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.
Reduction of Voltage Harmonics in Solar Photovoltaic fed Inverter of Single Phase Stand Alone Power System
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received September 27, 2013; final manuscript received March 11, 2014; published online May 13, 2014. Assoc. Editor: Santiago Silvestre.
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Albert Alexander, S., and Thathan, M. (May 13, 2014). "Reduction of Voltage Harmonics in Solar Photovoltaic fed Inverter of Single Phase Stand Alone Power System." ASME. J. Sol. Energy Eng. November 2014; 136(4): 044501. https://doi.org/10.1115/1.4027267
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