基于最大功率点跟踪的最优控制风能转换系统

A. Nadhir, T. Hiyama
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引用次数: 7

摘要

本文研究了在风力机模型和参数未知的情况下,以能量转换最大化为目标,在部分负荷区域工作的水平轴定距变速小功率风力发电系统的控制问题。最大功率点跟踪(MPPT)是一种由寻优方法衍生而来的控制方法,其目的是使工作点的平均位置接近最优。调整转速控制回路的参考值,使涡轮机在当前风速值的最大功率附近运行。为了确定这个参考值是否必须增加或减少,有必要估计操作点相对于Pwt(Wl)曲线最大值的当前位置。通过数值模拟对基于该估计的控制律进行了初步验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Maximum Power Point Tracking Based Optimal Control Wind Energy Conversion System
Problem of control associated wind energy conversion systems using horizontal-axis fixed-pitch variable-speed low-power, working in the partial load region, consisting in the energy conversion maximization, is approached here under the assumption that the wind turbine model and its parameters are poorly known. Maximum Power Point Tracking (MPPT) by using an approach derived from the optimum seeking methods category, is the proposed control solution aims at driving the average position of the operating point near to optimality. The reference of the rotational speed control loop is adjusted such that the turbine operates around maximum power for the current wind speed value. In order to establish whether this reference must be either increased or decreased, it is necessary to estimate the current position of the operating point in relation to the maximum of Pwt(Wl) curve. Numerical simulations are used for preliminary checking the control law based on this estimation.
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