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首页> 外文会议>Annual Conference of the IEEE Industrial Electronics Society >Sensorless stator flux observer for direct torque controlled interior permanent magnet synchronous motor drives using the current derivative approach
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Sensorless stator flux observer for direct torque controlled interior permanent magnet synchronous motor drives using the current derivative approach

机译：采用电流导数方法的无传感器定子磁通观测器，用于直接转矩控制的内部永磁同步电动机驱动器

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摘要

This paper proposes a sensorless stator flux observer for the direct torque control (DTC) scheme of interior permanent magnet synchronous motors (IPMSMs) drives in the very low speed region including standstill. The stator flux observer comprises the voltage model augmented by the current model. The position information required by the current model is obtained by a separate rotor position estimator that utilizes the current derivative of the machine. Due to inherent machine saliency, the stator current excites different responses during the application of the active and zero voltage vectors which in turn, can be analysed to retrieve the rotor position information. Unlike the signal injection method, the proposed method utilizes only the applied voltage vectors to the machine stator windings. The simulation results presented verify the effectiveness of the proposed approach.
机译：本文提出了一种无传感器定子磁通观测器，用于在极低速区域（包括静止状态）的内部永磁同步电动机（IPMSM）驱动器的直接转矩控制（DTC）方案。定子磁通观测器包括由电流模型扩展的电压模型。当前模型所需的位置信息是通过单独的转子位置估算器获得的，该估算器利用了电机的电流导数。由于固有的机器显着性，在施加有功和零电压矢量期间，定子电流会激发不同的响应，进而可以对其进行分析以获取转子位置信息。与信号注入方法不同，所提出的方法仅利用施加到电机定子绕组的电压矢量。仿真结果表明了该方法的有效性。

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