PWM Strategy for 3Phase Active Front End Cascaded 5 Level NPC H-Bridge

Hyun Sam Jung, Hwigon Kim, Seung Ki Sul

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

3 Scopus citations

Abstract

Cascaded H-Bridge, CHB, is one of the most widely used topologies in medium voltage drive applications. Recently, regenerative capability has been required to several loads such as laminators, downhill conveyors, and mill drives. Therefore, topologies for Active Front End (AFE)-CHB had been proposed and implemented. In this paper, PWM strategy for AFE 5 Level Cascaded H-Bridge is developed. Conventional PWMs, Phase Shift PWM and Level Shift PWM are analyzed in terms of current harmonics, switching loss, loss distribution, DC-link voltages ripple, and balancing DC-link voltages. To overcome the demerits of the conventional PWM methods, in this paper a novel PWM strategy is proposed. Through the proposed PWM method, the switching loss can be evenly distributed between legs, and THD can be reduced to 60% compared with THD of the conventional method.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2993-2998
Number of pages6
ISBN (Electronic)9781479973118
DOIs
StatePublished - 3 Dec 2018
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Conference

Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/TerritoryUnited States
CityPortland
Period23/09/1827/09/18

Keywords

  • Active Front End Cascaded 5 Level NPC H-Bridge
  • Cascaded H-bridge
  • Pulse Width Modulation

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