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Abstract
In order to utilize DG unit interfacing converters to actively compensate distribution system harmonics, this paper proposes an enhanced current control approach. It seamlessly integrates system harmonic mitigation capabilities with the primary DG power generation function. As the proposed current controller has two well decoupled control branches to independently control fundamental and harmonic DG currents, phase-locked loops (PLL) and system harmonic component extractions can be avoided during system harmonic compensation. Moreover, a closed-loop power control scheme is also employed to derive the fundamental current reference. The proposed power control scheme effectively eliminates the impacts of steady-state fundamental current tracking errors in the DG units. Thus, an accurate power control is realized even when the harmonic compensation functions are activated. Experimental results from a single-phase DG unit validate the correctness of the proposed methods.
Original language | English |
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Title of host publication | 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 |
Number of pages | 6 |
Publisher | IEEE Press |
Publication date | 2013 |
Pages | 986 - 991 |
ISBN (Print) | 978-1-4673-4354-1 |
ISBN (Electronic) | 978-1-4673-4353-4 |
DOIs | |
Publication status | Published - 2013 |
Event | IEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States Duration: 17 Mar 2013 → 21 Mar 2013 |
Conference
Conference | IEEE Applied Power Electronics Conference and Exposition, APEC 2013 |
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Country/Territory | United States |
City | Long Beach, CA |
Period | 17/03/2013 → 21/03/2013 |
Series | I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings |
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ISSN | 1048-2334 |
Keywords
- Active power filter
- Harmonic detection
- Phase-locked loop
- Distributed generation and Virtual impedance
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Dive into the research topics of 'An improved current control scheme for grid-connected DG unit based distribution system harmonic compensation'. Together they form a unique fingerprint.Projects
- 1 Finished
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HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems
Blaabjerg, F., Bak, C. L., Wang, X., Beres, R. N., Kwon, J., Gui, Y., Yoon, C. & Ebrahimzadeh, E.
01/02/2013 → 28/02/2018
Project: Research