Active filtration theory of multiphase power supply sys tems aimed at minimizing the power loss in the transmission line
DOI:
https://doi.org/10.15407/dopovidi2020.11.039Keywords:
active current, power factor, power loss, shunt active filterAbstract
The active filtration theory of multiphase power supply systems aimed at minimizing the power losses in the transmission line has been further developed. New relations are substantiated, and a new physical content is given for the instantaneous active current and the instantaneous apparent power, which take into account the dependence of the transmission line resistance ratio and correspond to similar integrated values of the periodic mode of a multiphase power supply system. It is shown that the instantaneous and integral values of the minimum possible losses are proportional to the square of the load power and inversely proportional to the short-circuit power. These values can be used to determine the power factors of a given load and gain coefficients for power losses. The calculated ratios for the gain coefficients for the instantaneous and integral power losses when using a shunt active filter with control strategies that form in the transmission line vectors of the active current according to the proposed formulas were obtained. The results of computer simulation confirmed the adequacy of all modified relations for the basic concepts of the active filtration theory of multiphase power supply systems and the advantages of the proposed active filtration strategies.
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