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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44767

ANN-Based Dynamic Control to Improve Power Quality in Renewable Energy Sources Connected to the Grid and Fed by A Synthesis Segmental Multilevel Converter

M. Manohara, Dr. D. Leela Rani, P. R. Murali Mohan, Dr V. Chandra Jagan Mohan

Abstract

Solar photovoltaic (PV) systems have attracted a lot of attention recently due to the fact that it is quite simple to set them up and they are readily available. In which the correct energy management should be primarily addressed for the successful utilisation of PV electricity. [Citation needed] Throughout the traditional works, numerous control strategies have been developed to compensate for reactive power. On the other hand, it has problems with lower system performance, higher loss, and high harmonics. These are its shortcomings. The purpose of this work is to propose a novel controlling mechanism that will be referred to as the Synthesis Segmental Multilevel Converter (SSMC) for reactive power compensation in three-phase grid systems. In the beginning, it makes use of a technique known as Enhanced Perturb and Observe, or EPO, in order to obtain the maximum amount of power from the solar PV systems. After the panel separation has been completed, the three-phase power input is transferred to the SSMC converter. This is the component that is responsible for carrying out the procedures of synchronisation and switching pulse production. During synchronisation, integrated techniques such as Proportional Integral (PI), Fuzzy Logic Controller (FLC), and Improved Artificial Neural Network (IANN) techniques are utilised in order to keep the voltage, magnitude, and phase angle at the same level. PI is an acronym for "proportional integral," and FLC and IANN stand for "fuzzy logic controller" and "improved artificial neural network," respectively. As a result of this, a method known as inductance-capacitance (LC) filtering is utilised in order to cut down on the amount of harmonic distortion in the signal. After that, the dq0 to abc transformation, which is conducted for the purpose of lowering the large number of errors, is carried out with the assistance of the park transformation. In conclusion, the error-free signal is transmitted to the three-phase grid system while simultaneously reducing the number of harmonics. Also, simulation and analytical results have been gathered so that the suggested method can be judged on how well it works.

Keywords

Renewable Energy Sources (RES), Photovoltaic (PV) systems, Synthesis Segmental Multilevel Converter (SSMC), Maximum Peak Point Tracking (MPPT), Reactive Power Compensation, and Synchronization.

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