风力机

After compared with the experiment results, computational results have some error to theexperiment results, but it is same with the variation tendency of the experimental values.

随后对有小翼风力机和无小翼风力机的压力特性、速度特性进行了比较，得到了风力机叶尖加上小翼后，风力机叶端流场的变化。

Although horizontal - axis wind turbine is widely in use abroad , researchers of many countries pay more and more attention to the vertical - axis wind turbine for its superexcellence performance.

水平轴风力机是目前应用最广的一种风力发电机，垂直轴风力机有着优越的性能，并越来越被人们所重视。

This paper discusses about characteristics of wind load, and the theory of random applying on structure strength calculation of wind machine.

本文着重讨论了风作为随机载荷的基本特性及随机振动理论在风力机结构计算上的应用，提出了风力机结构的风振计算方法，并以ZFD13—20kW风力发电机为例进行了计算。

It is an important task to increase efficiency of systems and installation freedom between wind turbine and water pump and reduce maintenance for wind pumping systems.

提高小型提水风力机的效率，减少系统的维护量，增加风力机安装位置与水泵安装位置之间的自由度是推广利用风能提水的一项重要工作。

Finally, the calculated results are compared with experimental data and discussed in detail at different wind velocities and yawed angles of the wind turbine in this paper. The results illustrate that the calculation with the 3-D rotational effect improves the performance calculation and coincides with the experiment well to some extent.

最后，本文将风力机叶片在不同风速、侧偏角时的气动载荷计算结果与实验结果进行了比较和分析，结果表明，考虑旋转效应改进了风力机气动载荷的计算，总体上与实验值吻合得较好。

Combined with the nonlinear characteristics of wind turbines and the control strategy of generator-side converter and grid-side converter, used the design method for digital PI regulator, the back-to-back PWM converter on the wind-power system with direct-driven permanent magnet synchronous generator was built in the simulink of the MATLAB.

结合风力机的非线性特性和机侧变换器与网侧变换器的控制策略，应用数字PI调节器参数设计方法，在MATLAB/simulink仿真环境下构建了基于背靠背变换器的永磁直驱风力发电系统，系统包括风力机、永磁同步发电机、变频器、电网及其电气控制部分的数学模型，仿真结果表明风电系统的PI调节器参数设计合理且系统具有良好的运行特性。

With commercial CFD software,the characteristics of this wind wheel are analyzed with numerical simulations.

研究表明：这种聚能升力型立轴风力机比传统的升力型立轴风力机的风能利用率有非常大的提高。

A new-style lift-type vertical-axis wind wheel with wind collection-shield pattern suitable to arbitrary wind directions is researched in this paper.

本文提出了一种适合任意风向的新型聚能-遮蔽升力型立轴风力机，并应用计算流体力学方法，对这种风力机的气动性能进行了数值模拟。

Secondly, the structure and operating principle of imitation of the wind turbine based on DC motor were formulated and the control strategies were introduced.

第三，用Ansoft仿真软件建立了风力机模拟和SRG系统的仿真模型，分别对风力机特性的直流电动机模拟系统和SRG开环系统、电压闭环系统的建压过程及变负载、变转速动态过程、SRG风力发电系统最大风能追踪控制方案进行仿真分析，结果与理论吻合较好。

From the point of improving operating reliability of wind turbine, the researches on widely developing aerodynamics, structural dynamics, micrometeorology and its coupling problems are pointed out and a new point of view of increasing operating parameter measurement and data analysis is carried out.

从提高风力机运行可靠性的视点出发，提出了应广泛开展关于风力机的空气动力学、结构动力学、微气象学研究及其耦合问题研究，加大风力机运行参数测试与数据分析研究的新看法。关键词：风力机；结构动力学；空气动力学；系统稳定性

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。