An Analysis of the Potential Benefits of Centralised Predictive Control for Optimal Electrical Power Generation From Wave Energy Arrays

O'Sullivan, Adrian C. M.; Sheng, Wanan; Lightbody, Gordon

doi:10.1109/tste.2018.2812749

Cited by 10 publications

(7 citation statements)

References 32 publications

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“…The AC/DC/AC converter [23], [46], [55]- [64], [47]- [54], a combination of an AC/DC converter, a DC link capacitor, or battery storage, followed by a DC/AC converter, is the most commonly used topology for WEC technologies today. This combination is due to the fact that the generator used in most WEC devices is a rotary-type generator with a fixed output frequency.…”

Section: Power Conversion Technologymentioning

confidence: 99%

“…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%

“…Based on this research, it can be summarized that the most commonly used modulation technique to control the converters is the PWM technique [23], [47], [73], [49], [51], [52], [59], [61], [69], [71], [72] with the specificity of the Space Vector Pulse Width Modulation (SVPWM) in [48], [59], [69], [70], [73]. According to the application, these modulation techniques control the switching operation of the IGBT/MOSFETs in the converter, which is responsible for generating and regulating the AC sinusoidal voltage output at the desired output frequency.…”

Section: Power Conversion Technologymentioning

confidence: 99%

“…Considering there is no definite and conclusive WEC design or hardly any commercially run wave farms supplying the grid, this technology's development is therefore vital and worth exploring further. More research has been published in recent years on WEC devices [1]- [19] power conversion [20]- [22] control strategies [23]- [27] economics, cost, reliability, and efficiency [3], [28]- [34] and grid-connected or off-grid [35]- [40].…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Power Conversion Technologymentioning

confidence: 99%

Section: Power Conversion Technologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review of Power Electronics for Nearshore Wave Energy Converter Applications

et al. 2022

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“…Although the control system improved the transient stability, the work did not discuss the effect on output power quality or the devices' power losses. Beside improving the power electronic structure, several publications targeted improving the control schemes of the WEC AC/DC/AC back-to-back converters [58][59][60][61][62][63][64][65][66][67]. In [58], a non-linear control strategy using linear quadratic regulator (LQR) techniques is proposed to improve the controllability of the WEC system.…”

Section: Generator Output Powermentioning

confidence: 99%

A Review on Power Electronic Topologies and Control for Wave Energy Converters

Darwish

Aggidis

2022

Energies

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Ocean energy systems (OESs) convert the kinetic, potential, and thermal energy from oceans and seas to electricity. These systems are broadly classified into tidal, wave, thermal, and current marine systems. If fully utilized, the OESs can supply the planet with the required electricity demand as they are capable of generating approximately 2 TW of energy. The wave energy converter (WEC) systems capture the kinetic and potential energy in the waves using suitable mechanical energy capturers such as turbines and paddles. The energy density in the ocean waves is in the range of tens of kilowatts per square meter, which makes them a very attractive energy source due to the high predictability and low variability when compared with other renewable sources. Because the final objective of any renewable energy source (RES), including the WECs, is to produce electricity, the energy capturer of the WEC systems is coupled with an electrical generator, which is controlled then by power electronic converters to generate the electrical power and inject the output current into the utility AC grid. The power electronic converters used in other RESs such as photovoltaics and wind systems have been progressing significantly in the last decade, which improved the energy harvesting process, which can benefit the WECs. In this context, this paper reviews the main power converter architectures used in the present WEC systems to aid in the development of these systems and provide a useful background for researchers in this area.

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