自适应变步长最大风能捕获算法

被引:5
作者
李树江
蔡海锋
邓金鹏
孔丽新
机构
[1] 沈阳工业大学信息科学与工程学院辽宁省教育厅重点实验室
关键词
风力发电; 最大风能捕获; 叶尖速比; 爬山搜索法;
D O I
10.14107/j.cnki.kzgc.2012.01.019
中图分类号
TM614 [风能发电];
学科分类号
0807 ;
摘要
风能具有随机性、不稳定性的特点,为了提高风力发电系统中风能的利用效率,在比较各种最大风能捕获算法的基础上,分析了爬山搜索法和叶尖速比法的不足,提出了自适应变步长搜索算法来捕获最大风能。通过改进爬山搜索法的变步长策略,明显加快了搜索速度,通过引入初始估计叶尖速比值,大大缩小了搜索范围。该算法不需要实时检测准确风速,不依赖风力机最佳功率曲线,有效地降低了成本,提高风力发电的效率。文中重点分析了算法的自适应性和变步长策略,仿真结果表明,该算法能够使风力机更快速到达最大功率点,动态响应快,收敛性好。
引用
收藏
页码:69 / 72
页数:4
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