A line-interactive UPS system implementation with series-parallel active power-line conditioning for three-phase, four-wire systems

Silva, S.A. Oliveira da; Donoso-Garcia, P.F.; Cortizo, P.C.; Seixas, P.F.

doi:10.1016/j.ijepes.2003.11.008

Cited by 23 publications

(4 citation statements)

References 9 publications

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“…where ( 35) and ( 36) are needed. Then, from the above current references, the auxiliary control inputs u sd and u sq can be calculated in a similar way to ( 35) and (36), resulting in…”

Section: Inner Current Control Of the Series Vscmentioning

confidence: 99%

Non-linear optimal controller for unified power quality conditioners

et al. 2011

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A new optimal control strategy for unified power quality conditioners (UPQC) is presented. This strategy is based on feedback linearisation. The UPQC consists of series and shunt converters, where the series converter usually works as a voltage source, and the shunt converter works as a current source. However, it is possible to use the series converter as a current source, and the shunt converter as a voltage source, as utilised in this study. As for this scheme, an optimal voltage angle at load terminals, in order to minimise the converter losses, is proposed. A comparison with the traditional UPQC, where series and shunt converters are considered to be voltage and current sources, respectively, is also presented.

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“…where ( 35) and ( 36) are needed. Then, from the above current references, the auxiliary control inputs u sd and u sq can be calculated in a similar way to ( 35) and (36), resulting in…”

Section: Inner Current Control Of the Series Vscmentioning

confidence: 99%

Non-linear optimal controller for unified power quality conditioners

et al. 2011

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“…1 shows the general power circuit configuration of the USPAF system. The USPAF structures are used in the literature such as two three-phase three-leg (3P3L) voltage source inverter (VSI) with split capacitor [7,[10][11][12][13][14], a 3P3L VSI for the series AF and a three-phase four-leg (3P4L) VSI for the parallel AF [15,16] and two 3P4L VSI topology [17] for solving power quality disturbances at the point of common coupling (PCC).…”

Section: Introductionmentioning

confidence: 99%

A four-leg unified series–parallel active filter system for periodic and non-periodic disturbance compensation

Uçar

Özdemir

2011

Electric Power Systems Research

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“…UPS systems have enabled the improvement of power source quality, providing clean and uninterruptible power to critical loads such as industrial process controls, computers, medical equipment, data communication systems and protection against power supply disturbances or interruptions [1][2][3] . UPS provides stable supply to the system in the present or absence of the input supply [4] .…”

Section: Introductionmentioning

confidence: 99%

Monitoring System for Uninterruptible Power Supply

Murad¹,

Isa²,

Rahman³

2007

American J. of Applied Sciences

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Abstract:In industrial process today, reliability of equipment is very important. Power supply must be able to cater the need of industrial process. In case of power failure, backup power supply system must be able to support the main process plant. This is to ensure smooth operation and product quality. In order to do this, uninterruptible power supply (UPS) system can be used to ensure the reliability, stability and consistency of the entire system. This UPS system must be monitored in order to enable them to react accordingly in response to a fault or power failure. In this project, monitoring system for UPS was designed by using visual basic (VB) to provide a safe and constant 12V DC supply in the case of power disruption. The main power supply, 240V AC was converted to 12V DC as output voltage and a battery will be used as part of the backup system. This system will be able to control the source of power which offers power from LIVE line or power from BATTERY line. The main output voltage was 12V DC and the battery level will be monitored using GUI software created using VB.

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A line-interactive UPS system implementation with series-parallel active power-line conditioning for three-phase, four-wire systems

Abstract: Keywords: Active Filter; UPS; Harmonics.

Cited by 23 publications

References 9 publications

Non-linear optimal controller for unified power quality conditioners

Non-linear optimal controller for unified power quality conditioners

A four-leg unified series–parallel active filter system for periodic and non-periodic disturbance compensation

Monitoring System for Uninterruptible Power Supply

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