A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads

S. M. Dehghan; A. Ale Ahmad; R. Lourakzadegan; M. Fazeli; M. Mohamadian; A. Abrishamifar

doi:10.1109/PEDSTC.2011.5742460

A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads

S. M. Dehghan, A. Ale Ahmad, R. Lourakzadegan, M. Fazeli, M. Mohamadian, A. Abrishamifar

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

9 Citations (Scopus)

Abstract

In this paper, a high performance controller for parallel operation of uninterruptible power supplies (UPS) is proposed. The proposed controller is based on synchronous reference frame that is developed for parallel UPSs. Applying master-slave algorithm in this controller, power sharing and voltage regulation are controlled centrally by master UPS and commands are send through CAN bus to slave UPS. But each UPS performs voltage harmonic compensation locally and independently. Virtual impedance technique is used to share harmonic currents perfectly. Controller also is modified for unbalanced nonlinear loads. The performance of the proposed controller has been verified with simulation results for 20KVA, 380V three-phase parallel UPS.

Original language	English
Title of host publication	2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	433-438
Number of pages	6
ISBN (Electronic)	9781612844213
ISBN (Print)	9781612844220
DOIs	https://doi.org/10.1109/PEDSTC.2011.5742460
Publication status	Published - 5 Apr 2011
Externally published	Yes
Event	2nd Power Electronics, Drive Systems and Technologies Conference - Tehran, Iran, Islamic Republic of Duration: 16 Feb 2011 → 17 Feb 2011 Conference number: 2

Conference

Conference	2nd Power Electronics, Drive Systems and Technologies Conference
Abbreviated title	PEDSTC 2011
Country/Territory	Iran, Islamic Republic of
City	Tehran
Period	16/02/11 → 17/02/11

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Dehghan, S. M., Ale Ahmad, A., Lourakzadegan, R., Fazeli, M., Mohamadian, M., & Abrishamifar, A. (2011). A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads. In 2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011 (pp. 433-438). [5742460] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PEDSTC.2011.5742460

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title = "A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads",

abstract = "In this paper, a high performance controller for parallel operation of uninterruptible power supplies (UPS) is proposed. The proposed controller is based on synchronous reference frame that is developed for parallel UPSs. Applying master-slave algorithm in this controller, power sharing and voltage regulation are controlled centrally by master UPS and commands are send through CAN bus to slave UPS. But each UPS performs voltage harmonic compensation locally and independently. Virtual impedance technique is used to share harmonic currents perfectly. Controller also is modified for unbalanced nonlinear loads. The performance of the proposed controller has been verified with simulation results for 20KVA, 380V three-phase parallel UPS.",

keywords = "Parallel operation, Synchronous reference frame controller (SRFC), Uninterruptible power supplies (UPS)",

author = "Dehghan, {S. M.} and {Ale Ahmad}, A. and R. Lourakzadegan and M. Fazeli and M. Mohamadian and A. Abrishamifar",

year = "2011",

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doi = "10.1109/PEDSTC.2011.5742460",

language = "English",

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note = "2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011 ; Conference date: 16-02-2011 Through 17-02-2011",

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Dehghan, SM, Ale Ahmad, A, Lourakzadegan, R, Fazeli, M, Mohamadian, M & Abrishamifar, A 2011, A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads. in 2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011., 5742460, Institute of Electrical and Electronics Engineers Inc., pp. 433-438, 2nd Power Electronics, Drive Systems and Technologies Conference, Tehran, Iran, Islamic Republic of, 16/02/11. https://doi.org/10.1109/PEDSTC.2011.5742460

A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads. / Dehghan, S. M.; Ale Ahmad, A.; Lourakzadegan, R. et al.

2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011. Institute of Electrical and Electronics Engineers Inc., 2011. p. 433-438 5742460.

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

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AB - In this paper, a high performance controller for parallel operation of uninterruptible power supplies (UPS) is proposed. The proposed controller is based on synchronous reference frame that is developed for parallel UPSs. Applying master-slave algorithm in this controller, power sharing and voltage regulation are controlled centrally by master UPS and commands are send through CAN bus to slave UPS. But each UPS performs voltage harmonic compensation locally and independently. Virtual impedance technique is used to share harmonic currents perfectly. Controller also is modified for unbalanced nonlinear loads. The performance of the proposed controller has been verified with simulation results for 20KVA, 380V three-phase parallel UPS.

KW - Parallel operation

KW - Synchronous reference frame controller (SRFC)

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Dehghan SM, Ale Ahmad A, Lourakzadegan R, Fazeli M, Mohamadian M, Abrishamifar A. A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads. In 2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011. Institute of Electrical and Electronics Engineers Inc. 2011. p. 433-438. 5742460 doi: 10.1109/PEDSTC.2011.5742460

A High Performance Controller for Parallel Operation of three-Phase UPSs Powering Unbalanced and Nonlinear Loads

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