Basic study on maximization of the power take off efficiency of oscillating body type wave energy converters.

振荡体式波浪能转换器动力输出效率最大化的基础研究

• 批准号: 23560966
• 负责人: ISEKI Toshio
• 金额: $ 3.41万
• 依托单位: Tokyo University of Marine Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560966/
• 关键词: 波力発電; 浮体動揺; パラメトリック共振; マシュー型不安定; スパー型ブイ; マシュー不安定; 方向スペクトル; ベイズ推定; ウェーブレット; 浮体運動

The objective of this study is maximization of the power take off efficiency of oscillating body type wave energy converters. This study consists of three kinds of research. The first one is improvement of the Bayesian modelling that estimates the sea state by analyzing the oscillation of the body. Specifically, errors in response functions were taken into the Bayesian modelling and the discrete wavelet transform was introduced. The second research is development of a dynamic oscillation controlling system of a spar-buoy type point absorber. The natural frequency of the heaving motion is controlled by axial-sliding valves. The third research is utilization of the auto-parametrically excited oscillation for the dynamic controlling system. Based on the numerical simulations in time domain, the possibility of utilization of auto-parametrically excited oscillation in irregular waves was shown. Therefore, it can be recognized that the objectives of this study have been achieved.

本研究的目的是最大化振荡体型波能转换器的功率输出效率。本研究包括三种类型的研究。第一种是对贝叶斯模型的改进，该模型通过分析物体的振动来估计海况。具体地说，将响应函数中的误差引入贝叶斯建模，并引入离散小波变换。研究二是研制了单点浮标式吸振器的动态振动控制系统。升沉运动的固有频率由轴向滑动阀控制。第三部分研究了自参激振动在动力控制系统中的应用。在时间域数值模拟的基础上，论证了在不规则波中利用自参激振动的可能性。因此，可以肯定的是，本研究的目标已经实现。

项目成果

An Improved Stochastic Modeling for Bayesian Wave Estimation

贝叶斯波估计的改进随机模型

• 发表时间: 2012
• 期刊: Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE2012-83740
• 作者: Iwao Nakano;Hiroshi Ishida and Ichiro Deguchi;Toshio Iseki
• 通讯作者: Toshio Iseki

Mitsunori Baba and Keiich Hirayama, Application of Bayesian Wave Estimation to Actual Merchant Vessels

Mitsunori Baba 和 Keiich Hirayyama，贝叶斯波估计在实际商船中的应用

• 发表时间: 2012
• 期刊: The Proceedings of The Twenty-second (2012) International Offshore and Polar Engineering Conference (ISOPE2012)
• 作者: Tokihiro Katsui;Masanari Akashi;Satoshi Kajikawa;Tomoya Inoue;居駒知樹，増田光一，仲村泰徳，林昌奎;Toshio Iseki
• 通讯作者: Toshio Iseki

Optimization Method for Oscillation Characteristics of a Spar-buoy

柱式浮标振荡特性的优化方法

• 发表时间: 2014
• 期刊: Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
• 作者: 永松孝規;山本茂広;コチャックガジ;橋本岳;Ｔｏｓｈｉｏ Ｉｓｅｋｉ
• 通讯作者: Ｔｏｓｈｉｏ Ｉｓｅｋｉ

Application of Discrete Wavelet Transform to Ship Motion Analysis

离散小波变换在船舶运动分析中的应用

• 发表时间: 2013
• 期刊: Proceedings of Asia Navigation Conference 2013(ANC2013)
• 作者: H. Kato;H. Saito;S. Sakai;Byung Ho Kang and Toshio Iseki
• 通讯作者: Byung Ho Kang and Toshio Iseki

Study on Bayesian Wave Estimation for Actual Merchant Vessels

实际商船贝叶斯波浪估计研究

• 发表时间: 2012
• 期刊: Proceedings of 14th IAIN Congress 2012, International Association of Institute of Navigation
• 作者: Toshio Iseki;Mitsunori Baba and Keiich Hirayama
• 通讯作者: Mitsunori Baba and Keiich Hirayama