摘要
为了研究大型直驱式永磁风力发电机控制及其并网后在电力系统中的运行,建立了风速模型、发电机模型,对直驱式永磁风力发电机的工作原理进行了研究,对风力发电机接入电网运行进行了分析,并对最大功率跟踪和桨距角控制进行了研究。采用理论分析与计算机仿真方法,给出了仿真结果。结果表明,直驱永磁风力发电机在低于额定风速时可以跟踪最大功率,高于额定风速时可以保持额定功率;直驱式永磁风力机对故障电流无贡献,对电网谐波影响很小,几乎不存在闪变问题,对电网频率稳定性无贡献。
To study the control of direct-driven permanent magnet wind turbine generator and its on-grid operation property, the wind speed model and generator model were built, and its operation principle was discussed. The operation property of this kind of wind turbine generator in power system was analyzed. The maximum power tracking technology and pitch angle control method were also presented. The simulation results were given by principle analysis arid computer simulation method. The result shows that the direct-drive permanent magnet wind turbine generator can trace the maximum power below rated wind speed and can hold the rated power above rated wind speed. The direct-drive permanent magnet wind turbine generator has no contribution to fault current and frequency stability of power system, it has not flicker problem and has little harmonic impact on power system.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2008年第4期412-416,共5页
Acta Energiae Solaris Sinica
基金
国家高技术研究发展计划(863)计划项目
教育部重点项目
关键词
直驱永磁风力发电机
控制
并网
仿真
direct-driven permanent magnet wind turbine generator
control
on-grid
simulation
