摘要
文章在DFIG网侧变流器扰动运行与电网电压不平衡运行的基础上,提出一种基于模糊PID控制的电流微分前馈与负序电流抑制相结合的控制方法。电流微分前馈能有效加快扰动下网侧变流器调节时间和精度;电网不平衡下附加负序电流抑制的方法简单有效,具有很强的可实施性。采用模糊PID控制,参数能够在线调整,提高系统鲁棒性与响应速度。在Matlab/Simulink中搭建了3 MW双馈风机仿真模型,试验结果验证了文中方法的有效性。
Based on comprehensive analysis of grid side converter （GSC） disturbance operation and grid voltage unbalance operation,a fuzzy PID control which integrates control of current differential feed-forward and negative sequence current control is put forward. The current differential feed-for- ward can effectively accelerate the adjustment time and accuracy of GSC ; The method of additional negative sequence current under unbalanced grid is simple and effective, which also has a strong practicalness. The parameters of the fuzzy PID control can adjust online to improve the system robustness and response speed. Finally the effectiveness of the proposed control strategy is confirmed through a 3 MW DFIG established in Matlab/Simulink.
出处
《可再生能源》
CAS
北大核心
2013年第12期30-34,共5页
Renewable Energy Resources
基金
国家自然科学基金(51207095)
辽宁省重大攻关计划项目(2011220017)
辽宁省重大攻关计划项目(2011220042)
