Study on Dynamic Response Characteristics of Offshore Floating Wind Turbine Pitch System

Q3 Engineering

EAI Endorsed Transactions on Energy Web Pub Date : 2024-04-16 DOI:10.4108/ew.5800

Xin Guan, Shiwei Wu, Mingyang Li, Yuqi Xie

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引用次数: 0

Abstract

Due to its special working conditions, offshore wind turbine will bear large direct and indirect loads under the combined action of air flow and wave flow. In this paper, a variable pitch system composed of variablepitch motorand variable pitch bearing is improved, and the characteristics of system's bending moment, torque, vibration and other physical quantities under the action of multiple physical loads are verified, and the mechanical response characteristics of floating wind turbine under the control of unified variable pitch and independent variable pitch are studied under the running conditions at sea. The results show that mechanical structure of uniform pitch is compared with that of independent pitch, the independent variable pitch structure can effectively reduce the mean oscillation value of wind turbine tower in the parallel direction of air flow by optimizing control strategy, and reduce the thrust at the hub of wind turbine and the bending moment at the root of tower, but increase the vibration frequency and fatigue load of offshore wind turbine tower along parallel direction of air flow. Reduce the fatigue life of equipment. The research results can be used as a reference to reduce the variable pitch control and vibration suppression of offshore wind turbines and improve the reliability of wind turbines.

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海上浮动风力涡轮机变桨系统的动态响应特性研究

海上风电机组由于其特殊的工况条件，在气流和波流的共同作用下，将承受较大的直接和间接载荷。本文改进了由变桨距电机和变桨距轴承组成的变桨距系统，验证了系统在多种物理载荷作用下的弯矩、转矩、振动等物理量特性，研究了统一变桨距和独立变桨距控制下浮式风力发电机在海上运行条件下的机械响应特性。结果表明，统一变桨距的力学结构与独立变桨距的力学结构相比，独立变桨距结构通过优化控制策略，可有效降低风电塔筒在气流平行方向上的平均振荡值，减小风电机组轮毂处的推力和塔筒根部的弯矩，但增加了海上风电塔筒沿气流平行方向的振动频率和疲劳载荷。降低设备的疲劳寿命。研究成果可为降低海上风电机组变桨距控制和振动抑制、提高风电机组可靠性提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

EAI Endorsed Transactions on Energy Web Energy-Energy Engineering and Power Technology

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： With ICT pervading everyday objects and infrastructures, the ‘Future Internet’ is envisioned to undergo a radical transformation from how we know it today (a mere communication highway) into a vast hybrid network seamlessly integrating knowledge, people and machines into techno-social ecosystems whose behaviour transcends the boundaries of today’s engineering science. As the internet of things continues to grow, billions and trillions of data bytes need to be moved, stored and shared. The energy thus consumed and the climate impact of data centers are increasing dramatically, thereby becoming significant contributors to global warming and climate change. As reported recently, the combined electricity consumption of the world’s data centers has already exceeded that of some of the world''s top ten economies. In the ensuing process of integrating traditional and renewable energy, monitoring and managing various energy sources, and processing and transferring technological information through various channels, IT will undoubtedly play an ever-increasing and central role. Several technologies are currently racing to production to meet this challenge, from ‘smart dust’ to hybrid networks capable of controlling the emergence of dependable and reliable green and energy-efficient ecosystems – which we generically term the ‘energy web’ – calling for major paradigm shifts highly disruptive of the ways the energy sector functions today. The EAI Transactions on Energy Web are positioned at the forefront of these efforts and provide a forum for the most forward-looking, state-of-the-art research bringing together the cross section of IT and Energy communities. The journal will publish original works reporting on prominent advances that challenge traditional thinking.