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Rotor flux-based MRAS for three level inverter fed induction motor drive using fuzzy logic controller

机译:基于转子磁链的MRAS的模糊逻辑控制器用于三电平逆变器感应电动机驱动

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摘要

This paper proposes a sensorless vector control scheme lor induction motor to operate at low speed. Low speed operation of rotor flux model reference adaptive system (MRAS) have the problems of dc drift and dead time due to pure integrator present in the reference model. A control scheme is proposed with non-linear integrator in the reference model of the rotor flux-based MRAS speed observer to obtain the compensating voltage. Adaptive model tuning is done with fuzzy logic controller (FLC) in place of PI controller. Multilevel inverter with space vector pulse width modulation (SVPWM) technique is used to improve the performance of drive. A S1MULINK model is developed to compare performance of conventional rotor flux MRAS and proposed control scheme with PI controller and FLC.
机译:本文提出了一种无传感器矢量控制方案或异步电动机在低速运行。转子磁通模型参考自适应系统(MRAS)的低速运行由于参考模型中存在纯积分器而存在直流漂移和停滞时间的问题。在基于转子磁通的MRAS速度观测器的参考模型中,提出了一种利用非线性积分器的控制方案,以获得补偿电压。自适应模型调整是通过模糊逻辑控制器(FLC)代替PI控制器完成的。具有空间矢量脉冲宽度调制(SVPWM)技术的多电平逆变器用于提高驱动器性能。开发了一个S1MULINK模型,以比较常规转子磁通MRAS的性能以及所提出的带有PI控制器和FLC的控制方案。

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