Modelling and controller design of quasi-Z-source cascaded multilevel inverter-based three-phase grid-tie photovoltaic power system

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Quasi-Z source cascaded multilevel inverter (qZS-CMI) is an emerging topology applied to photovoltaic (PV) power system. It can overcome disadvantages of conventional CMI-based PV power system, because of achieving the balanced dc-link voltage through using its boost ability, and saving one-third modules. At present, there was not literature to disclose the modelling and controller design for qZS-CMI-based three-phase grid-tie PV power system. In this study, a control scheme for three-phase qZS-CMI-based grid-tie PV power system is proposed, where distributed maximum power point tracking (MPPT) and constant dc-link peak voltage are achieved for all qZS H-bridge inverter (qZS-HBI)-based PV modules, with grid-injected power in unity power factor. The detailed controller parameter design is demonstrated by using Bode plots and the built models of qZS-HBI-based PV module and whole system. A test bench of 7-level three-phase qZS-CMI-based PV power system is built. Simulation and experimental results validate the proposed control scheme and design method.

Original languageEnglish
Pages (from-to)925-936
Number of pages12
JournalIET Renewable Power Generation
Volume8
Issue number8
DOIs
Publication statusPublished - 1 Nov 2014
Externally publishedYes

Fingerprint

Controllers
Electric potential
Topology

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

Cite this

@article{1820418182fa4d36a0a796bd2b69b7f9,
title = "Modelling and controller design of quasi-Z-source cascaded multilevel inverter-based three-phase grid-tie photovoltaic power system",
abstract = "Quasi-Z source cascaded multilevel inverter (qZS-CMI) is an emerging topology applied to photovoltaic (PV) power system. It can overcome disadvantages of conventional CMI-based PV power system, because of achieving the balanced dc-link voltage through using its boost ability, and saving one-third modules. At present, there was not literature to disclose the modelling and controller design for qZS-CMI-based three-phase grid-tie PV power system. In this study, a control scheme for three-phase qZS-CMI-based grid-tie PV power system is proposed, where distributed maximum power point tracking (MPPT) and constant dc-link peak voltage are achieved for all qZS H-bridge inverter (qZS-HBI)-based PV modules, with grid-injected power in unity power factor. The detailed controller parameter design is demonstrated by using Bode plots and the built models of qZS-HBI-based PV module and whole system. A test bench of 7-level three-phase qZS-CMI-based PV power system is built. Simulation and experimental results validate the proposed control scheme and design method.",
author = "Yushan Liu and Baoming Ge and Haitham Abu-Rub",
year = "2014",
month = "11",
day = "1",
doi = "10.1049/iet-rpg.2013.0221",
language = "English",
volume = "8",
pages = "925--936",
journal = "IET Renewable Power Generation",
issn = "1752-1416",
publisher = "Institution of Engineering and Technology",
number = "8",

}

TY - JOUR

T1 - Modelling and controller design of quasi-Z-source cascaded multilevel inverter-based three-phase grid-tie photovoltaic power system

AU - Liu, Yushan

AU - Ge, Baoming

AU - Abu-Rub, Haitham

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Quasi-Z source cascaded multilevel inverter (qZS-CMI) is an emerging topology applied to photovoltaic (PV) power system. It can overcome disadvantages of conventional CMI-based PV power system, because of achieving the balanced dc-link voltage through using its boost ability, and saving one-third modules. At present, there was not literature to disclose the modelling and controller design for qZS-CMI-based three-phase grid-tie PV power system. In this study, a control scheme for three-phase qZS-CMI-based grid-tie PV power system is proposed, where distributed maximum power point tracking (MPPT) and constant dc-link peak voltage are achieved for all qZS H-bridge inverter (qZS-HBI)-based PV modules, with grid-injected power in unity power factor. The detailed controller parameter design is demonstrated by using Bode plots and the built models of qZS-HBI-based PV module and whole system. A test bench of 7-level three-phase qZS-CMI-based PV power system is built. Simulation and experimental results validate the proposed control scheme and design method.

AB - Quasi-Z source cascaded multilevel inverter (qZS-CMI) is an emerging topology applied to photovoltaic (PV) power system. It can overcome disadvantages of conventional CMI-based PV power system, because of achieving the balanced dc-link voltage through using its boost ability, and saving one-third modules. At present, there was not literature to disclose the modelling and controller design for qZS-CMI-based three-phase grid-tie PV power system. In this study, a control scheme for three-phase qZS-CMI-based grid-tie PV power system is proposed, where distributed maximum power point tracking (MPPT) and constant dc-link peak voltage are achieved for all qZS H-bridge inverter (qZS-HBI)-based PV modules, with grid-injected power in unity power factor. The detailed controller parameter design is demonstrated by using Bode plots and the built models of qZS-HBI-based PV module and whole system. A test bench of 7-level three-phase qZS-CMI-based PV power system is built. Simulation and experimental results validate the proposed control scheme and design method.

UR - http://www.scopus.com/inward/record.url?scp=84908462389&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908462389&partnerID=8YFLogxK

U2 - 10.1049/iet-rpg.2013.0221

DO - 10.1049/iet-rpg.2013.0221

M3 - Article

AN - SCOPUS:84908462389

VL - 8

SP - 925

EP - 936

JO - IET Renewable Power Generation

JF - IET Renewable Power Generation

SN - 1752-1416

IS - 8

ER -