Minimum torque ripple pulse width-modulation with reduced switching frequency for multi-megawatt motor drive

Hyun Sam Jung, Chae Eun Hwang, Hyeon Sik Kim, Seung Ki Sul, An Heewon, Hyunjae Yoo

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

1 Scopus citations

Abstract

In this paper, the characteristics of ripple current of multi-megawatt induction motor fed by a PWM inverter is investigated. And, based on the investigation a novel PWM scheme is devised to reduce the switching loss of the inverter under the same torque ripple of the induction motor. The proposed PWM is composed with two parts. One is Minimum Torque Ripple Pulse-Width Modulation (MTRPWM) which is optimized in terms of minimum torque ripple in high Modulation Index. The other is a part to decide a minimum switching frequency while keeping the average torque ripple under the allowable value at the various operating conditions. It is named RSF. Consequently, only changing PWM method from conventional fixed switching frequency CPWM to the proposed PWM with RSF, the switching loss of inverter driving 3.5MW induction motor has been reduced by 51.6%, when MI is 1.12.

Original languageEnglish
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages620-626
Number of pages7
ISBN (Electronic)9781509053667
DOIs
StatePublished - 17 May 2017
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: 26 Mar 201730 Mar 2017

Publication series

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

Conference

Conference32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Country/TerritoryUnited States
CityTampa
Period26/03/1730/03/17

Keywords

  • Fan
  • Motor drive
  • Pulse Width Modulation
  • Pump
  • Switching loss
  • Torque ripple

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