Power pulsation decoupling in a series-stacked PV- Battery inverter

Namwon Kim, Babak Parkhideh

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

2 Scopus citations

Abstract

This paper presents the design of an energy buffer decoupling double-line-frequency AC power pulsation from main DC power sources in the single-phase series-stacked PV-battery inverter. As the active decoupling technique reducing the amount of capacitance required to stabilize the DC-bus voltage and achieving elimination of electrolytic capacitors, the series-stacked buffer architecture is adopted. In this work, the focus is on the optimization of the buffer design in the series-stacked PV-battery inverter and presenting the control scheme of the partial-power DC-DC optimizer to avoid processing the double-line-frequency AC current through all the DC sources: a PV string and a battery. The steady-state operation of the AC power pulsation decoupling of the series-stacked PV-battery inverter is demonstrated and verified through the controller hardware-in-the-loop test.

Original languageEnglish
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages161-166
Number of pages6
ISBN (Electronic)9781538683309
DOIs
StatePublished - May 24 2019
Externally publishedYes
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: Mar 17 2019Mar 21 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
Period03/17/1903/21/19

Funding

ACKNOWLEDGMENT This work is supported by Energy Production and Infrastructure Center (EPIC), Electrical and Computer Engineering Department at the University of North Carolina at Charlotte.

Keywords

  • Active filter
  • Double-line-frequency AC current bypass control
  • Partial power processing
  • Power pulsation decoupling
  • Series-stacked buffer
  • Series-stacked pv-battery inverter
  • Single-phase dc-ac inverter

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