Design and Development of Asymmetrical Multi-Level Inverter for solar energy

摘要

Global warming and the shortage of fossil fuels have led to the development of renewable energy resources in order to satisfy the feature energy demand of depleting plant. The rapid growth of renewable energy with in the last few decades has resulted in the design of efficient power switching converters suitable for high power applications such as solar, wind systems etc. Due to variable nature of renewable energy sources, frequency and output voltage adjustments are the challenging outcomes to interconnect, these systems to power grid. These problems are overcome by proposed asymmetric hybrid multilevel inverter. This paper proposed a new asymmetrical multilevel inverter system, which is composed of an asymmetrical DC sources and a new fifteen level inverter. In this new fifteen level inverter topology with the decreased number of powers witches and its modulation technique is introduced. In this way proposed generates sinusoidal output voltage. A prominent attribute of proposed fifteen levels inverter comprise of only seven switches and this structure allow a reduction of the system cost and size. Effectiveness of proposed topology has been illustrated by analysis and simulation.