Modeling, Simulation, and Comparative Analysis of Flyback Inverter Using Different Techniques of PWM Generation

Nowadays, the flyback inverter has increased more interest due to its various advantages. Some of these are its simplicity, low cost, and high efficiency. Applying pulse-width modulation techniques to improve the performance of many types of inverters is under research. In this paper, distinct switching techniques generate the gate pulses for switches of the flyback inverter. The paper deals with the implementation and comparative analysis of three different models of flyback inverters: (1) open-loop flyback inverter with the pulse generator, (2) open-loop flyback inverter with pulse width modulation (PWM), and (3) open-loop flyback inverter with a sinusoidal pulse-width modulation (SPWM) technique. The output voltage and current signals are pure sinusoidal when the SPWM technique generates the gate pulses. The SPWM technique used in model-3 improves the nature of the output AC signal compared to the other two models.