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首页> 外文期刊>Renewable Power Generation, IET >Magnetic equivalent circuit modelling of doubly-fed induction generator with assessment of rotor inter-turn short-circuit fault indices
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Magnetic equivalent circuit modelling of doubly-fed induction generator with assessment of rotor inter-turn short-circuit fault indices

机译：感应器匝间短路故障指标评估的双馈感应发电机等效电路建模

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In this study, a wound rotor induction machine, as the core of a doubly-fed induction generator (DFIG) system, is modelled using the magnetic equivalent circuit approach. The entire DFIG system is implemented in Matlab/Simulink environment, including the machine model, power converters, control system and the grid. The model, which includes the ability to simulate rotor inter-turn short-circuits (RITSCs), is subsequently used for the investigation and comparison of the impact of this fault in several DFIG quantities, namely in the stator current and in some control variables. This research also deals in detail with the differences found when comparing RITSC and unbalanced rotor resistance (URR) faults. It is observed that on the contrary to the URR, the stator current spectrum is more appropriate than the control signals for the detection of RITSC. Simulation and experimental results obtained with a DFIG system operating at sub-synchronous and super-synchronous speeds, for different values of the active and reactive powers injected into the grid, corroborate the findings reported in this study.
机译：在这项研究中，绕线式转子感应电机作为双馈感应发电机（DFIG）系统的核心，使用磁等效电路方法进行建模。整个DFIG系统在Matlab / Simulink环境中实现，包括机器模型，电源转换器，控制系统和电网。该模型具有仿真转子匝间短路（RITSC）的能力，随后被用于调查和比较该故障在多个DFIG量（即定子电流和某些控制变量）中的影响。这项研究还详细处理了比较RITSC和不平衡转子电阻（URR）故障时发现的差异。可以看出，与URR相反，定子电流谱比控制信号更适合于RITSC的检测。对于以不同同步和超同步速度运行的DFIG系统，对于注入到电网中的有功功率和无功功率的不同值，获得的仿真和实验结果证实了本研究报告的结果。

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