|
|
Publications
Gaspar, J. F.; Kamarlouei, M.; Sinha, A.; Xu, H. T.; Calvario, M., Francois-Xavier, Fa., Robles, E. and Guedes Soares, C. (2017), Analysis of electrical drive speed control limitations of a power take-off system for wave energy converters, Renewable Energy, Vol. 113, pp. 335-346
Oil-hydraulics is a promising technology for wave energy converters, because can support huge forces and produce hydraulic power, which can be easily moved across the power take-off system and in a compacter way. It is also appropriate for reactive control of the wave energy converter. However, one of its main components, the variable displacement oil-hydraulic pump must be operated above 80% of maximum displacement in order to have an overall efficiency of 94.5%. This is achieved by controlling its speed through a frequency controlled electrical drive attached to the pump shaft. However, this brings additional challenges to the drive when the pump is used for reactive control, because of its sudden peaks of power and flow that significantly increase the pump accelerations, which are far above the ones supported by the drive. So, the objective of this research work was to analyze the drive speed and acceleration limitations and provide solutions to operate them safely and without affecting significantly the overall efficiency of the pump.
If you did not manage to obtain a copy of this paper: Request a copy of this article
For information about all CENTEC publications you can download: Download the Complete List of CENTEC Publications
|