Abstract
Rotor flux and torque of an induction motor (IM) are decoupled to obtain performance of DC motor. The decoupling strategy has been developed in terms of stator current components where the core loss is neglected. Many different controllers including fuzzy logic controller (FLC) with neglecting core loss have been designed to control the speed of induction motor. The outcome of investigation about the effect of core loss on indirect field oriented control (IFOC) has been concluded that the actual flux and torque are not reached to the reference flux and torque if core loss is neglected. Thus, the purpose of this paper is to propose a fuzzy logic speed controller of induction motor where flux and torque decoupling strategy is decoupled in terms of magnetizing current instead of stator current to alleviate the effects of core loss. The performances of proposed fuzzy-logic-based controller have been verified by computer simulation. The simulation of speed control of IM using PI and FLC are performed. The simulation study for high-performance control of IM drive shows the superiority of the proposed fuzzy logic controller over the conventional PI controller.
Highlights
Induction motors have been considered for many industrial applications since its discovery [1,2,3] because of its low maintenance, robustness, low cost, high efficiency, good self starting, simplicity of design, absence of the collector brooms system and small inertia
In order to improve the performance of an induction motor speed controller with consideration of core loss, a fuzzy-logic controller for indirect field oriented induction motor drive taking core loss into account is proposed
2. 0 (b) consideration of core loss, the fuzzy logic controller (FLC) is designed to regulate the speed in term of magnetizing q-axis current component
Summary
Induction motors have been considered for many industrial applications since its discovery [1,2,3] because of its low maintenance, robustness, low cost, high efficiency, good self starting, simplicity of design, absence of the collector brooms system and small inertia. Since Blashke [6] and Hasse [8] have developed the new technique known as vector control or field oriented control (FOC), the use of the induction machine becomes more and more frequent because FOC provides better performance for steady state as well as transient conditions. This control strategy can provide the same performance as achieved from a separately excited DC machine, and is proven to be well adapted to all type of electrical drives associated with induction machines [9]
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