Harmonic Reduction of Enhanced Single Phase Step-Up Five-Level Inverter Using Lcl Filter

Darzi Badai Ameer Suhail, K. Chithambaraiah Setty


One of the important criteria is the quality and harmonic contents of the current being injected to the grid. High-order harmonics of the grid current should be very limited (lower than 0.3% of the fundamental current). Beside the topology of the power electronic interface, the output filter also affects the quality of the load voltage .proposed a 5-level inverter is presented for grid integration systems along with its output LCL filter design. Analytical calculation of losses for the 5-level inverter and the output LCL filter is presented. It is also compared to the H-bridge inverter in terms of output voltage and current harmonics, and the overall losses.

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