控制理论(社会学)
反推
观察员(物理)
反电动势
传递函数
计算机科学
非线性系统
工程类
物理
电流(流体)
自适应控制
控制(管理)
量子力学
电气工程
人工智能
作者
Yanzhen Shao,Yanjun Yu,Feng Chai,Tanci Chen
出处
期刊:IEEE Transactions on Industrial Electronics
[Institute of Electrical and Electronics Engineers]
日期:2021-11-11
卷期号:69 (11): 10846-10858
被引量:11
标识
DOI:10.1109/tie.2021.3125667
摘要
The back-electromotive force (BEMF) model-based observer is an attractive sensorless control strategy for permanent magnet synchronous motor (PMSM) drives. However, the accuracy of BEMF observer is deteriorated due to the dc offsets caused by current measurement and inverter nonlinearity. To address this problem, the article proposed a two-degree-of-freedom structure-based backstepping observer (TSBO) for sensorless PMSM drives. First, a two-degree-of-freedom structure is presented to improve the frequency-domain response of the BEMF observer. Second, a second-order complex vector transfer function is inversely introduced into the studied structure to achieve bandpass characteristics. Compared with the conventional BEMF observer, the studied TSBO can achieve dc error suppression without introducing the extra bandpass filter. The studied algorithm is verified by the experimental results on a 4.4 kW PMSM platform.
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