A transformerless single-phase symmetrical Z-source HERIC inverter with reduced leakage currents for PV systems

Kerui Li, Yanfeng Shen, Yongheng Yang, Zian Qin, Frede Blaabjerg

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

11 Citations (Scopus)

Abstract

A transformerless single-phase symmetric Z-source HERIC inverter featuring low leakage currents is presented in this paper. It is an attempt to utilize the Highly Efficient and Reliable Inverter Concept (HERIC) and an impedance source (Z-source) network to maintain a constant common mode voltage and thus low leakage currents in PV applications. The symmetric Z-source HERIC inverter requires two extra active switches. Nevertheless, the operation frequency of the two switches is the line frequency, leading to negligible losses. More importantly, the performance in terms of low leakage currents and harmonics is improved. Experimental tests are performed to validate the analysis and performance of the proposed system.
Original languageEnglish
Title of host publicationProceeding of IEEE-APEC' 2018
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages356-361
Number of pages6
ISBN (Electronic)978-1-5386-1180-7
DOIs
Publication statusPublished - 2018
EventAPEC 2018: 33rd Annual IEEE Applied Power Conference and Exposition - San Antonio, TX, United States
Duration: 4 Mar 20188 Mar 2018
Conference number: 33
http://www.apec-conf.org

Conference

ConferenceAPEC 2018
CountryUnited States
CitySan Antonio, TX
Period4/03/188/03/18
Internet address

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