraic transformation that converts the dynamic structure of the AC machine into that of a separately excited decoupled control structure with independent control of flux and torque.
