作　　者： (李明）; (刘国荣）; (杨小亮）;

机构地区： 湖南工程学院电气信息学院,湘潭411104

出　　处： 《湖南工程学院学报（自然科学版）》 2017年第3期5-10,共6页

摘　　要： 针对电网电压跌落时矢量控制方法鲁棒性差、冲击电流大等问题,提出一种将矢量控制与多阶滞环控制相结合的新控制方法。电网故障时滞环控制响应快,转子冲击电流限制在1.5pu内,保护了双馈电机转子侧变流器;无故障期间,矢量控制定转子电流谐波含量少,电能质量符合要求。仿真结果表明,低电压穿越控制新方法鲁棒性好、响应快、电流谐波含量少,提高了低电压穿越的能力。 In view of the poor robustness, large impact current of the Vector Control when the grid voltage drops, this paper proposes a new control method that Vector Control is combined with multilevel hystere- sis control method. It can protect the rotor side converter for its quick response and limit the impact cur- rent in the range of 1.5 pu. It has less harmonics of rotor current and the power quality can meet the re- quirements with the Vector Control during the fault-free period. The simulation results show that the novel control method of Low Voltage Ride Through（LVRT） has good robustness, fast response and less current harmonic and it can improve file ability of LVRT.

关 键 词： 低电压穿越 双馈异步电机 矢量 滞环控制