摘要
建立了体现为标准形式状态空间方程的定子匝间故障下DFIG(Doubly Fed Induction Generator)的数学模型。在Matlab环境下建立了其仿真模型——S-函数模块,将之嵌入Matlab内置的DFIG机组(由风机、变流器、相关机械与电气控制以及DFIG组成)仿真例程,构建了定子匝间故障下的DFIG机组仿真模型,这一工作是对Matlab的有益拓展。进而,对DFIG机组在正常与故障情况下的运行稳定性做了仿真分析,结果表明:在低风速与高风速临界情况下,定子匝间故障将导致DFIG机组转速小幅振荡而恶化其运行稳定性。
The mathematical model of doubly fed induction generator （DFIG） with stator inter-turn fault, which presents itself as standard form state space equation, is deduced and established, for the first time. The corresponding simulation model, i.e. Matlab S-function block is developed and embedded in a Matlab built-in routine simulating DFIG unit comprising wind turbine, converter, related mechanical/electrical control and DFIG. The simulation model of DFIG unit with stator inter-turn fault is established, which is a beneficial extension of Matlab simulation. The stability of DFIG unit under the healthy and faulty conditions is analyzed by using simulation. The results show that stator inter-turn fault leads to small vibration and deteriorates the stability of DFIG unit under the critical conditions of low and high wind speed.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2018年第1期205-215,共11页
Journal of System Simulation
基金
国家自然科学基金(51277077)
关键词
双馈感应发电机
定子匝间故障
模型
仿真
稳定性
DFIG （doubly fed induction generator）
stator inter-turn fault
model
simulation
stability
