Abstract
In this paper, an optimal harmonic stepped waveform (OHSW) method is proposed to reduce the voltage harmonics available at the output of solar photovoltaic (SPV) fed fifteen level cascaded multilevel inverter (CMLI). This technique is used to solve the harmonic elimination equations based on stepped waveform analysis in order to obtain the optimal switching angles. The OHSW method considers the output voltage waveform as four equal symmetries in each half cycle and the magnitude of six numbers of harmonic orders is reduced. Simulations are carried out in Matlab/Simulink and a 3 kWp solar plant is implemented in hardware to show the effectiveness of the proposed system.
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