Device loss comparison of GaN device based LLC, dual active bridge and phase shift quasi switched capacitor circuit

2016 ◽  
Author(s):  
Boxue Hu ◽  
Xuan Zhang ◽  
Lixing Fu ◽  
He Li ◽  
Yousef M. Abdullah ◽  
...  
Keyword(s):  
Phase Shift ◽  
Switched Capacitor ◽  
Dual Active Bridge

scholarly journals A Dual Rising Edge Shift Algorithm for Eliminating the Transient DC-Bias Current in Transformer for a Dual Active Bridge Converter

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4264
Author(s):  
Michal Gierczynski ◽  
Lech M. Grzesiak ◽  
Arkadiusz Kaszewski
Keyword(s):  
Phase Shift ◽  
Power Flow ◽  
Bias Current ◽  
Compensation Algorithm ◽  
Dual Active Bridge ◽  
Simple Implementation ◽  
Dc Bias ◽  
Fast Settling ◽  
Parameter Values ◽  
Laboratory Prototype

This paper deals with a well-known problem of the transient DC-bias current occurring during a phase shift transition in dual active bridge (DAB) DC/DC converters. This phenomenon, if not compensated, can cause damage to the converter or deteriorate its performance. One aim of this paper is to present a solution which allows for the elimination of the undesired transient DC-bias component in current waveforms. This solution is the dual rising edge shift (DRES) compensation algorithm. It provides a very simple implementation and fast settling time within the first half of a switching period. Moreover, the solution is independent on any measurements or system parameter values. It is based on the double-sided single phase shift (DSSPS) modulation, which is described in detail along with a converter model in steady-state. Then, the mechanisms leading to the transient DC-bias are explained, and the compensation algorithm is derived. The performance of the algorithm has been tested using a laboratory prototype. A comprehensive set of tests, involving rapid step changes in power flow and frequency sweep, are provided. Finally, the features of the proposed algorithm are briefly discussed.

Minimum-Reactive-Power Scheme of Dual-Active-Bridge DC–DC Converter With Three-Level Modulated Phase-Shift Control

2017 ◽  
Vol 53 (6) ◽  
pp. 5573-5586 ◽  
Author(s):  
Haochen Shi ◽  
Huiqing Wen ◽  
Jie Chen ◽  
Yihua Hu ◽  
Lin Jiang ◽  
...  
Keyword(s):  
Phase Shift ◽  
Reactive Power ◽  
Dual Active Bridge ◽  
Shift Control ◽  
Modulated Phase
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