Dynamic tracking MPP control of offshore bifacial floating photovoltaic systems with improved EMPC accounting for chaotic properties

Minan Tang, Jinping Li, Hua Geng, Tong Yang, Hanting Li, Yaqi Zhang, Xi Guo and Zhanglong Tao

Applied Energy, 2025, vol. 398, issue C, No S0306261925011481

Abstract: The deployment of offshore floating bifacial photovoltaic (FBPV) systems is constrained by the inherent challenges posed by harsh marine environments, which induce chaotic movements and fluctuating power outputs. To address this issue, we propose the implementation of an improved Economic Model Predictive Control (EMPC) strategy in conjunction with a Modified Sine Algorithm Guided Dung Beetle Optimization (MSADBO) algorithm for the precise tracking of the maximum power point (MPP). The approach commences with the formulation of dynamic equations for the FBPV’s longitudinal tilt, followed by the confirmation of chaos through the utilization of bifurcation and phase diagrams. Subsequently, a dynamic mathematical model is constructed, taking into account the relationship between irradiance and the component’s tilt angle. Accordingly, a time-varying nonlinear model is formulated, which facilitates the design of an EMPC controller with power generation and switching losses as key performance indicators. The MSADBO algorithm optimizes the controller’s state constraints, thereby improving the accuracy and efficiency of the optimization process and ensuring control robustness. Simulations conducted under different operational conditions demonstrate the effectiveness of the method in stabilizing power output and accurately tracking the MPP. The proposed method shows 1.5 %–2 % better tracking precision and reduces power variation by 30 % compared to traditional EMPC, thereby validating its effectiveness and setting a stage for future research on FBPV grid integration.

Keywords: Offshore FBPV system; Maximum power point tracking; Improved EMPC; MSADBO; Chaotic motion (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261925011481
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:398:y:2025:i:c:s0306261925011481

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2025.126418

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().