An Adaptive Sliding Stator Flux Observer for a Direct-Torque-Controlled IPM Synchronous Motor Drive
An Adaptive Sliding Stator Flux Observer for a Direct-Torque-Controlled IPM Synchronous Motor Drive
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DOI：
10.1109/tie.2007.900328
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发表时间：
2007-07
影响因子：
7.7
通讯作者：
Zhuang Xu;M. F. Rahman
中科院分区：
文献类型：
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作者：
Zhuang Xu;M. F. Rahman
针对直接转矩控制内置式永磁同步电动机，研究了定子磁链估计方法的性能改进。本文提出了一种基于电机电流模型的自适应滑模观测器来估计定子磁链。实验结果表明，所提出的观测器已经能够提供更准确的估计比开环估计器在稳态和瞬态。该观测器具有良好的动态特性、抗干扰能力和高精度估计能力。通过集成磁链观测器，驱动系统可以在半满负载下以低至10 r/min（0.33 Hz）的极低速度运行。
This paper focuses on performance improvements of the stator flux estimation for a direct-torque-controlled interior permanent magnet synchronous motor drive. In this paper, an adaptive sliding observer is presented to estimate the stator flux linkage based on the motor current model. The experimental results show that the proposed observer has been able to deliver more accurate estimation than an open-loop estimator both in the steady state and during transients. The observer has better dynamic behavior, disturbance resistance, and high-accuracy estimation ability. With the integrated flux observer, the drive system can operate at very low speed down to 10 r/min (0.33 Hz) with half full load.