A DC–DC Quad Active Bridge Converter Based Hybrid Energy Storage Systems

	International Journal of P2P Network Trends and Technology (IJPTT)
	© 2014 by IJPTT Journal
	Volume - 4 Issue - 1
	Year of Publication : 2014
	Authors : M.G.Anand , R.Poomalai Prakash

Citation

M.G.Anand , R.Poomalai Prakash."A DC–DC Quad Active Bridge Converter Based Hybrid Energy Storage Systems". International Journal of P2P Network Trends and Technology (IJPTT), V4(1):24-28 Jan - Feb 2014, ISSN:2249-2615, www.ijpttjournal.org. Published by Seventh Sense Research Group.

Abstract

The Solid-state transformer (SST) has been proposed in this paper to replace the regular distribution transformer in the future smart grid. The SST provides ports for the integration of storage and distributed generation. This paper proposes a SST topology based on a quad-active-bridge (QAB) converter which not only provides isolation for the load, but also for DG and storage. A gyrator-based average model is developed for a general multi active-bridge (MAB) converter, and expressions to determine the power rating of the MAB ports are derived. These results are then applied to analyze the QAB converter. For the control of the dc–dc stage of the proposed QAB-based SST integrating PV and battery, a technique that accounts for the cross-coupling characteristics of the QAB converter in order to improve the regulation of the high-voltage-dc link is introduced. This is done by transferring the disturbances onto the battery. The control loops are designed using single-input single-output techniques with different bandwidths. The dynamic performance of the control strategy is verified through extensive simulation results by MATLAB/SIMULINK Environment.

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Keywords

Solid State Transformer, Quad active bridge, Multi active bridge, MATLAB, solar panel.