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首页> 外文期刊>IEEE Transactions on Power Electronics >Deadbeat Direct Torque and Flux Control for Permanent Magnet Synchronous Motor Based on Stator Flux Oriented
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Deadbeat Direct Torque and Flux Control for Permanent Magnet Synchronous Motor Based on Stator Flux Oriented

机译：基于定子磁链定向的永磁同步电动机无差拍直接转矩和磁通控制

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摘要

Direct torque control (DTC) has become a widely acceptable alternative to field-oriented control in permanent magnet synchronous motor (PMSM) drives. Deadbeat direct torque and flux control (DB-DTFC) is a significant improvement over the classical DTC. However, there are some aspects that can be improved, such as insufficiently small electromagnetic torque ripple, unsmooth dynamic response, heavy computation burden, and relatively weak robustness to motor parameters variation. To improve the operation performance, an advanced DB-DTFC strategy is proposed in this article. First, the algorithm model based on stator flux oriented coordinate system is deduced. On this basis, the basic principle of proposed DB-DTFC is presented. Second, a novel graphical analysis method is proposed to help illustrate the proposed strategy. Third, a general solution method is proposed to solve the reference stator voltage, which is a key variable for the DB-DTFC. Finally, the stability of system is analyzed. Theoretical and experimental comparisons between the proposed DB-DTFC and the conventional DB-DTFC are done. The results show that the performance in the aspects of electromagnetic torque and stator current ripples reduction, dynamic response, computation burden, and robustness to motor parameters variation are all improved in the proposed DB-DTFC.
机译：在永磁同步电动机（PMSM）驱动器中，直接转矩控制（DTC）已成为磁场定向控制的一种广泛接受的替代方法。无差拍直接转矩和磁通控制（DB-DTFC）是对传统DTC的重大改进。但是，有些方面可以改进，例如电磁转矩波动不够小，动态响应不平稳，计算负担大以及对电动机参数变化的鲁棒性较弱。为了提高操作性能，本文提出了一种高级的DB-DTFC策略。首先，推导了基于定子磁链定向坐标系的算法模型。在此基础上，提出了所提出的DB-DTFC的基本原理。其次，提出了一种新颖的图形分析方法来帮助说明所提出的策略。第三，提出了一种通用的求解方法来求解参考定子电压，这是DB-DTFC的关键变量。最后，分析了系统的稳定性。在建议的DB-DTFC和常规DB-DTFC之间进行了理论和实验比较。结果表明，所提出的DB-DTFC在电磁转矩和定子电流纹波减小，动态响应，计算负担以及对电动机参数变化的鲁棒性方面均具有改善的性能。

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