11results about "Powerline communications applications" patented technology

A method and system for diagnosing and evaluating a state of battery. The system for diagnosing and evaluating a state of an electric vehicle battery includes: a charging / discharging system that provides a direct high-voltage path for simultaneous charging and discharging between a diagnosis target vehicle (EV1) and a center vehicle (EV2), and a diagnostic device that obtains vehicle data corresponding to each of the charging and discharging from the EV1 through diagnostic communication and diagnoses and evaluates a state of a battery of the EV1 based on the vehicle data. In particular, energy discharged from a battery of the EV2 is charged to the battery of the EV1 through the charging / discharging system after energy discharged from the battery of the EV1 is charged to the battery of the EV2 through the charging / discharging system.

Provided is an apparatus for controlling a communication signal of a photovoltaic power generation system. The apparatus includes a memory storing at least one program therein, and at least one processor configured to execute the at least one program, wherein the at least one processor is further configured to acquire data on a communication status by monitoring a plurality of devices included in the photovoltaic power generation system, derive information related to communication of each of the devices based on the acquired data, and control a communication signal of at least one of the devices based on one of the acquired data or the information related to the communication.

The present invention relates to a technology in which a master communication unit and a slave communication unit of an elevator device perform power line communication through a power supply line equipped on a belt, and a technology in which a carrier frequency different from each other is used to individually communicate a carrying trolley controller connected to the master communication unit side and a plurality of jig devices connected to the slave communication unit side.

To provide a cable communication system instead of an on-vehicle CAN (controller area network) / LIN (local interconnection network) bass.SOLUTION: A cable communication system comprises: an electric power line or a transmission line that is connected to a plurality of communication units; and a master communication unit. In a first time region, each of the plurality of communication units includes a dedicated transmission frequency band, and the transmission frequency band of the plurality of communication units is not overlapped with each other, and is not overlapped to the transmission frequency band of the master communication unit or a transmission time. All of the transmission frequency bands can be coupled to a complete OFDM frequency band width, and has no guard band in the transmission frequency band.SELECTED DRAWING: Figure 1

A power system according to one embodiment of the present invention may include a first power conversion device; a second power conversion device; a first communication line connecting the first power conversion device and the second power conversion device; and a second communication line connecting the first power conversion device and the second power conversion device. Here, the first power conversion device and the second power conversion device each measure a state value for a monitoring object and exchange the measured state values ​​via the first communication line, and one or more of the first power conversion device and the second power conversion device can communicate via the second communication line to synchronize the measurement time of the state value.

A hoist communication device in a rail car of an automated material handling system in which a master communication unit and a slave communication unit perform power line communication through one power supply line provided on a belt and a rail car controller connected to the master communication unit is individually communicated with a plurality of gripper devices connected to the slave communication unit using different carrier frequencies.

A kind of electric meter positioning method based on electric meter clustering mechanism, steps are as follows: master station issues electric meter automatic clustering command message to CCO;CCO receives and transmits electric meter automatic clustering command message to all broadband carrier communication modules in subnet;Broadband carrier communication module reports first command response message to CCO;After CCO receives first command response message, the full network topology information matrix of district is established;CCO carries out clustering to electric meter based on full network topology information matrix and the phase information reported by each broadband carrier communication module when entering network;After clustering, CCO sends second command response message to master station, reports N only electric meter equipment number in this district and the clustering result of each electric meter;After master station receives second command response message, the clustering result of electric meter is saved, and the positioning of electric meter in district is completed.The electric meter positioning method of the present application does not need new hardware investment, and can improve the overall management efficiency of electric meter.

Provided is an apparatus for controlling a communication signal of a photovoltaic power generation system. The apparatus includes a memory storing at least one program therein, and at least one processor configured to execute the at least one program, wherein the at least one processor is further configured to acquire data on a communication status by monitoring a plurality of devices included in the photovoltaic power generation system, derive information related to communication of each of the devices based on the acquired data, and control a communication signal of at least one of the devices based on one of the acquired data or the information related to the communication.

The invention relates to a system and a method for diagnosing and evaluating the state of a battery. A system for diagnosing and evaluating the state of a battery of an electric vehicle includes: a charging / discharging system that provides a direct high-voltage path for simultaneous charging and discharging between a diagnosis target vehicle (EV1) and a center vehicle (EV2); the diagnostic device obtains vehicle data corresponding to each of charging and discharging from the EV1 through diagnostic communication, and diagnoses and evaluates a battery state of the EV1 based on the vehicle data. Specifically, after the EV2 battery is charged by the energy released from the EV1 battery through the charge / discharge system, the EV1 battery is charged by the energy released from the EV2 battery through the charge / discharge system.