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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
Ying Han, Huiting Xie, Wenbin Liu, Haifeng Li, Mengjing Wang, Xuebin Chen, Xiao Liao, Nan Yan
《环境科学与工程前沿(英文)》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0873-7
关键词: Soil Potentially harmful elements Contamination Kriging interpolation Risk assessment Wind direction
Qualitative analysis of direction of public hospital reforms in China
null
《医学前沿(英文)》 2018年 第12卷 第2期 页码 218-223 doi: 10.1007/s11684-017-0534-7
Reforms in public hospitals are among the most important improvements in China’s health care system over the last two decades. However, the reforms that should be implemented in public hospitals are unclear. Thus, a feasible direction of reforms in Chinese public hospitals is suggested and reliable policy suggestions are provided for the government to reform public hospitals. The data used in this study were mainly derived from a qualitative study. Focus group discussions and in-depth interviews were conducted in Shanghai, Guangdong, and Gansu between May and December 2014. Government funding accounted for approximately eight percent of the total annual revenue of public hospitals in China, and the insufficient government subsidy considerably affects the operation mechanism of public hospitals. However, solely increasing this subsidy cannot address the inappropriate incentives of public hospitals in China. The most crucial step in setting the direction of reforms in public hospitals in China is transforming inappropriate incentives by implementing a new evaluation index system for directors and physicians in public hospitals.
关键词: public hospital government hospital public funding operation mechanism
Biologically inspired model of path integration based on head direction cells and grid cells
Yang ZHOU,De-wei WU
《信息与电子工程前沿(英文)》 2016年 第17卷 第5期 页码 435-448 doi: 10.1631/FITEE.1500364
关键词: Head direction cells (HDCs) Grid cells (GCs) Path integration Bionic navigation
Distribution of background equivalent static wind load on high-rise buildings
Jianguo ZHANG , Ming GU ,
《结构与土木工程前沿(英文)》 2009年 第3卷 第3期 页码 241-248 doi: 10.1007/s11709-009-0036-z
关键词: high-rise buildings along-wind cross-wind background equivalent static wind load close formulae
Review of aeroelasticity for wind turbine: Current status, research focus and future perspectives
Pinting ZHANG, Shuhong HUANG
《能源前沿(英文)》 2011年 第5卷 第4期 页码 419-434 doi: 10.1007/s11708-011-0166-6
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
Assessment of wind energy potential in Gaza Strip
Juma Yousuf ALAYDI
《能源前沿(英文)》 2011年 第5卷 第3期 页码 297-304 doi: 10.1007/s11708-010-0134-6
关键词: wind data wind resource assessment wind power density wind energy the Weibull distribution and Weibull parameters
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
Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model
《结构与土木工程前沿(英文)》 2023年 第17卷 第1期 页码 78-98 doi: 10.1007/s11709-022-0936-8
关键词: CFD–FEM coupling steel beam wind ceiling jet numerical heat transfer
Evaluation of the wind energy potential of two south west sites in Nigeria
Olaleye M. AMOO
《能源前沿(英文)》 2012年 第6卷 第3期 页码 237-246 doi: 10.1007/s11708-012-0201-2
关键词: wind potential wind speed wind power density wind gust turbulence intensity Nigeria
Condition monitoring of a wind turbine generator using a standalone wind turbine emulator
Himani,Ratna DAHIYA
《能源前沿(英文)》 2016年 第10卷 第3期 页码 286-297 doi: 10.1007/s11708-016-0419-5
关键词: condition monitoring (CM) wind turbine emulator (WTE) wind turbine generator (WTG) maximum power point tracking (MPPT) tip speed ratio (TSR) rotor faults stator faults
Digital manufacturing—the development direction of the manufacturing technology in the 21st century
XIONG You-lun, YIN Zhou-ping
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 125-130 doi: 10.1007/s11465-006-0021-3
关键词: development foundation multi-discipline scientific supporting
Optimization design of spar cap layup for wind turbine blade
Jie ZHU, Xin CAI, Pan PAN, Rongrong GU
《结构与土木工程前沿(英文)》 2012年 第6卷 第1期 页码 53-56 doi: 10.1007/s11709-012-0147-9
关键词: wind turbine blade spar cap layup optimization design blade mass
Investigation on available wind energy at Tungku beach
M. G. YAZDANI, M. A. SALAM
《能源前沿(英文)》 2012年 第6卷 第3期 页码 275-279 doi: 10.1007/s11708-012-0194-x
关键词: wind velocity temperature tower height power density Raleigh distribution electrical power
标题 作者 时间 类型 操作
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
Assessment of pollution of potentially harmful elements in soils surrounding a municipal solid waste incinerator, China
Ying Han, Huiting Xie, Wenbin Liu, Haifeng Li, Mengjing Wang, Xuebin Chen, Xiao Liao, Nan Yan
期刊论文
Biologically inspired model of path integration based on head direction cells and grid cells
Yang ZHOU,De-wei WU
期刊论文
Distribution of background equivalent static wind load on high-rise buildings
Jianguo ZHANG , Ming GU ,
期刊论文
Review of aeroelasticity for wind turbine: Current status, research focus and future perspectives
Pinting ZHANG, Shuhong HUANG
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
Quality and efficiency improvement technology for five megawatt offshore wind turbines and its application
Huali HAN
期刊论文
Condition monitoring of a wind turbine generator using a standalone wind turbine emulator
Himani,Ratna DAHIYA
期刊论文
Digital manufacturing—the development direction of the manufacturing technology in the 21st century
XIONG You-lun, YIN Zhou-ping
期刊论文
Optimization design of spar cap layup for wind turbine blade
Jie ZHU, Xin CAI, Pan PAN, Rongrong GU
期刊论文