PID-Based control of sepic power stage with QS bacterial-based search algorithm for renewable energy applications
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Full Text |
Pdf
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Author |
Fredy H. Martínez S., and Angélica V. Rendón C.
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e-ISSN |
1819-6608 |
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On Pages
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1897-1905
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Volume No. |
18
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Issue No. |
16
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Issue Date |
October 27, 2023
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DOI |
https://doi.org/10.59018/0823234
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Keywords |
bacterial-based search, harmonic distortion, interleaved SEPIC, PID control, power factor correction, quorum sensing, renewable energy.
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Abstract
In response to the growing need for efficient power conversion in renewable energy applications, this study
addresses the issue of harmonic distortion and low Power Factor (PF) values caused by non-linear loads, such as electronic
devices. Low PF results in reduced efficiency, increased energy consumption, and higher costs for both consumers and
utilities. Active correction, typically involving an active circuit implemented using a power converter, provides an optimal
solution by offering high performance, precise regulation, and low harmonic distortion. This research proposes a Power
Factor Correction (PFC) solution utilizing an Interleaved DC-DC Single Ended Primary Inductance Converter (SEPIC) for
the power stage and a Proportional Integral Derivative (PID) controller for the control block, tuned by a Quorum Sensing
(QS) bacterial-based search algorithm. The PID controller parameters are derived using a frequency-domain approach,
which presents advantages such as reduced design complexity, improved stability margins, and enhanced SEPIC
performance. Simulation results indicate reduced overshoot, settling time, rise time, and Total Harmonic Distortion (THD)
percentage, as well as increased efficiency and power factor nearing unity. The proposed scheme also demonstrates
improved dynamic performance for variations in load, line, and reference voltage. Owing to its high efficiency, precise
voltage regulation, and minimized impact on the electrical grid, this solution is well-suited for renewable energy
applications, where optimizing energy conversion and ensuring stable operation are crucial for the overall performance of
renewable energy systems.
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