US 12,476,578 B2
Photovoltaic tracking method and apparatus, tracking controller and photovoltaic tracking system
Zongjun Yang, Hefei (CN); Fan Li, Hefei (CN); Pengpeng Chen, Hefei (CN); and Jiansheng Lu, Hefei (CN)
Assigned to Sungrow Renewables Development Co., Ltd., Hefei (CN)
Appl. No. 18/577,796
Filed by Sungrow Renewables Development Co., Ltd., Hefei (CN)
PCT Filed Apr. 26, 2022, PCT No. PCT/CN2022/089160
§ 371(c)(1), (2) Date Jan. 9, 2024,
PCT Pub. No. WO2023/035625, PCT Pub. Date Mar. 16, 2023.
Claims priority of application No. 202111049082.5 (CN), filed on Sep. 8, 2021.
Prior Publication US 2024/0348196 A1, Oct. 17, 2024
Int. Cl. H02S 20/32 (2014.01); F24S 50/20 (2018.01); G05D 3/12 (2006.01)
CPC H02S 20/32 (2014.12) [F24S 50/20 (2018.05); G05D 3/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A photovoltaic tracking method, applied to a tracking controller, comprising:
determining an advance adjustment time instant between a previous preset adjustment time instant and a next preset adjustment time instant;
obtaining a target tracking angle of a tracking bracket corresponding to the next preset adjustment time instant; and
adjusting an angle of the tracking bracket to the target tracking angle in a case that a current time instant is the advance adjustment time instant, wherein the angle of the tracking bracket remains unadjusted at the previous preset adjustment time instant and the next preset adjustment time instant,
wherein the determining an advance adjustment time instant between a previous preset adjustment time instant and a next preset adjustment time instant comprises:
calculating a first total generated power in a target time period in a case that a tracking angle adjustment is performed at the previous preset adjustment time instant and the next preset adjustment time instant, respectively, wherein the target time period is a time period from the previous preset adjustment time instant to the next preset adjustment time instant;
calculating a second total generated power in the target time period in a case that the tracking angle adjustment is performed at the advance adjustment time instant, rather than at the previous preset adjustment time instant or the next preset adjustment time instant;
calculating a difference between the first total generated power and the second total generated power; and
determining a time instant at which the difference is maximized to be the advance adjustment time instant.