风能转换系统的MPPT变增益极值搜索控制

被引:7
作者
纪志成
朱芸
孟涛
机构
[1] 江南大学电气自动化研究所
关键词
风能转换系统; 最大功率点追踪控制; 极值搜索控制; 变增益;
D O I
10.15938/j.emc.2009.03.020
中图分类号
TM614 [风能发电];
学科分类号
0807 ;
摘要
针对传统最大功率点追踪(MPPT)极值搜索法固定积分增益存在的不足,依据不同积分系数对系统的影响,提出了一种MPPT变增益极值搜索法,使积分增益随叶尖速比和功率系数之间平均相位移的变化而变化。仿真结果表明,采用改进后的MPPT极值搜索法,平均风能捕获率较传统的极值搜索法有所提高,且当系统达到稳定运行点后,叶尖速比的标准差较积分增益为0.01时降低了0.05,有效地抑制了系统在稳定点附近的振动,提高了系统的动态性能。
引用
收藏
页码:414 / 418
页数:5
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