دانلود رایگان مقاله انگلیسی یک مطالعه پارامتری و بهینه سازی دو مبدل انرژی موج حجمی - الزویر 2019

Abstract

This paper studies the multidisciplinary nature of two body wave energy converters by a parametric study based on the Taguchi method which helps to understand the effect of different dependent parameters on the wave energy conversion performance. Seven different parameters are analyzed and their effect on the maximum captured power, resonance frequency and bandwidth is studied. An interesting comparison between a cylindrical submerged body and a spherical one was made in terms of the system’s viscous damping and hydrodynamics. The best system parameter combinations based on the maximum output power, best resonant frequency and frequency bandwidth were identified from the outcomes of the Taguchi method and optimized to capture the maximum power to operate in the specific (Australian) sea regions where the waves’ frequencies are relatively low. This paper should provide a guideline for designers to tune their parameters based on the desired performance and sea state.

6. Conclusion

This paper identified the problem of the multidisciplinary nature of wave energy converters. A parametric study was conducted to investigate the effect of the system parameters on the wave energy conversion performance of the heaving point absorber with a submerged body based on the Taguchi method. The parametric study was used to identify the best combination of parameters in a system to deliver the best output performance. The output performance attributes studied were: the maximum absorbed average power, the resonant frequency and the bandwidth of the system. One important aspect looked at was the shape of the submerged body which was altered between a cylinder and a sphere. A cylindrical shape presents excellent hydrodynamic properties with high added mass and radiating capabilities which results in high system inertia and should perform well at low frequencies but it has high viscous damping compared to the spherical shape, which results in a lower absorbed power. Even though the spherical submerged body has less added mass and radiating capabilities, it can capture more power with the low viscous damping. Therefore a study was made to determine the best system in terms of both operational frequency range and captured power.