A Novel Quasi-Resonant Switched-Capacitor High Step-Up Multilevel Inverter with Self-Voltage Balancing

Abstract

In the proposed study, a new horizontal high step-up quasi-resonant switched capacitor multilevel converter topology is developed depend on versatile switched-capacitor basic modules and units which are series connected. The amount of utilized elements such as switch capacitors, basic modules, and units assign the magnitude of voltage in the output. The recommended inverter is capable to balance the capacitors’ voltage inherently. This structure not only does minimize the number of capacitors, but also diminishes the amount of power electronic keys, and the magnitude of the voltage on keys for specified levels optimally. The comparative analysis based on the other multilevel inverter structures and traditional ones, is conducted to attest the superiority of the suggested circuit. The obtained outcomes demonstrate that the displayed topology needs a fewer amount of switches and DC sources. The quasi-resonance technique is used to stifle the current’s spikes which rise up out of the instantaneous parallel linking the series-connected capacitors and the input source. This action reduces the amount of capacitance, increases the life of the capacitors and diminishes the electromagnetic interface. The simulation area is catered to corroborate the function of the recommended high step-up multilevel converter.