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最大风能捕获

最大风能捕获的相关文献在2002年到2022年内共计148篇,主要集中在电工技术、自动化技术、计算机技术、能源与动力工程 等领域,其中期刊论文105篇、会议论文9篇、专利文献28650篇;相关期刊58种,包括中国高新技术企业、黑龙江科技信息、科学技术与工程等; 相关会议8种,包括2010年分散式发电与智能电网技术研讨会、第27届中国控制会议、中国电机工程学会第十届青年学术会议等;最大风能捕获的相关文献由345位作者贡献,包括吴捷、杨俊华、杨秦敏等。

最大风能捕获—发文量

期刊论文>

论文:105 占比:0.37%

会议论文>

论文:9 占比:0.03%

专利文献>

论文:28650 占比:99.60%

总计:28764篇

最大风能捕获—发文趋势图

最大风能捕获

-研究学者

  • 吴捷
  • 杨俊华
  • 杨秦敏
  • 杨金明
  • 陈积明
  • 杨苹
  • 焦绪国
  • 蔡旭
  • 叶杭冶
  • 夏长亮
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  • 会议论文
  • 专利文献

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    • 王鸿儒; 张志刚
    • 摘要: 小型永磁直驱风力发电系统具有非线性、强耦合的特点以及小重量和低成本的应用要求,其若采用传统的叶尖速比法进行风电机组最大风能捕获控制,在风速变化时,会存在动态性能不佳的问题。为此,文章提出了一种基于逆系统的最大风能捕获方法,其以永磁同步发电机(PMSG)为对象,引入逆系统的方法对PMSG系统进行线性补偿。该方法需要对PMSG的转子角度、速度以及机械转矩进行观测,采用常规机械式传感器会增加小型风力发电系统的重量、体积以及设计成本,而传统的无传感器技术(如滑模观测器)又存在自身抖动大的问题。对此,文章为所提方法设计了一种改进型滑模观测器。仿真结果表明,所提控制方法相较于传统的叶尖速比法具有更好的动态解耦性能,且改进后的滑模观测器能够较大程度地消除自身抖动,并可实现在全速域内准确地观测PMSG的转子角度、速度以及机械转矩。
    • 邢小文; 孟洪民; 谢利理
    • 摘要: 由风速波动性和间歇性引起的风机出力波动对电网安全稳定运行造成不利影响.因此,平抑输出功率波动性成为大惯量风机控制的主要研究目标之一.首先对影响风功率波动性的因素进行梳理,然后以风能利用效率为标准,将输出功率平押策略分为低风能利用型、高风能利用型和其它类型三类.从基本原理、方法、优缺点和研究趋势等多方面,对各类平抑策略进行全面综述和总结,对比归纳了不同控制策略的本质,并对未来研究方向进行讨论.此外,文中亦对风轮转动惯量与风能利用效率、功率波动性关系进行深入分析,论证了大惯量风机功率波动平抑过程中兼顾效率的重要性.%Power fluctuations of wind turbine caused by random and interim wind speed may bring negative influences on power system stability.Thus,power smoothing becomes one of the most important control objectives in control system of large-inertia wind turbine.This paper firstly analysis the factors that influence power fluctuations.Then power smoothing strategies are classified into three types,low efficiency power smoothing strategy,high efficiency power smoothing strategy and other strategy.The basic principle and theories of each type are reviewed and discussed in detail.The future research emphases of each type are discussed as well.In addition,the relationship between turbine inertia,power fluctuations and efficiency are analyzed in depth,and the importance of taking power smoothing and efficiency into account at the same is proved.
    • 娄尧林; 蔡旭; 叶杭冶; 何国栋
    • 摘要: It is always an essential objective for designers to enhance the energy efficiency of variable-speed, pitch-regulated wind turbines. The speed-torque look-up table is commonly adopted to achieve the optimal tip-speed ratio tracking in large-scale commercialized wind turbines. Because of the constraints of the grid connection speed and rated speed of generator, only big slope transition curves can be used to characterize the relationship between torque and speed in the boundary speed of the look-up table. Nevertheless, this method affects the stability of the output power, shortens the optimal tip speed, and reduces energy yield. This paper presents an optimal control strategy with torque following the variation of generator speed optimally. That is, a unified PI (proportional integral) controller dynamically set the limit of the output torque according to generator speed. The strategy achieves the controlling target of maximal wind energy capture below rated wind speed by solving tricky problems about immeasurability of wind speed and intractability of wind speed variation.Simulation analysis and field test demonstrate that the algorithm has good stability and dynamic performance, which improves the energy efficiency. This control algorithm is easy to be realized and popularized in wind energy industry; accordingly, it has high practical engineering significance.%提高变速变桨风电机组的能效转化率是风电机组整机设计人员追求的重要目标.大型商业化机组中,通常采用转速-转矩查表法来实现最佳叶尖速比跟踪.由于受到发电机最小并网转速与额定转速的约束,查表法在这两个边界转速上,只能采用斜率较大的过渡曲线来表征转矩与转速的对应关系,这影响了输出功率的平稳性,缩短了最佳叶尖速区,减少了机组的发电量.提出一种转矩随动发电机转速变化的风电机组最优发电控制实现方法:在全风速运行范围内,基于一个统一比例积分(PI)转速转矩控制器,根据发电机转速,动态设定输出转矩限值的方法.该方法可解决风速的不可测量性、风速变化不可跟踪性等难题,实现额定风速以下最大风能捕获的控制目标.仿真分析与现场测试结果表明,该算法具有良好的稳定性与动态性能,提升了机组的能效转化率.该控制算法逻辑实现简单,易于风电行业控制器推广,有较高的实际工程意义.
    • 李冰; 刘石
    • 摘要: 为了最大限度地利用风能,提高风力发电系统的效率,实现无刷双馈风力发电机(BDFIG)的最大风能捕获,提出了一种针对无刷双馈风力发电机的直接功率控制策略.与矢量控制相比,直接功率控制(DPC)省去了复杂的坐标变换,计算量较小,结构简单,提高了系统的动态性能.通过设计滞环控制器与电压矢量表选择合适的电压矢量,能够实现无刷双馈发电机的有功功率与无功功率的解耦控制,并可以保证在风力机转速变化时,功率绕组的输出电流频率保持不变.利用MAT-LAB/Smulink搭建了无刷双馈风力发电机的直接功率控制模型,对不同风速时的无刷双馈风力发电机运行模式进行了仿真.仿真结果表明,所提方法能够实现对最大风能的快速捕获,并可以实现有功功率与无功功率的解耦控制,提高了无刷双馈风力发电系统的发电效率.%In order to maximize the utilization of wind energy,improve the efficiency of wind power generation system,and realize the maximum power point tracking(MPPT) of brushless doubly fed induction generator (BDFIG),a direct power control(DPC) strategy is proposed to realize the variable speed constant frequency of BDFIG.Compared with vector control,the main advantages of DPC are without coordinate transformation,low computational load,simple structure and the improved system dynamic properties.Using two hysteresis comparators and votage vector table to choice proper voltage vector can realize the control of the active power and reactive power independently.By establishing the DPC control system based on MATLAB/Simulink,the operation mode of BDFIG wind generator was simulated with different wind speeds.The simulation results show that the proposed method can achieve maximum wind energy capture by decoupling control on the output of active power and reactive power,and enhanced the utilization efficiency of BDFIG.
    • 韩琦; 王智
    • 摘要: 研究了风电机组的频率下垂控制策略.在非最大风能捕获下,预留一定的风能,当系统频率变化时,使得风电机组能与传统的同步发电机一样,参与系统调频,能够有效改善系统的频率变化.基于电磁暂态软件PSCAD/EMTDC,验证该控制策略的可行性与有效性.
    • 吴忠强; 王昕懿; 赵习博
    • 摘要: Taking Doubly-fed Induction Generator (DFIG) as the research object,and considering the mathematical model of the rotor flux oriented under two-phase synchronous rotating coordinate system as two subsystems,the backstepping terminal sliding mode controllers are designed for them respectively to realize maximal wind energy capture.The observer of DFIG speed and flux is designed by nonsingular terminal sliding mode,moreover,and high-order terminal sliding mode surface is used to suppress chattering effectively.The simulation results showed that the designed observer and controller can realize no static error tracking and have the characteristics of quick response,good robustness and high stability accuracy.%以双馈风力发电机(DFIG)为研究对象,将两相同步旋转坐标系下的转子磁链定向数学模型看作两个子系统,分别设计Backstepping终端滑模控制器,实现最大风能捕获.设计一种基于非奇异终端滑模的DFIG转速和磁链观测器,采用高阶终端滑模面有效抑制抖振.仿真结果表明所设计的观测器和控制器均具有强鲁棒性,能实现无静差跟踪,系统响应快,稳态精度高.
    • 吴昊峰; 王向东; 李树江
    • 摘要: 为了改进模糊控制爬山法捕获最大风能,模糊控制器输出增量没有根据风速大小而改变的问题,对风力机特性和以往基于模糊控制捕获最大风能的方法进行分析,提出了一种新的模糊控制的风力机最大风能捕获的方法.将功率增量,前一时刻转速增量,风速增量,风速信号用在模糊控制系统中改善模糊控制器的性能.通过对1.5 MW风力机的simulink模型,用Matlab仿真,说明了新方法性能比"旧"方法好.%In order to improve the ability of capturing maximum wind energy of wind turbines, The output increment of fuzzy controller does not change according to wind speed. After the wind turbine characteristics and old method with capturing maximum wind energy by fuzzy control have been analyzed,a novel method of capturing maximum wind energy based on fuzzy control is proposed, in which the power increment, former rotating speed increment , wind speed increment and wind speed signals are all adopted in fuzzy logical system to improve the performance. With the Matlab, by a simulation for 1.5 MW wind turbine, it shows that the proposed method are of better performance than"old"fuzzy controller.
    • 曾令全; 王美琪; 张佳琦; 冯天舒
    • 摘要: 为了解决当风力发电机参数辨识错误或有扰动误差时,最大风能捕获策略出现的风能利用率下降问题,根据已知的风力发电机特性和滑模变结构系统理论,提出了在低于额定风速条件下,变速风力发电机的非线性反馈控制方案.通过使用带有风速估计的滑模控制器,利用转速值进行最大风能捕获.构建系统模型进行仿真并与传统控制策略进行分析比较,结果证实了文中控制策略的正确性和有效性.%To solve the problem that the maximum wind energy capture based wind energy utilization rate decreases due to the error in parameter identification of wind turbine or wind speed fluctuation,According to the known characteristics of wind turbines and variable structure control theory,under the condition of below rated wind speed,put forward a nonlinear feedback control scheme for variable speed wind turbines without wind speed measurements.The best torque method of the maximum wind energy capture are proposed for better performance,using sliding mode controller with wind speed estimation,making use of the rotate speed value for maximum power tracking,and there is no need for wind speed measured or estimated.Finally,the system model was built and simulation results were compared with those of the known method,which showed the correctness and effectiveness of the proposed control strategy.
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