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Fast detection of open-switch fault in cascaded H-bridge multilevel converter

Shahbazi, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.24200/sci.2017.4371
  3. Publisher: Sharif University of Technology , 2018
  4. Abstract:
  5. Cascaded H-bridge converter has been utilized recently in different high-power applications due to its modular and simple structure. In order to have a balanced operation after a fault occurrence in this converter, it is necessary to detect the switch fault and its location. In this paper, a fast power-switch fault detection method is presented to identify a fault and its location. Only one voltage measurement per phase is required by this method, and the fault detection is faster compared to the existing methods. Moreover, it is suitable for implementation on an FPGA device due to the use of simple math, relational, and state machine blocks. The proposed method is verified by computer simulations and FPGA-based experimental tests. © 2018 Sharif University of Technology. All rights reserved
  6. Keywords:
  7. Cascaded H-bridge converter Insulated Gate Bipolar Transistor (IGBT) ; Open-switch fault ; Power-switch fault detection ; Bridge circuits ; Field programmable gate arrays (FPGA) ; Insulated gate bipolar transistors (IGBT) ; Power converters ; Balanced operation ; Cascaded H-bridge converter ; Cascaded H-bridge multilevel converters ; High power applications ; Multilevel converter ; Power switches ; Simple structures ; Switch faults ; Fault detection ; Computer simulation ; Detection method ; Electronic equipment ; Experimental study ; Measurement method
  8. Source: Scientia Iranica ; Volume 25, Issue 3D , 2018 , Pages 1561-1570 ; 10263098 (ISSN)
  9. URL: http://scientiairanica.sharif.edu/article_4371.html