US 12,334,772 B2
Carrier signal generator and uninterruptible power supply comprising same
Huahong Ning, Guang Dong (CN); Dengke Zhang, Guang Dong (CN); Lei Cao, Shenzhen (CN); Dan Liu, Shenzhen (CN); and Qinghui Ding, Guang Dong (CN)
Assigned to Santak Electronic (Shenzhen) Co., Ltd., (CN)
Filed by Santak Electronic (Shenzhen) Co., Ltd., Guang Dong (CN)
Filed on Sep. 12, 2023, as Appl. No. 18/465,211.
Claims priority of application No. 202211123035.5 (CN), filed on Sep. 15, 2022.
Prior Publication US 2024/0097483 A1, Mar. 21, 2024
Int. Cl. H02J 9/06 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01)
CPC H02J 9/061 (2013.01) [H02J 7/0047 (2013.01); H02J 7/342 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A carrier signal generator for an uninterruptible power supply, the uninterruptible power supply including N universal power units, and each of the N universal power units supplying an uninterruptible power supply output from mains or a rechargeable battery to a load, the carrier signal generator comprising:
a master processing module that outputs a corresponding reference signal according to a normal or abnormal state of the mains supplying power to each of a plurality of universal power units of the uninterruptible power supply; and
N slave processing modules, having input terminals coupled to the master processing module, and output terminals coupled to corresponding universal power units, wherein the slave processing modules are used to synchronously receive the reference signal and to control the corresponding universal power units to receive power from the mains or a corresponding rechargeable battery;
wherein when the mains is normal, each slave processing module generates a three-phase rectification control signal synchronized with the reference signal, and the three-phase rectification control signal is configured to control a corresponding universal power unit, so that the N universal power units synchronously rectify and output power from the mains; and
when the mains is abnormal, the N slave processing modules generate corresponding first DC-DC control signals independently of each other, and each first DC-DC control signal controls a corresponding universal power unit so as to perform DC conversion and output power from the corresponding rechargeable battery.