公开(公告)号：US20170222601A1

公开(公告)日：2017-08-03

申请号：US15484702

申请日：2017-04-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunyan Xu ,  Yongbing Gao

IPC: H02S50/00 ,  G01R31/08

CPC classification number: H02S50/00 ,  G01R31/08 ,  H02S50/10

Abstract: A method and an apparatus for monitoring a photovoltaic module to reduce a commissioning workload and reduce commissioning complexity, the method includes obtaining communication addresses of all module voltage monitoring apparatuses, establishing a connection to a corresponding module voltage monitoring apparatus using the communication address, obtaining a relative voltage of a corresponding module relative to a voltage reference point from the module voltage monitoring apparatus to which the connection is established; obtaining, according to relative voltages obtained from all the module voltage monitoring apparatuses, a physical location that is of a module corresponding to each module voltage monitoring apparatus and that is in the photovoltaic string; establishing an information table according to the communication address of each module voltage monitoring apparatus and the physical location of the module corresponding to each module voltage monitoring apparatus, and performing module abnormality detection according to the information table.

公开(公告)号：US10103689B2

公开(公告)日：2018-10-16

申请号：US15822716

申请日：2017-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunyan Xu ,  Yongbing Gao

IPC: H02M7/493 ,  H02S40/38 ,  H02S40/32 ,  G05F1/67 ,  H02J3/38 ,  H02M1/12

Abstract: The present invention relates to the photoelectric field, and provides a power supply system and a power supply method, so as to reduce costs of a lead between a positive electrode or a negative electrode of a photovoltaic panel and a direct current voltage source. The power supply system includes: a photovoltaic panel string, an inverter connected to the photovoltaic panel string, and a transformer connected to the inverter. The power supply system further includes a voltage controller. The voltage controller includes a first terminal, a second terminal, and a third terminal. The voltage controller further includes: a first sampling unit, a control unit connected to the first sampling unit, and an inverter unit.

公开(公告)号：US10171028B2

公开(公告)日：2019-01-01

申请号：US15484702

申请日：2017-04-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunyan Xu ,  Yongbing Gao

IPC: H02S50/00 ,  H02S50/10 ,  G01R31/08

Abstract: A method and an apparatus for monitoring a photovoltaic module to reduce a commissioning workload and reduce commissioning complexity, the method includes obtaining communication addresses of all module voltage monitoring apparatuses, establishing a connection to a corresponding module voltage monitoring apparatus using the communication address, obtaining a relative voltage of a corresponding module relative to a voltage reference point from the module voltage monitoring apparatus to which the connection is established; obtaining, according to relative voltages obtained from all the module voltage monitoring apparatuses, a physical location that is of a module corresponding to each module voltage monitoring apparatus and that is in the photovoltaic string; establishing an information table according to the communication address of each module voltage monitoring apparatus and the physical location of the module corresponding to each module voltage monitoring apparatus, and performing module abnormality detection according to the information table.