A Geometric Approach to Fault Detection and Isolation in a Grid-Connected Inverter

被引：4
作者：
Mashreghi, Ali [1 ]
Namvar, Mehrzad [1 ]
机构：
[1] Sharif Univ Technol, Dept Elect Engn, Tehran 113658639, Iran
来源：
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY | 2021年 / 29卷 / 06期
关键词：
Fault detection and isolation (FDI); geometric approach; grid-connected inverter; power transistor fault; sensor fault; PWM INVERTER; DIAGNOSIS; VOLTAGE; OBSERVER; DRIVES; SCHEME; COMPENSATION; SINGLE;
D O I：
10.1109/TCST.2020.3034717
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present a nonlinear geometric approach to fault detection and isolation (FDI) in a grid-connected inverter system. Open-switch faults in inverter power transistors together with faults in grid voltages and source current sensors are detected and isolated in the presence of disturbance. The detection process is based on dynamic model of an inverter, including a dc-bus capacitor and an output RL filter. The proposed FDI system does not rely on balanced or zero-sum conditions in the grid point and is functional under nonsinusoidal voltages and currents.
引用
收藏
页码：2622 / 2629
页数：8
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