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Improved Sensorless Vector Control of Induction motor Using Sliding Mode Observer

机译:滑模观测器改进的感应电动机无传感器矢量控制

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This work deals with a sensorless speed control for three-phase induction motor in order to improve its operation at low speed. Initially, a direct field oriented control employing space vector pulse with modulation based on sliding mode observer (SMO) is studied and evaluated due to its high accuracy in estimating the flux at low speed. The proposed current model based on SMO provides good speed estimation under low speed and parameter or load changes. Simulations and experimental tests with diferent operational conditions at low speed are carried out in order to test the sensorless control. The results show a good perfomance and agreed with the results shown in recent papers.
机译:这项工作涉及三相感应电动机的无传感器速度控制,以改善其低速运行。最初,由于其在低速下估算磁通量的高精度,因此研究并评估了采用基于滑模观测器(SMO)的带有调制的空间矢量脉冲的直接磁场定向控制。所提出的基于SMO的当前模型可在低速和参数或负载变化下提供良好的速度估计。为了测试无传感器控制,在不同的低速运行条件下进行了仿真和实验测试。结果显示出良好的性能,并且与最近论文中显示的结果一致。

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