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.
出处
《华东电力》
北大核心
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)
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
grid voltages dip
permanent-magnet synchronous motor
wind power system
low-voltage penetration
