Abstract
Renewable energy sources are fluctuating depending on the availability of the energy source. For this reason, energy storage is becoming more important and bidirectional fuel cells represent an attractive technology. Fuel cells require highcurrent low-voltage dc-dc or dc-ac converters as power interface to the grid. In power electronics, the converter efficiency is characterized at fixed operating voltage for various output power. This type of characterization is not suitable for fuel cells, since as the power from the fuel cell increases, the cell voltage decreases. This paper analyses how the fuel cell I-V characteristics influences the power electronics converter efficiency and their consequence on the overall system. A loaddependent efficiency curve is presented based on experimental results from a 6 kW dc-dc converter prototype including the most suitable control strategy which maximizes the dc-dc conversion efficiency.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 2013 4th IEEE PES Innovative Smart Grid Technologies Europe |
| Number of pages | 5 |
| Publisher | IEEE |
| Publication date | 2013 |
| ISBN (Print) | 978-1-4799-2984-9 |
| Publication status | Published - 2013 |
| Event | 2013 4th IEEE PES Innovative Smart Grid Technologies Europe - Technical University of Denmark (DTU), Lyngby, Denmark Duration: 6 Oct 2013 → 9 Oct 2013 Conference number: 4 http://www.ieee-isgt-2013.eu/ |
Conference
| Conference | 2013 4th IEEE PES Innovative Smart Grid Technologies Europe |
|---|---|
| Number | 4 |
| Location | Technical University of Denmark (DTU) |
| Country/Territory | Denmark |
| City | Lyngby |
| Period | 06/10/2013 → 09/10/2013 |
| Internet address |
Keywords
- Fuel cells
- Energy storage
- Smart grids
- Dc-dc power converters
- Energy efficiency
