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首页> 外文期刊>Electric Power Components and Systems >A Robust H_∞ Controller Based Gain-scheduled Approach for the Power Smoothing of Wind Turbine Generator with a Battery Energy Storage System
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A Robust H_∞ Controller Based Gain-scheduled Approach for the Power Smoothing of Wind Turbine Generator with a Battery Energy Storage System

机译：基于鲁棒H_∞控制器的增益调度方法，用于带电池储能系统的风力发电机功率平滑

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摘要

Output power fluctuation of the wind turbine generator is a serious issue for power systems. The battery energy storage system is installed to the power system to solve this problem. However, the large battery energy storage system can increase the capital cost of the wind turbine generator system. Hence, the capacity of the battery should be reduced as much as possible. This article presents an H_∞ based control method for the output power smoothing method of the wind turbine generator by using a battery energy storage system. The output power fluctuation of the wind turbine generator is considered in the frequency domain. Low-frequency fluctuations are smoothed by pitch angle control of the wind turbine generator, while high-frequency variations are smoothed by charge or discharge of the battery energy storage system, respectively. The battery energy storage system's capacity and mechanical stress of wind turbine blades can be reduced by the proposed method. In addition, the gain-scheduled control theory is applied to the pitch angle control system of the wind turbine generator. Therefore, the robust control performance for high non-linearities of the wind turbine generator model can be achieved. The effectiveness of the proposed method is validated by numerical simulations.
机译：对于电力系统而言，风力涡轮发电机的输出功率波动是一个严重的问题。电池储能系统已安装到电源系统以解决此问题。然而，大型电池能量存储系统会增加风力涡轮发电机系统的投资成本。因此，应尽可能降低电池容量。本文提出了一种基于H_∞的控制方法，用于使用电池储能系统的风力发电机的输出功率平滑方法。在频域中考虑了风力涡轮发电机的输出功率波动。低频波动通过风力涡轮发电机的俯仰角控制得到平滑，而高频变化则通过电池储能系统的充电或放电得到平滑。该方法可以降低电池储能系统的容量和风力发电机叶片的机械应力。另外，增益调度控制理论被应用于风力涡轮发电机的桨距角控制系统。因此，可以实现针对风力涡轮发电机模型的高非线性的鲁棒控制性能。数值仿真验证了该方法的有效性。

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