摘要
基于定子磁链定向矢量控制原理,分析双馈风力发电系统并网运行机理,提出了系统空载并网模糊PI控制策略。在此基础上,该文对双馈风力发电系统空载并网过程进行了研究,并与模糊控制及PI控制进行比较。研究结果表明,并网模糊PI控制策略的动态响应快,稳态精度高,对电网电压波动和电机参数变化具有较强的鲁棒性,且并网过渡过程短暂,并网前后运行平稳。模糊PI控制方式既具有模糊控制器动态响应快、鲁棒性强的特点,又兼有PI控制器稳态精度高的优点,是一种优良的并网控制策略。
Based on stator field-oriented vector control technique and cutting-in operational mechanism, a new fuzzy PI controller for no-load cutting-in control scheme of doubly fed induction generator （DFIG） in wind power system was prop- osed. By these, the fuzzy PI controller for investigation of no-load cutting-in range of DFIG in wind-power system was pr- esented, comparing with fuzzy controller and PI controller. The results show that fuzzy PI controller produces rapidly dy- namic response and highly steady precision, and ensures strongest robustness under variable grid voltage conditions and variable DFIG parameters conditions. The whole cutting-in transitional course is transient. Therefore fuzzy PI controller behaves excellent cutting-in capability with both the excellence of rapidly dynamic response and strong robustness of fuzzy controller and highly steady precision of PI controller for no-load cutting-in control scheme.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第6期794-798,共5页
Acta Energiae Solaris Sinica
基金
国家杰出青年科学基金(50825701)
国家自然科学基金(50777044)
教育部新世纪优秀人才支持计划(NCET-06-0246)
天津市科技支撑计划重点项目(08ZCKFGX03400)
天津市应用基础及前沿技术研究计划重点项目(07JCZDJC09400)
天津市应用基础及前沿技术研究计划重点项目(08.JCZDJC17600)
关键词
双馈发电机
风力发电
空载并网
模糊PI控制
doubly led induction generator（DFIG）
wind power generation
no-load cutting-in control
fuzzy PI control
