Variable frequency operation of induction motors
Abstract
Supplying the induction motor at variable frequency not only gets round most of the problems inherent in the motor, but also, and most importantly, it converts the motor into an outstandingly successful variable speed drive. The steady-state behaviour is dealt with in this chapter, including current-source and voltage-source inverters; constant torque and constant power regions; four-quadrant operation; effects of the inverter on the motor and vice versa; and the effect of the inverter on the utility supply. A grasp of this chapter is advisable before moving to Chapter 8.
Keywords
Induction motor; Variable frequency operation; Inverter; PWM; Voltage source; Current source; Closed-loop; ...
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