1-MW quasi-Z-source based multilevel PV energy conversion system

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22 Citations (Scopus)

Abstract

This paper proposes a 1 MW grid-tie photovoltaic system by connecting quasi-Z-Source (qZS) networks into Cascaded H-Bridge (CHB) inverter. The proposed Power Conditioning System (PCS) consists of a 3-phase 48-cell CHB inverter where each module is fed by a qZS network. The proposed topology allows boosting the input voltage to a higher level while solving the traditional imbalance problem of DC-link voltage in CHB inverters. A multilevel output voltage waveform is produced using an enhanced phase shifted pulse width modulation technique, which inserts shoot-through states into the conventional zero states to control the qZS-CHB module. The effective control schemes are proposed to achieve grid-tie current injection, low Total Harmonic Distortion (THD) current, unity power factor, and DC-link voltage balance for all qZS-CHB inverter modules. A 1 MW system is built in MATLAB/SIMULINK environment to verify the proposed multilevel PV energy conversion system and its control principles.

Original languageEnglish
Title of host publicationProceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages224-229
Number of pages6
Volume2016-May
ISBN (Electronic)9781467380751
DOIs
Publication statusPublished - 19 May 2016
EventIEEE International Conference on Industrial Technology, ICIT 2016 - Taipei, Taiwan, Province of China
Duration: 14 Mar 201617 Mar 2016

Other

OtherIEEE International Conference on Industrial Technology, ICIT 2016
CountryTaiwan, Province of China
CityTaipei
Period14/3/1617/3/16

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Keywords

  • Grid Integration
  • Multilevel Inverter
  • Power Conditioning System
  • quasi-Z-Source Network

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Trabelsi, M., Abu-Rub, H., & Ge, B. (2016). 1-MW quasi-Z-source based multilevel PV energy conversion system. In Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016 (Vol. 2016-May, pp. 224-229). [7474755] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICIT.2016.7474755