US 12,395,098 B2
Bidirectional inverter circuit and bidirectional inverter
Yanshen Hu, Guangdong Province (CN)
Assigned to HUIZHOU ROYPOW TECHNOLOGY CO., LTD., Guangdong Province (CN)
Filed by Huizhou RoyPow Technology Co., Ltd., Guangdong Province (CN)
Filed on Jul. 27, 2023, as Appl. No. 18/227,265.
Claims priority of application No. 202211602394.9 (CN), filed on Dec. 14, 2022.
Prior Publication US 2024/0204691 A1, Jun. 20, 2024
Int. Cl. H02M 1/12 (2006.01); H02M 1/00 (2006.01); H02M 1/088 (2006.01); H02M 7/487 (2007.01); H02M 7/797 (2006.01)
CPC H02M 7/797 (2013.01) [H02M 1/0009 (2021.05); H02M 1/088 (2013.01); H02M 1/126 (2013.01); H02M 7/487 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bidirectional inverter circuit, comprising: a positive direct current (DC) bus, a negative DC bus, M bidirectional switch networks and M alternating current (AC) buses, wherein M≥2;
wherein,
the M bidirectional switch networks comprises m1 first type of bidirectional switch networks, m2 second type of bidirectional switch networks, and m3 third type of bidirectional switch networks, each of the m1 first type of bidirectional switch networks comprises an inverting coupling transformer, a filter inductor and a plurality of switch bridge arms, each of the m2 second type of bidirectional switch networks comprises a filter inductor and a switch bridge arm, each of the m3 third type of bidirectional switch networks comprises a switch bridge arm, wherein m1+m2+m3=M, and m1≥1;
in each of the m1 first type of bidirectional switch networks, positive DC ends of the plurality of switch bridge arms are respectively connected to the positive DC bus, negative DC ends of the plurality of switch bridge arms are respectively connected to the negative DC bus, and each bridge-arm midpoint of the plurality of switch bridge arms is respectively connected to one winding of the inverting coupling transformer, a midpoint of the inverting coupling transformer is connected to a first end of the filter inductor, and a second end of the filter inductor is connected to one of the M AC buses;
if m2≥1, in each of the m2 second type of bidirectional switch networks, a positive DC end, a negative DC end and a bridge-arm midpoint of the switch bridge arm are respectively connected to the positive DC bus, the negative DC bus and a first end of the filter inductor in a one-to-one correspondence, and a second end of the filter inductor is connected to one of the M AC buses; and
if m3≥1, in each of the m3 third type of bidirectional switch networks, a positive DC end, a negative DC end and a bridge-arm midpoint of the switch bridge arm are respectively connected to the positive DC bus, the negative DC bus and one of the M AC buses in a one-to-one correspondence.