US 12,470,065 B2
Power supply system and current conversion method
Zhangping Shao, Shanghai (CN); Kai Xin, Shanghai (CN); and You Zhou, Shenzhen (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on May 20, 2024, as Appl. No. 18/668,538.
Application 18/668,538 is a continuation of application No. PCT/CN2021/134507, filed on Nov. 30, 2021.
Prior Publication US 2024/0305099 A1, Sep. 12, 2024
Int. Cl. H02J 3/18 (2006.01); H02J 3/38 (2006.01)
CPC H02J 3/1835 (2013.01) [H02J 3/38 (2013.01); H02J 2300/24 (2020.01); H02J 2300/28 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A power supply system comprising:
a power generation apparatus;
a converter circuit; and
a drive control circuit, wherein the power generation apparatus is connected to an input port of the converter circuit, an output port of the converter circuit is connected to a power grid, the drive control circuit is connected to the converter circuit, the converter circuit is configured to:
output a first reactive current to the power grid when a voltage value of the output port of the converter circuit decreases from a first working voltage value to a second working voltage value and the second working voltage value is less than or equal to a first trigger voltage value, to increase the voltage value of the output port of the converter circuit to a first ride-through voltage value, and the first ride-through voltage value is greater than the first trigger voltage value; and
the drive control circuit is configured to:
in a process in which the converter circuit outputs the first reactive current to the power grid, when it is detected that the voltage value of the output port of the converter circuit increases to a third working voltage value and the third working voltage value is greater than or equal to a first recovery voltage value, control the converter circuit to output a second reactive current to the power grid, to recover the voltage value of the output port of the converter circuit to the first working voltage value, and the first recovery voltage value is greater than the first ride-through voltage value.