A nine-level inverter topology for medium-voltage induction motor drive with open-end stator winding

P. P. Rajeevan, K. Sivakumar, K. Gopakumar, Chintan Patel, Haitham Abu-Rub

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

A new scheme for nine-level voltage space-vector generation for medium-voltage induction motor (IM) drives with open-end stator winding is presented in this paper. The proposed nine-level power converter topology consists of two conventional three-phase two-level voltage source inverters powered by isolated dc sources and six floating-capacitor-connected H-bridges. The H-bridge capacitor voltages are effectively maintained at the required asymmetrical levels by employing a space vector modulation (SVPWM) based control strategy. An interesting feature of this topology is its ability to function in five-or three-level mode, in the entire modulation range, at full-power rating, in the event of any failure in the H-bridges. This feature significantly improves the reliability of the proposed drive system. Each leg of the three-phase two-level inverters used in this topology switches only for a half cycle of the reference voltage waveform. Hence, the effective switching frequency is reduced by half, resulting in switching loss reduction in high-voltage devices. The transient as well as the steady-state performance of the proposed nine-level inverter-fed IM drive system is experimentally verified in the entire modulation range including the overmodulation region.

Original languageEnglish
Article number6236146
Pages (from-to)3627-3636
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume60
Issue number9
DOIs
Publication statusPublished - 2013

Fingerprint

Induction motors
Stators
Topology
Electric potential
Modulation
Vector spaces
Capacitors
Power converters
Switching frequency
Switches

Keywords

  • Induction motor (IM) drives
  • multilevel inverters

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

A nine-level inverter topology for medium-voltage induction motor drive with open-end stator winding. / Rajeevan, P. P.; Sivakumar, K.; Gopakumar, K.; Patel, Chintan; Abu-Rub, Haitham.

In: IEEE Transactions on Industrial Electronics, Vol. 60, No. 9, 6236146, 2013, p. 3627-3636.

Research output: Contribution to journalArticle

Rajeevan, P. P. ; Sivakumar, K. ; Gopakumar, K. ; Patel, Chintan ; Abu-Rub, Haitham. / A nine-level inverter topology for medium-voltage induction motor drive with open-end stator winding. In: IEEE Transactions on Industrial Electronics. 2013 ; Vol. 60, No. 9. pp. 3627-3636.
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