Chapter 2

Frequency-Domain Models

M. Alves    WavEC - Offshore Renewables, Lisbon, Portugal

Abstract

This chapter discusses the frequency-domain modelling approach to model wave energy converters (WECs), and presents its advantages and limitations. It is shown that frequency-domain modelling requires the linearization of the forces acting on the WEC. This simplification is acceptable for waves and small-amplitude device oscillatory motions and whenever the mooring system can be modelled by a linear spring and the power take-off (PTO) using either a linear damper or a linear spring-damper system. Under these circumstances, the first step to model WECs is typically based on a frequency-domain approach, where the excitation is assumed to be ...

Get Numerical Modelling of Wave Energy Converters now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.