An improved current control scheme for grid-connected DG unit based distribution system harmonic compensation

Jinwei He, Yun Wei Li, Xiongfei Wang, Frede Blaabjerg

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3 Citationer (Scopus)
602 Downloads (Pure)

Abstrakt

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.
OriginalsprogEngelsk
Titel28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Antal sider6
ForlagIEEE Press
Publikationsdato2013
Sider986 - 991
ISBN (Trykt)978-1-4673-4354-1
ISBN (Elektronisk)978-1-4673-4353-4
DOI
StatusUdgivet - 2013
BegivenhedIEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, USA
Varighed: 17 mar. 201321 mar. 2013

Konference

KonferenceIEEE Applied Power Electronics Conference and Exposition, APEC 2013
LandUSA
ByLong Beach, CA
Periode17/03/201321/03/2013
NavnI E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
ISSN1048-2334

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