Abstract
This paper presents an improved full-bridge three-level (IFBTL) dc/dc converter for a wind turbine in a dc grid by inserting a passive filter into the dc/dc converter to improve the performance of the converter. The passive filter can effectively reduce the voltage stress of the medium frequency transformer in the IFBTL dc/dc converter. A modulation strategy, including two operation modes, is proposed for the IFBTL dc/dc converter. Then, a voltage balancing control strategy is proposed for the IFBTL dc/dc converter. Furthermore, the control of the wind turbine based on the IFBTL dc/dc converter in a dc-grid system is presented. Finally, a small-scale IFBTL dc/dc converter prototype was built and tested in the laboratory, and the results verify the theoretical analysis.
| Original language | English |
|---|---|
| Journal | I E E E Transactions on Power Electronics |
| Volume | 28 |
| Issue number | 1 |
| Pages (from-to) | 314-324 |
| Number of pages | 11 |
| ISSN | 0885-8993 |
| DOIs | |
| Publication status | Published - Jan 2013 |
Keywords
- DC/DC Converter
- DC grid
- full-bridge three-level
- Wind Turbines