Closed-loop Elimination of Low-order Sideband Harmonics in Parallel-Connected Low-Pulse Ratio VSIs

Tao Xu, Feng Gao, Xiongfei Wang, Tianqu Hao, Dongsheng Yang, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

This paper proposes a closed-loop pulse width modulation (PWM) carrier phase shifting method for eliminating the low-order sideband harmonics in parallel-connected low-pulse ratio VSIs. A current sensor is added to measure the THD of total current to adjust the PWM carrier phase of inverters with closed-loop control. First, the low-order sideband harmonics caused by the multiple modulation references are analyzed. Then, the basic idea and the realization of the closed-loop PWM carrier phase shifting method are discussed. Finally, simulations and experimental results verified the proposed method.
Original languageEnglish
Title of host publicationProceedings of the IEEE Energy Conversion Congress and Exposition (ECCE 2018)
Number of pages7
Place of PublicationUSA
PublisherIEEE Press
Publication dateSep 2018
Pages2271 - 2277
ISBN (Print)978-1-4799-7313-2
ISBN (Electronic)978-1-4799-7312-5
DOIs
Publication statusPublished - Sep 2018
EventIEEE Energy Conversion Congress & Exposition ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018
http://www.ieee-ecce.org/2018/

Conference

ConferenceIEEE Energy Conversion Congress & Exposition ECCE 2018
CountryUnited States
CityPortland
Period23/09/201827/09/2018
Internet address

Keywords

  • low-pulse ration inverter
  • low order sideband harmonics
  • global synchronous PWM
  • closed-loop control

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