@inproceedings{11a808b9dddc4f0b97ab0ced23132b65,
title = "High Gain Multilevel Inverter Based Grid Integrated Solar Power Transfer System with Power Quality Enhancement",
abstract = "A high gain multilevel inverter (HGMLI) based solar power transfer system (SPTS) is proposed in this paper. The five-level symmetrical source topology consists of eight semiconductor switches and two non-isolated DC sources. The HGMLI is comprised of a multilevel generator unit and a polarity alternating unit. Four switches in the circuit operate to achieve unipolar multiple levels and another four switches change the alternate polarity to get the desired five-level AC output voltage. Four switches are operated in level-shifted pulse width modulation and the other four are at the fundamental frequency. Moreover, the polarity alternating switches are operated at zero voltage levels to reduce the switching losses. A voltage booster circuit extracts maximum power from the photovoltaic (PV) array and exhibits a high gain in the voltage transformation for obtaining the desired DC-link voltage even for a low input voltage. The MLI is controlled by a second-order generalized integral-based filter to integrate active power to the grid. At the point of common coupling (PCC), a nonlinear harmonic load is connected, and its impact on grid power quality is mitigated by the SPTS operation maintaining within IEEE limits. Hence, maximum power extraction, active power injection, and power quality enhancement are the major objectives of this work. The proposed system performance is validated at different operating conditions with extensive analysis in the MATLAB/Simulink model.",
keywords = "grid integration, Multilevel inverter, power quality, solar PV",
author = "{Renuka Varma}, {P. C.} and {Nirmal Mukundan}, {C. M.} and P. Jayaprakash and {Al Durra}, Ahmed and Tarek El-Fouly",
note = "Funding Information: This work was supported in part by the TEQIP and Centre of Excellence in Systems Energy and Environment, Government College of Engineering, Kan-nur, India, and in part by the Khalifa University of Science and Technology under Award No. CIRA-2019-049. Funding Information: The power characteristics shown in Fig. 7 illustrate the ability of SPTS to support the reactive power and harmonic requirements of the load for any change in irradiation. Active power of the load is supported by the SPTS alone for 1000 W/m2. For lesser irradiations, the grid provides the active power of load and the reactive power of the grid is zero ensuring UPF operation. Also, it is observed that the active power of the SPTS is decreasing for decreasing irradiation, and grid active power increases for decreasing irradiations. Publisher Copyright: {\textcopyright} 2021 IEEE.; 47th Annual Conference of the IEEE Industrial Electronics Society, IECON 2021 ; Conference date: 13-10-2021 Through 16-10-2021",
year = "2021",
month = oct,
day = "13",
doi = "10.1109/IECON48115.2021.9589348",
language = "British English",
series = "IECON Proceedings (Industrial Electronics Conference)",
publisher = "IEEE Computer Society",
booktitle = "IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society",
address = "United States",
}
