A multilevel inverter system for an induction motor with open-end windings

Author

Somasekhar, V.T. ; Gopakumar, K. ; Baiju, M.R. ; Mohapatra, Krishna K. ; Umanand, L.

Author_Institution

Centre for Electron. Design & Technol., Indian Inst. of Sci., Bangalore, India

Volume

52

Issue

3

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

824

Lastpage

836

Abstract

In this paper, a multilevel inverter system for an open-end winding induction motor drive is described. Multilevel inversion is achieved by feeding an open-end winding induction motor with two two-level inverters in cascade (equivalent to a three-level inverter) from one end and a single two-level inverter from the other end of the motor. The combined inverter system with open-end winding induction motor produces voltage space-vector locations identical to a six-level inverter. A total of 512 space-vector combinations are available in the proposed scheme, distributed over 91 space-vector locations. The proposed inverter drive scheme is capable of producing a multilevel pulsewidth-modulation (PWM) waveform for the phase voltage ranging from a two-level waveform to a six-level waveform depending on the modulation range. A space-vector PWM scheme for the proposed drive is implemented using a 1.5-kW induction motor with open-end winding structure.

Keywords

PWM invertors; induction motor drives; machine windings; 1.5 kW; PWM scheme; induction motor drive; multilevel inverter system; open-end windings; pulsewidth-modulation; voltage space-vector location; Circuit topology; Induction motor drives; Induction motors; Motor drives; Phase modulation; Pulse inverters; Pulse width modulation inverters; Space vector pulse width modulation; Stator windings; Voltage; Induction motor drive; multilevel inverters; open-end winding; pulsewidth-modulation (PWM) strategy;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2005.847584

Filename

1435694