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Evaluating the Effect of Optical Coupler in a 1.5KVA PWM Inverter

This paper presents the design and implementation of a 1.5KVA inverter system. The aim of the paper is to evaluate the effect of optocoupling technology on inverter system. The developed circuit compares the output load with the input voltage when 4N35 opto coupler is used and in the absence of it. Two different inverter systems were designed and the voltages at the output pins of Sg3524 were measured. It was observed that there seems to be fluctuation in the output voltage of the system without optocoupling and the voltage of the inverter keeps dropping till the system shuts down. The basic principle of the operation of the inverter is a simple conversion of 12V DC at a frequency of 50Hz to 230V AC. The result shows that optocoupling technique is essential part of an inverter system to achieve a good efficiency.