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Abstract
The series LC-filtered active damper can be used for stabilizing a grid converter tied to the non-ideal grid. Its operation principle is to mimic a damping resistance at the resonance frequencies appearing in the grid. However, the selection of the damping resistance has not been fully analyzed in the literature. Its effect with parasitic capacitance present in the grid has also usually been ignored, even though it may bring new challenges to the active damper. To address these issues, passivity is applied to study the grid converter stability before the understanding gained is used for formulating a damping resistance selection method. The method formulated can further be improved by admittance shaping so that system stability can always be ensured even when considering grid parasitic capacitance and control imperfection. Experimental results obtained have verified the expectations, and hence the suitability of the presented methods for the series LC-filtered active damper.
Original language | English |
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Journal | I E E E Transactions on Industrial Electronics |
Volume | 64 |
Issue number | 1 |
Pages (from-to) | 369 - 379 |
Number of pages | 11 |
ISSN | 0278-0046 |
DOIs | |
Publication status | Published - Jan 2017 |
Keywords
- Admittance shaping
- Active damper
- Grid-tied converter
- Passivity, stability
- Damping resistance
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Dive into the research topics of 'Passivity Enhancement of Grid-Tied Converters by Series LC-Filtered Active Damper'. 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