公开(公告)号：US20240291283A1

公开(公告)日：2024-08-29

申请号：US18584765

申请日：2024-02-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Aitang Chen ,  Dili Zhu

IPC: H02J3/46 ,  H02J3/00 ,  H02J3/01

CPC classification number: H02J3/46 ,  H02J3/0075 ,  H02J3/01 ,  H02J2300/26

Abstract: A power conversion apparatus including a first direct current conversion module, a second direct current conversion module, and a control module. The control module is configured to: in response to an output voltage of the first photovoltaic string being greater than an output voltage of the second photovoltaic string and a comparison value between the two output voltages being greater than a first threshold: control a switching transistor in the first direct current conversion module to be turned on or off to decrease the output voltage of the first photovoltaic string and control a switching transistor in the second direct current conversion module to be turned on or off to increase the output voltage of the second photovoltaic string, so that a comparison value between the output voltage of the second photovoltaic string and a bus voltage of the direct current bus is less than a second threshold.

公开(公告)号：US20240097616A1

公开(公告)日：2024-03-21

申请号：US18523408

申请日：2023-11-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Aitang Chen ,  Zhiwu Xu ,  Haibin Guo

IPC: H02S40/38 ,  H02J7/35 ,  H02S40/32

CPC classification number: H02S40/38 ,  H02J7/35 ,  H02S40/32

Abstract: This application provides a photovoltaic energy storage control module and a photovoltaic energy storage control method. A control component included in the photovoltaic energy storage control module can set reference values of bus voltages of a first direct-current converter, a second direct-current converter, and an inverter. Further, the first direct-current converter, the second direct-current converter, and the inverter can automatically adjust a power supply relationship among the first direct-current converter, the second direct-current converter, and the inverter based on a value relationship among the reference values of the bus voltages of the first direct-current converter, the second direct-current converter, and the inverter. In this way, flexibility of the photovoltaic energy storage control module is improved.