电力系统及其自动化学报2017，Vol.29Issue(6)：29-34,6.DOI:10.3969/j.issn.1003-8930.2017.06.005
Z源风力发电并网无差拍控制策略
Deadbeat Control Strategy of Z-source Grid-connected Wind Power Generation
摘要
Abstract
Due to the change of wind speed change,system power and current are vulnerable to external factors. In or-der to improve the system stability,through the analysis of Z-source principle,deadbeat current inner-loop control strat-egy is established based on Z-source wind power generation. By stabilizing the Z-source capacitance voltage,shoot-through duty ratios are adjusted realtime to adjust the speed of maximum power point tracking(MPPT). At the same time,virtual flux observer is applied to the system,with which grid voltage phase is calculated to improve the reliability of the system. The simulation is built in MATLAB/Simulink,and the simulation results verify the validity of the control strategy. The grid-connected current waveform is sine mostly. Moreover,the system runs stably,and it can realize unit power factor operation.关键词
风力发电/三相Z源并网逆变器/无差拍控制/最大功率点追踪/虚拟磁链观测器Key words
wind power generation/three-phase Z-source grid-connected inverter/deadbeat control/maximum power point tracking(MPPT)/virtual flux observer分类
信息技术与安全科学引用本文复制引用
黄守道,潘思思,张阳..Z源风力发电并网无差拍控制策略[J].电力系统及其自动化学报,2017,29(6):29-34,6.基金项目
国家自然科学基金资助项目(51377050) （51377050）
