Abstract
Harmonic current filtering and resonance damping have become important concerns on the control of an islanded microgrids. To address these challenges, this paper proposes a control method of inverter-interfaced Distributed Generation (DG) units, which can autonomously share harmonic currents and resonance damping burdens. The approach employs a load compensator based on the decomposition of output current, in addition to the outer droop-based power controller, as well as inner voltage and current controllers. The load compensator consists of a virtual fundamental impedance loop for enhanced sharing of reactive power, and a variable harmonic impedance loop which allows to counteract harmonic voltage drops across the grid-side inductance of the DG inverter, and to damp the harmonic resonance propagation throughout a distribution feeder. Experiments on a three-phase microgrid are performed to validate the performance of the proposed control scheme.
Original language | English |
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Title of host publication | Proceedings of the IEEE Energy Conversion Congress and Exposition 2012 |
Publisher | IEEE Press |
Publication date | 2012 |
Pages | 211-218 |
ISBN (Print) | 978-1-4673-0802-1 |
ISBN (Electronic) | 978-1-4673-0801-4 |
DOIs | |
Publication status | Published - 2012 |
Event | the Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh Convention Center, Raleigh, United States Duration: 15 Sept 2012 → 20 Sept 2012 |
Conference
Conference | the Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012 |
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Location | Raleigh Convention Center |
Country/Territory | United States |
City | Raleigh |
Period | 15/09/2012 → 20/09/2012 |