Abstract
A new speed control approach based on the Adaptive Neuro-Fuzzy Inference System (ANFIS) to a closed-loop, variable speed induction motor (IM) drive is proposed in this paper. ANFIS provides a nonlinear modeling of motor drive system and the motor speed can accurately track the reference signal. ANFIS has the advantages of employing expert knowledge from the fuzzy inference system and the learning capability of neural networks. The various functional blocks of the system which govern the system behavior for small variations about the operating point are derived, and the transient responses are presented. The proposed (ANFIS) controller is compared with PI controller by computer simulation through the MATLAB/SIMULINK software. The obtained results demonstrate the effectiveness of the proposed control scheme.
Highlights
Over the last three decades, variable speed drives are the most complex of all power electronic systems
A new speed control approach based on the Adaptive Neuro-Fuzzy Inference System (ANFIS) to a closed-loop, variable speed induction motor (IM) drive is proposed in this paper
ANFIS has the advantages of employing expert knowledge from the fuzzy inference system and the learning capability of neural networks
Summary
Over the last three decades, variable speed drives are the most complex of all power electronic systems. To a traditional power electronics engineer with expertise in the design of, such as thyristor phase-controlled converters, switching mode power supplies, or uninterruptible power supply systems, the technology is incomprehensible because of its complexity and multidisciplinary characteristics. Modern variable speed drive applications require steeples control and suitable dynamic response and accuracy. These considerations have been met to a large extent in the past decade by thyristor-controlled dc machines. For the higher power drives in industries, the lighter, less expensive, reliable simple, more robust and commutator less induction motors are desirable and these motors are being applied today to a wider range of applications requiring variable speed. A controlled rectifier is used in the rotor circuit to feed the external resistance, and by varying the firing angle, the effective rotor impedance is controlled
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