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.

Fast DC-Bias Current Control of Dual Active Bridge Converters With Feedforward Compensation

2020 ◽  
Vol 67 (11) ◽  
pp. 2587-2591
Author(s):  
Zhendong Ji ◽  
Qiantong Wang ◽  
Dongye Li ◽  
Yichao Sun
Keyword(s):  
Bias Current ◽  
Current Control ◽  
Dual Active Bridge ◽  
Dc Bias

scholarly journals Optimal Strategy of Triple Phase Shift Transient DC Bias for Dual Active Bridge DC-DC Converter

2020 ◽  
Vol 185 ◽  
pp. 01088
Author(s):  
Jingyu Zhai ◽  
Fusheng Wang ◽  
Lizhong Ye ◽  
Rui Li
Keyword(s):  
Phase Shift ◽  
Optimal Strategy ◽  
Transition Process ◽  
Stable Operation ◽  
Current Stress ◽  
Dual Active Bridge ◽  
Shift Control ◽  
Bias Model ◽  
Dc Bias ◽  
Simulation Results

Under the traditional phase shift control, dual active bridge DC-DC converter (DAB) has a transient bias on the inductance current when the phase shift ratio changes suddenly, which leads to increase in the current stress of switch tubes and even unidirectional saturation of the transformer. All those will affect the stable operation of the converter. This paper focuses on quantifying the transient DC bias model on the control of triple phase shift when phase shift ratios change, and then the strategy proposed by the paper can eliminate the DC bias within one switching period and reduce current stress and response time by adjusting the drive signal during the transient transition process. Finally, the proposed strategy is verified by simulation results from Matlab/Simulink software.

DC-bias cancellation for phase shift controlled dual active bridge

2013 ◽  
Author(s):  
Rafael Pena-Alzola ◽  
Laszlo Mathe ◽  
Marco Liserre ◽  
Frede Blaabjerg ◽  
Tamas Kerekes
Keyword(s):  
Phase Shift ◽  
Dual Active Bridge ◽  
Dc Bias

An Improved DC Bias Elimination Strategy with Extended Phase Shift Control for Dual-Active-Bridge DC-DC

2019 ◽  
Author(s):  
Zhao Zhang ◽  
Jiazheng Sun ◽  
Panfeng Wang ◽  
Zhiyang Cai ◽  
Jianhong Kong ◽  
...  
Keyword(s):  
Phase Shift ◽  
Extended Phase ◽  
Dual Active Bridge ◽  
Shift Control ◽  
Dc Bias
Sign in / Sign up

Export Citation Format

Share Document