Active disturbance-rejection control (ADRC) as a current control (CC) method for ac drive systems has been recently shown to have significant strengths. Its robustness to system uncertainties and its high disturbance-rejection capability render it an attractive control scheme for various mobile applications. Until now, however, all the known tuning methods available in literature are based on a number of assumptions that may lead to the degraded drive performance and even to the loss of stability. This article, thus, provides a rigorous analysis and proposes a new CC design method based on the ADRC technique. The design derives a generic closed-loop transfer function considering system delays and the dynamics of the extended state observer. Based on this analysis, a tuning method able to guarantee a set performance to avoid unstable operation is thus proposed. The effects of model uncertainties on the current loop system stability and robustness are also analyzed and reported. A tuning criterion to enhance system robustness and to improve its dynamic performance is developed and validated experimentally on a case study system.

中文翻译：

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交通系统永磁电机有源抗扰电流控制器的稳定鲁棒设计

主动抗扰控制 (ADRC) 作为交流驱动系统的电流控制 (CC) 方法最近已被证明具有显着优势。它对系统不确定性的鲁棒性和高抗扰能力使其成为各种移动应用的有吸引力的控制方案。然而，到目前为止，文献中可用的所有已知调整方法都基于许多假设，这些假设可能导致驱动器性能下降，甚至失去稳定性。因此，本文进行了严格的分析，并提出了一种基于 ADRC 技术的新 CC 设计方法。考虑到系统延迟和扩展状态观察器的动态特性，该设计推导出通用闭环传递函数。基于这一分析，因此提出了一种能够保证设定性能以避免不稳定操作的调谐方法。还分析和报告了模型不确定性对电流回路系统稳定性和鲁棒性的影响。在案例研究系统上开发并通过实验验证了用于增强系统鲁棒性和改善其动态性能的调整标准。