电网电压跌落对永磁同步电机风电系统的影响  

Influence of Grid Voltages Dip on Permanent Magnet Synchronous Motor of Wind Power System

作　　者：张磊[1] 梅柏杉[1] 

机构地区：[1]上海电力学院电力与自动化工程学院,上海200090

出　　处：《华东电力》2010年第1期84-87,共4页East China Electric Power

基　　金：上海市教育委员会重点学科建设资助项目(J51301);上海市教委自然科学基金项目(07ZZ146)

摘　　要：为了研究电网电压跌落对永磁同步电机风电系统的影响,进行了实验室实验并构建永磁直驱风电系统的仿真模型,分别对永磁同步发电机和变流器进行控制,分析当电网电压跌落30%(2 s)、跌落50%(0.5s)以及跌落85%(0.2 s)三种情况时电机和变流器的运行情况。实验结果和MATLAB R2007a/SimuLink仿真结果表明,永磁同步发电机转速跟踪很好;发电机侧输出电流近似正弦;在电网电压跌落的同时还能对电网提供一定的无功支持,直驱式永磁同步电机风电系统具有较强的低电压穿越能力。In order to study the influence of grid voltages dip on permanent magnet synchronous motor of wind power system, laboratory experiments and simulation system of direct-driven permanent wind power system were carried out, which were to control the permanent-magnet synchronous generator, commentator motor and analysis three operation conditions when grid voltages dip by 30% （2 seconds）, 50% （0.5 seconds） and 85% （0.2 seconds）. The result of experiment and simulinke by MATLAB R200Ta/SimuLink indicated that permanent-magnet synchronous generator speed tracked well; current output from the generator-side approximated sinusoidal. When the grid voltages dip, it could provide some of reactive power supporting. The direct-driven permanent-magnet synchronous generator of wind power system had a strong low-voltage penetration capability.

关 键 词：电网电压跌落 永磁同步发电机 风电系统 低电压穿越 

分 类 号：TM313[电气工程—电机]