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Control of Parallel Converters for Load Sharing with Seamless Transfer between Grid Connected and Islanded Modes

Majumder, Ritwik, Ghosh, Arindam, Ledwich, Gerard F., & Zare, Firuz (2008) Control of Parallel Converters for Load Sharing with Seamless Transfer between Grid Connected and Islanded Modes. In IEEE Power Engineering Society General Meeting 2008, 20 -24 July, Pittsburgh, USA.

Abstract

This paper describes control methods for proper load sharing between parallel converters connected to microgrid supplied by distributed generators. The model of the microgrid power system is simulated in PSCAD. It is assumed that the microgrid supplies a load in both in grid connected and islanded modes. Both passive loads and inertial loads are considered. A control strategy is proposed to improve the system performance through seamless transfer between islanded and grid connected modes. The controller is capable of handling constant impedance, as well as motor loads. The smooth transition between the grid connected and off grid mode is achieved by changing the control mode from voltage control in islanded mode to state feedback control in grid connected mode. Its efficacy has been validated through simulation for various operating conditions.

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ID Code: 14216
Item Type: Conference Paper
Additional URLs:
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)
Divisions: Current > Research Centres > ARC Centre of Excellence for Creative Industries and Innovation
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Institute for Creative Industries and Innovation
Copyright Owner: Copyright 2008 IEEE
Copyright Statement: Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Deposited On: 30 Jul 2008
Last Modified: 29 Feb 2012 23:44

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