Doubly Fed Induction Generator Model-Based Sensor Fault Detection and Control Loop Reconfiguration

被引:121
作者
Rothenhagen, Kai [1 ]
Fuchs, Friedrich Wilhelm [1 ]
机构
[1] Univ Kiel, Inst Power Elect & Elect Drives, D-24143 Kiel, Germany
关键词
Doubly fed induction machine; fault-tolerant control; observers; sensors; TOLERANT CONTROL; MOTOR DRIVES; DIAGNOSIS; DESIGN; OBSERVERS; SYSTEMS;
D O I
10.1109/TIE.2009.2013683
中图分类号
TP [自动化技术、计算机技术];
学科分类号
080201 [机械制造及其自动化];
摘要
Fault tolerance is gaining interest as a means to increase the reliability and availability of distributed energy systems. In this paper, a voltage-oriented doubly fed induction generator, which is often used in wind turbines, is examined. Furthermore, current, voltage, and position sensor fault detection, isolation, and reconfiguration are presented. Machine operation is not interrupted. A bank of observers provides residuals for fault detection and replacement signals for the reconfiguration. Control is temporarily switched from closed loop into open-loop to decouple the drive from faulty sensor readings. During a short period of open-loop operation, the fault is isolated using parity equations. Replacement signals from observers are used to reconfigure the drive and reenter closed-loop control. There are no large transients in the current. Measurement results and stability analysis show good results.
引用
收藏
页码:4229 / 4238
页数:10
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