@article{Zhemerov_Tugay_2015, title={COMPONENTS OF THE TOTAL POWER LOSSES IN THREE-PHASE ENERGY SUPPLY SYSTEMS WITH SYMMETRIC SINUSOIDAL VOLTAGE SOURCE}, url={http://eie.khpi.edu.ua/article/view/2074-272X.2015.4.05}, DOI={10.20998/2074-272X.2015.4.05}, abstractNote={<strong><em>Purpose. </em></strong><em>Three-phase energy supply system with a symmetrical resistive load operates in mode with the highest possible efficiency in a case of zero instantaneous reactive power and the absence of pulsations instantaneous active power. When load parameters are changed, three-phase energy supply system starts to operate in a mode with additional energy losses. The goal of the paper is to determinate the relations between the components of additional losses and their rezone. <strong>Methodology. </strong>We have applied the modern theory of instantaneous active and reactive power, the graphical filling complex branched energy supply system of simplified design scheme, the theory of electrical circuits, computer Matlab-simulation. <strong>Results.</strong> We have developed an universal relation to determine the components of total power loss in the three-phase supply systems with symmetrical three-phase sinusoidal voltage source and any possible load. Further verification of this relation in the Matlab-model of three-phase energy supply system shows its high accuracy. <strong>Originality. </strong>For the first time, we have carried out relation between RMS reactive and RMS active power instantaneous pulsation and the corresponding components of additional losses.</em> <em>Consequently it becomes possible to offer a unique method of weighting evaluation. <strong>Practical value. </strong>We have developed position for detecting the causes of additional losses in three-phase supply systems with symmetrical sinusoidal voltage source, as well as to substantiate the correctness of the choice of filter-compensating device. We have developed a Matlab-model which allows to investigate the energy efficiency of three-phase energy supply system and to calculate the components of additional power losses of any possible reasons for their occurrence. </em>}, number={4}, journal={Electrical Engineering & Electromechanics}, author={Zhemerov, George G. and Tugay, D. V.}, year={2015}, month={Aug.}, pages={28–34} }