Özet:

A high gain boost (HGB) converter fed single-phase voltage source inverter (VSI) with its control for DC to AC power conversion in uninterrupted power supply (UPS) and renewable energy (RE) applications is presented in this paper. The conventional DC-DC boost converter with a coupled inductor (CI) and switched capacitor (SC) is utilized to obtain HGB conversion. Further, the output voltage of the inverter is controlled by sinusoidal pulse width modulation (SPWM) technique. The detailed design and analysis of HGB converter fed single-phase VSI is also presented. The SPWM control scheme for the VSI is developed and presented. In order to validate the HGB converter fed single-phase VSI, the simulation model is developed in LTspice software environment and results are validated. The results show HGB converter achieves a gain of about 10 and the single-phase VSI is able to provide a rms voltage of 220 V without using the step-up transformer. The total harmonic distortion (THD) of output current is found to be reduced below 4%. Further, the results obtained are found to be in close agreement with theoretical values.

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