Modulation Variants in DC Circuits of Power Rectifier Systems with Improved Quality of Energy Conversion—Part I

Tomasz Pajchrowski, Michał Krystkowiak and Dominik Matecki
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Tomasz Pajchrowski: Robotics and Electrical Engineering, Faculty of Control, Poznan University of Technology, 60-965 Poznań, Poland
Michał Krystkowiak: Robotics and Electrical Engineering, Faculty of Control, Poznan University of Technology, 60-965 Poznań, Poland
Dominik Matecki: Robotics and Electrical Engineering, Faculty of Control, Poznan University of Technology, 60-965 Poznań, Poland

Energies, 2021, vol. 14, issue 7, 1-18

Abstract: The article presents various concepts of three-phase power rectifiers with improved quality of converted electric power. This effect is obtained by modulating the currents in the DC output circuits of the rectifiers by means of power electronics controlled voltage or current sources, working as a so-called voltage or current modulators. For further quality improvement of the grid currents of the analyzed systems, it was proposed to use an additional controlled current source connected in parallel to the DC load, hereinafter referred to as a supporting system. The original elaborated method of controlling this source (supporting system) was presented. The main goal of the work was to propose a solution for an effective method of improving the quality of energy conversion in rectifier systems, especially high power ones, by using controlled current sources in DC circuits, operating as the power electronics current modulator and the supporting system.

Keywords: diode rectifier; current modulator; supporting system; sinusoidal current; three-phase system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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