An efficient analytical inductor core loss calculation method for two-level and three-level PWM converters based on a user-friendly loss map

Jun Wang, Kfir J. Dagan, Xibo Yuan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

This paper proposes an efficient analytical approach to calculate the inductor core loss for Pulse Width Modulation (PWM) converters with the aid of a pre-built, user-friendly core loss map. Loss map is the most practical approach to accurately estimate the core loss of an inductor exposed to PWM operation. To predict the inductor core loss, the inputs of the loss map needs to be retrieved from the steady-state inductor voltage/current waveforms. For estimation purpose, an analytical approach is proposed in this paper, which enables mathematical and simplified computation of the operating space and core loss of the inductor in a PWM converter. The proposed approach is developed for both 2-level and 3-level converters and then validated by experiments. The results indicate that a 3-level converter operates the same inductor with less core loss compared to a 2-level converter, when the maximum current ripple is kept equivalent by halving the switching frequency in the 3-level converter.

Original languageEnglish
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2912-2919
Number of pages8
ISBN (Electronic)9781538683309
DOIs
StatePublished - 24 May 2019
Externally publishedYes
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: 17 Mar 201921 Mar 2019

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/TerritoryUnited States
CityAnaheim
Period17/03/1921/03/19

Keywords

  • Core loss
  • Loss map
  • Pulse Width Modulation
  • Three level converters
  • Two level converters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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