Design and Analysis of a Single Phase Unipolar Inverter Using Sliding Mode Control
Jithesh M V1,  Prawin Angel Michael2
1Jithesh M V,  Electrical and Electronics Engg.  University, Coimbatore, India.
2Dr. Prawin Angel Michael, Electrical and Electronics Engg. University, Coimbatore, India.
Manuscript received on November 27, 2012. | Revised Manuscript received on December 02, 2012. | Manuscript published on December 30, 2012. | PP: 281-284| Volume-2, Issue-2, December 2012.  | Retrieval Number: B0941112212 /2012©BEIESP

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Abstract: This project is about modeling and simulation of single phase unipolar Pulse Width Modulation (PWM) inverter using sliding mode control. The model was implemented using MATLAB/Simulink with the Sim Power Systems Block Set. In this model Metal Oxide Field Effect Transistor(MOSFET) model was used as switching device. The software used to design, analysis and evaluation of single phase inverter and their controllers in this project is MATLAB, Simulink. In inverter circuit, an AC output is obtained from a DC input by appropriate sequence of switching scheme. For that, in this model Pulse Width Modulation technique is used in control the operation of switches. The switching scheme applied is unipolar. Sliding mode control (SMC) is a robust controller with a high stability in a wide range of operating conditions .It is not possible to apply directly to multi switches power converters. In this paper, a fixed switching frequency sliding mode controller is used for control a single-phase unipolar inverter. The PWM signal is used to control switching states of the MOSFETs will functions in inverter model that create the control scheme. Then, simulation is made from the inverter model in Simulink.
Keywords: Pulse width modulator, Sliding mode control, Uinpolar single phase inverter.