Variable speed control in wells turbine-based oscillating water column devices: optimum rotational speed

2017 6th International Conference on Power Science and Engineering

Lekube, J.^1 ; Garrido, A.J.^1 ; Garrido, I.^1

Automatic Control Group (ACG), Institute of Research and Development of Processes (IIDP), Department of Automatic Control and Systems Engineering, Bilbao, Spain^1

关键词: Alternative source;    Conventional power plants;    Conversion systems;    Efficiency improvement;    Feasible solution;    Oscillating water column devices;    Variable speed control;    Wave energy power plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/136/1/012017/pdf
DOI  :  10.1088/1755-1315/136/1/012017

来源: IOP

【 摘 要 】

The effects of climate change and global warming reveal the need to find alternative sources of clean energy. In this sense, wave energy power plants, and in particular Oscillating Water Column (OWC) devices, offer a huge potential of energy harnessing. Nevertheless, the conversion systems have not reached a commercially mature stage yet so as to compete with conventional power plants. At this point, the use of new control methods over the existing technology arises as a doable way to improve the efficiency of the system. Due to the non-uniform response that the turbine shows to the rotational speed variation, the speed control of the turbo-generator may offer a feasible solution for efficiency improvement during the energy conversion. In this context, a novel speed control approach for OWC systems is presented in this paper, demonstrating its goodness and affording promising results when particularized to the Mutriku's wave power plant.