通过应用控制系统组合来控制风力轮塔在外力下的振动
Y A Amer1, A T El-Sayed2, M M Agwa3
1Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt.
Scientific reports
|August 10, 2024
概括
本研究引入了联合立方负速控制 (CNVC) 和线性负加速度控制 (LNAC) 技术,以减少风力轮塔 (WTT) 的振动. 这种具有成本效益的方法通过减轻过度振动引起的疲劳来提高WTT性能和寿命.
科学领域:
- 工程 工程师 工程师 工程师
- 可再生能源系统可再生能源系统
- 控制振动,控制振动.
背景情况:
- 风能是全球能源生产的关键组成部分,将重点从传统燃料来源转移.
- 风力轮塔 (WTT) 中的振动会对性能产生负面影响,减少使用寿命,并导致疲劳,因此需要有效的控制策略.
- 现有的研究突出显示,需要成本效益高的解决方案来管理WTT的结构完整性.
研究的目的:
- 调查和确定风力轮塔的最有效和最具成本效益的振动缓冲技术.
- 评估一种用于减轻WTT振动的新型组合控制策略的性能.
- 分析外部力量对WTTs非线性动态系统的影响.
主要方法:
- 对各种受控系统进行了数值测试,以评估振动抑制的有效性.
- 一种结合立方负速控制 (CNVC) 和线性负加速度控制 (LNAC) 的新技术是使用平均化技术的近似方法开发的.
- 该系统的两度自由度 (2-DOF) 微分合方程在外力下进行了分析.
- 在控制实施之前和之后,对振动值,稳定性,频率响应和时间历史 (使用RK-4) 进行了数值分析.
主要成果:
- 结合CNVC和LNAC技术被证明是WTT振动缓解的最有效和最具成本效益的解决方案.
- 数字模拟证实了拟议的控制策略在减少振动方面的有效性.
- 该研究对频率响应方程和时间历史分析进行了数值和近似解决方案的验证.
结论:
- 集成的CNVC和LNAC控制战略为提高WTT性能和延长其运营寿命提供了一个有希望的解决方案.
- 这项研究提供了一种具有成本效益的方法,以减轻疲劳并提高风力轮机结构的可靠性.
- 对参数效应的进一步调查和与现有研究的比较强调了这种振动控制方法的重要性.
相关概念视频
Turbine-Governor Control
187
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
187
Generator Voltage Control
137
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
137
Wind Turbine Machine Models
117
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
117
Feedback control systems
298
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
298
Stability of structures
159
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
159
Control Systems
1.1K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
1.1K


