电力系统及其自动化学报2019，Vol.31Issue(5)：8-12,5.DOI:10.3969/j.issn.1003-8930.2019.05.002
改进滑模极值搜索控制在风能转换系统最大功率追踪的应用
Application of Improved Sliding Mode Extremum Seeking Control in MPPT of Wind Energy Conversion System
摘要
Abstract
Considering that the problems of steady oscillations and poor followability at step wind speed occur in the maximum power point tracking(MPPT)process of permanent magnet wind energy conversion system(WECS)when us?ing the traditional sliding mode extremum seeking control(SMESC)algorithm,an improved SMESC algorithm is pro?posed,which eliminates the steady-state oscillations. To improve the tracking accuracy,the mathematical relation be?tween the steady-state amplitude of the DC-side reference voltage and the parameters of the algorithm is deduced and op?timized further. In addition,a sliding mode power controller,which can generate the switching signal directly without a carrier signal,is implemented to improve the followability of WECS. In this way,the process of parameter adjustment in the traditional PI controller of WECS is eliminated. Finally,the validity and practicability of the proposed algorithm are verified through a small-scale permanent magnet WECS built in MATLAB.关键词
最大功率追踪/滑模极值搜索控制/功率滑模控制器/风能转换系统Key words
maximum power point tracking(MPPT)/sliding mode extremum seeking control(SMESC)/sliding mode power controller/wind energy conversion system(WECS)分类
信息技术与安全科学引用本文复制引用
石季英,胡露,秦子健,凌乐陶..改进滑模极值搜索控制在风能转换系统最大功率追踪的应用[J].电力系统及其自动化学报,2019,31(5):8-12,5.基金项目
国家重点研究发展计划资助项目(2017YFB0903000) （2017YFB0903000）
国家自然科学基金资助项目(61571324) （61571324）
天津市自然科学基金资助重点项目(16JCZDJC30900) （16JCZDJC30900）
国际科技合作专项资助项目(2013DFA11040) （2013DFA11040）
