A Generalized Method to Generate Carrier-Based 3L PWM Techniques Using Two Parallel Interleaved 2L VSIs

Kapil Shukla*, Ramkrishan Maheshwari

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Two parallel interleaved two-level (2L) three-phase voltage source inverters (VSIs) can be analyzed as a single three-level (3L) VSI. A generalized carrier-based method is proposed in this paper for implementing different 3L pulsewidth modulation (PWM) techniques using two parallel interleaved 2L VSIs. The proposed method modifies the given three-phase reference signals of 3L VSI for implementation of the PWM technique using two parallel interleaved 2L VSIs. The influence of nonidealities on the equivalent 3L PWM switching sequences is also discussed. To overcome the effect of nonidealities, a new modified discontinuous PWM technique (MDPWM1) is proposed. The analysis of different performance indices is carried out for different 3L PWM techniques, and the key advantages of different PWM techniques are identified. Simulation and experimental results are also presented.

Original languageEnglish
JournalIEEE Transactions on Industrial Electronics
Volume66
Issue number6
Pages (from-to)4177-4188
ISSN0278-0046
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes

Keywords

  • Interleaving
  • pulsewidth modulation (PWM)
  • three-level (3L)
  • two-level (2L)
  • voltage-source inverter (VSI)

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