Abstract
A multifunctional controller based on a power electronic converter is considered. The controller compensates the nonactive power in three-phase power-supply systems and performs the following functions; regulation of the reactive power, active filtration, and load balancing. By these means, it improves the power quality in low-voltage distribution systems. Control algorithms for the unit are considered. They are based on conversion of the signals from three-phase stationary coordinates to a two-phase rotating (synchronous) coordinate system (abc/dq transformation). The converter is controlled on the basis of sinusoidal pulse-width modulation. A MatLab/Simulink model is developed to study controller operation and the effectiveness of the proposed algorithms. The results of simulation are presented for different operational modes: reactive-power compensation; filtration of higher grid-current harmonics; current compensation with an unbalanced load; and complete compensation of the nonactive power with a nonlinear unbalanced load.
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Original Russian Text © Yu.K. Rozanov, M.G. Lepanov, M.G. Kiselev, 2014, published in Elektrotekhnika, 2014, No. 8, pp. 51–60.
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Rozanov, Y.K., Lepanov, M.G. & Kiselev, M.G. Multifunctional controller based on a power electronic converter. Russ. Electr. Engin. 85, 527–535 (2014). https://doi.org/10.3103/S1068371214080100
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DOI: https://doi.org/10.3103/S1068371214080100