Fast Detection of Open-Switch Fault in Cascaded H-Bridge Multilevel Converter

Document Type : Article

Authors

Center of Excellence in Power System Management & Control (CEPSMC), Sharif University of Technology, Azadi Av., Tehran 11155-8639, Iran

Abstract

Cascaded H-Bridge converter has recently been utilized 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 the 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

Keywords

Main Subjects


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Volume 25, Issue 3
Transactions on Computer Science & Engineering and Electrical Engineering (D)
May and June 2018
Pages 1561-1570
  • Receive Date: 13 January 2016
  • Revise Date: 20 August 2016
  • Accept Date: 24 December 2016