双馈式风力发电机低电压穿越控制策略  

Control Strategy of Low Voltage Ride-through for Double-fed Wind Generator

作　　者：高仕红[1] 张昌华[1] 耿东山[1] 李绍武[1] 

机构地区：[1]湖北民族学院信息工程学院,恩施445000

出　　处：《电力系统及其自动化学报》2014年第8期34-39,共6页Proceedings of the CSU-EPSA

基　　金：湖北省自然科学基金项目(2011CDC016)

摘　　要：为解决PI电流控制器作用下双馈式风力发电机低电压穿越能力弱的问题,提出基于改进三态滞环电流矢量控制VCBTLHC的复合电流控制策略。分析了VCBTLHC的原理,解决了VCBTLHC电压矢量选择的不确定现象,导出了VCBTLHC的开关表。在Matlab/Simulink中实施了复合电流控制中两个电流调节器之间的切换策略。仿真结果表明,所提出的低电压穿越控制策略提高了双馈式风力发电机的低电压穿越能力。In order to improve the low voltage ride-through capability under the action of PI current controller for DFIG, the hybrid current control strategy is proposed, and the method is on the basis of improved three-level hystere- sis current vector controller （VCBTLHC）. For VCBTLHC the principle is analyzed, the uncertainty of voltage vector selection is solved, and the improved switch table is deduced. In Matlab/simulink, the switching strategy of the two current regulators in the hybrid current control is implemented. Simulation results show that the proposed low voltage ride-through control strategy improves the low voltage ride-through capability of DFIG.

关 键 词：双馈式风力发电机 低电压穿越 复合电流控制 改进三态滞环电流矢量控制器 转子过电流 直流冲击电压 

分 类 号：TM614[电气工程—电力系统及自动化]