Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications

Yushan Liu; Haitham Abu-Rub; Baoming Ge

doi:10.1109/APEC.2016.7468023

Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications

Yushan Liu
, Haitham Abu-Rub
, Baoming Ge

Texas A&M University at Qatar
Hamad bin Khalifa University
Texas A&M University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

16 Scopus citations

Abstract

A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for high-voltage (HV) dc integration of photovoltaic (PV) power. The qZS-MCC comprises front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs) in series. By the qZS-HB handling PV voltage and power variations, a unified duty cycle is applicable for the front-end isolation converter of all SMs. Resultantly, the proposed system improves the quasi-Z-source cascaded multilevel inverter and the modular multilevel converter based PV counterparts in terms of no double-line-frequency pulsating power so as to low qZS impedance, HV dc collection of PV power thus to reduce conversion stages for dc transmission, and overcoming the limit of series-output voltage with simple galvanic isolation. Operating principle and power loss evaluation of the qZS-MCC are presented. Parameter design guidelines and simulation are addressed based on a 60-kW SM; experimental results are carried out on a downscaled prototype as a proof-of-concept, demonstrating the validity of the proposed system.

Original language	English
Title of host publication	2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1214-1219
Number of pages	6
ISBN (Electronic)	9781467383936
DOIs	https://doi.org/10.1109/APEC.2016.7468023
State	Published - 10 May 2016
Externally published	Yes
Event	31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016 - Long Beach, United States Duration: 20 Mar 2016 → 24 Mar 2016

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume	2016-May

Conference

Conference	31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Country/Territory	United States
City	Long Beach
Period	20/03/16 → 24/03/16

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Photovoltaic power system
dc-dc power conversion
galvanic isolation
quasi-Z-source converter

Access to Document

10.1109/APEC.2016.7468023

Cite this

Liu, Y., Abu-Rub, H., & Ge, B. (2016). Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications. In 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016 (pp. 1214-1219). Article 7468023 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2016-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2016.7468023

Liu, Yushan ; Abu-Rub, Haitham ; Ge, Baoming. / Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications. 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 1214-1219 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

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title = "Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications",

abstract = "A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for high-voltage (HV) dc integration of photovoltaic (PV) power. The qZS-MCC comprises front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs) in series. By the qZS-HB handling PV voltage and power variations, a unified duty cycle is applicable for the front-end isolation converter of all SMs. Resultantly, the proposed system improves the quasi-Z-source cascaded multilevel inverter and the modular multilevel converter based PV counterparts in terms of no double-line-frequency pulsating power so as to low qZS impedance, HV dc collection of PV power thus to reduce conversion stages for dc transmission, and overcoming the limit of series-output voltage with simple galvanic isolation. Operating principle and power loss evaluation of the qZS-MCC are presented. Parameter design guidelines and simulation are addressed based on a 60-kW SM; experimental results are carried out on a downscaled prototype as a proof-of-concept, demonstrating the validity of the proposed system.",

keywords = "Photovoltaic power system, dc-dc power conversion, galvanic isolation, quasi-Z-source converter",

author = "Yushan Liu and Haitham Abu-Rub and Baoming Ge",

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year = "2016",

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language = "英语",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

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Liu, Y, Abu-Rub, H & Ge, B 2016, Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications. in 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016., 7468023, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2016-May, Institute of Electrical and Electronics Engineers Inc., pp. 1214-1219, 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016, Long Beach, United States, 20/03/16. https://doi.org/10.1109/APEC.2016.7468023

Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications. / Liu, Yushan; Abu-Rub, Haitham; Ge, Baoming.
2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 1214-1219 7468023 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2016-May).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications

AU - Liu, Yushan

AU - Abu-Rub, Haitham

AU - Ge, Baoming

PY - 2016/5/10

Y1 - 2016/5/10

N2 - A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for high-voltage (HV) dc integration of photovoltaic (PV) power. The qZS-MCC comprises front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs) in series. By the qZS-HB handling PV voltage and power variations, a unified duty cycle is applicable for the front-end isolation converter of all SMs. Resultantly, the proposed system improves the quasi-Z-source cascaded multilevel inverter and the modular multilevel converter based PV counterparts in terms of no double-line-frequency pulsating power so as to low qZS impedance, HV dc collection of PV power thus to reduce conversion stages for dc transmission, and overcoming the limit of series-output voltage with simple galvanic isolation. Operating principle and power loss evaluation of the qZS-MCC are presented. Parameter design guidelines and simulation are addressed based on a 60-kW SM; experimental results are carried out on a downscaled prototype as a proof-of-concept, demonstrating the validity of the proposed system.

AB - A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for high-voltage (HV) dc integration of photovoltaic (PV) power. The qZS-MCC comprises front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs) in series. By the qZS-HB handling PV voltage and power variations, a unified duty cycle is applicable for the front-end isolation converter of all SMs. Resultantly, the proposed system improves the quasi-Z-source cascaded multilevel inverter and the modular multilevel converter based PV counterparts in terms of no double-line-frequency pulsating power so as to low qZS impedance, HV dc collection of PV power thus to reduce conversion stages for dc transmission, and overcoming the limit of series-output voltage with simple galvanic isolation. Operating principle and power loss evaluation of the qZS-MCC are presented. Parameter design guidelines and simulation are addressed based on a 60-kW SM; experimental results are carried out on a downscaled prototype as a proof-of-concept, demonstrating the validity of the proposed system.

KW - Photovoltaic power system

KW - dc-dc power conversion

KW - galvanic isolation

KW - quasi-Z-source converter

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U2 - 10.1109/APEC.2016.7468023

DO - 10.1109/APEC.2016.7468023

M3 - 会议稿件

AN - SCOPUS:84973595134

T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

SP - 1214

EP - 1219

BT - 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016

Y2 - 20 March 2016 through 24 March 2016

ER -

Liu Y, Abu-Rub H, Ge B. Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications. In 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc. 2016. p. 1214-1219. 7468023. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2016.7468023

Front-end isolated quasi-Z-source DC-DC converter modules in series for photovoltaic high-voltage DC applications

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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