10.5281/zenodo.5537289
https://zenodo.org/records/5537289
oai:zenodo.org:5537289
Blanco, Marcos
Marcos
Blanco
CIEMAT
Santos-Herrán, Marcos
Marcos
Santos-Herrán
CIEMAT
Navarro, Gustavo
Gustavo
Navarro
CIEMAT
Torres, Jorge
Jorge
Torres
CIEMAT
Najera, Jorge
Jorge
Najera
CIEMAT
García-Tabarés, Luis
Luis
García-Tabarés
CIEMAT
Lafoz, Marcos
Marcos
Lafoz
CIEMAT
Simplified model of a novel direct-drive PTO based on an azimuthal linear switched reluctance generator
Zenodo
2021
power-take-off, PTO
2021-09-29
10.5281/zenodo.5537288
https://zenodo.org/communities/eu
Creative Commons Attribution 4.0 International
One of the key challenges in wave energy conversion is the improvement of the Power Take-Off (PTO) system. The paper is based on a novel linear switched reluctance generator (LSRG) to be used as PTO. This new azimuthal topology of a LSRG improves the force density and reduces the use of magnetic material - hence, reducing its cost. This new LSRG has been analysed in detail, optimising the control parameters and evaluating the efficiency, power, and force maps. A detailed PTO model is used, which includes a detailed electric machine model, a power electronics converter model and low-level control algorithms. This paper presents a methodology for using these maps to define a simplified PTO model version. This simplified model is a PTO-loss model which provides the electric power from the instantaneous velocity and force. A comparison between the results obtained with the simplified and detailed PTO models is performed, in terms of accuracy and computational load. From this analysis, the PTO-loss model is considered adequate to be used in Wave to Wire models due to its low computational cost. The presented methodology will be applied to the development of the azimuthal LSRG to derive its simplified model from real data obtained by characterisation tests. However, it can be used in a broader way to obtain simplified models of any PTO from either detailed models or real data
European Commission
10.13039/501100000780
764014
SEA-TITAN: Surging Energy Absorption Through Increasing Thrust And efficieNcy