US 12,136,887 B2
Multi-active bridge (MAB) converter and control method thereof and power conversion device
Jiajie Duan, Shanghai (CN); Jianxiong Yu, Shanghai (CN); Qiang Chen, Shanghai (CN); Han Li, Shanghai (CN); Cheng Luo, Shanghai (CN); and Dongsheng Li, Shanghai (CN)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Sep. 9, 2022, as Appl. No. 17/930,949.
Claims priority of application No. 202111060968.X (CN), filed on Sep. 10, 2021.
Prior Publication US 2023/0081157 A1, Mar. 16, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/12 (2006.01)
CPC H02M 3/33576 (2013.01) [H02M 1/12 (2013.01); H02M 3/33573 (2021.05)] 13 Claims
OG exemplary drawing
 
1. A multi-active bridge converter comprising n multi-active bridges, wherein each of the n multi-active bridges comprises a DC/AC bridge, a single-phase transformer and m AC/DC bridges, where n is greater than or equal to 3, and m is greater than or equal to 1;
the single-phase transformer is provided with one primary winding and m secondary windings; the DC/AC bridge is configured to receive a DC input signal, and AC output terminals of the DC/AC bridge are connected to the primary winding of the single-phase transformer; one terminal of the ith secondary winding among the m secondary windings of the single-phase transformer is connected to an AC input terminal of the ith AC/DC bridge among the m AC/DC bridges, the other terminal of the ith secondary winding is connected to the other terminals of the ith secondary windings among m secondary windings of single-phase transformers in the remaining (n−1) multi-active bridges, where i is greater than or equal to 1 and less than or equal to m; and
positive busbars DC+ and negative busbars DC− of the DC output terminals of all the AC/DC bridges among the n multi-active bridges are respectively connected with each other to serve as DC output terminals of the multi-active bridge converter,
wherein the AC/DC bridge is a three-terminal bridge.