Faizal Arya Samman, Muhammad Aswan, Andi Ejah Umraeni Salam
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DC-AC Inverter 220-230 VAC for Home Scale Photovoltaic Systems
This paper presents a DC-AC inverter for home-scale solar-based electrical system applications that providing 220-230 VAC. The inverter is designed according to standardized Total Harmonic Distortion (THD) value. Two pulse waveforms to switch power MOSFET are evaluated for comparative studies, i.e. Square Wave Pulse (SWP) and Sinusoidal Pulse Width Modulation. 36V DC voltage is used to supply the inverter. A microcontroller is used to generate pulse signals. Low Passive Filters and dampers are used to reduce voltage harmonics caused by the switching process and produce a pure sine signal. By comparing the simulation and experimental results between SWP and SPWM, a lower THD percentage was obtained by using the SPWM switching technique.
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