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Research Article | Open Access
Volume 13 2021 | None
CONTROL CURRENT IN SMALL-SCALE DC MICROGRID USING MULTI-LEVEL CONVERTER
Mr. M Mahammed Jabeer, Mr.P.Sunil Kumar, Kopparapu Sujindrakumar, Bandi Sanamma
Pages: 3093-3098
Abstract
Since multilevel converters provide the combination of low switching frequencies and good harmonic performance, they are interesting options for small-scale DC power networks. Replicated submodules may also be added to the cascaded converter chain to increase dependability. DC micro grids, with very low line impedance, are developing as the next generation of small-scale electric power networks. It is consequently essential for a power flow controller to have a quicker transient response and accurate power flow management since this phenomena generates high currents in the micro grids even for a little change in voltage. In order to achieve high speed and high accuracy power flow management in a dc micro grid, multi-level converters are used as the power flow controllers in this research. Because a multi-level converter is being utilised, the output filter may be tiny. In order to meet the need of current ripple, this project also provides the design of a multi-level converter's output LC filter. Compared to traditional two-level converters, we can confirm that a multi-level converter with a smaller filter can achieve high-speed and high-precision power flow management for low line impedance situations. MATLAB/Simulink Simulation results are used to assess the control performance of each output current in the step response while taking transient variations in the power flow into consideration.
Keywords
Since multilevel converters provide the combination of low switching frequencies and good harmonic performance, they are interesting options for small-scale DC power networks.
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