Reliability of Marine Energy Converters

Val, Dimitri V.

doi:10.3390/en16083387

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…thus reducing the average generated power until it reaches zero. This is noticeable in Figures [11][12][13][14], which present the mean power vs. the GR for generators G1 and G2 under different conditions of wave period and height. It is also noticeable that a higher incident power (i.e., higher 𝐻 and lower 𝑇 ) leads to a lower critical value of GR.…”

Section: Wec Performance: Influence Of Key Parametersmentioning

confidence: 91%

“…The last two parameters are obtained in Figure 6. The viscous damping force F v is calculated based on the drag force described in [41], but rewritten according to [42], see Equation (14).…”

Section: Dynamic Model Of the Wecmentioning

confidence: 99%

“…The value of the drag coefficient C d assumed in this study is 1.85; the drag coefficient of the point absorber considered has been calculated by [20]. The viscous damping force 𝐹 is calculated based on the drag force described in [41], but rewritten according to [42], see Equation (14).…”

Section: Dynamic Model Of the Wecmentioning

confidence: 99%

“…Due to its small size, low complexity and low cost, the point absorber is the most studied WEC type [10][11][12][13]. The accessibility of these devices is important for maintenance and repair, as environmental conditions can make this task difficult [14]. For this reason, WECs based on a point absorber connected to shore via an articulated arm are generating much interest due to their easy installation and maintenance [15].…”

Section: Introductionmentioning

confidence: 99%

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Study of a New Wave Energy Converter with Perturb and Observe Maximum Power Point Tracking Method

2023

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Ocean waves contain the highest energy density among renewable energy sources. However, harnessing the energy from ocean waves represents a challenge because wave energy converters (WECs) must be designed to have great survivability and efficiency. The power production challenge of any WEC depends on the power take-off (PTO) system efficiency. Maximum power point tracking (MPPT) algorithms have been widely applied in renewable energy from photovoltaic and wind sources, and have subsequently been adapted to wave energy converters (WECs). Energy extraction is optimized by applying MPPT, resulting in an increase in efficiency. This study aims to address the analysis of the influence of the perturb and observe MPPT in the electrical power performance of a WEC composed of a point absorber, a hinged arm and a direct mechanical drive PTO system. The PTO is characterized by a pulley system, a counterweight, one-way bearings, a gearbox, a flywheel and an electric generator; in the present study it is considered to be a cylindrical point absorber. The linear theory and the viscous damping effect are applied to analyze the hydrodynamic behavior of the point absorber. Regarding the two generators considered in the present study, the contribution of MPPT is greater for the low power generator; the high values of the capture width ratio (CWR) occur at low values of period and wave height, showing the maximum value in the high-power generator.

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Section: Wec Performance: Influence Of Key Parametersmentioning

confidence: 91%

Section: Dynamic Model Of the Wecmentioning

confidence: 99%

Section: Dynamic Model Of the Wecmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of a New Wave Energy Converter with Perturb and Observe Maximum Power Point Tracking Method

2023

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“…Although marine energy converters come in a wide variety, they can be d using IEC TS 62600-2:2019. Providing an appropriate level of protection against ards that could cause catastrophic failure in the structural, mechanical, electrica trol systems of the energy converter is its purpose [48,49]. Although marine energy converters come in a wide variety, they can be designed using IEC TS 62600-2:2019.…”

Section: Wecs Operation and Technologymentioning

confidence: 99%

Fault Diagnosis and Condition Monitoring in Wave Energy Converters: A Review

Mortazavizadeh,

Yazdanpanah,

Gaona

et al. 2023

Energies

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The technology used in wave energy conversion systems is still in the early stages of research and development. There are a number of challenges associated with becoming a commercially viable source of renewable energy due to the high operating and maintenance (O&M) costs. A potential solution for increasing the availability of wave energy converters (WECs) and reducing operating and maintenance costs might involve the implementation of condition monitoring and fault-tolerant control systems, because in some reported WEC systems, 57% of total operational expenses go to maintenance activities. The use of condition monitoring techniques in wind energy systems has, for instance, shown the ability to detect failures months in advance, resulting in savings of 15–20% during the operational phase. This paper reviews the methods proposed (and some used) by researchers to monitor WEC’s condition and diagnose faults. Fault-tolerant control methods developed to improve the reliability of WECs and hence their commercial viability are also reviewed and discussed. In addition, a future research plan is provided here.

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Magnetic-field-assisted triboelectric nanogenerator for harvesting multi-directional wave energy

Ding,

Wang,

Zhao

et al. 2024

Nano Res.

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Reliability of Marine Energy Converters

Abstract: The oceans cover 71% of Earth’s surface and are an enormous source of renewable energy which comes from tides, waves, ocean currents, and salinity and temperature differences [...]

Cited by 3 publications

References 11 publications

Study of a New Wave Energy Converter with Perturb and Observe Maximum Power Point Tracking Method

Study of a New Wave Energy Converter with Perturb and Observe Maximum Power Point Tracking Method

Fault Diagnosis and Condition Monitoring in Wave Energy Converters: A Review

Magnetic-field-assisted triboelectric nanogenerator for harvesting multi-directional wave energy

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