DC-Link Protection and Control in Modular Uninterruptible Power Supply

Jinghang Lu; Mehdi Savaghebi; Yajuan Guan; Saeed Golestan; Juan Carlos Vasquez Quintero; Josep M. Guerrero; Albert  Marzabal

doi:10.1109/TIE.2017.2760847

DC-Link Protection and Control in Modular Uninterruptible Power Supply

Jinghang Lu, Mehdi Savaghebi, Yajuan Guan, Saeed Golestan, Juan Carlos Vasquez Quintero, Josep M. Guerrero, Albert Marzabal

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

In this paper, a DC-link voltage protection (DCVP) control method is proposed to address the DC-link overvoltage issue due to power back-feeding in parallel Uninterruptible Power Supply (UPS) system. The proposed control method is able to protect the inverter against the excessive DC-link voltage, which increases the system reliability and robustness. Moreover, a current sharing control strategy is proposed by online regulating the virtual resistance of each UPS module. The proposed current sharing control strategy is able to address the circulating fundamental and harmonic current caused by the line impedance mismatching or power back-feeding issue in the UPS system. In addition, an improved consensus-based distributed controller is proposed to alleviate the overshoot issue during the transient process in voltage amplitude and frequency restoration. Finally, the feasibility of the proposed methods are verified by experimental results from the parallel UPS prototypes.

Original language	English
Article number	8060574
Journal	I E E E Transactions on Industrial Electronics
Volume	65
Issue number	5
Pages (from-to)	3942 - 3953
Number of pages	12
ISSN	0278-0046
DOIs	https://doi.org/10.1109/TIE.2017.2760847
Publication status	Published - May 2018

Keywords

Anti-windup
Consensus control
Current sharing
DC-link voltage protection (DCVP)
Uninterruptible power supply (UPS)
consensus control
uninterruptible power supply (UPS)
dc-link voltage protection (DCVP)
current sharing

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10.1109/TIE.2017.2760847

DC-Link Protection and Control in Modular Uninterruptible Power SupplyAccepted author manuscript, 1.76 MB

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@article{386353dbd0e045be9744564d038cab8c,

title = "DC-Link Protection and Control in Modular Uninterruptible Power Supply",

abstract = "In this paper, a DC-link voltage protection (DCVP) control method is proposed to address the DC-link overvoltage issue due to power back-feeding in parallel Uninterruptible Power Supply (UPS) system. The proposed control method is able to protect the inverter against the excessive DC-link voltage, which increases the system reliability and robustness. Moreover, a current sharing control strategy is proposed by online regulating the virtual resistance of each UPS module. The proposed current sharing control strategy is able to address the circulating fundamental and harmonic current caused by the line impedance mismatching or power back-feeding issue in the UPS system. In addition, an improved consensus-based distributed controller is proposed to alleviate the overshoot issue during the transient process in voltage amplitude and frequency restoration. Finally, the feasibility of the proposed methods are verified by experimental results from the parallel UPS prototypes.",

keywords = "Anti-windup, Consensus control, Current sharing, DC-link voltage protection (DCVP), Uninterruptible power supply (UPS), consensus control, uninterruptible power supply (UPS), dc-link voltage protection (DCVP), current sharing",

author = "Jinghang Lu and Mehdi Savaghebi and Yajuan Guan and Saeed Golestan and Quintero, {Juan Carlos Vasquez} and Guerrero, {Josep M.} and Albert Marzabal",

year = "2018",

month = may,

doi = "10.1109/TIE.2017.2760847",

language = "English",

volume = "65",

pages = "3942 -- 3953 ",

journal = "I E E E Transactions on Industrial Electronics",

issn = "0278-0046",

publisher = "IEEE",

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TY - JOUR

T1 - DC-Link Protection and Control in Modular Uninterruptible Power Supply

AU - Lu, Jinghang

AU - Savaghebi, Mehdi

AU - Guan, Yajuan

AU - Golestan, Saeed

AU - Quintero, Juan Carlos Vasquez

AU - Guerrero, Josep M.

AU - Marzabal, Albert

PY - 2018/5

Y1 - 2018/5

N2 - In this paper, a DC-link voltage protection (DCVP) control method is proposed to address the DC-link overvoltage issue due to power back-feeding in parallel Uninterruptible Power Supply (UPS) system. The proposed control method is able to protect the inverter against the excessive DC-link voltage, which increases the system reliability and robustness. Moreover, a current sharing control strategy is proposed by online regulating the virtual resistance of each UPS module. The proposed current sharing control strategy is able to address the circulating fundamental and harmonic current caused by the line impedance mismatching or power back-feeding issue in the UPS system. In addition, an improved consensus-based distributed controller is proposed to alleviate the overshoot issue during the transient process in voltage amplitude and frequency restoration. Finally, the feasibility of the proposed methods are verified by experimental results from the parallel UPS prototypes.

AB - In this paper, a DC-link voltage protection (DCVP) control method is proposed to address the DC-link overvoltage issue due to power back-feeding in parallel Uninterruptible Power Supply (UPS) system. The proposed control method is able to protect the inverter against the excessive DC-link voltage, which increases the system reliability and robustness. Moreover, a current sharing control strategy is proposed by online regulating the virtual resistance of each UPS module. The proposed current sharing control strategy is able to address the circulating fundamental and harmonic current caused by the line impedance mismatching or power back-feeding issue in the UPS system. In addition, an improved consensus-based distributed controller is proposed to alleviate the overshoot issue during the transient process in voltage amplitude and frequency restoration. Finally, the feasibility of the proposed methods are verified by experimental results from the parallel UPS prototypes.

KW - Anti-windup

KW - Consensus control

KW - Current sharing

KW - DC-link voltage protection (DCVP)

KW - Uninterruptible power supply (UPS)

KW - consensus control

KW - uninterruptible power supply (UPS)

KW - dc-link voltage protection (DCVP)

KW - current sharing

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U2 - 10.1109/TIE.2017.2760847

DO - 10.1109/TIE.2017.2760847

M3 - Journal article

SN - 0278-0046

VL - 65

SP - 3942

EP - 3953

JO - I E E E Transactions on Industrial Electronics

JF - I E E E Transactions on Industrial Electronics

IS - 5

M1 - 8060574

ER -

DC-Link Protection and Control in Modular Uninterruptible Power Supply

Abstract

Keywords

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TROY: UPS SLC-TROY Project

Cite this

DC-Link Protection and Control in Modular Uninterruptible Power Supply

Abstract

Keywords

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AUB Link

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Projects

TROY: UPS SLC-TROY Project

Cite this