US 12,431,704 B2
Power supply system and power supply control method thereof
Mugui Zheng, Dongguan (CN); Wanxiang Ye, Dongguan (CN); and Tao Feng, Shenzhen (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Jan. 10, 2023, as Appl. No. 18/152,279.
Application 18/152,279 is a continuation of application No. PCT/CN2020/102080, filed on Jul. 15, 2020.
Prior Publication US 2023/0163590 A1, May 25, 2023
Int. Cl. H02J 1/10 (2006.01); H02J 7/35 (2006.01); H02S 40/36 (2014.01); H02S 50/00 (2014.01)
CPC H02J 1/10 (2013.01) [H02S 40/36 (2014.12); H02S 50/00 (2013.01); H02J 7/35 (2013.01); H02J 2300/24 (2020.01)] 8 Claims
OG exemplary drawing
 
1. A power supply system, comprising:
at least two photovoltaic module groups, one photovoltaic module group comprises at least one photovoltaic module, the at least one photovoltaic module is connected to at least one photovoltaic adapter, photovoltaic adapters connected to photovoltaic modules in a same photovoltaic module group are connected in series,
a junction box;
a bus; and
a centralized monitoring system;
the photovoltaic adapters of each of the at least two photovoltaic module groups are connected in parallel to the junction box after being connected in series, and are connected to the bus by using the junction box; and
the centralized monitoring system is configured to control, based on a voltage of the bus, the photovoltaic adapter connected to each photovoltaic module to adjust an output voltage of the photovoltaic adapter to a target voltage;
wherein each of the at least two photovoltaic module groups includes one or more photovoltaic modules, and wherein at least one group of the at least two photovoltaic module groups has a different number of photovoltaic modules in the group from at least another group of the at least two photovoltaic module groups;
wherein the photovoltaic adapter is provided in one photovoltaic module group and wherein the centralized monitoring system is configured to control the photovoltaic adapter connected to each photovoltaic module to adjust the output voltage to the target voltage based on a quantity of photovoltaic modules associated with the one photovoltaic module group;
wherein the centralized monitoring system is further configured to determine, based on the voltage of the bus and the quantity of photovoltaic modules in any of the at least two photovoltaic module groups, a voltage adjustment multiple corresponding to each photovoltaic module in any of the at least two photovoltaic module groups; and
wherein the centralized monitoring system is further configured to control the photovoltaic adapter connected to each photovoltaic module to adjust the output voltage to the target voltage based on the voltage adjustment multiple.