Energy Feed-Forward and Direct Feed-Forward Control for Solid-State Transformer
- 22 December 2014
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 30 (8), 4042-4047
- https://doi.org/10.1109/tpel.2014.2382613
Abstract
There is large voltage deviation on the dc bus of the three-stage solid-state transformer (SST) when the load suddenly changes. The feed-forward control can effectively reduce the voltage deviation and transition time. However, conventional power feed-forward scheme of SST cannot develop the feed-forward control to the full without extra current sensor. In this letter, an energy feed-forward scheme, which takes the energy changes of inductors into consideration, is proposed for the dual active bridge (DAB) controller. A direct feed-forward scheme, which directly passes the power of DAB converter to the rectifier stage, is proposed for the rectifier controller. They can further improve the dynamic performances of the two dc bus voltages, respectively. The experimental results in a 2-kW SST prototype are provided to verify the proposed feed-forward schemes and show the superior performances.Keywords
This publication has 9 references indexed in Scilit:
- Solid-state transformer stability and control considerationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- Current Sensorless Power Balance Strategy for DC/DC Converters in a Cascaded Multilevel Converter Based Solid State TransformerIEEE Transactions on Power Electronics, 2013
- Control of a three-stage three-phase cascaded modular power electronic transformerPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2013
- Voltage and Power Balance Control for a Cascaded H-Bridge Converter-Based Solid-State TransformerIEEE Transactions on Power Electronics, 2012
- An overview of Power Electronic Transformer: Control strategies and topologiesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2012
- 3-D Space Modulation With Voltage Balancing Capability for a Cascaded Seven-Level Converter in a Solid-State TransformerIEEE Transactions on Power Electronics, 2011
- Research on voltage and power balance control for cascaded modular solid-state transformerIEEE Transactions on Power Electronics, 2011
- Energy-based control design for a solid state transformerPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2010
- Power electronic transformers for utility applicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002