Active Power Decoupling Control Scheme for Distorted Grids

Ahmad Khan, Mohammad B. Shadmand, Haitham Abu-Rub

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently, the differential buck topology was introduced to compensate the 2 nd order power pulsation of singlephase systems. Specifically, the Common-Mode (CM) operation of the differential buck is utilized for active power ripple mitigation, while the Differential-Mode (DM) operation is used as an active power transporting port. Thus, compared to the available active power ripple mitigation methods in the literature; the differential buck topology does not require supplementary gate drives, power semiconductors, and energy storage elements. Besides, the differential buck converter is suitable for non-isolated systems due to its inherent leakage current suppression characteristic. Therefore, this paper proposes an improved active power decoupling scheme for active rectifiers based on the differential buck topology that are tied to distorted power grids. In addition, it will be shown that for a grid that is distorted to n th harmonic with a DC component, the DCbus ripple's harmonic components are from 1 st to 2n th harmonic. The theoretical analyses are validated with a 1 kW rectifier system connected to 120Vrms/50Hz power grid that is distorted by 2 nd , 3 rd , 4 th and 5 th order harmonics with a DC component. The results are aimed to show a ripple free DC-bus voltage with just 30 μF capacitor even when the current supplied from the grid is highly distorted.

Original languageEnglish
Title of host publication2019 IEEE Power and Energy Conference at Illinois, PECI 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728102948
DOIs
Publication statusPublished - 24 Apr 2019
Event2019 IEEE Power and Energy Conference at Illinois, PECI 2019 - Champaign, United States
Duration: 28 Feb 20191 Mar 2019

Publication series

Name2019 IEEE Power and Energy Conference at Illinois, PECI 2019

Conference

Conference2019 IEEE Power and Energy Conference at Illinois, PECI 2019
CountryUnited States
CityChampaign
Period28/2/191/3/19

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Keywords

  • Active Power Decoupling (APD)
  • Active Rectifiers
  • Differential Buck
  • Non-isolated
  • Transformer-less

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Khan, A., Shadmand, M. B., & Abu-Rub, H. (2019). Active Power Decoupling Control Scheme for Distorted Grids. In 2019 IEEE Power and Energy Conference at Illinois, PECI 2019 [8698920] (2019 IEEE Power and Energy Conference at Illinois, PECI 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PECI.2019.8698920