INDUCTION MOTOR CONTROLLER USING FUZZY LOGIC AND DIRECT TORQUE CONTROLLER

DESIGN DETAILS
Direct torque control (DTC) is one of the methods used in variable frequency drives to control the torque (and thus finally the speed) of three phase AC electric motors. The principle of DTC method is to select one of the inverters namely six voltage vectors and two zero vectors to keep the stator flux and torque within a hysteresis band around the demand flux and torque magnitudes. In this design, a DTC model has been developed using MATLAB/SIMULINK and the induction motor is used evaluate the model. However, as DTC along with IM is mostly nonlinear, fuzzy controller will be more suitable for system. So, we compared the performance of both DTC and Fuzzy logic.
MODELING FACTOR OF IM
1- The stator and rotor windings are represented by stator and rotor resistances (Rs,Rr respectively.
2- The flux in the stator and rotor are represented by stator and rotor inductances (Ls,Lr) respectively.
3- The interaction between stator and rotor fluxes are represented by mutual inductance (Lm).
4- The air gap between stator and rotor is uniformly distributed and hence stator and rotor windings are in sinusoidal distribution.
5- The motor is running at steady state constant speed, i.e (d/dt ωr=0)
6- The motor is initially relaxed.
TESTING
The design is tested by applying DTC and Fuzzy logic controller separately under no load and load conditions and then compared between DTC and Fuzzy controller using Matlab 2020a version. The simulation video shows the performance of the design with its result graphs/values. We have shown the Matlab program and Simulink model implementation of each function with the corresponding file in the simulation video to make you understand how it works.
INDUCTION MOTOR SPECIFICATION
Stator Resistance-1.19
Rotor Resistance-1.04
Stator Inductance-0.01759
Rotor Inductance-0.01759
Mutual Inductance-0.55
Number of Poles-2
REFERENCES
Reference Paper-1: Design of Direct Torque Controller of Induction Motor (DTC)
Author’s Name: ALNASIR, Z.A. and ALMARHOON A.H.
Source: International Journal of Engineering and Technology
Year: 2012
Reference Paper-2: Direct Torque Control of Induction Motor Using Fuzzy Logic Controller
Author’s Name: Supriya More and Anant Kulkarni
Source: IOSR Journal of Electrical and Electronics Engineering
Year: 2015
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Hello.. Thank sir..
Can I get code for this is work