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Implementation and experimental investigation of a sensorless field-oriented control scheme for permanent-magnet synchronous generators

机译:永磁同步发电机无传感器面向无传感器现场控制方案的实施与实验研究

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摘要

Variable-speed wind energy conversion systems based on permanent-magnet synchronous generators (PMSGs) are typically controlled using the field-oriented control (FOC) principles. Therefore, accurate information of the rotor speed and position are essential to perform the required reference frame transformations. These signals can be obtained by mechanical sensors (e.g., position encoders or speed transducers) or via estimation schemes. This paper proposes a sensorless FOC strategy for direct-driven PMSGs in variable-speed wind turbines. A synchronously rotating reference frame phase-locked loop (PLL) that utilizes a model-based back elector-motive force (back-EMF) estimation is employed to estimate the rotor speed and position of the PMSG. The proposed sensorless FOC strategy is experimentally implemented, and its performance is investigated for all operation conditions and under parameter variations of the PMSG.
机译:基于永磁同步发电机(PMSG)的可变速度风能转换系统通常使用面向磁场的控制(FOC)原理来控制。 因此,转子速度和位置的准确信息对于执行所需的参考帧变换是必不可少的。 这些信号可以通过机械传感器(例如,位置编码器或速度传感器)或通过估计方案获得。 本文提出了一种可变速度风力涡轮机中直接驱动的PMSG的无传感器FOC策略。 使用基于模型的后选光线(后EMF)估计的同步旋转参考帧锁相环(PLL)来估计PMSG的转子速度和位置。 实验实施了所提出的无传感器FOC策略,并针对所有操作条件和PMSG的参数变化来研究其性能。

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