A New Family of Multilevel Grid Connected Inverters Based on Packed U Cell Topology

Abstract	In this paper a novel packed U cell (PUC) based multilevel grid connected inverter is proposed. Unlike the U cell arrangement which consists of two power switches and one capacitor, in the proposed converter topology a lower DC power supply from renewable energy resources such as photovoltaic arrays (PV) is used as a base power source. The proposed topology offers higher efficiency and lower cost using a small number of power switches and a lower DC power source which is supplied from renewable energy resources. Other capacitor voltages are extracted from the base lower DC power source using isolated DC-DC power converters. The operation principle of proposed transformerless multilevel grid connected inverter is analyzed theoretically. Operation of the proposed multilevel grid connected inverter is verified through simulation studies. An experimental prototype using STM32F407 discovery controller board is performed to verify the simulation results.
Item Type	Journal Article
Title	A New Family of Multilevel Grid Connected Inverters Based on Packed U Cell Topology
Author	Pakdel Majid Jalilzadeh Saeid
Publication	Scientific Reports
Page	12396
Date	2017-9-29
Journal Abbr	Sci Rep
DOI	10.1038/s41598-017-12806-5
ISSN	2045-2322
Language	English
URL	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5622103/
Library Catalog	PubMed Central
Extra	PMID: 28963473 PMCID: PMC5622103
Tags	Multilevel Grid, Inverters, Topology

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