Abstract
The grid-connected photovoltaic (PV) systems are an important part of renewable energy sources and their integration is getting more and more widespread. In order to improve the efficiency, practicality and reliability of the PV systems, many kinds of new inverter topologies have been proposed to avoid using a grid isolation transformer. The NPC topology and two other derived topologies are presented and analyzed in this paper. Validated by experiments, it has been proven that they are very suitable for using in transformer-less PV applications due to high efficiency, low leakage current and EMI. Simulations using Simulink and the PLECS toolbox have been done for evaluating efficiency of different NPC topologies and some experimental results are presented in this paper to validate the operation of the different topologies.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the European Conference on ower Electronics and Applications, 2009. EPE '09. |
| Number of pages | 10 |
| Publisher | IEEE |
| Publication date | 2009 |
| Pages | 1-10 |
| ISBN (Print) | 978-1-4244-4432-8 |
| Publication status | Published - 2009 |
| Event | European Conference on Power Electronics and Applications, EPE 2009 - Barcelona, Spain Duration: 8 Sept 2009 → 10 Sept 2009 Conference number: 13 |
Conference
| Conference | European Conference on Power Electronics and Applications, EPE 2009 |
|---|---|
| Number | 13 |
| Country/Territory | Spain |
| City | Barcelona |
| Period | 08/09/2009 → 10/09/2009 |
Keywords
- Photovoltaic
- Multilevel converters
- Efficiency