摘要
建立了单机与无穷大系统相连的双馈感应发电机(DFIG)数学模型,并以定子电压综合矢量恒定为控制约束,提出了一种双馈感应发电机的励磁控制策略。该控制策略仅需测量定子侧电压、电流信号,简化了控制系统。利用该策略对并网双馈感应发电机有功、无功稳态调节特性及机端三相对地突然短路的过渡过程进行了仿真研究。结果表明,该方法能够实现有功和无功的独立控制,且具有良好的动态性能。
A mathematical model of DFIG（Doubly Fed induction Generator） in a single-machine infinite-bus system is established and its excitation control strategy with restraint of keeping stator voltage comprehensive phasor constant is presented. Using this strategy,only the currents and voltages at stator side are required to simplify the control system. The steady state regulation characteristics of active power and reactive power and the transient processes of a sudden 3-phase-to-ground short-circuit are simulated with this control strategy. It is shown that active power and reactive power are controlled separately with good dynamic performance. This project is supported by Program for New Century Excellent Talents in University.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第4期31-35,共5页
Electric Power Automation Equipment
基金
教育部"新世纪优秀人才支持计划"资助
关键词
双馈感应发电机
直接功率控制
变速恒频
空间电压矢量
数值仿真
doubly fed induction generator
direct power control
variable speed constant frequency
space voltage vector
numerical simulation
