摘要
基于同步旋转坐标系建立了永磁双馈发电机(permanent magnetic doubly fed induction generator,PMDFIG)的数学模型,分析了PMDFIG在稳态和电压跌落情况下并网运行的控制策略,建立了该电机的稳态与动态的仿真模型。稳态仿真结果表明,与传统双馈发电机相比,PMDFIG能降低励磁变频器容量,降低电网扰动过渡过程中发电机定转子过电流。动态仿真结果验证了所提控制策略在电网电压小幅跌落时的有效性。
Based on rotating coordinate system a mathematical model of permanent magnetic doubly fed induction generator（PMDFIG） is established;the control strategies for grid-connection of PMDFIG under the conditions of steady state operation and power grid voltage dip are analyzed,and steady state and dynamic models of PMDFIG are built.Results of steady state simulation show that different from traditional doubly fed induction generators,the capacity of excitation frequency converter can be decreased,and the over current in rotor and stator during disturbance of power grid can be suppressed while PMDFIG is adopted.The effectiveness of the proposed control strategy under small voltage dip of power grid is verified by dynamic simulation results.
出处
《电网技术》
EI
CSCD
北大核心
2013年第8期2278-2283,共6页
Power System Technology
基金
国家自然科学基金项目(51177089)~~
关键词
风力发电
永磁双馈发电机
并网
电压定向矢量控制
电压跌落
wind power generation
permanent magnetic doubly fed induction generator（PMDFIG）
grid-connection
voltage vector oriented control
grid voltage dip
