Energy storage system associated with solar energy system and method for controlling energy storage system

An energy storage system connected with a photovoltaic system and an electrical power grid may include: a plurality of DC/DC converters configured to control a plurality of battery racks; a power conversion system configured to control power related to the plurality of DC/DC converters and the photovoltaic system; and a power management controller configured to determine an operation mode and an output reference of the power conversion system and the plurality of DC/DC converters according to a state of the photovoltaic system. 一种与光伏系统和电力电网连接的能量存储系统，可以包括：多个DC/DC转换器，其被配置为控制多个电池架；电力转换系统，其被配置为控制与多个DC/DC转换器和光伏系统有关的电力；以及电力管理控制器，其被配置为根据光伏系统的状态来确定电力转换系统和多个DC/DC转换器的操作模式和输出基准。