Conference paper
Analysis of DC/DC Converter Efficiency for Energy Storage System Based on Bidirectional Fuel Cells
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2013 |
| Pages: | 1-5 |
| Proceedings: | 2013 4th IEEE PES Innovative Smart Grid Technologies Europe |
| ISBN: | 1479929840 , 1479929859 , 9781479929849 and 9781479929856 |
| Types: | Conference paper |
| DOI: | 10.1109/ISGTEurope.2013.6695344 |
| ORCIDs: | Zhang, Zhe and Andersen, Michael A. E. |
Dc-dc power converters Energy efficiency Energy storage Fuel cells SDG 7 - Affordable and Clean Energy Smart grids
DC-AC power convertors DC-DC power convertors Load flow Low voltage Mathematical model Power electronics Prototypes bidirectional fuel cell dc-ac converter energy storage system fuel cells high-current low-voltage dc-dc converter power 6 kW power electronics converter efficiency power grid power grids power interface renewable energy source renewable energy sources
