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A geometric approach to fault detection and isolation in a grid-connected inverter
, Article IEEE Transactions on Control Systems Technology ; Volume 29, Issue 6 , 2021 , Pages 2622-2629 ; 10636536 (ISSN) ; Namvar, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2021
Abstract
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. © 1993-2012 IEEE
A geometric approach to fault detection and isolation in a grid-connected inverter
, Article IEEE Transactions on Control Systems Technology ; November , 2020 , Pages: 1-8 ; Namvar, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2020
Abstract
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. IEEE