Publication Type:

Journal Article


IET Renewable Power Generation, Volume 7, Number 5, p.574-581 (2013)



Computer simulation, Energy from ocean waves, Generator dynamic, Generator modeling, Instantaneous power, Linear permanent magnet generators, Mathematical expressions, Saturation effects, Simulation model, Water waves, Wave energy conversion, Wave power


This study presents the dynamic modelling of a linear permanent magnet generator for extracting energy from ocean waves. Translator position, calculated from measured generator voltage, is used as input for the simulation model. Instantaneous power from the simulation model has been compared with the measurements from the Lysekil research site. The power output from the model considering the air gap flux variation is precisely matching with the measured values before core saturation. The generator dynamic model is modified by including the saturation effect. Although a simple mathematical expression is considered for representing the saturation, the model gives accurate power spectrum close to the experimental results. The presented model is a first step towards the system model that can simulate the entire electric system including electric grid. As such, the generator model can be used for further analysis of the wave energy conversion system. © The Institution of Engineering and Technology 2013.


cited By (since 1996)0

Cite this Research Publication

Ra Krishna, Svensson, Oa, Rahm, Ma, Kottayil, S. Kb, Waters, Ra, and Leijon, Ma, “Analysis of linear wave power generator model with real sea experimental results”, IET Renewable Power Generation, vol. 7, pp. 574-581, 2013.