US 11,888,322 B2
Photovoltaic system and maximum power point tracking control method for photovoltaic system
Binjie Cheng, Shanghai (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 29, 2022, as Appl. No. 17/853,324.
Claims priority of application No. 202110737375.6 (CN), filed on Jun. 30, 2021.
Prior Publication US 2023/0006449 A1, Jan. 5, 2023
Int. Cl. H02J 1/10 (2006.01); H02J 3/38 (2006.01); H02M 7/537 (2006.01)
CPC H02J 3/381 (2013.01) [H02M 7/537 (2013.01); H02J 2300/26 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A photovoltaic system comprising:
a maximum power point tracking MPPT controller and a power converter connected to each other;
wherein the MPPT controller is configured to: be connected to a photovoltaic array, and track a global maximum power point MPP of the photovoltaic array; and
the MPPT controller is further configured to obtain, when there is a periodic shade for the photovoltaic array, a multi-peak search start moment of a global MPPT of the photovoltaic array based on a status of tracking the global MPP of the photovoltaic array in a target time period, so that when the multi-peak search start moment in each MPPT period arrives, the global MPPT of the photovoltaic array is started, to output a working point of the global MPP of the photovoltaic array to the power converter, wherein the target time period comprises a plurality of MPPT periods.