Increasing the Efficiency of Wind Turbines through Understanding of Their Transient Responses

通过了解风力涡轮机的瞬态响应来提高风力涡轮机的效率

• 批准号: 1634396
• 负责人: Kim Stelson
• 金额: $ 29.6万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1634396&HistoricalAwards=false
• 关键词: Increasing; Efficiency; Wind; Turbines; through

Global demand for renewable energy is increasing, and wind power is the fastest growing source of renewable energy. Current control methods for wind turbines are designed for steady-state wind and are unable to capture the extra energy from turbulence. To capture more energy from unsteady wind, the complex flow over a pitching blade needs to be understood. This award supports fundamental research to understand wind turbine response to time-varying wind and blade pitch facilitating the creation of new control laws for wind turbines.The research objective of this project is to understand the transient response of wind turbines to control law and time varying wind and blade pitch. In turbulent flow, the wind turbine response and the control law are inter-connected and must be treated as a complete nonlinear, time-varying system. For this reason, understanding how the control law affects the overall system response is included in the research objective. To achieve the research objective, load cell measurements of lift force, drag force, and moment of wind turbine blades under unsteady wind and blade pitch conditions will be collected at the large closed return wind tunnel facility at the University of Minnesota. A fan driven by a variable frequency drive producing a maximum wind velocity of 38 m/s controls the wind speed. The pitch blade angle will be controlled by an electric motor in the range of -2 to +4 degrees. The frequency content of the time-varying wind and blade pitch motion inputs will cover the range of interest in the wind spectrum. Control laws to be investigated include torque-based control and state-based control.

全球对可再生能源的需求不断增加，而风电是增长最快的可再生能源。目前的风力涡轮机控制方法是针对稳态风力而设计的，无法从湍流中捕获额外的能量。为了从不稳定的风中捕获更多能量，需要了解变桨叶片上的复杂流动。该奖项支持基础研究，以了解风力涡轮机对时变风和叶片桨距的响应，从而促进为风力涡轮机创建新的控制律。该项目的研究目标是了解风力涡轮机对控制律和时变的瞬态响应风和叶片桨距。在湍流中，风力涡轮机响应和控制律是相互关联的，必须被视为一个完整的非线性时变系统。因此，了解控制律如何影响整个系统响应被纳入研究目标。为了实现研究目标，将在明尼苏达大学的大型封闭回程风洞设施中收集风力涡轮机叶片在不稳定风和叶片变桨距条件下的升力、阻力和力矩的测力传感器测量结果。由变频驱动器驱动的风扇产生最大风速 38 m/s 来控制风速。桨距叶片角度将由电动机控制在-2 至+4 度范围内。 随时间变化的风和叶片桨距运动输入的频率内容将覆盖风谱中感兴趣的范围。要研究的控制律包括基于扭矩的控制和基于状态的控制。

项目成果

Design of a Power Regenerative Hydrostatic Wind Turbine Test Platform

能量再生式静压风力发电机试验平台设计

• DOI: 10.5739/jfpsij.11.130
• 发表时间: 2019
• 期刊: JFPS International Journal of Fluid Power System
• 作者: Mohanty, Biswaranjan;Wang, Feng;A. Stelson, Kim
• 通讯作者: A. Stelson, Kim

High Fidelity Dynamic Modeling and Control of Power Regenerative Hydrostatic Wind Turbine Test Platform

功率再生静压风电机组试验平台高保真动态建模与控制

• DOI: 10.1115/fpmc2018-8900
• 发表时间: 2018
• 期刊: High Fidelity Dynamic Modeling and Control of Power Regenerative Hydrostatic Wind Turbine Test Platform
• 作者: Mohanty, Biswaranjan;Stelson, Kim A.
• 通讯作者: Stelson, Kim A.