基于新颖结构的直驱式风力发电低电压穿越技术  

Research on the LVRT of Direct Drive Wind Power Generation Based on a New Structure

作　　者：孙梅[1] 杨杰[1] 徐世周[1] 

机构地区：[1]中国矿业大学,信电学院,江苏徐州221008

出　　处：《电力电子技术》2012年第11期7-9,共3页Power Electronics

摘　　要：阐述了Vienna整流器的工作原理和控制策略,说明了应用Vienna整流器后的三电平直驱式风力发电变流器相对于传统拓扑结构的优越性;分析了直驱式风力发电系统低电压穿越(LVRT)用直流泄放电路的硬件电路,并给出了一种新型的控制策略;使用Matlab/Simulink软件搭建了基于Vienna整流器的直驱式风力发电LVRT系统仿真模型,并通过实验验证了系统结构和控制策略的可行性。The working principle and control strategy of Vienna rectifier are illustrated, the advantages of three-level direct drive wind power converter comparing with traditional topologies after using the Vienna rectifier are described. The hardware circuit of DC discharge circuit used in direct drive wind power generation for low voltage ride through （LVRT） is analyzed and a new strategy is proved.Finally, using the Matlab/Simulink software, the simulation model of direct drive wind power generation LVRT system based on Vienna rectifier is built, and the simulation and experimental results prove that the system structure and control strategy are good and feasible.

关 键 词：整流器 风力发电 低电压穿越 泄放电路 

分 类 号：TM461[电气工程—电器]