TY - JOUR
T1 - A Multiactive Bridge Converter With Inherently Decoupled Power Flows
AU - Bandyopadhyay, S.
AU - Purgat, P.
AU - Qin, Z.
AU - Bauer, P.
PY - 2021
Y1 - 2021
N2 - Multiactive bridge converters (MAB) have become a widely-researched candidate for the integration of multiple renewable sources, storage, and loads for a variety of applications, from robust smart grids to more-electric aircraft. Connecting multiple dc ports reduces power conversion stress, improves efficiency, reduces material billing, and increases power density. However, the power flows between the ports of an MAB converter are magnetically coupled via the high-frequency (HF) transformer, making it difficult to control. This article presents an MAB converter configuration with a rigid voltage source on the magnetizing inductance of the transformer resulting in inherently decoupled power flows. As a result, the configuration allows independent power flow control tuning of the rest of the ports. The theory behind the power flow decoupling of the proposed MAB configuration is analyzed in detail using a reduced-order model. A 2-kW, 100-kHz Si-C-based four-port MAB converter laboratory prototype is built and tested, showing completely decoupled control loops with fast transient response regardless of their control bandwidths. The proposed configuration therefore makes the operation and design of theMAB family of converters much more feasible for any number of ports and precludes the need for a high-performance dynamic decoupling controller
AB - Multiactive bridge converters (MAB) have become a widely-researched candidate for the integration of multiple renewable sources, storage, and loads for a variety of applications, from robust smart grids to more-electric aircraft. Connecting multiple dc ports reduces power conversion stress, improves efficiency, reduces material billing, and increases power density. However, the power flows between the ports of an MAB converter are magnetically coupled via the high-frequency (HF) transformer, making it difficult to control. This article presents an MAB converter configuration with a rigid voltage source on the magnetizing inductance of the transformer resulting in inherently decoupled power flows. As a result, the configuration allows independent power flow control tuning of the rest of the ports. The theory behind the power flow decoupling of the proposed MAB configuration is analyzed in detail using a reduced-order model. A 2-kW, 100-kHz Si-C-based four-port MAB converter laboratory prototype is built and tested, showing completely decoupled control loops with fast transient response regardless of their control bandwidths. The proposed configuration therefore makes the operation and design of theMAB family of converters much more feasible for any number of ports and precludes the need for a high-performance dynamic decoupling controller
KW - DC-DC converter
KW - decoupled power flow management
KW - multiactive-bridge converter
KW - multiwinding transformer
UR - http://www.scopus.com/inward/record.url?scp=85092744766&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2020.3006266
DO - 10.1109/TPEL.2020.3006266
M3 - Article
SN - 0885-8993
VL - 36
SP - 2231
EP - 2245
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 2
ER -