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Maurizio FACCIO, Mauro GAMBERI, Marco BORTOLINI, Mojtaba NEDAEI
《能源前沿(英文)》 2018年 第12卷 第4期 页码 591-622 doi: 10.1007/s11708-018-0567-x
关键词: hybrid renewable energy systems (HRESs) design and optimization environmental pollutions PV array wind turbines (WTs) inverter diesel generator (DG)
Huali HAN
《工程管理前沿(英文)》 2020年 第7卷 第4期 页码 618-621 doi: 10.1007/s42524-020-0142-0
关键词: renewable energy megawatt offshore wind turbine technology-driven quality improvement
Optimal placement of wind turbines within a wind farm considering multi-directional wind speed using
A.S.O. OGUNJUYIGBE, T.R. AYODELE, O.D. BAMGBOJE
《能源前沿(英文)》 2021年 第15卷 第1期 页码 240-255 doi: 10.1007/s11708-018-0514-x
关键词: optimal placement wind turbines wind direction genetic algorithm wake effect
Feasibility of using wind turbines for renewable hydrogen production in Firuzkuh, Iran
Ali MOSTAFAEIPOUR, Mojtaba QOLIPOUR, Hossein GOUDARZI
《能源前沿(英文)》 2019年 第13卷 第3期 页码 494-505 doi: 10.1007/s11708-018-0534-6
关键词: wind turbine hydrogen production HOMER software decision making trial and evaluation (DEMATEL) data envelopment analysis (DEA) Firuzkuh
Power fluctuation and power loss of wind turbines due to wind shear and tower shadow
Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 321-332 doi: 10.1007/s11465-017-0434-1
The magnitude and stability of power output are two key indices of wind turbines. This study investigates the effects of wind shear and tower shadow on power output in terms of power fluctuation and power loss to estimate the capacity and quality of the power generated by a wind turbine. First, wind speed models, particularly the wind shear model and the tower shadow model, are described in detail. The widely accepted tower shadow model is modified in view of the cone-shaped towers of modern large-scale wind turbines. Power fluctuation and power loss due to wind shear and tower shadow are analyzed by performing theoretical calculations and case analysis within the framework of a modified version of blade element momentum theory. Results indicate that power fluctuation is mainly caused by tower shadow, whereas power loss is primarily induced by wind shear. Under steady wind conditions, power loss can be divided into wind farm loss and rotor loss. Wind farm loss is constant at 3α(3α−1)R2/(8H2). By contrast, rotor loss is strongly influenced by the wind turbine control strategies and wind speed. That is, when the wind speed is measured in a region where a variable-speed controller works, the rotor loss stabilizes around zero, but when the wind speed is measured in a region where the blade pitch controller works, the rotor loss increases as the wind speed intensifies. The results of this study can serve as a reference for accurate power estimation and strategy development to mitigate the fluctuations in aerodynamic loads and power output due to wind shear and tower shadow.
关键词: wind turbine wind shear tower shadow power fluctuation power loss
Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 281-302 doi: 10.1007/s11465-017-0442-1
Electric power conversion system (EPCS), which consists of a generator and power converter, is one of the most important subsystems in a direct-drive wind turbine (DD-WT). However, this component accounts for the most failures (approximately 60% of the total number) in the entire DD-WT system according to statistical data. To improve the reliability of EPCSs and reduce the operation and maintenance cost of DD-WTs, numerous researchers have studied condition monitoring (CM) and fault diagnostics (FD). Numerous CM and FD techniques, which have respective advantages and disadvantages, have emerged. This paper provides an overview of the CM, FD, and operation control of EPCSs in DD-WTs under faults. After introducing the functional principle and structure of EPCS, this survey discusses the common failures in wind generators and power converters; briefly reviewed CM and FD methods and operation control of these generators and power converters under faults; and discussed the grid voltage faults related to EPCSs in DD-WTs. These theories and their related technical concepts are systematically discussed. Finally, predicted development trends are presented. The paper provides a valuable reference for developing service quality evaluation methods and fault operation control systems to achieve high-performance and high-intelligence DD-WTs.
关键词: direct-drive wind turbine electric power conversion system condition monitoring fault diagnosis operation control under faults fault tolerance
翟钢军,李玉刚,康海贵
《中国工程科学》 2010年 第12卷 第11期 页码 40-46
针对海上风机基础设计中经常遇到复杂的方案优化选型问题,将多因素、多级模糊优选理论引入到基础的设计选型中。针对影响因素复杂、确定隶属函数主观因素较强的情况, 成功引入因素的优先关系法来确定优选矩阵的隶属度, 较好地解决了确定隶属函数的人为影响。通过此优选模型成功地将影响基础设计选型的13 种主要因素和4 种桩基基础设计形式进行了多级模糊综合优选决策,得到了比较理想的决策结果, 为海上风机基础设计选型提供了新的思路。
Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 377-388 doi: 10.1007/s11465-017-0431-4
Power maximization has always been a practical consideration in wind turbines. The question of how to address optimal power capture, especially when the system dynamics are nonlinear and the actuators are subject to unknown faults, is significant. This paper studies the control methodology for variable-speed variable-pitch wind turbines including the effects of uncertain nonlinear dynamics, system fault uncertainties, and unknown external disturbances. The nonlinear model of the wind turbine is presented, and the problem of maximizing extracted energy is formulated by designing the optimal desired states. With the known system, a model-based nonlinear controller is designed; then, to handle uncertainties, the unknown nonlinearities of the wind turbine are estimated by utilizing radial basis function neural networks. The adaptive neural fault tolerant control is designed passively to be robust on model uncertainties, disturbances including wind speed and model noises, and completely unknown actuator faults including generator torque and pitch actuator torque. The Lyapunov direct method is employed to prove that the closed-loop system is uniformly bounded. Simulation studies are performed to verify the effectiveness of the proposed method.
关键词: wind turbine nonlinear model maximum power tracking passive fault tolerant control adaptive neural control
Ali EL YAAKOUBI,Kamal ATTARI,Adel ASSELMAN,Abdelouahed DJEBLI
《能源前沿(英文)》 2019年 第13卷 第4期 页码 742-756 doi: 10.1007/s11708-017-0462-x
关键词: power optimization wind energy conversion system maximum power point tracking (MPPT) fuzzy logic internal model (IM) controller
吴金城,张容焱,张秀芝
《中国工程科学》 2010年 第12卷 第11期 页码 25-31
风电机组的制造成本和使用寿命取决于运行中的疲劳载荷、极端载荷和设计所依据的标准。目前,设计风电机组依据的大都是以欧洲环境特征为背景的标准,不加考虑地在台风地区使用会增加风险或制造成本。只有充分认识台风的气候特征和对风电机组的破坏机理,综合考虑,才能设计制造既能抗台风又能确保项目经济可行的风电设备。
杨文广,蒋东翔
《中国工程科学》 2015年 第17卷 第3期 页码 24-29
该文研究了大型风力机组的远程智能监测与诊断系统的关键技术问题,介绍了系统的开发情况。整个系统采用分布式架构,由数据采集与处理、实时数据存储、智能监测与诊断和人机交互4个子系统组成。智能监测与诊断子系统采用了知识库/推理机架构,推理机是一个自主开发的基于模糊Rete算法的模糊专家系统,知识库中存储了来源于风力机故障实验研究的常见振动故障的诊断知识。通过故障仿真,验证了整套系统的有效性。
关键词: 风力机;故障诊断系统;模糊专家系统
王尔贝,陈锐,霍宏斌
《中国工程科学》 2014年 第16卷 第8期 页码 69-73
针对最近提出的锚杆重力式海上风机基础,采用有限元分析软件ABAQUS研究了锚杆的关键参数对此新型基础承载特性的影响。结果表明:增加锚杆数量可以提高基础的承载力并减小单根锚杆的轴力。但是当锚杆数量增加到一定程度时,会使其间距过小,引起地基中应力的叠加,降低锚杆群的承载效率,因此锚杆数量存在上限。基础承载力几乎随锚杆直径的增加呈线性提高,锚杆直径越大对基础稳定越有利,因此在可行的情况下,应尽可能地选用大直径锚杆。锚杆环直径的增大相当于增大了基础抗倾覆力矩的力臂,因此对弯矩承载力是有利的,但由于锚杆群对地基等效刚度的改变,竖向承载力会随着锚杆环直径的增大而先增后减。设计时要综合考虑各个承载力因素,选用合适的锚杆环直径。
Exhaust hood for steam turbines-single-flow arrangement
Michal HOZNEDL , Ladislav TAJC , Jaroslav KREJCIK , Lukas BEDNAR , Kamil SEDLAK , Jiri LINHART ,
《能源前沿(英文)》 2009年 第3卷 第3期 页码 321-329 doi: 10.1007/s11708-009-0039-4
Acoustic characteristics of bi-directional turbines for thermoacoustic generators
Dongdong LIU, Yanyan CHEN, Wei DAI, Ercang LUO
《能源前沿(英文)》 2022年 第16卷 第6期 页码 1027-1036 doi: 10.1007/s11708-020-0702-3
关键词: thermoacoustic power generator acoustic characteristics bi-directional impulse turbine energy conversion
Dynamic simulation of gas turbines via feature similarity-based transfer learning
Dengji ZHOU, Jiarui HAO, Dawen HUANG, Xingyun JIA, Huisheng ZHANG
《能源前沿(英文)》 2020年 第14卷 第4期 页码 817-835 doi: 10.1007/s11708-020-0709-9
关键词: gas turbine dynamic simulation data-driven transfer learning feature similarity
标题 作者 时间 类型 操作
State-of-art review of the optimization methods to design the configuration of hybrid renewable energy systems (HRESs)
Maurizio FACCIO, Mauro GAMBERI, Marco BORTOLINI, Mojtaba NEDAEI
期刊论文
Quality and efficiency improvement technology for five megawatt offshore wind turbines and its application
Huali HAN
期刊论文
Optimal placement of wind turbines within a wind farm considering multi-directional wind speed using
A.S.O. OGUNJUYIGBE, T.R. AYODELE, O.D. BAMGBOJE
期刊论文
Feasibility of using wind turbines for renewable hydrogen production in Firuzkuh, Iran
Ali MOSTAFAEIPOUR, Mojtaba QOLIPOUR, Hossein GOUDARZI
期刊论文
Power fluctuation and power loss of wind turbines due to wind shear and tower shadow
Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU
期刊论文
of condition monitoring and operation control of electric power conversion systems in direct-drive windturbines under faults
Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE
期刊论文
Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural fault
Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD
期刊论文
optimization based sensorless maximum power point tracking strategy and internal model controller for windturbines systems driven SCIG
Ali EL YAAKOUBI,Kamal ATTARI,Adel ASSELMAN,Abdelouahed DJEBLI
期刊论文
Exhaust hood for steam turbines-single-flow arrangement
Michal HOZNEDL , Ladislav TAJC , Jaroslav KREJCIK , Lukas BEDNAR , Kamil SEDLAK , Jiri LINHART ,
期刊论文
Acoustic characteristics of bi-directional turbines for thermoacoustic generators
Dongdong LIU, Yanyan CHEN, Wei DAI, Ercang LUO
期刊论文