Open Daily: 10am - 10pm | Alley door pickup 10am - 7pm 3038 Hennepin Ave Minneapolis, MN
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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Experimental Study on Transformerless Grid-Connected PV Inverter

Experimental Study on Transformerless Grid-Connected PV Inverter

Ramasamy, Suganthi
Perumal, Maruthupandi
Gatto, Gianluca

Paperback

Physics

ISBN10: 6208436648
ISBN13: 9786208436643
Publisher: LAP Lambert Academic Publishing
Published: Mar 18 2025
Pages: 172
Weight: 0.52
Height: 0.40 Width: 6.00 Depth: 9.00
Language: English
This thesis investigates transformerless grid-connected photovoltaic (PV) inverters, focusing on efficiency, leakage current reduction, and reactive power control. Transformerless inverters offer higher efficiency, lower cost, and compact size but suffer from leakage currents that impact total harmonic distortion (THD) and electromagnetic interference. Various inverter topologies, including H7, H8, and NPC-based designs, are analyzed for their performance in terms of common-mode voltage (CMV), power losses, and compliance with IEEE-1547 standards. A novel modulation strategy is proposed to mitigate leakage current while enhancing reactive power capability and low voltage ride-through (LVRT) performance. The study introduces an improved CMV clamped topology that eliminates the need for extra filters, reducing cost and complexity. Simulation and experimental results validate the effectiveness of the proposed techniques, demonstrating enhanced inverter performance. This research contributes to the development of next-generation, efficient, and reliable transformerless PV inverters for grid applications.

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