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27- Level High Frequency Transformer Based- MLI for Integration of Renewable Energy

M. Krishna, P. Ajay D, Vimal Raj

Abstract


This research proposes a unique high-
frequency transformer (HFT)-based multilevel inverter
(MLI) with 27 levels can be constructed with a single DC
power supply and twenty switching devices. The proposed
MLI topology comprises three medium frequency isolation
transformers, each with a different rated voltage. Since the
transformers used in MLI operate at high frequencies, the
suggested system has a smaller volume and weight. A
cascaded H-bridge (CHB) connects each transformer's
primary windings, and the secondary windings are
connected in series with the load. To find the nearest level,
the HFT-based MLI uses a basic reasoning switching
mechanism known as nearest level control (NLC). The
proposed HFT-based multilevel inverter's performance was
modeled and simulated using the MATLAB/Simulink
environment.


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DOI: https://doi.org/10.37591/.v13i2.7539

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