TY - JOUR
T1 - Analysis of DC Fault for Dual Active Bridge DC/DC Converter including Prototype Verification
AU - Rahman, M. I.
AU - Ahmed, K. H.
AU - Jovcic, D.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - This paper presents DC fault analysis for a dual active bridge DC/DC converter which comprises of two active bridges and an internal medium frequency transformer. This topology provides galvanic isolation, voltage step up/down and bidirectional power transfer. The DC fault study assumes the DC terminal voltage of the converter is at zero. The steady state fault current is limited to a low magnitude which is less than the rated value without any controller action depending on the design of the converter. The DC faults current magnitudes are analyzed with AC equivalent circuit where only the fundamental component of the AC voltages and inductor current are considered. Phase shift and AC voltage magnitude modulation control methods are selected. A detailed dual active bridge DC/DC converter 3 MW, 4/40 kV based system is simulated using MATLAB/Simulink to validate the proposed analytical study. Further, hardware testing is conducted to confirm the DC fault studies with a 500 W 24/100 V prototype.
AB - This paper presents DC fault analysis for a dual active bridge DC/DC converter which comprises of two active bridges and an internal medium frequency transformer. This topology provides galvanic isolation, voltage step up/down and bidirectional power transfer. The DC fault study assumes the DC terminal voltage of the converter is at zero. The steady state fault current is limited to a low magnitude which is less than the rated value without any controller action depending on the design of the converter. The DC faults current magnitudes are analyzed with AC equivalent circuit where only the fundamental component of the AC voltages and inductor current are considered. Phase shift and AC voltage magnitude modulation control methods are selected. A detailed dual active bridge DC/DC converter 3 MW, 4/40 kV based system is simulated using MATLAB/Simulink to validate the proposed analytical study. Further, hardware testing is conducted to confirm the DC fault studies with a 500 W 24/100 V prototype.
KW - DC terminal fault
KW - dual-active bridge (DAB)
KW - high-power applicatioin
KW - high-power application
UR - http://www.scopus.com/inward/record.url?scp=85050178775&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/analysis-dc-fault-dualactive-bridge-dcdc-converter-including-prototype-verification
U2 - 10.1109/JESTPE.2018.2856759
DO - 10.1109/JESTPE.2018.2856759
M3 - Article
SN - 2168-6777
VL - 7
SP - 1107
EP - 1115
JO - IEEE Journal of Emerging and Selected Topics in Power Electronics
JF - IEEE Journal of Emerging and Selected Topics in Power Electronics
IS - 2
ER -