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首页> 外文期刊>Mechanical systems and signal processing >Robust plug-in repetitive control for speed smoothness of cascaded-PI PMSM drive
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Robust plug-in repetitive control for speed smoothness of cascaded-PI PMSM drive

机译：级联-PI PISM驱动器速度平滑度强大的插电器重复控制

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摘要

Non-ideal factors can cause steady-state speed ripples for Permanent Magnet Synchronous Motor (PMSM). In this paper current measurement error is mainly analyzed since it can cause multiple (not only 1st- or 2nd-order as analyzed in the existing literature) harmonics when considering its influence on electrical angle. In order to suppress the ripples, a robust plug-in repetitive controller with phase compensation is designed in the outer speed loop of PMSM cascade PI control system. Compared with the repetitive controller added in the current loop, there are two technical challenges: more stringent requirement of high-frequency disturbance suppression and more complex phase compensation design. Hence, a third-order Butterworth filter with phase correction is proposed which can ensure the system's ability to resist low-frequency periodic disturbances and the high-frequency stability of the system. A hybrid phase correction method combining lead, lag and linear correction is designed which can ensure the stability and the fast convergence of the system at low frequencies. The designed repetitive controller is robust to PMSM parameters variation within a normal range. The experimental results prove that the proposed control strategy can effectively suppress motor speed fluctuation with good steady-state and transient performance.
机译：非理想因素可导致永磁同步电机（PMSM）的稳态速度涟漪。在本文中，主要分析了当前测量误差，因为在考虑其对电视角度的影响时，它可能导致谐波的多个（不仅在现有文献中的第2次）谐波。为了抑制波纹，设计了一种具有相位补偿的强大插入式重复控制器，设计在PMSM级联PI控制系统的外速环中。与电流回路中添加的重复控制器相比，有两个技术挑战：高频扰动抑制和更复杂的相位补偿设计的更严格要求。因此，提出了一种具有相位校正的三阶Butterworth滤波器，其可以确保系统抵抗低频周期性干扰和系统的高频稳定性的能力。设计了一种混合相位校正方法，其设计了铅，滞后和线性校正，其可以确保在低频下系统的稳定性和快速收敛。设计的重复控制器对正常范围内的PMSM参数变化具有稳健。实验结果证明，提出的控制策略可以有效地抑制电动机速度波动，稳态和瞬态性能。

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