US 11,990,835 B2
Power conversion system and control method
Dianbo Fu, Frisco, TX (US); and Heping Dai, Plano, TX (US)
Assigned to HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Sep. 13, 2021, as Appl. No. 17/473,202.
Application 17/473,202 is a continuation of application No. PCT/US2019/039868, filed on Jun. 28, 2019.
Prior Publication US 2021/0408915 A1, Dec. 30, 2021
Int. Cl. H02M 7/08 (2006.01); H02M 1/42 (2007.01); H02M 1/44 (2007.01); H02M 3/335 (2006.01); H02M 7/06 (2006.01); H02M 3/00 (2006.01)
CPC H02M 1/4216 (2013.01) [H02M 1/4208 (2013.01); H02M 1/44 (2013.01); H02M 3/335 (2013.01); H02M 7/06 (2013.01); H02M 3/01 (2021.05); H02M 3/33573 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a first rectifier coupled to a three-phase power source and configured to operate at a first operating frequency, a first amount of power flowing through the first rectifier from the three-phase power source;
a second rectifier coupled to the three-phase power source and configured to operate at a second operating frequency that is higher than the first operating frequency, a second amount of power flowing through the second rectifier from the three-phase power source, the second amount of power being a fraction of the first amount of power; and
an isolated power converter connected to outputs of the first rectifier and the second rectifier.