Optimal surplus harmonic distribution in selected harmonic elimination PWM technique for multilevel inverters

Li Li, Dariusz Czarkowski, Yaguang Liu, Pragasen Pillay

Research output: Contribution to conferencePaper

Abstract

A concept of optimal surplus harmonics distribution in selective harmonic elimination PWM technique for multilevel inverters is introduced in this paper. There are several performance indexes that can be optimized in PWM inverters, e.g., distortion factor, current or voltage total harmonic distortion, or efficiency. Minimization of magnetic noise is selected as an example here. Several methods of alleviating the magnetic noise problems in PWM inverters, like harmonic decentralization and random PWM modulation, have been given in literature but only for three-level (single-cell) inverters. Numerical difficulties associated with a solution of PWM harmonic elimination equations for multilevel systems are overcome by using a nonconstrained optimization. Simulation and experimental results are presented for a double-cell series-connected voltage source PWM inverter. The theoretical and experimental results are in a very good agreement.

Original languageEnglish (US)
Pages589-594
Number of pages6
StatePublished - Dec 1 1999
EventThe 25th Annual Conference of the IEEE Industrial Electronics Society (IECON'99) - San Jose, CA, USA
Duration: Nov 29 1999Dec 3 1999

Other

OtherThe 25th Annual Conference of the IEEE Industrial Electronics Society (IECON'99)
CitySan Jose, CA, USA
Period11/29/9912/3/99

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ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Li, L., Czarkowski, D., Liu, Y., & Pillay, P. (1999). Optimal surplus harmonic distribution in selected harmonic elimination PWM technique for multilevel inverters. 589-594. Paper presented at The 25th Annual Conference of the IEEE Industrial Electronics Society (IECON'99), San Jose, CA, USA, .