Abstract
Induction motors (IMs) are widely used in many industrial ap- plications due to their robustness, low cost, simplicity and relative good ef- ciency. One of the major considerations for IMs is their speed control. PI (proportional-integrator) controllers are usually used as speed controller. Ad- justing the gain of PI controller is time-consuming which needs thorough con- siderations. Hence, fuzzy controllers are proposed to overcome such problems. In this paper, rstly drive of a three-phase induction motor is designed based on PI controller and then fuzzy logic controller is implemented. This paper presents a novel speed control technique based on fuzzy logic with two inputs and one output for drive of an IM. The inputs are speed error and derivation of speed error and the output is speed. Finally comparison is done between the PI and fuzzy controllers which shows superiority of the fuzzy controller over PI controller.
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