基于有限频域的模型降阶方法在浮式风机上的应用
Application of Finite-Frequency Model Reduction Method to Floating Wind Turbine

DOI: 10.12677/CSA.2021.1111278, PP. 2742-2751

Keywords: 有限频域，浮式风机，线性切换系统，时滞，动态建模
Finite-Frequency, Floating Wind Turbine, Switched Linear Systems, Time-Delayed, Dynamic Modelling

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Abstract:

本文研究了海上浮式风力发电机组的模型降阶问题。首先，利用实测数据建立了海上浮式风力发电机组的线性切换离散时滞模型。其次，我们提出了可以估计有限频域性能的指标，并且引入一些松弛矩阵。这些方法可以获得有限频域性能条件和稳定性判据，并且实现风机模型从高阶到低阶的转换，降低了结果的保守性和计算复杂度。最后，通过一个数值算例说明了该方法的有效性。
This paper studies the model reduction of offshore floating wind turbine. Firstly, we use the measured data to construct the switched linear discrete time-delay model of offshore floating wind turbine. Secondly, we propose an index that can estimate the finite-frequency index, and introduce some relaxation matrices. These methods can obtain finite-frequency performance conditions and stability criteria, and realize the transformation of turbine model from high order to low order, which reduces the conservatism and computational complexity of the results. Finally, a numerical example is given to illustrate the effectiveness of the proposed method.

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