TY - JOUR
T1 - Capacitor Lifetime Extension of Interleaved DC–DC Converters for Multistring PV Systems
AU - Alcaide, Abraham Marquez
AU - Ko, Youngjong
AU - Andresen, Markus
AU - Leon, Jose I.
AU - Vazquez, Sergio
AU - Monopoli, Vito Giuseppe
AU - Buticchi, Giampaolo
AU - Liserre, Marco
AU - Franquelo, Leopoldo G.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - Interleaved dc–dc converters are being vastly applied for a wide range of applications. Inherent power sharing between the power modules and reduction of the output waveforms ripple are the main advantages of these power systems. However, in some cases, such as the multistring photovoltaic converters, each power module manages different power, leading to an unbalanced operation of the interleaved converters. In this case, the harmonic response of the conventional interleaving operation is degraded. This fact affects directly the expected lifetime of the dc-link capacitor of the power converter, which is one critical components of the system. In this article, a variable-angle phase displacement angle is proposed in order to mitigate this problem, achieving an extension of the converter lifetime.
AB - Interleaved dc–dc converters are being vastly applied for a wide range of applications. Inherent power sharing between the power modules and reduction of the output waveforms ripple are the main advantages of these power systems. However, in some cases, such as the multistring photovoltaic converters, each power module manages different power, leading to an unbalanced operation of the interleaved converters. In this case, the harmonic response of the conventional interleaving operation is degraded. This fact affects directly the expected lifetime of the dc-link capacitor of the power converter, which is one critical components of the system. In this article, a variable-angle phase displacement angle is proposed in order to mitigate this problem, achieving an extension of the converter lifetime.
KW - Harmonic analysis
KW - multilevel converters
KW - pulsewidth modulation
UR - http://www.scopus.com/inward/record.url?scp=85146648964&partnerID=8YFLogxK
U2 - 10.1109/TIE.2022.3187579
DO - 10.1109/TIE.2022.3187579
M3 - Article
AN - SCOPUS:85146648964
SN - 0278-0046
VL - 70
SP - 4854
EP - 4864
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 5
ER -
