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69010

Droop Control for Parallel-Connected Three-Phase UPS Units with Different Ratings

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Last updated: 04 Jan 2025

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Abstract

The main objective of this paper is to achieve synchronization and power sharing between different ratings three-phase Uninterruptible power supply (UPS) units. A droop control scheme is presented in such a way that a discrete PI-controller is applied. The PI-controller produces a suitable control signal to sinusoidal pulse width modulation (SPWM) circuit. The SPWM produces suitable trigger pulses to the inverter gate. The validity of the proposed control scheme is illustrated through MATLAB simulation with two different ratings three-phase UPS units. The simulation results prove that it possible to share the total load among the different rating units in proportion with their rated values in the presence of load interruption.

DOI

10.21608/mjeer.2020.69010

Keywords

Uninterruptible Power Supply (UPS), Parallel Operation, Power Sharing, Droop Control, Discrete PI-Controller, Sinusoidal Pulse Width Modulation (SPWM)

Authors

First Name

Mohamed M.

Last Name

Ramadan

MiddleName

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Affiliation

Department of Industrial Electronics and Control Eng., Faculty of Electronic Eng., Menoufia University, Egypt

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First Name

Prof. Magdy A.

Last Name

Koutb

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Affiliation

Department of Industrial Electronics and Control Eng., Faculty of Electronic Eng., Menoufia University, Egypt

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Volume

29

Article Issue

1

Related Issue

9963

Issue Date

2020-01-01

Receive Date

2020-01-23

Publish Date

2020-01-01

Page Start

13

Page End

20

Print ISSN

1687-1189

Online ISSN

2682-3535

Article File

MJEER_Volume 29_Issue 1_Pages 13-20.pdf

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Link

https://mjeer.journals.ekb.eg/article_69010.html

Detail API

https://mjeer.journals.ekb.eg/service?article_code=69010

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Original Article

Type Code

1,088

Publication Type

Journal

Publication Title

Menoufia Journal of Electronic Engineering Research

Publication Link

https://mjeer.journals.ekb.eg/

MainTitle

Droop Control for Parallel-Connected Three-Phase UPS Units with Different Ratings

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Article

Created At

22 Jan 2023