Enhanced control strategy for photovoltaic emulator operating in continuously changing environmental conditions based on shift methodology

Ambe Harrison; Safeer Ullah; Njimboh Henry Alombah; Mohit Bajaj; Wulfran Fendzi Mbasso; Sheeraz Iqbal; Milkias Berhanu Tuka

doi:10.1038/s41598-024-64092-7

Scientific Reports (Jun 2024)

Enhanced control strategy for photovoltaic emulator operating in continuously changing environmental conditions based on shift methodology

Ambe Harrison,
Safeer Ullah,
Njimboh Henry Alombah,
Mohit Bajaj,
Wulfran Fendzi Mbasso,
Sheeraz Iqbal,
Milkias Berhanu Tuka

Affiliations

Ambe Harrison: Department of Electrical and Electronics Engineering, College of Technology (COT), University of Buea
Safeer Ullah: Quaid-E-Azam College of Engineering and Technology
Njimboh Henry Alombah: Department of Electrical and Electronics Engineering, College of Technology, University of Bamenda
Mohit Bajaj: Department of Electrical Engineering, Graphic Era (Deemed to Be University)
Wulfran Fendzi Mbasso: Technology and Applied Sciences Laboratory, U.I.T. of Douala, University of Douala
Sheeraz Iqbal: Department of Electrical Engineering, University of Azad Jammu and Kashmir
Milkias Berhanu Tuka: Department of Electrical and Computer Engineering, Addis Ababa Science and Technology University

DOI: https://doi.org/10.1038/s41598-024-64092-7
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 18

Abstract

Read online

Abstract This article investigates an inventive methodology for precisely and efficiently controlling photovoltaic emulating (PVE) prototypes, which are employed in the assessment of solar systems. A modification to the Shift controller (SC), which is regarded as a leading PVE controller, is proposed. In addition to efficiency and accuracy, the novel controller places a high emphasis on improving transient performance. The novel piecewise linear-logarithmic adaptation utilized by the Modified-Shift controller (M-SC) enables the controller to linearly adapt to the load burden within a specified operating range. At reduced load resistances, the transient sped of the PVE can be increased through the implementation of this scheme. An exceedingly short settling time of the PVE is ensured by a logarithmic modification of the control action beyond the critical point. In order to analyze the M-SC in the context of PVE control, numerical investigations implemented in MATLAB/Simulink (Version: Simulink 10.4, URL: https://in.mathworks.com/products/simulink.html ) were utilized. To assess the effectiveness of the suggested PVE, three benchmarking profiles are presented: eight scenarios involving irradiance/PVE load, continuously varying irradiance/temperature, and rapidly changing loads. These profiles include metrics such as settling time, efficiency, Integral of Absolute Error (IAE), and percentage error (epve). As suggested, the M-SC attains an approximate twofold increase in speed over the conventional SC, according to the findings. This is substantiated by an efficiency increase of 2.2%, an expeditiousness enhancement of 5.65%, and an IAE rise of 5.65%. Based on the results of this research, the new M-SC enables the PVE to experience perpetual dynamic operation enhancement, making it highly suitable for evaluating solar systems in ever-changing environments.

Published in Scientific Reports

ISSN: 2045-2322 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Medicine; Science
Website: https://www.nature.com/srep/

About the journal

Abstract

Keywords