LEAKAGE CURRENT MITIGATION TECHNIQUE IN SOLAR PV ARRAY USING PASSIVE FILTER

Electrical & Electronics Engineering

Solar photovoltaic (PV) array systems can suffer from reduced performance due to parasitic capacitances that create a closedloop path, causing leakage current. This can lead to electromagnetic interference and reduced PV panel lifespan. But there's good news: we've developed a passive filter that effectively suppresses the leakage current without requiring additional semiconductor switches. We've analyzed the system's frequency-domain and optimized the filter parameters to ensure peak performance. Our adaptive controller extracts the fundamental component of the load current for optimal harmonic compensation. Simulation results show that our passive filter is effective in suppressing leakage current within limits based on the DIN and NB/T grid codes. We've even performed comparative analyses to validate the practical feasibility and effectiveness of our system. And with our real-time hardware-in-loop (HIL) performance analysis for multiple operating cases, we've achieved total harmonic distortions (THDs) of the grid current within 5% as per the revised IEEE standard 519 and IEC standard 61727. Say goodbye to leakage current and hello to peak performance with our innovative passive filter design.

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