The use of a p-q theory for controlling a three-phase active power line conditioner

Abstract

This paper is devoted to development of theoretical positions and experimental research aimed at further development of the theory of calculating the three-phase systems for reactive power compensation and harmonic distortion. Simplified scheme of a three-phase parallel type active power line conditioner, connected to the system 3-phase network-nonlinear load are presented. The work of a parallel-type three-phase active power line conditioner with using a p-q theory is investigated in this paper. A method is described that allows one to move from the abc to the αβ0 coordinate system with using a transition matrix. Expressions of the reference with taking into account the condition of ensuring a constant voltage of the storage capacity are obtained. Defined expressions needed to calculate the power consumed by the compensator for stabilizing the voltage at the capacitive storage with using a Clark conversion. A Matlab/Simulink model is constructed with a control system synthesized on the basis of the p-q theory. With the help of the developed model evaluated the quality of the filtration current curve. The diagrams of the load current, the estimated current of the compensator and the resulting current of system consumption for one phase presented. The harmonic composition of the current consumed from the network and the effect of using a filter-compensating converter are analyzed. Ref. 11, fig. 5.

Keywords

References

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Copyright (c) 2018 Дмитро Анатолійович Миколаєць, Максим Олексійович Мацюк (Автор)