Experimental investigation of a Multi-OWC wind turbine floating platform

Fenu, Beatrice; Bonfanti, Mauro; Bardazzi, Andrea; Pilloton, C.; Lucarelli, Alessia; Mattiazzo, Giuliana

doi:10.1016/j.oceaneng.2023.114619

Cited by 17 publications

(3 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…if PI (11) in which {k θ , k p , k i } ⊂ R 2×2 are control parameters matrices relative to controller structures exposed in (11). Once the optimal controller response (which, according to the associated impedance-matching energy maximizing problem, can be computed as K opt fb = G − * ε ) is defined, the controller structure K fb can be matched with the associated optimality conditions K opt fb on a suitably chosen frequency.…”

Section: B Wave To Gyromentioning

confidence: 99%

“…Furthermore, the scaling of a device limits the applicability and the use of the corresponding energy-harvesting mechanism, since on a small scale, especially the friction-related phenomena are predominant [9] and the response of a mechanism can be nonrepresentative. Hence, mostly, wave energy systems are generally scaled and analyzed experimentally by omitting, or simplifying, the corresponding mechanism [10], [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Numerical Investigation on the Performance of a Moored Pitching Wave Energy Conversion System

Paduano,

Carapellese,

Pasta

et al. 2024

IEEE J. Oceanic Eng.

View full text Add to dashboard Cite

This study delves into the question of whether the mooring system influences the dynamics of the device by conducting a comprehensive analysis of the inertial sea wave energy converter (ISWEC). Recognizing that wave energy converters exhibit complex behaviors that often push numerical models beyond their range of validity, this study highlights the importance of developing a representative model that accurately captures the intricate dynamics involved. To address this challenge, an experimental investigation of the ISWEC is conducted, aiming to establish a benchmark model that serves as a reference for validating and refining numerical models. Following the experimental investigation, this study proceeds with a numerical investigation to further explore the influence of the mooring system on the pitching device. The response of the device is analyzed both with and without the mooring system, allowing for a direct comparison of its effects on device dynamics and the associated harvested energy. By conducting numerical simulations under various operating conditions, this study provides an insight into the definition of representative mathematical modeling, analyzing and motivating the strong influence of the mooring system on the performances of a moored pitching wave energy conversion system.

show abstract

Section: B Wave To Gyromentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation on the Performance of a Moored Pitching Wave Energy Conversion System

Paduano,

Carapellese,

Pasta

et al. 2024

IEEE J. Oceanic Eng.

View full text Add to dashboard Cite

show abstract

“…To date, within the realm of wave energy conversion, the literature on robust optimization has predominantly focused on the development of robust control frameworks [10][11][12][13][14][15][16][17]. Furthermore, concerning the study of wave energy and WEC uncertainties, the existing literature primarily covers environmental [18][19][20][21][22] and full/high-scale prototyping or experimental uncertainties and subsystems' influence on performance [23][24][25][26][27][28][29]. The neighboring Reliability-Based Design Optimization (RBDO) field of research directs its attention to WEC structural and maintenance cost uncertainties [30] (in which the so-called Wavestar device is considered as a case study) and the power take-off (PTO) reliability relationship with hull geometry [31].…”

Section: Introductionmentioning

confidence: 99%

Measuring the Robustness of Optimal Design Solutions for Wave Energy Converters via a Stochastic Approach

Giorcelli,

Sirigu,

Giorgi

et al. 2024

JMSE

Self Cite

View full text Add to dashboard Cite

Among the challenges generated by the global climate crisis, a significant concern is the constant increase in energy demand. This leads to the need to ensure that any novel energy systems are not only renewable but also reliable in their performance. A viable solution to increase the available renewable energy mix involves tapping into the potential available in ocean waves and harvesting it via so-called wave energy converters (WECs). In this context, a relevant engineering problem relates to finding WEC design solutions that are not only optimal in terms of energy extraction but also exhibit robust behavior in spite of the harsh marine environment. Indeed, the vast majority of design optimization studies available in the state-of-the-art consider only perfect knowledge of nominal (idealized) conditions, neglecting the impact of uncertainties. This study aims to investigate the information that different robustness metrics can provide to designers regarding optimal WEC design solutions under uncertainty. The applied methodology is based on stochastic uncertainty propagation via a Monte Carlo simulation, exploiting a meta-model to reduce the computational burden. The analysis is conducted over a dataset obtained with a genetic algorithm-based optimization process for nominal WEC design. The results reveal a significant deviation in terms of robustness between the nominal Pareto set and those generated by setting different thresholds for robustness metrics, as well as between devices belonging to the same nominal Pareto frontier. This study elucidates the intrinsic need for incorporating robust optimization processes in WEC design.

show abstract

Summary and Outlook

Wang

2023

Ocean Engineering &Amp; Oceanography

View full text Add to dashboard Cite

Experimental investigation of a Multi-OWC wind turbine floating platform

Cited by 17 publications

References 35 publications

Experimental and Numerical Investigation on the Performance of a Moored Pitching Wave Energy Conversion System

Experimental and Numerical Investigation on the Performance of a Moored Pitching Wave Energy Conversion System

Measuring the Robustness of Optimal Design Solutions for Wave Energy Converters via a Stochastic Approach

Summary and Outlook

Contact Info

Product

Resources

About