直驱式风力发电系统并网变流器研究  

Study on the Grid-connected Converter in Direct-drive Wind Power Generation System

作　　者：王志业[1] 张传金[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电测与仪表》2011年第11期45-48,共4页Electrical Measurement & Instrumentation

基　　金：中国矿业大学中央高校基本科研业务费专项资金资助项目(2010ZDP01A10)

摘　　要：在三电平永磁直驱风力发电系统并网变流器数学模型的基础上,采用一种固定开关频率的直接功率控制方法,并使用虚拟电网磁链获取电网电压角度,省略了电网电压传感器。仿真结果表明:该控制方法实现了有功功率、无功功率的动态解耦,可实现单位功率因数运行,具有良好的动静态性能。The mathematical model of the grid ,connected converter in three-level Direct-Drive Wind Power Generation System is presented, and a direct power control with fixed switching frequency is adapted, besides, the grid voltage angle is calculated by virtual grid flux, reahage sensors of grid side are eliminated. Simulation results show that the decoupling control between active and reactive power during the dynamic eourse has been realized, the unity power factor can be achieved, dynamic＇r and steady performance are both well.

关 键 词：三电平 风力发电 变流器 直接功率控制 虚拟磁链 固定开关频率 

分 类 号：TM614[电气工程—电力系统及自动化]