TY - JOUR
T1 - Highly-Efficient and Cost-Effective Ripple-Free Resonant NPC DC-DC Converter
AU - Wagaye, Tsegaab Alemayehu
AU - Jung, Hyun Sam
AU - Kim, Minsung
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2023/8/1
Y1 - 2023/8/1
N2 - This article presents highly-efficient and inexpensive ripple-free resonant neutral-point-clamped (NPC) dc-dc converter that does not use extra inductors. By using the push-pull transformer itself, with the primary-side switching modulation fixed at 0.5, the proposed converter accomplishes theoretically zero input current ripple. Because of the resonant NPC cell, the circuit does not experience instantaneous reactive current flow regardless of wide input voltage variation. The resonant NPC structure much reduces the voltage stress at the turn-off instant; this aspect enables use of inexpensive low-voltage-rated active power components. Therefore, the proposed converter is inexpensive, highly efficient, and has high power density. A 1-kW experimental prototype was implemented and it was tested to validate the superior properties of the proposed converter.
AB - This article presents highly-efficient and inexpensive ripple-free resonant neutral-point-clamped (NPC) dc-dc converter that does not use extra inductors. By using the push-pull transformer itself, with the primary-side switching modulation fixed at 0.5, the proposed converter accomplishes theoretically zero input current ripple. Because of the resonant NPC cell, the circuit does not experience instantaneous reactive current flow regardless of wide input voltage variation. The resonant NPC structure much reduces the voltage stress at the turn-off instant; this aspect enables use of inexpensive low-voltage-rated active power components. Therefore, the proposed converter is inexpensive, highly efficient, and has high power density. A 1-kW experimental prototype was implemented and it was tested to validate the superior properties of the proposed converter.
KW - Instantaneous reactive current
KW - low cost
KW - push-pull transformer
KW - reduced voltage stress
KW - zero input current ripple
UR - http://www.scopus.com/inward/record.url?scp=85139841440&partnerID=8YFLogxK
U2 - 10.1109/TIE.2022.3212396
DO - 10.1109/TIE.2022.3212396
M3 - Article
AN - SCOPUS:85139841440
SN - 0278-0046
VL - 70
SP - 8087
EP - 8097
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 8
ER -