Open AccessInvestigations on Three-phase Grid-Connected Inverter using PWM Controllers
Author(s) -
D. Manikanta Swamy,
M. Venkatesan,
M. Subbarao
Publication year - 2020
Publication title -
journal of engineering science and technology review
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.19
H-Index - 28
eISSN - 1791-9320
pISSN - 1791-2377
DOI - 10.25103/jestr.135.23
Subject(s) - total harmonic distortion , pulse width modulation , inverter , three phase , topology (electrical circuits) , control theory (sociology) , electronic engineering , computer science , matlab , controller (irrigation) , voltage , photovoltaic system , grid , engineering , electrical engineering , mathematics , control (management) , agronomy , artificial intelligence , biology , operating system , geometry
In recent years, a Multilevel Inverter (MLI) topology is highly preferred in the various renewable energy applications for converting power due to their merits. In this paper, a three-phase inverter has been designed for grid-connected applications using Proportional Integral (PI) current controller scheme. To generate a sequence, the Level shift (LS) and Phase Shift (PS) Pulse Width Modulation (PWM) methodologies are adapted. This topology has been designed with two stages: the DC-DC conversion stage and DC-AC conversion stage. The DC-DC conversion stage is used to enrich input DC voltage which is obtained from the solar PV array. The PI current controller has been designed to regulate the grid current with park transformation. The performances of the inverter have been examined in terms of Total Harmonic Distortion (THD) using different PWM techniques and also investigated with existing research works. The developed results are verified using MATLAB/ Simulink.