NON-LINEAR SIMULATION OF A WAVE ENERGY CONVERTER WITH MULTIPLE DEGREES OF FREEDOM USING A HARMONIC BALANCE METHOD

被引：0

作者：

Novo, Riccardo ^{[1
]}

Bracco, Giovanni ^{[1
]}

Sirigu, Sergej A. ^{[1
]}

Mattiazzo, Giuliana ^{[1
]}

Merigaud, Alexis ^{[2
]}

Ringwood, John V. ^{[2
]}

机构：

[1] Politecn Torino, Dipartimento Ingn Meccan & Aerosp, Cso Duca Abruzzi 24, I-10129 Turin, Italy

[2] Maynooth Univ, Ctr Ocean Energy Res, Dept Elect Engn, Maynooth, Kildare, Ireland

来源：

PROCEEDINGS OF THE ASME 37TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2018, VOL 10 | 2018年

基金：

爱尔兰科学基金会;

关键词：

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Computationally efficient simulation methods for wave energy converters (WECs) are useful in a variety of applications. The simulation task is particularly challenging when nonlinearities are present in the WEC model. Using a Fourier projection of the system inputs and variables, harmonic balance (HB) is a computationally-efficient method to solve for the steady-state motion of a non-linear system, preserving an accurate representation of the non-linear effects. In previous work, HB has been used for the simulation of WECs with one degree of freedom (DoF). Here, HB is presented for WEC systems with an arbitrary number of DoFs. A non-linear, 2-DoF model of the ISWEC wave energy device is used as an example of application. The HB implementation of the ISWEC model is described in detail. Through numerical applications, chosen in both regular and irregular waves, general features of the HB method are exemplified, in particular the exponential convergence rate to the actual mathematical solution, and the sensitivity, in some cases, to the starting point of the HB algoritm.

引用

页数：10

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