公开(公告)号：US20210126671A1

公开(公告)日：2021-04-29

申请号：US17137915

申请日：2020-12-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongbing Gao ,  Yanzhong Zhang ,  Tiansan Lin ,  Wei Shui ,  Chen Wang

IPC: H04B3/06 ,  H04B3/54

Abstract: An inverter in a power generation system converts a direct current that is input from a direct-current-side device into an alternating current for power supply. The inverter includes a control apparatus and a communications apparatus. The control apparatus controls the inverter to convert the direct current that is input from the direct-current-side device into an alternating current for power supply. The communications apparatus is coupled to the control apparatus, and sends a networking information request signal used to request networking information to the direct-current-side device in the power generation system through a direct-current power line, where a frequency of the networking information request signal is within a first frequency band. The communications apparatus also receives the networking information from the direct-current-side device; and sends a control signal to the direct-current-side device, where a frequency of the control signal is within a second frequency band.

公开(公告)号：US10892707B2

公开(公告)日：2021-01-12

申请号：US15916296

申请日：2018-03-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fayin Cao ,  Wei Shui ,  Xun Ma

IPC: H02S50/10 ,  H02S40/32

Abstract: A photovoltaic module monitoring apparatus includes a driver module, configured to: receive a status request differential signal sent by an inverter of the power system; obtain, according to the status request differential signal, status information of a photovoltaic PV module corresponding to the photovoltaic module monitoring apparatus; modulate the status information of the photovoltaic PV module to generate a status response differential signal; and send the status response differential signal to the inverter; and a bypass module parallelly connected to the driver module, configured to transmit the status request differential signal and the status response differential signal, where an impedance of the bypass module is less than an impedance of the photovoltaic PV module.