| 采用极值搜索法的风电机组最大风能追踪控制 |
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| 引用本文： | 赵亮,吕剑虹,向文国. 采用极值搜索法的风电机组最大风能追踪控制[J]. 电网技术, 2011, 0(5): 171-176 |
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| 作者姓名： | 赵亮 吕剑虹 向文国 |
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| 作者单位： | 东南大学能源与环境学院; |
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| 摘 要： | 针对风电机组额定风速以下最大风能追踪控制问题,采用极值搜索的方法,通过对叠加风速扰动的叶尖速比和功率系数进行傅里叶变换,获得相位差信息,确定叶尖速比的变化方向。采用S形传输函数给出叶尖速比的变化量,降低了控制量的变化幅度,柔化了控制作用,进而控制转速跟踪最佳叶尖速比,使运行点向最佳运行点移动。通过对某6 kW风电机组在额定风速以下进行仿真研究发现,该方法不需要了解风电机组精确的参数和数学模型,能够控制风力机转速较好地跟踪风速变化,保持最佳叶尖速比和最大功率系数,减小功率动态跟踪误差,在实现最大风能捕获的同时,降低机组机械载荷。
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| 关 键 词： | 风电机组 最大风能追踪 极值搜索法 柔化控制 |
Maximum Wind Energy Tracking Control of Wind Power Generation Unit With Extremum Seeking |
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| ZHAO Liang,Lü Jianhong,XIANG Wenguo. Maximum Wind Energy Tracking Control of Wind Power Generation Unit With Extremum Seeking[J]. Power System Technology, 2011, 0(5): 171-176 |
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| Authors: | ZHAO Liang Lü Jianhong XIANG Wenguo |
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| Affiliation: | ZHAO Liang,Lü Jianhong,XIANG Wenguo(School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu Province,China) |
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| Abstract: | To tackle the maximum wind energy tracking while actual wind speed is lower than rated wind speed of wind power generation unit,by use of extremum seeking and by means of performing Fourier transform to tip speed ratio(TSR) and power coefficient superposing wind disturbance the information of phase difference is obtained to determine the variation direction of TSR.The variation of TSR is calculated by Sigmoid function,thus the variation amplitude of control variable is reduced and the control action is soft... |
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| Keywords: | wind power generation unit maximum wind energy track extremum seeking soften control |
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