ABSTRACT

Vector control is the foundation of modern high-performance drives. It is also known as decoupling, orthogonal, or transvector control. Vector control techniques can be classied according to their method of nding the instantaneous position of the machine ux, which can be either (1) the indirect or feedforward method or (2) the direct or feedback method. This chapter will discuss eld orientation-the calculation of stator current components for decoupling of torque and ux-while laying out the principles for rotor ux-and stator ux-oriented control approaches for induction generator systems. A discussion of parameter sensitivity, detuning, sensorless systems, PWM generation, and signal processing issues can be found in the available technical literature.