A Generic Bandwidth Determination Method for 3rd-LESO and Analysis of the Extended 4th-LESO Candidates in Saliency-Based Sensorless Control
A Generic Bandwidth Determination Method for 3rd-LESO and Analysis of the Extended 4th-LESO Candidates in Saliency-Based Sensorless Control
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DOI：
10.1109/tec.2023.3341963
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发表时间：
2024-06
影响因子：
4.9
通讯作者：
Yan Li;Zhen Chen;Xiaoyong Sun;Zi-Qiang Zhu;Xiangdong Liu
中科院分区：
文献类型：
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作者：
Yan Li;Zhen Chen;Xiaoyong Sun;Zi-Qiang Zhu;Xiangdong Liu
线性扩张状态观测器（LESO）已被广泛应用于基于凸极的内置式永磁同步电机（IPMSM）位置和速度跟踪无传感器控制。LESO的性能主要取决于其带宽。本文重点研究了基于凸极无传感器控制中三阶LESO的带宽确定问题。提出了一种利用开环传递函数确定第三代LESO带宽的通用方法，进一步揭示了第三代LESO的位置和速度跟踪性能。所需的带宽可以通过调节固有频率粗略地实现，随后通过两个阻尼因子精确地调谐，用于无传感器控制的特定应用。随后，带宽确定的一般准则的建议和总结。此外，一个直观的和改进的四阶（4th）-LESO，这是从传统的3rd-LESO的扩展，并全面分析其在无传感器控制中的应用。与传统的3rd-LESO相比，所提出的4th-LESO具有更好的高频噪声抑制能力，因此它是基于凸极的无传感器控制的一个有前途的候选人。最后，所有的理论分析进行了实验验证1千瓦的IPMSM驱动器。
The linear extended state observers (LESOs) have been widely employed in the saliency-based sensorless control of interior permanent magnet synchronous motor (IPMSM) drives for position and speed tracking. The performances of the LESO are mainly determined by its bandwidth. This paper focuses on the bandwidth determination of the third-order (3rd)-LESOs used in saliency-based sensorless control. A generic method for determining the bandwidth of the 3rd-LESO is proposed by means of the open-loop transfer function, by which both the position and speed tracking performances can be further revealed. The desired bandwidth can be roughly achieved by adjusting the natural frequency and subsequently precisely tuned via two damping factors for the specific application of sensorless control. Subsequently, general guidelines of the bandwidth determination are proposed and summarized. Moreover, an intuitive and improved fourth-order (4th)-LESO, which is extended from the conventional 3rd-LESO, is proposed and comprehensively analyzed for its application in the sensorless control. Compared with the conventional 3rd-LESO, the proposed 4th-LESO exhibits improved capability of the high frequency noise rejection and thus it is a promising candidate for the saliency-based sensorless control. Finally, all the theoretical analyses are verified experimentally on a 1-kW IPMSM drive.