US 12,021,456 B2
Isolated bidirectional converter and method for controlling the same
Jiacai Zhuang, Hefei (CN); Jun Xu, Hefei (CN); and Hanyu Wang, Hefei (CN)
Assigned to Sungrow Power Supply Co., Ltd., Hefei (CN)
Filed by Sungrow Power Supply Co., Ltd., Hefei (CN)
Filed on Mar. 15, 2022, as Appl. No. 17/694,767.
Claims priority of application No. 202110713267.5 (CN), filed on Jun. 25, 2021.
Prior Publication US 2022/0416672 A1, Dec. 29, 2022
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 3/00 (2006.01)
CPC H02M 3/33584 (2013.01) [H02M 1/0009 (2021.05); H02M 3/01 (2021.05); H02M 3/33573 (2021.05)] 15 Claims
OG exemplary drawing
 
1. An isolated bidirectional converter, comprising: a three-phase transformer module, a primary circuit, and a secondary circuit, wherein
a direct current end of the primary circuit is connected to a first end of the isolated bidirectional converter;
an alternating current end of the primary circuit is connected to a primary winding of the transformer module;
an alternating current end of the secondary circuit is connected to a secondary winding of the transformer module;
a direct current end of the secondary circuit is connected to a second end of the isolated bidirectional converter; and
at least two phases of the primary winding or at least two phases of the secondary winding each are connected in parallel to a first branch, wherein the first branch comprises a first inductor and a first current sensor that are connected in series.