Speed tracking of indirect field oriented control induction motor using neural network

Bohari, Azuwien Aida (2016) Speed tracking of indirect field oriented control induction motor using neural network. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

This thesis presents the development of speed tracking of indirect field oriented control (IFOC) induction motor (IM) using neural network (NN). IM are usually low cost, physically smaller, reliable and rugged machines. Furthermore, in contrast to direct current (DC) motor, it can also be used in hostile or volatile environment. Unfortunately, the operation of IM is much more complicated rather than DC motor and low control precision as the field and torque producing component of its input current are linked. To achieve better control precision, it is necessary to control these two parameters of stator current independently. The objectives of this project is to implement an efficient neural network indirect field oriented control (NNIFOC) that could be implanted to control the speed of IM and capable of observing steady state, transient motor behavior and thus improves the performance of the drive. Here, the online NN with 1-3-1 network structure with feed-forward architecture is used to maintain the speed trajectory specified by reference model and compared with offline NN based approach to the area of decoupling control using IFOC principles of speed tracking for an IM. Both offline and online NN are trained by backpropagation technique with one hidden layer to update parameters of weight and bias. Simulation model has been developed using MATLAB Simulink. Validity of proposed NNIFOC is verified with actual experimental results focusing on speed variation and load disturbance using digital signal processing (DSP) techniques. The results show that online NNIFOC reveals better performance than offline NNIFOC in terms of settling time.

Item Type:Thesis (Masters)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2000-2891 Dynamoelectric machinery and auxiliaries
ID Code:8814
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:02 Feb 2017 12:16
Last Modified:02 Feb 2017 12:16

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