| |
Wide input Voltage range Compensation in DC/DC Resonant Architecture for On-Board Traction Power Supplies
| [View]
[Download]
|
| Author(s) |
A. Coccia; F. Canales; P. Barbosa; S. Ponnaluri |
| Abstract |
Several methods to reduce the effect of wide input voltage variation in soft-switched
DC/DC converters for high-power and high-voltage traction applications are presented in this paper. To
enhance high conversion efficiency together with high reliability and cost reduction, the document
addresses the use of a power architecture whose front-end is a three-level half-bridge converter non
standard NPC configuration. Thanks to a structured control methodology based on the possibility to use
either a two-level or a three-level modulation strategy according to the input voltage level, it is possible to
optimize the converter performance over the whole input voltage range.
First, the soft-switching implementation of the converter which allows ZVS operation in the entire load
range by using the magnetizing inductance of the transformer is discussed. Then, the operation of the
converter at both two-level and three-level operation is addressed. Concluding, experimental results
obtained in the specified input voltage range are presented to confirm the validity of the theoretical
analysis. |
| Download |
| Filename: | Unnamed file |
| Filesize: | 658.2 KB |
|
| Type |
Members Only |
| Date |
Last modified 2008-01-17 by System |
| |
 |