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MRAS-based speed estimation of grid-connected doubly fed induction machine drive

机译:并网双馈感应电机驱动器基于MRAS的速度估计

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摘要

This study presents a new model reference adaptive system (MRAS)-based speed estimation strategy for a grid-connected doubly fed induction machine (DFIM) drive. The reference and the adaptive models of the proposed MRAS utilise instantaneous and steady-state values, respectively, of a fictitious quantity obtained as the difference between two fictitious ratios of rotor voltage to current along the d and q axes. The dimension of this fictitious quantity is ohm (Ω) and has no physical significance. The proposed formulation is free from flux estimation and independent of stator and rotor resistance variations. This new formulation shows stable performance in the regenerating mode of operation of DFIM. All the relevant studies, in this context, are done in MATLAB/Simulink. The simulation study is further validated with a dSPACE-1104-based DFIM laboratory prototype.
机译:这项研究提出了一种新的基于模型参考自适应系统(MRAS)的并网双馈感应电机(DFIM)驱动器的速度估计策略。所提出的MRAS的参考模型和自适应模型分别利用虚拟量的瞬时值和稳态值作为转子电压与电流沿d和q轴的两个虚拟比率之间的差值而获得。该虚拟量的尺寸为欧姆(Ω),没有物理意义。所提出的公式没有磁通估计,并且与定子和转子的电阻变化无关。这种新配方在DFIM的再生运行模式下显示出稳定的性能。在这种情况下,所有相关研究都是在MATLAB / Simulink中完成的。基于dSPACE-1104的DFIM实验室原型进一步验证了仿真研究。

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