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A geometric approach to fault detection and isolation in a grid-connected inverter

Mashreghi, A ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/TCST.2020.3034717
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. 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
  6. Keywords:
  7. Fault detection and isolation (FDI) ; Generators ; Geometric approach ; Grid-connected inverter ; Inverters ; Load modeling ; Power transistor fault ; Sensor fault ; Sensor systems ; Voltage measurement ; Electric inverters ; Bus capacitors ; Detection process ; Grid connected inverters ; Non-sinusoidal voltage ; Source currents ; Switch faults ; Fault detection
  8. Source: IEEE Transactions on Control Systems Technology ; November , 2020 , Pages: 1-8
  9. URL: https://ieeexplore.ieee.org/document/9253616