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Abstract
The output impedance of a power converter plays an important role in the stability assessment of the converter. The impedance can be expressed in different frames such as the stationary frame (phase domain) or in the synchronous frame (dq domain). To treat the three-phase system like a single-phase system, the system can be divided into positive and negative sequences in the phase domain. This paper demonstrates that there exist couplings between the positive and negative sequences, even in a balanced system due to the PLL, which is important for synchronization. Further it will be shown that even though these couplings are very small in magnitude, they are important in the stability of the converter.
Original language | English |
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Journal | I E E E Transactions on Power Electronics |
Volume | 31 |
Issue number | 10 |
Pages (from-to) | 6792 - 6796 |
Number of pages | 5 |
ISSN | 0885-8993 |
DOIs | |
Publication status | Published - Oct 2016 |
Keywords
- Grid-connected inverters
- Harmonic stability
- Impedance modeling
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Dive into the research topics of 'Couplings in Phase Domain Impedance Modelling of Grid-Connected Converters'. 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