Abstract
This paper presents a new LCL-filters optimized designing method for grid connected voltage source converter. This method is based on the analysis of converter output voltage components and inherent relations among LCL-filter parameters. By introducing an optimizingb index of equivalent total capacity of all filter components, with clear physical meaning of minimum cost and volume, a set of optimal values of attenuation ratio and inductancesplit- ratio is obtained for deciding all LCL-filter parameters. With this method, filter overall capacity can be minimized while the grid limit of switching frequency distortion is fulfilled. Compared to the existing methods, the proposed method contains only four steps without try-and-error process, so it is efficient and easy to implement. Simulation results of a 50kVA grid-connected inverter with two sets of LCL-filter parameters under different optimizing condition are presented to verify the reasonability and feasibility of the method.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010 |
| Number of pages | 4 |
| Publisher | IEEE Press |
| Publication date | Jun 2010 |
| Pages | 802-805 |
| ISBN (Print) | 978-1-4244-5669-7 |
| DOIs | |
| Publication status | Published - Jun 2010 |
| Event | 2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010 - Hefei, China Duration: 16 Jun 2010 → 18 Jun 2010 |
Conference
| Conference | 2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010 |
|---|---|
| Country/Territory | China |
| City | Hefei |
| Period | 16/06/2010 → 18/06/2010 |
Keywords
- Grid connected inverter
- LCL-filter
- Optimized design
- Voltage source converter