公开(公告)号：US20190115868A1

公开(公告)日：2019-04-18

申请号：US16159204

申请日：2018-10-12

Applicant: LG ELECTRONICS INC.

Inventor： Dongho HAN ,  Hyunho DO ,  Juhwan YUN

IPC: H02S40/32 ,  H02J3/38 ,  H02J7/35 ,  H01L31/02

Abstract: According to an embodiment of the present invention, there is provided a photovoltaic module including a photovoltaic solar cell, a converter to convert a level of a direct current power from the photovoltaic solar cell, an inverter to convert the direct current power from the converter into an alternating current power, a controller to control the converter and the inverter, and a communication unit to perform electric power line communication with a gateway and at least one nearby photovoltaic module, in which the communication unit periodically transmits communication state information to the gateway and the at least one nearby photovoltaic module using the electric power line communication, and receives a message transmitted by the gateway along a path determined according to the communication state information.

公开(公告)号：US20150207456A1

公开(公告)日：2015-07-23

申请号：US14479120

申请日：2014-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Dongho HAN ,  Myonghwan KIM ,  Myungsoo HAM ,  Hyunho DO

IPC: H02S40/32 ,  H02M3/335 ,  H04B3/54 ,  H02S40/34

CPC classification number: H02S40/32 ,  H02J3/383 ,  H02J13/0031 ,  H02M3/285 ,  H02M7/48 ,  H02M2001/007 ,  H02S40/34 ,  H04B3/54 ,  H04B2203/5416 ,  Y02E10/563 ,  Y02E40/72 ,  Y04S10/123

Abstract: A power conversion apparatus, a photovoltaic module, and a communication device and a photovoltaic system including the same are discussed. The power conversion apparatus includes an inverter unit to perform alternating current (AC) voltage conversion based on direct current (DC) voltage from a solar cell module, a controller to control the inverter unit, and a communication unit to add a carrier frequency signal containing predetermined information to the converted AC voltage and output the AC voltage containing the predetermined information to a grid and, when a level of the converted AC voltage is equal to or less than a predetermined level, to add the carrier frequency signal containing the predetermined information to DC voltage and output the DC voltage containing the predetermined information to the grid. Consequently, it is possible to stably transmit information.

Abstract translation: 讨论了电力转换装置，光伏模块和通信装置以及包括它们的光伏系统。 电力转换装置包括逆变器单元，其基于来自太阳能电池模块的直流（DC）电压进行交流（AC）电压转换，控制器控制逆变器单元，以及通信单元，添加载波频率信号，该载波频率信号包含 将预定的信息转换成转换的交流电压，并将含有预定信息的交流电压输出到电网，并且当转换的交流电压的电平等于或小于预定电平时，将包含预定信息的载波频率信号加到 直流电压，并将包含预定信息的直流电压输出到电网。 因此，可以稳定地发送信息。