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Single stage dual active bridge AC-DC converter with active power decoupling

Gottardo, Davide; De Lillo, Liliana; Empringham, Lee; Costabeber, Alessandro; Chen, Linglin


Davide Gottardo

Professor of Power Conversion Technologies

Alessandro Costabeber

Linglin Chen


The paper introduces a new a isolated DC-AC DAB converter topology, capable of active power decoupling on the AC side of the transformer, made up of two full bridges with no additional active component. The differential voltage modulated by the DC-side full bridge is used to control the voltage applied to the primary winding of a high-frequency transformer, while the common mode voltage generated by the AC-side full bridge is applied to the secondary windings. The choice of applying the common mode voltage ripple of the AC-side full bridge to the transformer, allows to have the required ripple voltage to transfer the power, while keeping the differential voltage ripple, that is applied to the AC output, at its minimum value, making possible the use of a small AC filter inductor. A control strategy is proposed and validated by simulation. This work is being developed at University of Notting-ham within the framework of project SENSIBLE.


Gottardo, D., De Lillo, L., Empringham, L., Costabeber, A., & Chen, L. (2018). Single stage dual active bridge AC-DC converter with active power decoupling. doi:10.1109/SPEEDAM.2018.8445410

Conference Name 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)
Start Date Jun 20, 2018
End Date Jun 22, 2018
Acceptance Date Mar 1, 2018
Online Publication Date Aug 27, 2018
Publication Date Jun 20, 2018
Deposit Date Nov 26, 2018
Publicly Available Date Nov 27, 2018
Publisher Institute of Electrical and Electronics Engineers
Keywords Active power decoupling; Single-phase system; Dual active bridge; DAB; AC-DC DAB
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Single Stage Dual Active Bridge AC-DC Converter With Active Power Decoupling (1.6 Mb)

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