In this paper, a low cost wind turbine emulator (WTE) is designed and implemented. The aim is accurately simulating the nonlinear behaviors and characteristics of a real wind turbine. It is well known that each wind turbine has its own power coefficient characteristic. This work contains an analysis of the WTE by considering the main power coefficient models known in literature. Speed sensor is one of the most important component used to provide the shaft speed information. This latter will increase greatly the system cost and volume of the control scheme. In our work, we propose cheapest solution by using a second-order sliding-mode speed observer based on super-twisting algorithm. Note that the accurate speed estimation is essential to maintain good simulation of wind turbine characteristics. The WTE closed loop operation is ensured by the fuzzy logic technique. Experimental results confirm the effectiveness of the proposed sensorless WTE solution.

本文设计并实现了一种低成本的风力发电机仿真器（WTE）。目的是精确模拟真实风力涡轮机的非线性行为和特性。众所周知，每个风力涡轮机都有其自己的功率系数特性。这项工作通过考虑文献中已知的主要功率系数模型对WTE进行了分析。速度传感器是用于提供轴速度信息的最重要的组件之一。后者将大大增加控制方案的系统成本和体积。在我们的工作中，我们通过使用基于超扭曲算法的二阶滑模速度观测器，提出了最便宜的解决方案。请注意，准确的速度估算对于维持良好的风力发电机特性仿真至关重要。WTE闭环操作由模糊逻辑技术确保。实验结果证实了所提出的无传感器WTE解决方案的有效性。