A nine-level grid-connected photovoltaic inverter based on cascaded full-bridge with flying capacitor

Giampaolo Buticchi, Carlo Concari, Giovanni Franceschini, Emilio Lorenzani, Pericle Zanchetta

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

3 Citations (Scopus)

Abstract

This paper proposes a nine-level PWM grid-connected photovoltaic inverter for single-phase applications. The basic structure relies on two cascaded full-bridges supplied with different voltage levels. A flying capacitor provides the power supply for the lower voltage full-bridge. In order to increase the efficiency and keep the ground leakage current under control, a specific PWM strategy was developed and an additional leakage current reduction circuit was added to the basic structure of the cascaded full-bridge. Moreover, the regulation of the flying capacitor voltage is taken into account. Simulations and experimental results confirm the good performance of the proposed solution.

Original languageEnglish
Title of host publication2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
Pages1149-1156
Number of pages8
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh, NC, United States
Duration: 15 Sep 201220 Sep 2012

Publication series

Name2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012

Conference

Conference4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012
Country/TerritoryUnited States
CityRaleigh, NC
Period15/09/1220/09/12

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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