Published in
2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
DOI: 10.1109/apec.2013.6520441
Institute of Electrical and Electronics Engineers, IEEE Transactions on Power Electronics, 7(29), p. 3318-3329, 2014
DOI: 10.1109/tpel.2013.2278716
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- Institute of Electrical and Electronics Engineers
- Institute of Electrical and Electronics Engineers
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- [vbn.aau.dk] | PDF
- [www.researchgate.net] | PDF
- [vbn.aau.dk] | PDF
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An active damper for stabilizing power-electronics-based AC systems
,
Frede Blaabjerg,
Marco Liserre,
Zhe Chen,
Jinwei He,
Yunwei Li
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Abstract
The mutual interactions in the parallel gridconnected converters coupled through the grid impedance tend to result in a number of stability and power quality problems. To address them, this paper proposes an active damper based on a power converter with the high control bandwidth. The general idea behind this proposal is to dynamically reshape the grid impedance profile seen from the point of common coupling of the converters, such that the potential oscillations and resonance propagation in the parallel grid-connected converters can be mitigated. Further, to validate the effectiveness of the active damper, simulations and experimental tests on a three-converter based setup are carried out. The results show that the active damper can become a promising way to stabilize the power electronics based AC power systems.