US 12,456,928 B2
Power conversion apparatus and power conversion system
Naoyuki Ishibashi, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 18/284,261
Filed by TDK CORPORATION, Tokyo (JP)
PCT Filed Mar. 30, 2021, PCT No. PCT/JP2021/013484
§ 371(c)(1), (2) Date Sep. 26, 2023,
PCT Pub. No. WO2022/208644, PCT Pub. Date Oct. 6, 2022.
Prior Publication US 2024/0072676 A1, Feb. 29, 2024
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 1/10 (2006.01); H02M 3/00 (2006.01)
CPC H02M 3/33576 (2013.01) [H02M 1/0058 (2021.05); H02M 1/10 (2013.01); H02M 3/01 (2021.05); H02M 3/33569 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A power conversion apparatus comprising:
a first power terminal including a first coupling terminal and a second coupling terminal;
a first arm provided on a first path coupling the first coupling terminal and the second coupling terminal to each other, the first arm including a first switching device provided between the first coupling terminal and a first node, a second switching device provided between the first node and a second node, and a third switching device provided between the second node and the second coupling terminal;
a second arm provided on a second path coupling the first coupling terminal and the second coupling terminal to each other, the second arm including a fourth switching device provided between the first coupling terminal and a third node, a fifth switching device provided between the third node and a fourth node, and a sixth switching device provided between the fourth node and the second coupling terminal;
a first inductor provided between the second node and a fifth node;
a second inductor provided between the fourth node and the fifth node;
a first capacitor provided between the fifth node and the second coupling terminal;
a first transformer including a first winding and a second winding, the first winding being provided on a path coupling the first node and the third node to each other;
a rectifying circuit including multiple rectifying devices coupled to the second winding;
a second power terminal coupled to the rectifying circuit and including a third coupling terminal and a fourth coupling terminal; and
a control circuit configured to control switching operations of the first arm and the second arm on a basis of a voltage at the second power terminal.