A fast and simple method to detect short circuit fault in cascaded H-bridge multilevel inverter

Author

Ouni, Saeed ; Rodriguez, Jose ; Shahbazi, Mahmoud ; Zolghadri, MohammadReza ; Oraee, Hashem ; Lezana, Pablo ; Ulloa Schmeisser, Andres

Author_Institution

Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran

fYear

2015

fDate

17-19 March 2015

Firstpage

866

Lastpage

871

Abstract

Fault detection is one of the most important tasks in fault tolerant converters. In this paper, a new method is proposed to detect the faulty cell in a cascaded H-bridge multilevel inverter. The detection technique is based on comparison of the output voltage with reference voltage made by using switching control pulses and DC-Link voltage. Because of the simplicity of this method, it is possible to use a single field-programmable gate array (FPGA) to implement this method and inverter control. The simulation and experimental results confirm the effectiveness of the proposed fault detection technique.

Keywords

cascade networks; fault diagnosis; fault tolerance; field programmable gate arrays; invertors; DC-link voltage; FPGA; cascaded H-bridge multilevel inverter; fault detection technique; fault tolerant converter; field programmable gate array; inverter control; reference voltage; short circuit fault; switching control pulse; Circuit faults; Fault detection; Image edge detection; Inverters; Switches; Voltage control; Voltage measurement; Cascaded H-Bridge Inverter; Fault Detection; field-programmable gate array (FPGA);

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology (ICIT), 2015 IEEE International Conference on

Conference_Location

Seville

Type

conf

DOI

10.1109/ICIT.2015.7125206

Filename

7125206