TY - GEN
T1 - Common-Mode Current Reduction of Paralleled Dual Converters for Bipolar DC Distribution
AU - Li, Bowei
AU - Ding, Li
AU - Wu, Xuesong
AU - Kish, Gregory
AU - Li, Yunwei
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Asymmetrical operation is a main challenge for the application of bipolar dc distribution systems. As a promising solution, paralleled dual converters balance the dc pole voltages without the penalties of increased power ratings by integrating a center-tapped transformer. The interleaving operation of dual converters could realize the harmonics cancellation of neutral line current, which is elaborated by harmonics distribution analysis presented in this paper. Moreover, phase shifting strategy is used to offer an additional degree-of-freedom (DoF), the resultant 2DoF modulation strategy is able to significantly suppress the common-mode (CM) current, which could reduce the size of CM choke and improve power density of converter. The validity and benefit of 2DoF strategy for dual converters are verified by both simulation and experimental results.
AB - Asymmetrical operation is a main challenge for the application of bipolar dc distribution systems. As a promising solution, paralleled dual converters balance the dc pole voltages without the penalties of increased power ratings by integrating a center-tapped transformer. The interleaving operation of dual converters could realize the harmonics cancellation of neutral line current, which is elaborated by harmonics distribution analysis presented in this paper. Moreover, phase shifting strategy is used to offer an additional degree-of-freedom (DoF), the resultant 2DoF modulation strategy is able to significantly suppress the common-mode (CM) current, which could reduce the size of CM choke and improve power density of converter. The validity and benefit of 2DoF strategy for dual converters are verified by both simulation and experimental results.
KW - asymmetrical operation
KW - bipolar dc distribution
KW - common-mode current
KW - harmonics distribution
UR - https://www.scopus.com/pages/publications/85162209462
U2 - 10.1109/APEC43580.2023.10131507
DO - 10.1109/APEC43580.2023.10131507
M3 - 会议稿件
AN - SCOPUS:85162209462
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 543
EP - 549
BT - APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023
Y2 - 19 March 2023 through 23 March 2023
ER -