- 标题
- 摘要
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- 实验方案
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Electro-Hydrodynamic Design of an Intelligent Balloon Water Gate Controlled by an Efficient Maximum-Power-Seeking Controller for a Solar Generation System
摘要： The intelligent balloon water gate (IBWG) invention is a hydraulic gate model made of reinforced plastic that controls the water level (WL) downstream or upstream of a barrage. The IBWG automatically in?ates and de?ates by compressed air to close and open the water passage, respectively. The whole design consists of a balloon, a waterway, sensors, an air compressor, a control panel, an electrical circuit and a photovoltaic generation (PVG) system. The Tyass barrage in Iraq was considered as a case study. The Tyass barrage was built with concrete and four sliding steel water gates and redesigned using the IBWG. The originality of the current research resides in the combination of the IBWG mechanism with an ef?cient maximum power point (MPP) seeking controller for a photovoltaic generation system, which is one of the most promising sources of renewable energy in the world. To the best of our knowledge, in this ?eld, this scenario has not yet been discussed in detail. Upper and lower water sensors are used to control the IBWG. The upper sensor sends a signal to the control panel when the downstream water level reaches its maximum value to open the air inlet valve and close the outlet valve, in?ating 14 IBWGs with a volume of 3.5 m3 under 122 psi of pressure and closing the water passage. When the WL decreases below the minimum level, the lower sensor initiates the opposite procedure. The air compressor automatically ?lls the air tank to 181 psi and is supplied by a 24 VDC AGM rechargeable battery with a capacity of 40-60 Ah, which is charged by four solar panels connected in parallel and exposed to an average of 8.8 hrs/day of sunshine. The proposed MPP-seeking controller was implemented by a backstepping design coupled with the grey wolf mechanism. The solar irradiance data were observed 39 years ago. The proposed controller is capable of following the MPP with minimum oscillations under an external irradiance variation. The IBWG system is veri?ed at night or during the early morning when the sun is not active. Nevertheless, it is possible to store compressed air in an auxiliary tank to avoid emergencies such as partial shading conditions.
关键词： PVG system,backstepping technique,lyapunov stability,grey wolf optimization,Electro-hydrodynamic rubber water gate
更新于2025-09-16 10:30:52
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A novel Lyapunov stable higher order B-spline online adaptive control paradigm of photovoltaic systems
摘要： In this paper, research on the control of photovoltaic (PV) using a novel higher order B-spline online adaptive neuro-fuzzy paradigm considering high external uncertainties in weather and load demand is presented. We optimize the existing neuro-fuzzy technique by incorporating third order B-spline membership functions in its antecedent part, which we solve using an on-line learning gradient-decent back propagation method. We fit the system parameters online through adaptive fuzzy rules extracted from the maximum power point tracking (MPPT) error and its derivative. Unlike many existing neuro-fuzzy techniques, our method addresses the trapping in local minima. The proposed controller is demonstrated to be stable using Lyapunov stability analysis. The performance of our control philosophy is checked in terms of output power tracking, efficiency, and MPPT error. Finally, we validate via simulation the high robustness and the self-adaptation ability of the proposed method over other existing traditional and intelligent techniques.
关键词： B-spline membership functions,Photovoltaic systems,Maximum power point tracking,Adaptive neuro-fuzzy control,Lyapunov stability
更新于2025-09-16 10:30:52
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[IEEE 2019 4th World Conference on Complex Systems (WCCS) - Ouarzazate, Morocco (2019.4.22-2019.4.25)] 2019 4th World Conference on Complex Systems (WCCS) - Adaptive High Gain Observer for Photovoltaic Systems
摘要： The problem of state and parameter estimation in photovoltaic (PV) systems is considered. The system is composed of a photovoltaic generator (PVG) which supplies power, via a long PV cable, to a DC centrifugal pump driven by a DC–DC boost converter. The maximum power point tracking (MPPT) techniques and controllers are generally designed based on the PVG delivered voltage and/or current measurements. From other side, PV arrays should be established in a location that pro?ts from good daily solar radiation. Such a location is, in numerous cases, remote from the converter, which obviously leads to dif?culty of PVG voltage and current measurement. Besides, the use of a long PV cable may result in MPPT control inaccuracies due to voltage drops in the cable. For remedying these issues, an adaptive observer for PV systems is proposed, in this work. It accomplishes online estimation of PVG current and voltage as well as of the unknown resistance parameter of the cable. The designed adaptive observer convergence is theoretically proved and its performances are evaluated by simulation.
关键词： PV Cable,Uncertainty,Adaptive High Gain Observer,Photovoltaic,MPPT,Lyapunov Stability
更新于2025-09-12 10:27:22