Open AccessFault tolerance performance of dual‐inverter‐based six‐phase drive system under single‐, two‐, and three‐phase open‐circuit fault operation
Author(s) -
Melo Victor Felipe Moura Bezerra,
Jacobina Cursino Brandão,
Rocha Nady
Publication year - 2018
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2016.0724
Subject(s) - inverter , fault tolerance , compensation (psychology) , fault (geology) , control theory (sociology) , dual (grammatical number) , computer science , stuck at fault , phase (matter) , engineering , control engineering , fault detection and isolation , reliability engineering , electrical engineering , voltage , control (management) , art , literature , artificial intelligence , seismology , geology , psychology , chemistry , actuator , organic chemistry , psychoanalysis
Considering that so far all studies regarding multiphase drives fault tolerance performance have been carried out making use of conventional two‐level inverters, this study discusses the fault tolerance performance of a six‐phase drive system based on a dual inverter under single‐, two‐, or three‐phase open‐circuit fault. Aiming applications where simplicity and low computation efforts are required and fast dynamic response is not imperative, an open‐loop volts/hertz ( V / f ) compensation strategy is discussed in order to keep the rated operation even after the occurrence of the fault, assuring the maintenance of sinusoidal flux. The six‐phase machine mathematical model after the fault is detailed and utilised to elaborate the compensation strategy. Simulation and experimental results show the validity of the discussed solution and its feasibility.