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A computational platform for considering the effects of aerodynamic and seismic load combination for utility scale horizontal axis wind turbines 被引量:12
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作者 Mohammad-Amin Asareh Ian Prowell +1 位作者 Jeffery Volz William Schonberg 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2016年第1期91-102,共12页
The wide deployment of wind turbines in locations with high seismic hazard has led engineers to take into account a more comprehensive seismic design of such structures. Turbine specific guidelines usually use simplif... The wide deployment of wind turbines in locations with high seismic hazard has led engineers to take into account a more comprehensive seismic design of such structures. Turbine specific guidelines usually use simplified methods and consider many assumptions to combine seismic demand with the other operational loads effecting the design of these structures. As the turbines increase in size and capacity, the interaction between seismic loads and aerodynamic loads becomes even more important. In response to the need for a computational tool that can perform coupled simulations of wind and seismic loads, a seismic module is developed for the FAST code and described in this research. This platform allows engineers working in this industry to directly consider interaction between seismic and other environmental loads for turbines. This paper details the practical application and theory of this platform and provides examples for the use of different capabilities. The platform is then used to show the suitable earthquake and operational load combination with the implicit consideration of aerodynamic damping by estimating appropriate load factors. 展开更多
关键词 renewable energy horizontal axis wind turbines aerodynamic-seismic load interaction aerodynamicdamping coupled simulations
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Design and Development of a Wind Turbine Simulator Using a Separately Excited DC Motor
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作者 K. K. M. S. Kariyawasam K. K. N. P. Karunarathna +2 位作者 R. M. A. Karunarathne M. P. D. S. C. Kularathne K. T. M. U. Hemapala 《Smart Grid and Renewable Energy》 2013年第3期259-265,共7页
Over the course of the past decade, power generation based on wind energy has become a significant component in modern power systems, which has caused substantial increase in the wind power based research. As it is co... Over the course of the past decade, power generation based on wind energy has become a significant component in modern power systems, which has caused substantial increase in the wind power based research. As it is complicated to use a real wind turbine for laboratory purposes, development of a replica of a real wind turbine that can be connected and used indoors is imperative. This paper presents the design and development of a wind turbine simulator that operates on the typical power-speed characteristics of a wind turbine. First, the mathematical model of the wind turbine simulator is developed and the corresponding CAD simulations are carried out. Proposed hardware implementations involve a DC motor-DC generator set, a variable load and a control system based on PI controllers. It is a simple, low power and low cost design that can be easily connected to an AC system through an inverter. 展开更多
关键词 wind turbines wind turbine SIMULATOR PI CONTROLLER Variable load MICROGRID
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Connecting Wind Turbine Generator to Distribution Power Grid--A Preload Flow Calculation Stage
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作者 Agbetuyi Ayoade Felix Awosope Cladius Ojo Aremu Awelewa Ayokunle Ajibola Adoghe Uwakhonye Anthony Odigwe Ani Ishioma Samuel Adekunle Isaac 《Journal of Energy and Power Engineering》 2014年第10期1811-1815,共5页
A distribution grid is generally characterized by a high R/X (resistance/reactance) ratio and it is radial in nature. By design, a distribution grid system is not an active network, and it is normally designed in su... A distribution grid is generally characterized by a high R/X (resistance/reactance) ratio and it is radial in nature. By design, a distribution grid system is not an active network, and it is normally designed in such a way that power flows from transmission system via distribution system to consumers. But in a situation when wind turbines are connected to the distribution grid, the power source will change from one source to two sources, in this case, network is said to be active. This may probably have an impact on the distribution grid to whenever the wind turbine is connected. The best way to know the impact of wind turbine on the distribution grid in question is by carrying out load flow analysis on that system with and without the connection of wind turbines. Two major fundamental calculations: the steady-state voltage variation at the PCC (point of common coupling) and the calculation of short-circuit power of the grid system at the POC (point of connection) are necessary before carrying out the load flow study on the distribution grid. This paper, therefore, considers these pre-load flow calculations that are necessary before carrying out load flow study on the test distribution grid. These calculations are carded out on a test distribution system. 展开更多
关键词 Distribution grid power quality wind turbine generator load flow.
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Distributed Model Predictive Load Frequency Control of Multi-area Power System with DFIGs 被引量:17
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作者 Yi Zhang Xiangjie Liu Bin Qu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2017年第1期125-135,共11页
Reliable load frequency control LFC is crucial to the operation and design of modern electric power systems. Considering the LFC problem of a four-Area interconnected power system with wind turbines, this paper presen... Reliable load frequency control LFC is crucial to the operation and design of modern electric power systems. Considering the LFC problem of a four-Area interconnected power system with wind turbines, this paper presents a distributed model predictive control DMPC based on coordination scheme. The proposed algorithm solves a series of local optimization problems to minimize a performance objective for each control area. The generation rate constraints GRCs, load disturbance changes, and the wind speed constraints are considered. Furthermore, the DMPC algorithm may reduce the impact of the randomness and intermittence of wind turbine effectively. A performance comparison between the proposed controller with and without the participation of the wind turbines is carried out. Analysis and simulation results show possible improvements on closed-loop performance, and computational burden with the physical constraints. © 2014 Chinese Association of Automation. 展开更多
关键词 Asynchronous generators Electric control equipment Electric fault currents Electric frequency control Electric load management Electric power systems Model predictive control Optimization Press load control wind wind turbines
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Simulation the Wind Grid Code Requirements for Wind Farms Connection in Kosovo Transmission Grid 被引量:1
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作者 Ali Gashi Gazmend Kabashi +2 位作者 Skender Kabashi Skender Ahmetaj Valon Veliu 《Energy and Power Engineering》 2012年第6期482-495,共14页
This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System ... This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System are required to comply with the Grid Code. The Grid Code was originally developed with conventional synchronous generators. Since Wind Turbine Generators don’t have the same characteristics as synchronous generators, it was considered appropriate to develop a new set of Grid Code provisions specifically for Wind Farm Power Stations in relation with specific characteristic of Kosovo Power System. With high excepted penetration of wind power, a simultaneous loss of Wind Farms generation will put in the risk the security and reliability of Power System. Therefore, the main requirements for Wind farm power stations concern the fault ride through capability, frequency operation range, and reactive power capability of wind turbines. In the case of grid faults wind turbines have to supply a definite reactive power depending on the instantaneous voltage level of connection point and they must return quickly to normal operation. 展开更多
关键词 Impact on the GRID of wind Parks Fault RIDE Through PSS/E Dynamic simulation wind GRID Code wind turbine generators
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Intelligent Wind Power Unit with Tandem Wind Rotors and Armatures (Optimization of Front Blade Profile) 被引量:4
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作者 Yuta Usui Koichi Kubo Toshiaki Kanemoto 《Journal of Energy and Power Engineering》 2012年第11期1791-1799,共9页
The authors have invented the superior wind power unit, which is composed of the tandem wind rotors and the double rotational armature type generator without the traditional stator. The large-sized front wind rotor an... The authors have invented the superior wind power unit, which is composed of the tandem wind rotors and the double rotational armature type generator without the traditional stator. The large-sized front wind rotor and the small-sized rear wind rotor drive, as for the upwind type, the inner and the outer rotational armatures, respectively, in keeping the rotational torque counter-balanced between both wind rotors/armatures. The unique rotational behaviors of the tandem wind rotors and the fundamental performances of the unit have been discussed at the previous paper. Continuously, this paper investigates experimentally and numerically the flow condition around the wind rotors to know the flow interactions between the front and the rear wind rotors, and optimizes the blade profile in the front wind rotor. The front blade should work fruitfully at the larger radius and had better not work at the smaller radius for giving plenty of wind energy to the rear wind rotor, taking account of the flow interaction between both wind rotors. 展开更多
关键词 wind turbine wind energy BLADE tandem wind rotors generator ARMATURE numerical simulation.
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Wind Energy Generation and Assessment of Resources in India 被引量:1
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作者 Vishakha Tank Jignasha Bhutka T. Harinarayana 《Journal of Power and Energy Engineering》 2016年第10期25-38,共15页
The gap between energy demand and its generation is constantly widening. People have started giving more emphasis on renewable sources of energy. This paper presents the estimation of potential for wind energy generat... The gap between energy demand and its generation is constantly widening. People have started giving more emphasis on renewable sources of energy. This paper presents the estimation of potential for wind energy generation maps based on fixed wind turbine capacity. Although wind energy has developed substantially in recent years, we have only wind speed and wind potential density maps. Our attempt here is to generate wind energy generation potential maps. Major step in achieving this goal is modeling of wind energy conversion system using TRNSYS software. The model consists of three main components namely the weather, the turbines and energy conversion parameters. The weather data are provided from the meteorological database, namely Meteonorm. The simulated output is compared with actual wind generation of wind farms. After comparing our model results with the existing wind energy generation data, we have extended to compute the wind energy generation for all locations in India. For simulation, 4691 locations are identified considering 0.25° × 0.25° interval. The energy generation simulated data are compiled and developed into maps that are useful to all wind energy developers. The data generated and presented in the form of maps are for all the 30 states of India. 展开更多
关键词 wind Energy Generation Map wind turbine TRNSYS simulation INDIA
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Research on multi-time scale doubly-fed wind turbine test system based on FPGA+CPU heterogeneous calculation
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作者 Qing Mu Xing Zhang +3 位作者 Xiaoxin Zhou Xiaowei Fan Yingmei Liu Dongbo Pan 《Global Energy Interconnection》 2019年第1期7-18,共12页
As the proportion of renewable energy increases, the interaction between renewable energy devices and the grid continues to enhance. Therefore, the renewable energy dynamic test in a power system has become more and m... As the proportion of renewable energy increases, the interaction between renewable energy devices and the grid continues to enhance. Therefore, the renewable energy dynamic test in a power system has become more and more important. Traditional dynamic simulation systems and digital-analog hybrid simulation systems are difficult to compromise on the economy, flexibility and accuracy. A multi-time scale test system of doubly fed induction generator based on FPGA+ CPU heterogeneous calculation is proposed in this paper. The proposed test system is based on the ADPSS simulation platform. The power circuit part of the test system is setup up using the EMT(electromagnetic transient simulation) simulation, and the control part uses the actual physical devices. In order to realize the close-loop testing for the physical devices, the power circuit must be simulated in real-time. This paper proposes a multi-time scale simulation algorithm, in which the decoupling component divides the power circuit into a large time scale system and a small time scale system in order to reduce computing effort. This paper also proposes the FPGA+CPU heterogeneous computing architecture for implementing this multitime scale simulation. In FPGA, there is a complete small time-scale EMT engine, which support the flexibly circuit modeling with any topology. Finally, the test system is connected to an DFIG controller based on Labview to verify the feasibility of the test system. 展开更多
关键词 Renewable energy gen erati on DOUBLY fed in duction generator ADPSS simulati on SYSTEM wind turbine test SYSTEM Multi-time scale FPGA+CPU
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结合风速预测的直驱风电机组减载调频策略
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作者 王印松 袁环环 《华北电力大学学报(自然科学版)》 CAS 北大核心 2024年第3期101-109,共9页
直驱永磁风电机组常用的减载调频控制策略缺乏对风电机组运行经济性和调频能力的考虑,易导致系统出现调频能力不足或备用功率冗余的问题,对此提出了一种基于变减载率的优化减载调频策略。首先划分不同的风速模式,确立不同模式下的超速... 直驱永磁风电机组常用的减载调频控制策略缺乏对风电机组运行经济性和调频能力的考虑,易导致系统出现调频能力不足或备用功率冗余的问题,对此提出了一种基于变减载率的优化减载调频策略。首先划分不同的风速模式,确立不同模式下的超速与变桨距协调控制方案;其次考虑系统调频能力和发电量两因素,设计函数求取不同工况下的最优减载率;由于风速波动频繁,风机控制具有延迟,因此利用风速预测和滑动窗口法对最优减载率做进一步调整;最后搭建系统仿真模型,通过改进的频率控制动态调整减载率参与系统调频。仿真实验表明,所提控制策略与常用的策略相比在实时风速、负荷扰动下系统频率动态偏差减小、达到最低值的时间延长,风机发电量增加,桨距角变化量减小。该策略能满足调频需求,提升调频质量,减小机械磨损,提高风机运行的经济性。 展开更多
关键词 直驱永磁风电机组 可变减载率 超速控制 变桨距控制 优化减载控制
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双排涡流发生器高度参数对风力机气动性能影响的研究
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作者 杨瑞 杨涛 +3 位作者 曾学仁 方亮 包广超 田楠 《液压气动与密封》 2024年第3期23-29,共7页
为了研究双排涡流发生器高度参数对风力机气动性能的影响,以NREL Phase VI风力机叶片为模型,采用CFD方法分别对加装单排涡流发生器、不同高度参数双排涡流发生器共10种模型进行模拟,分析其在不同风速、转速下对风力机叶片气动性能的影... 为了研究双排涡流发生器高度参数对风力机气动性能的影响,以NREL Phase VI风力机叶片为模型,采用CFD方法分别对加装单排涡流发生器、不同高度参数双排涡流发生器共10种模型进行模拟,分析其在不同风速、转速下对风力机叶片气动性能的影响。计算结果表明,所有不同高度参数双排涡流发生器在不同转速、来流风速时,均能提升风力机叶片气动性能,改善风力机流场。其中,第一排涡流发生器与第二排涡流发生器高度差越大时,双排涡流发生器整体流动控制效果最好,即最佳高度参数Case 4(第一排涡流发生器高度3 mm,第二排涡流发生器高度9 mm)前低后高组合。同时,最佳高度参数双排涡流发生器和单排涡流发生器相比能进一步延迟流动分离,取得更好的流动控制效果。 展开更多
关键词 风力机 数值模拟 涡流发生器 气动性能
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一种半潜式商用6 MW级风力机载荷数值模拟研究 被引量:1
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作者 方龙 翟恩地 +5 位作者 李荣富 宁巧珍 赵斌 李晔 周雅容 章丽骏 《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2024年第1期17-24,128,共9页
针对海上漂浮式风力机在其运行状态下的叶轮气动载荷与平台运动状态难以预测的问题,本文以一种商用6 MW级漂浮式风力机为研究对象,基于非稳态的雷诺平均湍流模型,进行了全耦合数值模拟和水池模型试验研究。结果显示:浮式风力机自由衰减... 针对海上漂浮式风力机在其运行状态下的叶轮气动载荷与平台运动状态难以预测的问题,本文以一种商用6 MW级漂浮式风力机为研究对象,基于非稳态的雷诺平均湍流模型,进行了全耦合数值模拟和水池模型试验研究。结果显示:浮式风力机自由衰减周期的模拟值在纵摇、横揺和垂荡上与实验值吻合度较高,而在纵荡、横荡和艏摇上,衰减周期的模拟值与实验值存在一定误差,这主要是由数值模型中对系泊系统进行悬链线简化时造成的。在静水工况下,风力机气动载荷的波动主要受塔影效应影响,机舱加速度的波动与叶轮推力系数变化呈正相关,浮式风力机纵荡和纵摇运动主要受叶轮气动载荷波动的影响;在规则波和非规则波工况下,叶轮推力的波动受浮式基础纵荡和纵摇的影响较大,叶轮推力系数变化和机舱速度呈负相关。浮式风力机的运动主要受波浪载荷的影响,气动载荷对其影响相对较小。 展开更多
关键词 漂浮式风力机 模型试验 数值模拟 非稳态雷诺平均 气动载荷 自由衰减 静水 规则波 非规则波
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复合加载模式下四筒导管架基础承载特性分析
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作者 崔希君 史永晋 +3 位作者 魏羲 乐丛欢 姜明涛 张浦阳 《太阳能学报》 EI CAS CSCD 北大核心 2024年第6期581-588,共8页
针对海上风电四筒导管架基础在砂土中的复合承载特性,采用数值模拟的方法,计算5种不同荷载组合下的四筒导管架基础的极限承载力。为分析不同加载模式下筒基长径比和筒间距对基础极限承载力的影响,分别改变筒高和吸力筒圆心距离进行计算... 针对海上风电四筒导管架基础在砂土中的复合承载特性,采用数值模拟的方法,计算5种不同荷载组合下的四筒导管架基础的极限承载力。为分析不同加载模式下筒基长径比和筒间距对基础极限承载力的影响,分别改变筒高和吸力筒圆心距离进行计算并绘制破坏包络线。结果表明,在竖向荷载作用下,基础的水平极限承载力先增大后减小;抗扭承载力随竖向荷载的增大而增大,随水平荷载的增大而减小;不同竖向荷载的作用下,水平和弯矩极限承载力基本呈线性相关。 展开更多
关键词 海上风电 数值模拟 极限承载力 吸力筒 导管架基础 复合加载 包络线
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低电压穿越过程中风电机组载荷特性联合仿真研究
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作者 王耀函 张扬帆 +3 位作者 赵庆旭 王晓东 梁恺 王玙 《发电技术》 CSCD 2024年第4期705-715,共11页
【目的】电网电压跌落故障会引起风电机组载荷的剧烈变化,严重影响风电机组的安全稳定运行。随着风电机组的大型化,风电叶片长度不断增加,塔筒增高,其载荷特性对系统参数波动变得敏感。因此,需要研究电网电压跌落过程中关键部件的载荷... 【目的】电网电压跌落故障会引起风电机组载荷的剧烈变化,严重影响风电机组的安全稳定运行。随着风电机组的大型化,风电叶片长度不断增加,塔筒增高,其载荷特性对系统参数波动变得敏感。因此,需要研究电网电压跌落过程中关键部件的载荷与振动特性。【方法】提出了基于动态链接库和Socket通信的数据交互方式,建立了Simulink与Bladed的联合仿真方法。基于某3.4 MW风电机组模型,采用给定风速变化的工况对联合仿真平台进行验证。研究了低电压穿越(low voltage ride through,LVRT)过程中机组总体性能与叶片、塔筒载荷的变化关系。【结果】电网电压跌落幅值对电机功率影响较大,对风轮的调节参数影响较小。低电压穿越过程中风轮的桨矩角调节和转速有较长时间的波动,叶片外叶展处载荷的变化大于内叶展处,叶尖位移增加。塔架的振动频率与固有频率接近,存在潜在风险,需要在机组设计中考虑。【结论】联合仿真平台可以很好地模拟风电机组的气动性能与部件载荷的暂态特性,为机组的优化控制提供参考。 展开更多
关键词 新能源发电 风电机组 联合仿真 低电压穿越(LVRT) 暂态特性 载荷
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考虑构网型风电频率响应的电力系统低频减载策略研究
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作者 邹小明 李强 +2 位作者 汪成根 贾勇勇 汤奕 《可再生能源》 CAS CSCD 北大核心 2024年第8期1089-1095,共7页
大规模构网型风电机组并网会改变电力系统频率响应特性,而传统低频减载策略尚未计及构网型风电机组的影响,可能导致大功率缺额后的系统减载量不合理。文章提出一种考虑构网型风电频率响应的电力系统低频减载策略。首先,基于构网型风电... 大规模构网型风电机组并网会改变电力系统频率响应特性,而传统低频减载策略尚未计及构网型风电机组的影响,可能导致大功率缺额后的系统减载量不合理。文章提出一种考虑构网型风电频率响应的电力系统低频减载策略。首先,基于构网型风电虚拟惯量和一次调频控制模型,建立计及构网型风电频率响应的系统频率响应简化模型;其次,分析构网型风电的有功响应特性对系统不平衡功率量的影响,进而精细化估算用于指导电网多轮次减载的不平衡功率量,从而提出自适应低频减载实施策略;最后,通过算例分析,验证了文章所提低频减载策略的可行性和有效性。 展开更多
关键词 构网型风电机组 虚拟惯量 一次调频 功率缺额 低频减载
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风机旋转叶片的仿真研究
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作者 陈文安 刘宏月 《计量与测试技术》 2024年第8期29-31,共3页
针对风机旋转叶片的数值模拟问题,本文将叶片的重力交变特性与流固耦合仿真结合,提出基于交变重力载荷施加的旋转叶片流固耦合仿真方法,并进行试验验证。结果表明:该方法能得到风机旋转叶片在不同姿态下的应力结果,可为进一步的研究提... 针对风机旋转叶片的数值模拟问题,本文将叶片的重力交变特性与流固耦合仿真结合,提出基于交变重力载荷施加的旋转叶片流固耦合仿真方法,并进行试验验证。结果表明:该方法能得到风机旋转叶片在不同姿态下的应力结果,可为进一步的研究提供参考。 展开更多
关键词 风机叶片 交变重力载荷 流固耦合仿真
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海上风电机组三脚架支撑结构疲劳分析方法
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作者 陆飞宇 李成功 +3 位作者 龙凯 Diaeldin Yara 张锦华 陶涛 《太阳能学报》 EI CAS CSCD 北大核心 2024年第7期699-703,共5页
为实现海上风电机组支撑结构抗疲劳设计,提出基于整体-局部方式建模的疲劳分析方法。利用该方法对热点局部区域进行详细有限元建模,基于IIW规范采用高精度六面体实体单元离散,其余非重点区域采用梁单元离散,可克服以往运用应力影响矩阵... 为实现海上风电机组支撑结构抗疲劳设计,提出基于整体-局部方式建模的疲劳分析方法。利用该方法对热点局部区域进行详细有限元建模,基于IIW规范采用高精度六面体实体单元离散,其余非重点区域采用梁单元离散,可克服以往运用应力影响矩阵研究中忽略整体结构位移、边界条件不易施加等缺点。基于IEC61400规范进行整机动力学和载荷计算,对某海上风电机组三脚架支撑结构进行疲劳分析。对比分析不同载荷工况、波高和水深下的累积损伤值,结果验证了所提出的整体-局部建模方法在海上风电机组三脚架支撑结构疲劳分析中的可行性和优越性。 展开更多
关键词 海上风电机组 抗疲劳性 疲劳损伤 疲劳载荷 网格划分
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串列不等直径水平轴风力机气动性能研究
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作者 岳健 李永坤 +2 位作者 张辰源 苏少华 姜宜辰 《太阳能学报》 EI CAS CSCD 北大核心 2024年第4期190-196,共7页
为研究上游风力机叶轮直径增大和轮毂高度抬升对下游风力机气动性能影响,采用计算流体力学方法对串列水平轴风力机三维流场进行模拟,以揭示上游风力机叶轮尺寸增大和轮毂高度抬升对下游风力机气动性能影响规律。研究结果表明:增大上游... 为研究上游风力机叶轮直径增大和轮毂高度抬升对下游风力机气动性能影响,采用计算流体力学方法对串列水平轴风力机三维流场进行模拟,以揭示上游风力机叶轮尺寸增大和轮毂高度抬升对下游风力机气动性能影响规律。研究结果表明:增大上游风力机叶轮直径,会削减下游临近机组输出功率,增加机组在低频,1倍、2倍、3倍轴频推力脉动,增大机组疲劳载荷;随着风力机间距的增加,增大叶轮直径对12D范围外机组输出功率影响可忽略不计,但机组疲劳载荷在低频和1倍轴频仍有明显的增大。抬高上游机组轮毂高度,机组较近时,可使下游风力机避开一部分尾流,显著提高下游风力机的输出功率,但也会使风力机叶轮在旋转一周过程中产生较大的叶片推力脉动;当风力机间距较远时,抬高塔架高度有利于尾流恢复,进而提高下游机组输出功率,降低机组疲劳载荷。 展开更多
关键词 风力机 叶轮直径 轮毂高度 数值模拟 气动性能 疲劳载荷
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5.3 MW直冷双馈异步风力发电机设计与分析
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作者 张书博 朱曙光 +2 位作者 张钰清 吕嘉诚 周正 《微特电机》 2024年第11期20-24,29,共6页
直冷双馈异步风力发电机以其较好的冷却效果成为目前陆上风电领域的设计主流。设计了一款5.3 MW直冷双馈异步风力发电机,结合理论计算和仿真分析确定电机尺寸并分析电机性能。通过分析电机的磁场分布及输出电压、电流、转矩等参数验证... 直冷双馈异步风力发电机以其较好的冷却效果成为目前陆上风电领域的设计主流。设计了一款5.3 MW直冷双馈异步风力发电机,结合理论计算和仿真分析确定电机尺寸并分析电机性能。通过分析电机的磁场分布及输出电压、电流、转矩等参数验证了设计的合理性。仿真结果表明,该电机设计方案合理,可行性较高,为大功率双馈异步风力发电机的设计提供了有益的参考。 展开更多
关键词 风力发电 直冷双馈异步风力发电机 理论计算 仿真分析
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变桨系统故障下风机极限载荷控制算法仿真设计与分析
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作者 赵森 文登宇 《机械设计与制造工程》 2024年第4期16-20,共5页
以风力发电机组变桨系统故障下单个叶片卡死无法调节变桨角度工况为研究对象,提出一种变桨故障下风机极限载荷控制算法,通过分析该工况下机组的不平衡载荷关系,根据坐标转换关系将面外弯矩转换为轮毂系统和偏航系统的极限载荷,通过载荷... 以风力发电机组变桨系统故障下单个叶片卡死无法调节变桨角度工况为研究对象,提出一种变桨故障下风机极限载荷控制算法,通过分析该工况下机组的不平衡载荷关系,根据坐标转换关系将面外弯矩转换为轮毂系统和偏航系统的极限载荷,通过载荷变化计算出最优的变桨角度进而降低风力发电机组各部件的极限载荷峰值。仿真结果表明,采用极限载荷控制算法可以明显降低风力发电机组在变桨系统故障下的极限载荷,进而保证机组运行的安全性,降低风机各子系统部件在该工况下的极限载荷。 展开更多
关键词 风力发电机组 变桨系统 极限载荷 仿真分析
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基于仿真分析的叶片载荷与叶片-塔架净空数据分布研究
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作者 李佳盈 《机械工程师》 2024年第11期66-71,78,共7页
为了揭示风电机组叶片载荷与叶片-塔架净空的内在关系,以叶素动量理论、结构动力学理论等仿真理论为基础,采用Bladed软件对5 MW直驱永磁风电机组进行整机仿真建模,研究风激励下叶片载荷与叶片-塔架净空的数据分布。仿真结果表明:当叶轮... 为了揭示风电机组叶片载荷与叶片-塔架净空的内在关系,以叶素动量理论、结构动力学理论等仿真理论为基础,采用Bladed软件对5 MW直驱永磁风电机组进行整机仿真建模,研究风激励下叶片载荷与叶片-塔架净空的数据分布。仿真结果表明:当叶轮呈现Y字形态时,叶片载荷与叶片-塔架净空存在确定的线性关系;当桨距角和对风偏差改变时,叶片载荷与叶片-塔架净空的线性关系仍然存在。 展开更多
关键词 风电机组 叶片载荷 叶片-塔架净空 Bladed仿真
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