Discrete-Time Control of High-Speed Salient Machines

被引:55
|
作者
Altomare, Antonio [1 ]
Guagnano, Alessandra [1 ]
Cupertino, Francesco [1 ]
Naso, David [1 ]
机构
[1] Politecn Bari, Elect & Informat Engn Dept, I-70125 Bari, Italy
关键词
AC motor drives; current control; digital delays; discrete-time systems; high-frequency control; high-speed electrical drives; synchronous reluctance machines; CURRENT REGULATOR; AC MACHINES; DESIGN;
D O I
10.1109/TIA.2015.2478750
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In modern electrical drives, all regulators are implemented in discrete-time domain. The design of the current controller in the continuous time and its following discretization is a common and effective procedure as long as the ratio between the fundamental frequency and the sampling frequency remains sufficiently small. If this condition is violated, the performance of the closed-loop system becomes increasingly poor or even unstable. Literature has proposed some effective strategies to design the controllers directly in the discrete-time domain, but these methods can be applied only to nonsalient machines. However, saliency is another major cause of loss of performance when not properly considered. This paper focuses on the extension of the discrete-time design rules to salient machines. Simulation and experimental results demonstrate the effectiveness of the proposed approach.
引用
收藏
页码:293 / 301
页数:9
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