Abstract
This paper presents an experimental discussion on a 6-kW, full-bridge, zero-voltage switching bidirectional isolated dc/dc converter for a 53.2-V, 2-kWh Li-ion battery energy storage system. The combination of high-frequency switching devices, 600-V/200-A IGBTs and 100-V/500-A MOSFETs with a high-frequency transformer reduces the weight and physical size of the bidirectional isolated dc/dc converter. The dc voltage on the high-voltage side of the converter is controlled in a range of 300V to 355V as the battery voltage on the low-voltage side varies from 50V to 59V. Experimental verification of bidirectional power flow into (battery charging) or out of (battery discharging) the Li-ion battery bank is also presented. The maximal efficiency of the dc/dc converter is measured to be 98.1% during charging and 98.2% during discharging, excluding the gate drive loss and control circuit loss.
| Original language | English |
|---|---|
| Pages (from-to) | 233-240+14 |
| Journal | IEEJ Transactions on Industry Applications |
| Volume | 132 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
Keywords
- Bidirectional isolated dc/dc converters
- Energy storage systems
- Lithium-ion battery
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering
