ABSTRACT

Nonlinear phenomena investigated through simulation on Single phase fully controlled H-bridge inverter in this paper. This paper is proposed to use MATLAB/Simulink software to design, analysis and evaluation of single phase power electronic inverter performance on different loads condition. Appropriate conducting angles with suitable delays are applied for controlling the switching of the switches of inverter by a simple control strategy. In this paper Load is consider as bifurcation parameter so by changing it system run towards chaos side from smooth side. In this paper firstly the circuit is modeled with Simulink then result ant output voltage and current waveforms at different loads are analyzed hence the distorted output waveforms is also shown so that can be studied to find out the instability in the circuit. The simulation response shows the operation of single phase h- bridge inverter and also nonlinearities at different loads. It is observed that the inverter turns from periodic operation to chaotic operation as the loads are changed .The waveforms obtained by simulation indicates that the inverter shifts from period one to chaos as the circuit parameters varied. This information is useful for designing hardware circuits in area of power electronics.