Abstract
Photovoltaic (PV) inverter systems play a crucial role in renewable energy applications. Nevertheless, their rapid switching activity frequently produces unwanted electromagnetic interference (EMI), which diminishes performance and leads to non-compliance with electromagnetic compatibility (EMC) regulations. This study suggests a hybrid method for EMI reduction that integrates Spread Spectrum Pulse Width Modulation (SSPWM) with an RC snubber circuit. SSPWM distributes the spectral energy of switching harmonics across a broader frequency range, thus reducing the intensity of EMI peaks. The RC snubber circuit, conversely, captures transient energy and minimizes voltage spikes resulting from switching transitions. Analysis through simulation and experimentation was performed for four scenarios traditional PWM, SSPWM, RC snubber, and the hybrid setup. The comparative findings indicate that the hybrid method achieves considerable EMI reduction, lessening both the amplitude of high-frequency noise and the strength of narrowband spikes. This approach is straightforward, cost-effective, and works well with current inverter designs.
Keywords
Electromagnetic Interference (EMI), Photovoltaic Inverter, Spread Spectrum PWM, RC Snubber, Hybrid Mitigation, Switching Noise, Power Electronics.
Citations
IRE Journals:
Sushmitha V, Sittalatchoumy R "Hybrid EMI Mitigation in PV Systems" Iconic Research And Engineering Journals Volume 9 Issue 5 2025 Page 670-677 https://doi.org/10.64388/IREV9I5-1711928
IEEE:
Sushmitha V, Sittalatchoumy R
"Hybrid EMI Mitigation in PV Systems" Iconic Research And Engineering Journals, 9(5) https://doi.org/10.64388/IREV9I5-1711928
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IRE Journals is an open access online journals established with an aim to publish high quality of research work in various diciplines. We have more than 6 years in publications. Over 2500+ papers already published.
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