摘要
为了提高双馈感应风力发电机(DFIG)控制系统动态响应速度,提出一种基于电网电压定向直接功率控制(DPC)的双馈风力发电运行综合控制策略,实现了与矢量控制相同的无冲击电流并网及有功、无功解耦控制功能,建立了基于直接功率控制的双馈风力发电机空载并网、稳态运行及电网发生故障情况下低电压穿越的控制模型,并在3kW的双馈风力发电实验系统上对以上控制策略进行了综合实验研究,实验结果证明了所提控制策略实现了无冲击电流柔性空载并网,稳态时输出功率解耦控制,以及电网电压瞬降时的低电压穿越。
In order to improve the dynamic response of double-fed induction generator (DFIG) , we proposed a combination control strategy on the basis of the direct power control (DPC). The combination control method possesses the same performances as vector control, and has good dynamic response and simple control structure. Moreover, we established a control model for idle load grid-connection, steady state operation, and low voltage ride through (LVRT) for DFIG, and realized the flexible grid-connection, decoupled control for active and reactive power control, and LVRT operation. Experimental results based on 3kW DFIG test system verify the accuracy and validity of this control strategy.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第7期1818-1824,共7页
High Voltage Engineering
基金
上海市科委2010年度部分地方院校能力建设专项(10160501700)
江苏省高校自然科学基金(10KJD480004)~~