Designing of Hybrid Multi-Level Inverter for Photo Voltaic Applications
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Keywords:
PV, VFD, UPS, THD, ACAbstract
The global surge in energy demand has highlighted the limitations of fossil fuels, both in terms
of cost and availability, prompting a shift towards renewable energy sources. Developed countries are
effectively managing their resources for current and future needs, while developing nations face imminent
fossil fuel shortages. Renewable energy, particularly photovoltaic (PV) systems, offers a sustainable
alternative due to their noiseless operation, low maintenance, and minimal environmental impact. The
main challenge is the integration of renewable energy into existing AC power grids. This research focuses
on incorporating PV systems to meet various power demands using a novel topology known as Multiple
Levels Inverter with switch DC sources. Inverters, essential for converting DC voltage from sources like
PV arrays into AC, are crucial in this process.The proposed design uses PV output as the DC input
voltage, converting it into AC power via a single-phase multi-level inverter. Traditional two-level
inverters suffered from issues like high total harmonic distortion (THD) and increased losses with higher
levels. Multi-level inverters, however, are advantageous for high-power applications, reducing harmonic
distortion and approaching a sinusoidal output waveform as levels increase. This study examines the
voltage and current waveforms and evaluates total harmonic distortion in the system. Applications such as
variable frequency drives (VFD), pumps, and uninterruptible power supplies (UPS) benefit from multi
level inverters. The performance of the single-phase multi-level inverter will be analyzed using
MATLAB and Simulink software, providing insights into its efficacy and efficiency.
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References
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