TY - GEN
T1 - Systematic Small-Signal Modeling of a Three-Phase Cyclo-Active-Bridge Grid Interface Inverter
AU - Sen, Tanuj
AU - Liao, Mian
AU - Chen, Minjie
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper presents a systematic small-signal modeling method for a cyclo-active-bridge (CAB) inverter, to be used for grid-connected applications. Building upon the first harmonic approximation and correction factor based modeling technique, the effect of parasitic resistances and the dc blocking capacitor on the system dynamics are included in this analysis. Using the resulting small-signal model of the CAB inverter, the system transfer functions necessary for operating the inverter as a grid-forming (GFM) or grid-following (GFL) inverter are developed. Dedicated per-phase controllers are designed for the 3-Φ CAB inverter, which allow for GFM or GFL operation. This operation is experimentally verified to generate 3-Φ ac output at 60Hz. Moreover, various tests are performed which highlight the flexibility of control associated with operation of the CAB inverter.
AB - This paper presents a systematic small-signal modeling method for a cyclo-active-bridge (CAB) inverter, to be used for grid-connected applications. Building upon the first harmonic approximation and correction factor based modeling technique, the effect of parasitic resistances and the dc blocking capacitor on the system dynamics are included in this analysis. Using the resulting small-signal model of the CAB inverter, the system transfer functions necessary for operating the inverter as a grid-forming (GFM) or grid-following (GFL) inverter are developed. Dedicated per-phase controllers are designed for the 3-Φ CAB inverter, which allow for GFM or GFL operation. This operation is experimentally verified to generate 3-Φ ac output at 60Hz. Moreover, various tests are performed which highlight the flexibility of control associated with operation of the CAB inverter.
KW - active power sharing
KW - controller design
KW - correction factor
KW - Cyclo-active-bridge inverter
KW - first harmonic approximation
KW - interconnected operation
KW - small-signal model
KW - three-phase
UR - https://www.scopus.com/pages/publications/105030321438
UR - https://www.scopus.com/pages/publications/105030321438#tab=citedBy
U2 - 10.1109/ECCE58356.2025.11259730
DO - 10.1109/ECCE58356.2025.11259730
M3 - Conference contribution
AN - SCOPUS:105030321438
T3 - 2025 IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025
BT - 2025 IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th Annual IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025
Y2 - 19 October 2025 through 23 October 2025
ER -