An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System

Kaifeng Wang; Panbao Wang; Guihua Liu; Wei Wang; Dianguo Xu

doi:10.23919/ICEMS.2018.8549160

An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System

School of Electrical Engineering and Automation, Harbin Institute of Technology

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

Abstract

Aiming at the integration of renewable energy generations in medium-voltage DC distribution networks, this paper studies a new scheme of the photovoltaic (PV) energy-stored converter in input-series-output-series (ISOS) structure. Based on traditional phase-shifting converter, a new three-port impedance-type DC-DC converter is proposed by adding a quasi-Z-source (qZS) network. The battery connected in parallel with a capacitor of the qZS network works as the energy storage unit to deal with partial shading and power fluctuations of PV arrays. According to the characteristics of the new converter, a phase-shifting shoot-through modulation method is proposed. Meanwhile, a distributed voltage-sharing control is applied to the ISOS structure. Based on the modulation method mentioned above, the small signal model of the converter with one module is established using the state-space averaging method. Furthermore, the stability of the system with the control strategy proposed in this paper is analyzed. Finally, the effectiveness of the proposed phase-shifting shoot-through modulation method and the voltage-sharing control strategy are verified by simulation.

Original language	English
Title of host publication	ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1116-1121
Number of pages	6
ISBN (Electronic)	9788986510201
DOIs	https://doi.org/10.23919/ICEMS.2018.8549160
State	Published - 27 Nov 2018
Externally published	Yes
Event	21st International Conference on Electrical Machines and Systems, ICEMS 2018 - Jeju, Korea, Republic of Duration: 7 Oct 2018 → 10 Oct 2018

Publication series

Name	ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems

Conference

Conference	21st International Conference on Electrical Machines and Systems, ICEMS 2018
Country/Territory	Korea, Republic of
City	Jeju
Period	7/10/18 → 10/10/18

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

phase-shifting shoot-through modulation
photovoltaic power system
quasi-Z-source converter

Access to Document

10.23919/ICEMS.2018.8549160

Cite this

Wang, K., Wang, P., Liu, G., Wang, W., & Xu, D. (2018). An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System. In ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems (pp. 1116-1121). Article 8549160 (ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/ICEMS.2018.8549160

Wang, Kaifeng ; Wang, Panbao ; Liu, Guihua et al. / An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System. ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1116-1121 (ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems).

@inproceedings{91c0e2549dda42599bb12086cb8ec4e3,

title = "An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System",

abstract = "Aiming at the integration of renewable energy generations in medium-voltage DC distribution networks, this paper studies a new scheme of the photovoltaic (PV) energy-stored converter in input-series-output-series (ISOS) structure. Based on traditional phase-shifting converter, a new three-port impedance-type DC-DC converter is proposed by adding a quasi-Z-source (qZS) network. The battery connected in parallel with a capacitor of the qZS network works as the energy storage unit to deal with partial shading and power fluctuations of PV arrays. According to the characteristics of the new converter, a phase-shifting shoot-through modulation method is proposed. Meanwhile, a distributed voltage-sharing control is applied to the ISOS structure. Based on the modulation method mentioned above, the small signal model of the converter with one module is established using the state-space averaging method. Furthermore, the stability of the system with the control strategy proposed in this paper is analyzed. Finally, the effectiveness of the proposed phase-shifting shoot-through modulation method and the voltage-sharing control strategy are verified by simulation.",

keywords = "phase-shifting shoot-through modulation, photovoltaic power system, quasi-Z-source converter",

author = "Kaifeng Wang and Panbao Wang and Guihua Liu and Wei Wang and Dianguo Xu",

note = "Publisher Copyright: {\textcopyright} 2018 KIEE EMECS (KIEE Electrical Machinery and Energy Conversion Systems).; 21st International Conference on Electrical Machines and Systems, ICEMS 2018 ; Conference date: 07-10-2018 Through 10-10-2018",

year = "2018",

month = nov,

day = "27",

doi = "10.23919/ICEMS.2018.8549160",

language = "英语",

series = "ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1116--1121",

booktitle = "ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems",

address = "美国",

}

Wang, K, Wang, P , Liu, G , Wang, W & Xu, D 2018, An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System. in ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems., 8549160, ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems, Institute of Electrical and Electronics Engineers Inc., pp. 1116-1121, 21st International Conference on Electrical Machines and Systems, ICEMS 2018, Jeju, Korea, Republic of, 7/10/18. https://doi.org/10.23919/ICEMS.2018.8549160

An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System. / Wang, Kaifeng; Wang, Panbao ; Liu, Guihua et al.
ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems. Institute of Electrical and Electronics Engineers Inc., 2018. p. 1116-1121 8549160 (ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems).

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

TY - GEN

T1 - An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System

AU - Wang, Kaifeng

AU - Wang, Panbao

AU - Liu, Guihua

AU - Wang, Wei

AU - Xu, Dianguo

PY - 2018/11/27

Y1 - 2018/11/27

N2 - Aiming at the integration of renewable energy generations in medium-voltage DC distribution networks, this paper studies a new scheme of the photovoltaic (PV) energy-stored converter in input-series-output-series (ISOS) structure. Based on traditional phase-shifting converter, a new three-port impedance-type DC-DC converter is proposed by adding a quasi-Z-source (qZS) network. The battery connected in parallel with a capacitor of the qZS network works as the energy storage unit to deal with partial shading and power fluctuations of PV arrays. According to the characteristics of the new converter, a phase-shifting shoot-through modulation method is proposed. Meanwhile, a distributed voltage-sharing control is applied to the ISOS structure. Based on the modulation method mentioned above, the small signal model of the converter with one module is established using the state-space averaging method. Furthermore, the stability of the system with the control strategy proposed in this paper is analyzed. Finally, the effectiveness of the proposed phase-shifting shoot-through modulation method and the voltage-sharing control strategy are verified by simulation.

AB - Aiming at the integration of renewable energy generations in medium-voltage DC distribution networks, this paper studies a new scheme of the photovoltaic (PV) energy-stored converter in input-series-output-series (ISOS) structure. Based on traditional phase-shifting converter, a new three-port impedance-type DC-DC converter is proposed by adding a quasi-Z-source (qZS) network. The battery connected in parallel with a capacitor of the qZS network works as the energy storage unit to deal with partial shading and power fluctuations of PV arrays. According to the characteristics of the new converter, a phase-shifting shoot-through modulation method is proposed. Meanwhile, a distributed voltage-sharing control is applied to the ISOS structure. Based on the modulation method mentioned above, the small signal model of the converter with one module is established using the state-space averaging method. Furthermore, the stability of the system with the control strategy proposed in this paper is analyzed. Finally, the effectiveness of the proposed phase-shifting shoot-through modulation method and the voltage-sharing control strategy are verified by simulation.

KW - phase-shifting shoot-through modulation

KW - photovoltaic power system

KW - quasi-Z-source converter

UR - https://www.scopus.com/pages/publications/85060048522

U2 - 10.23919/ICEMS.2018.8549160

DO - 10.23919/ICEMS.2018.8549160

M3 - 会议稿件

AN - SCOPUS:85060048522

T3 - ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems

SP - 1116

EP - 1121

BT - ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 21st International Conference on Electrical Machines and Systems, ICEMS 2018

Y2 - 7 October 2018 through 10 October 2018

ER -

Wang K, Wang P , Liu G , Wang W , Xu D. An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System. In ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1116-1121. 8549160. (ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems). doi: 10.23919/ICEMS.2018.8549160

An Energy-stored Quasi-Z-Source H-Bridge Converter and Coordinated Control Strategy for Medium-Voltage DC Photovoltaic Power System

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Cite this