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Fuzzy Logic based Soft Starting of Three Phase Induction Motor

Mohamed Wasim Ansari.K, Mohanasundaram.K, Mohan.C

This paper presents the current control of three phase induction motor using Fuzzy logic. A thyristorized AC voltage Inverter is utilized as the starting equipment while the motor current regulation is carried out using an optimally tuned Proportional-Integral (PI) controller. AC voltage Inverter fed starting of induction motor is a non-linear process. The complete drive system including AC voltage inverter fed induction motor in conjunction with PI controller is optimized using Fuzzy logic. The successful implementation with a low cost microcontroller demonstrates the feasibility of the new approach. The simulation is carried out by Matlab/Simulink.