Abstract
Recently, electrical power generation from oceanic waves is becoming very popular, as it is prospective, predictable, and highly available compared to other conventional renewable energy resources. In this paper, various types of nearshore, onshore, and offshore wave energy devices, including their construction and working principle, are explained explicitly. They include point absorber, overtopping devices, oscillating water column, attenuators, oscillating wave surge converters, submerged pressure differential, rotating mass, and bulge wave converter devices. The encounters and obstacles of electrical power generation from the oceanic wave are discussed in detail. The electrical power generation methods of the generators involved in wave energy devices are depicted. In addition, the vital control technologies in wave energy converters and devices are described for different cases. At present, piezoelectric materials are also being implemented in the design of wave energy converters as they convert mechanical motion directly into electrical power. For this reason, various models of piezoelectric material-based wave energy devices are illustrated. The statistical reports and extensive literature survey presented in this review show that there is huge potential for oceanic wave energy. Therefore, it is a highly prospective branch of renewable energy, which would play a significant role in the near future.
Highlights
The consumption of electrical power is growing rapidly all over the world due to the increase of human population and technological development
The improvement of the wave energy converters (WECs) control systems employed in various types of wave energy devices (WEDs) have become a special interest in the research field of oceanic wave energy (OWE) engineering [14]
The total wave power resource in the world is equivalent to 1 TW, with the possibility of around 2000 TWh energy production yearly [34]; which is equal to the energy that is produced by hydropower or nuclear in 2006 [35]
Summary
The consumption of electrical power is growing rapidly all over the world due to the increase of human population and technological development. The improvement of the WEC control systems employed in various types of wave energy devices (WEDs) have become a special interest in the research field of OWE engineering [14]. Some of these control methodologies are analyzed considering linear quadrature Gaussian design topology, adaptive inertia, adjustable tuning, reactive control, and latching control techniques. This paper addresses almost all the key facts regarding wave energy conversion It presents various principles of energy conversion methods including rotating machinery and linear electrical generator, which are operated by electromagnetic induction.
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