US 10,892,707 B2
Photovoltaic module monitoring apparatus and power system
Fayin Cao, Shenzhen (CN); Wei Shui, Shenzhen (CN); and Xun Ma, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Mar. 9, 2018, as Appl. No. 15/916,296.
Application 15/916,296 is a continuation of application No. PCT/CN2017/073991, filed on Feb. 17, 2017.
Claims priority of application No. 2016 1 0338915 (CN), filed on May 20, 2016.
Prior Publication US 2018/0198406 A1, Jul. 12, 2018
Int. Cl. H02S 50/10 (2014.01); H02S 40/32 (2014.01)
CPC H02S 50/10 (2014.12) [H02S 40/32 (2014.12)] 16 Claims
OG exemplary drawing
 
1. A photovoltaic module monitoring apparatus, applied to a power system, wherein the photovoltaic module monitoring apparatus comprises:
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, wherein
an impedance of the bypass module is less than an impedance of the photovoltaic PV module.