Control of five-phase induction motor under open-circuit phase fault fed by fault tolerant VSI

Mahmoud I. Masoud, Sherif M. Dabour, Abd El-Wahab Hassan, Essam M. Rashad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)


Five-phase induction motor drive systems have gained much popularity due to the numerous advantages that they offer when compared to their three-phase counterparts. In principle, the supply to five-phase drive system is given from five-phase voltage source inverter (VSI). In this paper, a fault-tolerant control strategy for five-phase VSIs has been suggested. The conventional five-phase inverter consists of only five legs. The proposed strategy forces the faulty phase to connect to the midpoint of the DC-link via the additional dc-bus midpoint inserting Thyristors. The proposed inverter provides tolerance to both short-circuit and open-circuit faults of the switching devices. The performances of the post-fault as well as the normal pre-fault operation are discussed. The fault tolerance of the inverter is verified using vector control of a five-phase induction motor. The complete control scheme is implemented in real-time using digital signal processor (DS1104) for a prototype 1.5 hp motor. Experimental results of the proposed drive verify the proposed control scheme.
Original languageEnglish
Title of host publication2015 IEEE 10th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)
Number of pages6
ISBN (Electronic)9781479977437
ISBN (Print)9781479977420
Publication statusPublished - 26 Oct 2015


  • Induction motors
  • Inverters
  • Fault tolerant systems
  • Fault tolerance
  • Mathematical model
  • Torque
  • Stators
  • Space vector pulse width modulation
  • Machine vector control

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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