Maximum Power Point Tracking for Ocean Wave Energy Conversion

Amon, Ean; Brekken, Ted K. A.; Schacher, Al

doi:10.1109/tia.2012.2190255

Cited by 75 publications

(41 citation statements)

References 17 publications

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“…Hala ere, turbinaren abiadura kontrolatuta [21][22] efektu hau saihesteaz gain posible da sistema modu eraginkorragoan ere kudeatzea. Jarraian emango dira bi kontrol mota hauen xehetasunak.…”

Section: Kontrol Sistemaunclassified

Mutrikuko olatu zentralaren azterketa eta potentzia maximoko puntuaren jarraipena

Garagarza

Hernández²,

Hernández³

2017

EKAIA

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Laburpena: Susperraldian dauden energia iturri berriztagarri berriak berebiziko garrantzia izatera iritsi dira gaur egungo gizartean. Petrolioarekiko menpekotasuna eta berotegi efektua direla medio, energia lortzeko bide berriak miatu beharra nabarmendu da. Ozeanoek eta itsasoek energia kantite handia pilatzen dute bere baitan. Hala ere, gizakia oraindik ez da gai izan energia honetaz egokiro baliatzeko. Ur-zutabe oszilatzailean oinarritutako metodoa da gaur egun itsasotik energia ateratzeko sistema guztien artetik gehien ikertuenetako bat. Alabaina, lorturiko efizientzia baxuek zaildu egiten dute teknologia honen erabilera. Gaur egungo kontrol-metodo berriek, aldiz, efizientzia hau hobetzea ahalbidetzen dute. Metodo hauen artean badago potentzia maximoko puntuaren jarraipena, batez ere energia eolikoan asko erabilia. Hitz-gakoak: olatu-energia, ur-zutabe oszilatzailea (OWC), potentzia maximoko puntuaren jarraipena (MPPT).Abstract: New emerging renewable energy sources are reaching a vital importance in the actual society. Novel ways of energy harnessing must be explored to overcome fuel dependency and the global warming. There is a huge amount of energy to be obtained from oceans and seas. However, the human being has not been able to harness this energy properly. Oscillating Water Column-based (OWC) method is at present one of the most studied techniques among the ocean energy systems. Nonetheless, low efficiencies in energy conversion hinder the success of this technology. The recent control methods allow to improve this efficiency. Among these methods the Maximum Power Point Tracking (MPPT) strategy can be found, which is extensively used in wind energy.

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Section: Kontrol Sistemaunclassified

Mutrikuko olatu zentralaren azterketa eta potentzia maximoko puntuaren jarraipena

Garagarza

Hernández²,

Hernández³

2017

EKAIA

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“…whereĈ W k is the estimate of the mean OWC capture width at sample k. Both the discrete MPPT and MCWT algorithms have two independent degrees of freedom; the update rate and the step size (Amon et al, 2009(Amon et al, , 2012. The update rate controls the rate at which the controller responds to changes in the mean power/ capture width estimate, and hence changes in incident wave conditions.…”

Section: Maximum Power Point/capture Width Tracking Algorithmsmentioning

confidence: 99%

“…Maximum power point tracking (MPPT), a gradient-ascent type method commonly used in wind and solar energy converters, has been investigated for adaptive PTO control in a WEC (Amon et al, 2009(Amon et al, , 2012, where the load resistance of a linear generator was tuned by varying the duty cycle of a buck converter. The investigation considered a surface following WEC, effectively neglecting hydrodynamics, and focused on the effects of varying the update rate and step size of the MPPT algorithm on the average power output for a single sea state.…”

Section: Introductionmentioning

confidence: 99%

A maximum capture width tracking controller for ocean wave energy converters in irregular waves

et al. 2016

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“…However, the ratings of the back-to-back converter need to be increased without increase in the active power generation. Recently, the Maximum Power Point Tracking (MPPT) method of "perturb and observe" (P&O) used for solar system has been adapted to WECS [13]. The advantage of the P&O technique is its low computational burden.…”

Section: Introductionmentioning

confidence: 99%

MPPT strategy based on speed control for AWS-based wave energy conversion system

2015

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a b s t r a c tOne of the attractive direct-drive wave energy conversion systems is the Archimedes Wave Swing (AWS) coupled to a Linear Permanent Magnet Synchronous Generator (LPMSG). This paper presents an integrated control strategy for the back-to-back converter interfacing the LPMSG not only to extract the maximum power from the wave, but also to ride-through the fault. The proposed maximum power tracking technique is based on speed sensorless control of the LPMSG. The unscented Kalman filter is adapted to estimate the translator velocity. The optimal velocity is obtained from the instantaneous active power at the generator terminals. Moreover, a low-voltage ride-through control is integrated to satisfy the grid-code requirements by injecting reactive current during grid disturbances. The generated active power at the fault instant is considered in determining the dynamic reactive power injection to not exceed the ratings of the grid-side converter. The superiority of the proposed strategy is the result of its ability to regulate the translator velocity that generates optimum power. Numerical simulations are conducted to evaluate the dynamic performance of the proposed integrated optimal strategy. Besides, it has been shown that the proposed methodology outdoes others by the decreased power fluctuations which leads to a reduction of the converter size.

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Maximum Power Point Tracking for Ocean Wave Energy Conversion

Cited by 75 publications

References 17 publications

Mutrikuko olatu zentralaren azterketa eta potentzia maximoko puntuaren jarraipena

Mutrikuko olatu zentralaren azterketa eta potentzia maximoko puntuaren jarraipena

A maximum capture width tracking controller for ocean wave energy converters in irregular waves

MPPT strategy based on speed control for AWS-based wave energy conversion system

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