Pulse Width Modulation (PWM) Btech EEE Final Document technique is an effective method to control the speed of induction motor. This paper is about the development of the algorithm to do the PWM operation with the help of Matlab Simulink that interfaced with the actual induction motor by Matlab/Real time workshop.
The induction motor speed was controlled by the I/O interface circuit and Simulink to allow the real time control. The control algorithm enables the rotational direction switching and these functions are carried out in Matlab simulation in actual model successfully. It is a means to control speed of induction motor by a host PC connected by local area network or wireless network.
The techniques available for the speed of induction motor are varying to change rotor resistance or terminal voltage and varying synchronous speed with change in number of poles or supply frequency. To change rotor resistance, wound-rotor induction motor is required and resistances are inserted to the rotor circuit that reduces the efficiency of the machines. The change in terminal voltage limits range of speed control.
PWM technique controls the electrical frequency of the 3-phase voltage which is supplied to the motor from the Insulated Gate Bipolar Transistors (IGBTs) inverter circuit therefore the speed is allowed to the frequency of the reference signal, input to the PWM signal generator. The Real time workshop uses in performing real-time analysis, simulation, and testing of control systems and digital signal processing (DSP) systems.
The host-target environment allows users to connect models created in Math Works design like Simulink, Matlab, and Real-Time Workshop, to physical systems, and execute in real time. The control algorithm also developed in forward or reverse direction.
Pulse Width Modulation (PWM) Btech EEE Final Document Conclusion:
The development of the algorithm performs the PWM operation using Matlab Simulink, and implementation to actual model using the Matlab/Real time workshop that controls the speed of induction motor.
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