A Multilevel Open-End Winding Six-Phase Induction Motor Drive Topology Based on Three Two-Level Three-Phase Inverters

This paper presents a nine-leg (9 L) multilevel inverter to drive an asymmetrical six-phase induction machine in an open-end winding (OEW) configuration. The system is based on three conventional two-level three-phase voltage source inverters (VSIs) with three, two, or one isolated dc links. A machi...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on industry applications Vol. 59; no. 5; pp. 1 - 13
Main Authors Soares, Emerson L., Jacobina, Cursino B., de Freitas, Nayara B., Rocha, Nady, Maia, Ayslan C. N., Lima, Antonio M. N.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Asymmetrical six-phase induction motor drives
Coils (windings)
Comparative studies
Electric potential
Harmonic distortion
Induction motors
Inverters
Multilevel inverters
multiphase machines
open-end winding
Pulse duration modulation
Pulse width modulation
space vector pulse width modulation
Stator windings
Switches
Topology
Voltage
Winding
Windings
Online AccessGet full text

Cover

More Information
Summary:This paper presents a nine-leg (9 L) multilevel inverter to drive an asymmetrical six-phase induction machine in an open-end winding (OEW) configuration. The system is based on three conventional two-level three-phase voltage source inverters (VSIs) with three, two, or one isolated dc links. A machine with two sets of 30 degrees shifted three-phase stator windings is considered. The paper discusses the converters operating principles and proposes a simple space-vector pulse-width modulation (SV-PWM) and its implementation through equivalent level-shifted PWM (LS-PWM). Also, a comparative study is presented regarding the discussed 9L-OEW systems and two conventional drives: the six-leg two-level (6 L), and the 12-leg OEW (12L-OEW) systems. The figures of merit were the number of components, required dc-link voltage, voltage and current harmonic distortions, torque ripple, and semiconductor losses. Simulations and experiments show results for a 1 HP machine. Finally, the paper concludes that the characteristics of the 9L-OEW system using three isolated dc links fit between the 6 L and 12L-OEW conventional systems.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2023.3291354