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Abstract
Paralleled grid-connected inverters with LCL-filters are coupled through the non-negligible grid impedance. However, the coupling effects among inverters and grid are usually ignored during the design, which may lead to unexpected system resonance and even instability. This paper thus investigates the resonance characteristic and stability analysis in multi-paralleled grid-connected inverters with LCL-filters. An intuitive analytical method based on equivalent grid impedance has been proposed. The analysis clearly describes the open loop resonance characteristic and provides a relatively easy method to define the stable region of multi-inverters system. Experimental results are provided for verifying the theoretical analysis.
Original language | English |
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Title of host publication | Proceedings of the IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2015 |
Number of pages | 6 |
Publisher | IEEE Press |
Publication date | Jun 2015 |
Pages | 1-6 |
DOIs | |
Publication status | Published - Jun 2015 |
Event | IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2015 - Pullman Aachen Quellenhof hotel, Aachen, Germany Duration: 22 Sept 2015 → 25 Sept 2015 |
Conference
Conference | IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2015 |
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Location | Pullman Aachen Quellenhof hotel |
Country/Territory | Germany |
City | Aachen |
Period | 22/09/2015 → 25/09/2015 |
Keywords
- Paralleled voltage source converters
- Resonance Analysis
- Stability issue
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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