TY - GEN
T1 - A Generalized Current Balancing Control for Series-Capacitor Buck Converter with Interleaved Phase Angle
AU - Li, Chung Yi
AU - Nien, Chin Fu
AU - Lin, Li
AU - Chen, Hung Chi
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In addition to increasing the output current, an interleaved buck converter can significantly reduce the current ripple at the output. However, the bottleneck of the interleaved buck converter application is the unbalanced inductor current. In order to achieve the current balance in the entire section of the duty cycle, this paper proposes a control architecture with interleaved alignment, using the adjustment of the duty cycle and phase offset, to analyze and realize a high output current and current balanced in three-arm series capacitor interleaved buck converters (SCIBCs) in this work. By analyzing and modeling the SCIBC and using a single-loop control architecture that feedbacks the output voltage, the proposed current-balancing method balances all inductors' current within the full duty cycle without any current sensor. In addition, the small-signal transfer function of the control signal to the output voltage and design of the controller parameters are derived according to the specification, and the SCIBC with the proposed current-balancing control with PI controller of the alignment of interleaved phase angle is constructed. The high output current and current-balancing characteristics of the proposed circuit control architecture are validated in the simulation tool SIMPLIS.
AB - In addition to increasing the output current, an interleaved buck converter can significantly reduce the current ripple at the output. However, the bottleneck of the interleaved buck converter application is the unbalanced inductor current. In order to achieve the current balance in the entire section of the duty cycle, this paper proposes a control architecture with interleaved alignment, using the adjustment of the duty cycle and phase offset, to analyze and realize a high output current and current balanced in three-arm series capacitor interleaved buck converters (SCIBCs) in this work. By analyzing and modeling the SCIBC and using a single-loop control architecture that feedbacks the output voltage, the proposed current-balancing method balances all inductors' current within the full duty cycle without any current sensor. In addition, the small-signal transfer function of the control signal to the output voltage and design of the controller parameters are derived according to the specification, and the SCIBC with the proposed current-balancing control with PI controller of the alignment of interleaved phase angle is constructed. The high output current and current-balancing characteristics of the proposed circuit control architecture are validated in the simulation tool SIMPLIS.
KW - Current balancing
KW - Interleaved phase angle
KW - Series capacitor interleaved buck converters
UR - http://www.scopus.com/inward/record.url?scp=85171459607&partnerID=8YFLogxK
U2 - 10.1109/COMPEL52896.2023.10221016
DO - 10.1109/COMPEL52896.2023.10221016
M3 - Conference contribution
AN - SCOPUS:85171459607
T3 - 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023
BT - 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023
Y2 - 25 June 2023 through 28 June 2023
ER -