Fault-Tolerant Capability of Deadbeat-Direct Torque and Flux Control for Three-Phase PMSM Drives
Fault-Tolerant Capability of Deadbeat-Direct Torque and Flux Control for Three-Phase PMSM Drives
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DOI：
10.1109/ecce.2016.7855113
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发表时间：
2016-09
影响因子：
4.4
通讯作者：
G. Scarcella;G. Scelba;M. Pulvirenti;R. Lorenz
中科院分区：
文献类型：
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作者：
G. Scarcella;G. Scelba;M. Pulvirenti;R. Lorenz
研究了三相永磁同步电动机（PMSM）在单一故障下的性能，采用了一种低成本的基于无差拍直接转矩和磁链控制（DB-DTFC）的容错控制方法。在故障操作下，该容错DB-DTFC通过使用在健康条件下采用的相同的转矩线方程、定子磁链和电流观测器来提供电磁转矩和定子磁链的独立调节，需要非常有限的硬件重新配置。特别地，已经证明，在故障情况下，可以简单地通过在转矩和通量控制结构中应用合适的参考系变换集来利用针对健康电驱动器采用的相同驱动器模型方程，而对驱动器性能的有害影响非常有限。实验结果表明，所提出的容错DB-DTFC在保证故障运行和驱动稳定性的同时，不会显著降低参数灵敏度，且计算量增量有限.
This paper investigates the performance of a three-phase permanent magnet synchronous motor (PMSM) drive operating under a single fault, adopting a low cost and fault-tolerant control based on deadbeat-direct torque and flux control (DB-DTFC). Under faulty operation, this fault-tolerant DB-DTFC offers an independent regulation of the electromagnetic torque and the stator flux linkage by using the same torque line equation, stator flux linkage, and current observers adopted during healthy conditions, requiring very limited hardware reconfigurations. In particular, it has been demonstrated that in a fault situation, the same drive model equations adopted for the healthy electric drive can be exploited with very limited detrimental effects on the drive performance simply by applying a suitable reference frame transformation set in the torque and flux control structure. The proposed fault-tolerant DB-DTFC has been validated by experimental tests, confirming that the proposed fault-tolerant DB-DTFC ensures satisfactory faulty operations and drive stability, without significant degradation of parameter sensitivity, keeping limited the increment of computational efforts.