| 最大功率跟踪控制下大型风电机组的轴系扭振分析及抑制 |
| 杨文韬1, 耿华1, 肖帅2, 杨耕1 |
| 1. 清华大学自动化系, 北京 100084; 2. 北京控制工程研究所, 北京 100190 |
| Analysis and suppression for shaft torsional vibrations in large wind turbines with MPPT control |
| YANG Wentao1, GENG Hua1, XIAO Shuai2, YANG Geng1 |
| 1. Department of Automation, Tsinghua University, Beijing 100084, China; 2. Beijing Institute of Control Engineering, Beijing 100190, China |
摘要:
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| 摘要随着风电机组向大型化和轻量化发展,机组传动轴扭振现象加剧,风机轴系扭振的研究变得越来越重要。该文分析了3种常用的风机最大功率跟踪控制方法下系统轴系扭振模态,发现利用发电机转速反馈的不同控制方法,都能够提升传动轴阻尼。据此提出了一种最大功率跟踪控制的改进方法,该方法在原有转矩指令的基础上叠加了传动轴扭振抑制指令,在保证最大功率跟踪的同时抑制了风机传动轴扭振。通过软件仿真,验证了上述理论分析以及改进方法的有效性。 | ||||||
| 关键词 ：大型风电机组,最大功率跟踪,传动轴,扭振 | ||||||
| Abstract：As wind turbines become larger and lighter, they are experiencing more severe shaft torsional vibrations. Therefore, the suppression of turbine shaft torsional vibrations is becoming more important. This paper compares three common maximum power point tracking(MPPT) control algorithms. All three methods use generator speed feedback to enhance the drive shaft damping. An advanced conventional MPPT control method was then developed with an extra order added to the MPPT command to suppress shaft torsional vibrations. The result suppresses the torsion vibrations of the drive shaft, while ensuring that the wind turbines work at the maximum power point. Simulations verify the effectiveness of the theoretical analyses and this method. | ||||||
| Key words：large wind turbinesmaximum power point trackingdrive shafttorsion vibration | ||||||
| 收稿日期: 2014-11-13 出版日期: 2015-12-01 | ||||||
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| 通讯作者:杨耕,教授,E-mail:yanggeng@tsinghua.edu.cnE-mail: yanggeng@tsinghua.edu.cn | ||||||
| 引用本文: |
| 杨文韬, 耿华, 肖帅, 杨耕. 最大功率跟踪控制下大型风电机组的轴系扭振分析及抑制[J]. 清华大学学报（自然科学版）, 2015, 55(11): 1171-1177. YANG Wentao, GENG Hua, XIAO Shuai, YANG Geng. Analysis and suppression for shaft torsional vibrations in large wind turbines with MPPT control. Journal of Tsinghua University(Science and Technology), 2015, 55(11): 1171-1177. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.21.018或 http://jst.tsinghuajournals.com/CN/Y2015/V55/I11/1171 |
图表:
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| 图１ 功率系数与叶尖速比、桨距角的函数关系图 |
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| 图２ 风机第二工作区转速闭环控制方法系统框图 |
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| 表１ 仿真采用的风机参数 |
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| 图３ 不同控制器参数对转速闭环系统特征值实部的影响 |
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| 图４ 风机第二工作区功率闭环控制方法系统框图 |
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| 图５ 不同控制器参数对功率闭环系统特征值实部的影响 |
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| 图６ CP与λ比函数关系 |
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| 图７ 加入扭振抑制器的MPPT控制系统框图 |
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| 图８ 改进后的最优转矩法工作原理 |
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| 表２ 不同反馈信号和控制方法下系统特征值 |
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| 表３ 电机转速反馈下不同控制方法对应系统阻尼 |
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| 图９ 湍流风速下最优转矩控制系统响应 |
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| 图１０ 湍流风速下改进后的最优转矩控制系统响应 |
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