Fuzzy Gain Scheduled-Sliding Mode Rotational Speed Control of an Oscillating Water Column

M’zoughi, Fares; Garrido, Izaskun; Garrido, Aitor J.; Sen, Manuel De la

doi:10.1109/access.2020.2978147

Cited by 17 publications

(15 citation statements)

References 54 publications

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“…These WEC research used different power electronics converters according to their applications. In [23], [46], [57]- [66], [47], [67]- [70], [48]- [50], [52]- [54], [56] a three-phase AC/DC/AC converter is used to dispatch power to the grid, and in [23], an active DC/AC converter is used as the control element. In [60], a single-phase AC/DC/AC converter is used.…”

Section: Power Conversion Technologymentioning

confidence: 99%

A Review of Power Electronics for Nearshore Wave Energy Converter Applications

et al. 2022

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In compliance with the green energy policy, mitigation from high fossil fuel dependency is becoming a new objective for most countries, including Malaysia. Wave energy is among extensively explored renewable energy relatively clean, sustainable, and inexhaustible resources. To this day, neither definite wave energy technology nor widely available commercial wave farm supplying the grid has existed. Therefore, wave energy harvesting is the most compelling solution, especially in regions where the possibility of grid connection is low in the nearest future. Like other renewable energy, the voltage amplitude and frequency generated from waves are unstable and may vary continuously. This uncertainty has created energy transfer challenges since the grid requires a stable and uninterrupted energy supply. Therefore, power electronics devices are employed to modulate the controller circuits' pulse width. Further understanding of the relationship between wave energy conversion technology and its power conversion, particularly for nearshore applications, is summarized. This work also discussed selected wave energy conversion research and power conversion system implemented and studied in Malaysia. Finally, this review can provide extensive overview and broad understanding into power conversion system for Wave Energy Conversion, especially for nearshore applications.

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Section: Power Conversion Technologymentioning

confidence: 99%

A Review of Power Electronics for Nearshore Wave Energy Converter Applications

et al. 2022

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“…The air volume in the capture chamber of the oscillating water column is defined from the chamber's volume and the water volume as [20][21][22]:…”

Section: Capture Chamber Modelmentioning

confidence: 99%

“…where V c , w c and l c are respectively the capture chamber's volume, inner width and length. The volume flow rate can be defined from Equation ( 3) by [20][21][22]:…”

Section: Capture Chamber Modelmentioning

confidence: 99%

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Rotational Speed Control Using ANN-Based MPPT for OWC Based on Surface Elevation Measurements

M’zoughi

Garrido

et al. 2020

Applied Sciences

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This paper presents an ANN-based rotational speed control to avoid the stalling behavior in Oscillating Water Columns composed of a Doubly Fed Induction Generator driven by a Wells turbine. This control strategy uses rotational speed reference provided by an ANN-based Maximum Power Point Tracking. The ANN-based MPPT predicts the optimal rotational speed reference from wave amplitude and period. The neural network has been trained and uses wave surface elevation measurements gathered by an acoustic Doppler current profiler. The implemented ANN-based rotational speed control has been tested with two different wave conditions and results prove the effectiveness of avoiding the stall effect which improved the power generation.

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“…An alternative approach is to supplement the existing controllers with an add-on controller to enhance its performance under abnormal circumstances. Examples of such control approaches in the literature are adaptive gain adjustments of controllers using methods such as fuzzy logic [39][40][41] or more recently machine learning (also referred to as data-driven or artificial intelligence methods) [42,43]. Although such approaches are supplementary to the existing controllers, modification of the gain/parameters requires access to the internal control itself.…”

Section: Introductionmentioning

confidence: 99%

Facilitating the Transition to an Inverter Dominated Power System: Experimental Evaluation of a Non-Intrusive Add-On Predictive Controller

et al. 2020

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The transition to an inverter-dominated power system is expected with the large-scale integration of distributed energy resources (DER). To improve the dynamic response of DERs already installed within such a system, a non-intrusive add-on controller referred to as SPAACE (set point automatic adjustment with correction enabled), has been proposed in the literature. Extensive simulation-based analysis and supporting mathematical foundations have helped establish its theoretical prevalence. This paper establishes the practical real-world relevance of SPAACE via a rigorous performance evaluation utilizing a high fidelity hardware-in-the-loop systems test bed. A comprehensive methodological approach to the evaluation with several practical measures has been undertaken and the performance of SPAACE subject to representative scenarios assessed. With the evaluation undertaken, the fundamental hypothesis of SPAACE for real-world applications has been proven, i.e., improvements in dynamic performance can be achieved without access to the internal controller. Furthermore, based on the quantitative analysis, observations, and recommendations are reported. These provide guidance for future potential users of the approach in their efforts to accelerate the transition to an inverter-dominated power system.

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Fuzzy Gain Scheduled-Sliding Mode Rotational Speed Control of an Oscillating Water Column

Cited by 17 publications

References 54 publications

A Review of Power Electronics for Nearshore Wave Energy Converter Applications

A Review of Power Electronics for Nearshore Wave Energy Converter Applications

Rotational Speed Control Using ANN-Based MPPT for OWC Based on Surface Elevation Measurements

Facilitating the Transition to an Inverter Dominated Power System: Experimental Evaluation of a Non-Intrusive Add-On Predictive Controller

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