US 12,143,020 B2
Power apparatus applied in solid state transformer structure and three-phase power system having the same
Sheng-Hua Li, Taoyuan (TW); and Wen-Lung Huang, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Sep. 21, 2023, as Appl. No. 18/471,731.
Application 18/471,731 is a continuation of application No. 17/972,290, filed on Oct. 24, 2022, granted, now 11,811,327.
Application 17/972,290 is a continuation of application No. 16/863,318, filed on Apr. 30, 2020, granted, now 11,515,795, issued on Nov. 29, 2022.
Claims priority of application No. 201910725524.X (CN), filed on Aug. 7, 2019.
Prior Publication US 2024/0014740 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 1/00 (2007.01); H02J 3/38 (2006.01); H02J 7/00 (2006.01); H02M 3/158 (2006.01); H02M 3/24 (2006.01); H02M 3/335 (2006.01); H02M 3/28 (2006.01)
CPC H02M 3/24 (2013.01) [H02M 1/009 (2021.05); H02J 3/381 (2013.01); H02J 7/007 (2013.01); H02J 2207/20 (2020.01); H02J 2300/24 (2020.01); H02M 1/007 (2021.05); H02M 3/285 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A power apparatus assembly, the power apparatus assembly comprising:
a plurality n of power apparatuses, wherein n is a positive integer and is greater than 1, each of the plurality n of power apparatuses comprising:
an AC-to-DC conversion unit, having a first side and a second side, wherein the first side of the AC-to-DC conversion unit is coupled to one phase of a three-phase AC power source,
a first DC bus, coupled to the second side of the AC-to-DC conversion unit, and having a bus voltage,
a plurality m of DC-to-DC conversion units, wherein m is a positive integer and is greater than 1, each of the plurality m of DC-to-DC conversion units having a first side and a second side, wherein the first sides of the plurality m of DC-to-DC conversion units are coupled to the first DC bus, and the plurality m of DC-to-DC conversion units are configured to receive the bus voltage and convert the bus voltage into a plurality m of DC voltages, and
at least one second DC bus, coupled to the second sides of the plurality m of DC-to-DC conversion units, and configured to receive the plurality m of DC voltages, wherein a number of the at least one second DC bus is between 1 and m,
wherein the plurality m of DC-to-DC conversion units of each power apparatus are individually connected to a separate corresponding AC-to-DC conversion unit in the power apparatus,
wherein the plurality n of first sides of the AC-to-DC conversion units of the plurality n of power apparatuses are connected in series,
wherein a number of the at least one second DC bus of the plurality m of DC-to-DC conversion units of the plurality n of power apparatuses are the same.