Open AccessFive-level Direct Torque Control with Balancing Strategy of Double Star Induction Machine
Author(s) -
Elakhdar Benyoussef,
Said Barkat
Publication year - 2020
Publication title -
international journal of systems applications, engineering and development
Language(s) - English
Resource type - Journals
ISSN - 2074-1308
DOI - 10.46300/91015.2020.14.16
Subject(s) - control theory (sociology) , torque , direct torque control , waveform , inverter , total harmonic distortion , voltage , distortion (music) , direct current , star (game theory) , computer science , engineering , control (management) , induction motor , electronic engineering , physics , electrical engineering , artificial intelligence , amplifier , cmos , thermodynamics , astrophysics
This work relates to the study of direct torque control of the double star induction machine drive fed by two five-level diode-clamped inverters. The analysis of the three-phase direct torque control shows that this concept can be extended easily to double star induction machine even when it is fed by a multilevel inverter. Diode-clamped inverter, as one of the prominent multilevel inverters, has several advantages like high voltage and low current waveform distortion. However, it suffers from the problem of neutral point potential variation. The variation causes an unbalance in the DC-link voltage levels and increases consequently the current waveform distortion. This problem can be solved in satisfactory way by using multilevel direct torque control equipped by a balancing strategy. The simulation results, illustrating the steady state and dynamic performances, prove the effectiveness of the proposed control approach.