Abstract: An apparatus having a first memory circuit, a plurality of arithmetic modules, and a plurality of second memory circuits. The first memory circuit may be configured to read or write data to or from a host. The plurality of arithmetic modules each may be configured to be enabled or disabled in response to control signals received from the first memory circuit. The plurality of second memory circuits may be configured to read or write data to or from the first memory circuit through a data exchange layer. The arithmetic modules provide cryptographic protection of the data.

Abstract: A method for establishing an Ethernet communication link of a digital protective relay having at least two communication ports, includes: configuring physical layers of a first communication port and a second communication port; determining whether or not auto-negotiation with respect to the first communication port or the second communication port is successful; and replacing configuration information regarding one of physical layers of the first communication port and the second communication port with configuration information regarding the other of the physical layers of the first communication port and the second communication port according to whether or not the auto-negotiation with respect to the first communication port and the second communication port has been successful. Although Ethernet ports of the digital protective relay are connected without priority, the digital protective relay may perform the same operation.

Abstract: An electric vehicle comprising a battery charges the battery through an electric vehicle power supply device, and transmits to a user terminal device a first charging information notification message, which includes information on a current charging status of the battery. The electric vehicle detects an interruption to the charging of the battery on the basis of the current charging status of the battery, and checks the cause for the interruption to the charging of the battery. When the interruption to the charging of the battery is detected, the electric vehicle transmits to the user terminal device a second charging information notification message, comprising information on battery charging status that indicates the interruption to the charging of the battery and charging error information that indicates the cause of the interruption to the charging of the battery.

Abstract: In a system for remotely managing an electric vehicle, a meter related to charge of the electric vehicle, installed in each parking lot, and a meter installed in each home communicate information related to the electric vehicle using a communication network constructed for the purpose of energy management. The meter in each home is linked with an in-home display (IHD) device installed in the home, and a user identifies and manages, in the home, information of the user's own electric vehicle through the IHD device. The user remotely controls the electric vehicle in the parking lot through the IHD device. Accordingly, it is possible to considerably improve convenience in the use of the electric vehicle, in relation to information management or control of the electric vehicle.

Abstract: A digital protective relay includes at least one daughter PCB having an electronic circuit which generates electromagnetic interference noise or high frequency noise; and a backplane printed circuit board having, on an upper surface thereof, a plurality of first connectors for connection with the daughter PCB, connected to the daughter PCB through the first connectors, and providing a noise discharge path along which the electromagnetic interference noise or the high frequency noise from the daughter PCB flows to an external ground.

Abstract: An electromagnetic relay includes a housing, a fixed contact provided within the housing, a movable contact movable to contact or be separated from the fixed contact, and a driving unit configured to drive the movable contact to be in contact with or separated from the fixed contact, and including a coil, a yoke disposed within the coil and having an inner section for forming a magnetic path inside and outside of the coil, a movable core disposed within the coil to be attractable by the inner section, and a shaft having one end connected to the movable core and another end connected to the movable contact, capable of facilitating an assembling process of a shaft and a movable core by eliminating a welding process.

Abstract: The present disclosure relates to a system for setting offset and gain of an analog input module, the system configured to set the offset and gain of the analog input module by outputting an offset value and a gain value to the analog module, using the analog module formed with a plurality of channels. The system includes a control unit configured to output a control signal for outputting the offset value and the gain value, a setting value providing unit configured to output a setting signal by the control signal from the control unit, wherein the setting signal is in a form of a pulse including the offset value and the gain value, and relay unit configured to be switched for applying the setting signal to the analog input module by the control signal from the control unit.

Abstract: An apparatus for sensing an overcurrent is provided. The apparatus for sensing an overcurrent includes an inverter converting a direct current (DC) into an alternating current (AC) and supplying the AC to a motor to allow the motor to operate; a current sensing unit provided on a connection between the inverter and the motor and measuring an overcurrent of a control current value output from the inverter; and a control unit checking with the current sensing unit whether the overcurrent is sensed, and determining whether to operate the inverter, wherein the control unit creating an interrupt service routine (ISR) for checking overcurrent information and checks the overcurrent information according to a created ISR, when the overcurrent is sensed through the current sensing unit.

Abstract: A method of charging and discharging battery energy storage device is provided. The method includes measuring a voltage and a frequency of a grid, measuring a state of charge (SOC) value of a battery, calculating an SOC offset value and an SOC feedback gain value from the measured SOC value of the battery, and performing a voltage droop control based on the voltage of the grid and a frequency droop control on the basis of the frequency of the grid, the SOC offset value and the SOC feedback gain value and controlling charging and discharging of the battery.

Abstract: A device for controlling an electric motor is provided. The device includes: an inverter supplying a current to an electric motor; a current sensor sensing a current supplied from the inverter to the electric motor; and a control unit enabling the current to be supplied from the inverter to the electric motor, obtaining first and second offset values sensed from the current sensor at a plurality of times, comparing the plurality of offset values obtained, and updating the first offset value to the second offset value according to a result of comparing the offset values.

Abstract: The present disclosure relates to a data display method and a data display apparatus for an energy management system. The data display method according to the present disclosure comprises receiving a table generation request signal for data received from a data acquisition and management system, receiving a table display form and selection information of sorting, receiving at least one layer according to a selected table display form, sorting and displaying the received data according to the input table display form and the input layer, sensing a sorting request signal for the displayed data, and re-sorting and displaying the displayed data based on the received sorting request signal.

Abstract: Disclosed is a charging control device for use in an electric vehicle to control an internal charging device of the electric vehicle. An auxiliary battery supplies DC power. A power supply device change a level of a voltage of the DC power to supply power. A power supply control device controls the supply of the DC power to the power supply device. A power supply device control signal generation unit transmits a charging start signal to the power supply control device in the case where a charging start condition is satisfied.

Abstract: Disclosed are a three-phase wiring detection device and a coincidence phase detection method. The three-phase wiring detection device and the coincidence phase detection method compare a power factor relationship between a three-phase voltage and a three-phase current, and determines whether a coincidence phase is coincident between the three-phase voltage and the three-phase current, thereby checking whether the coincidence phase is accurately coincident. Therefore, whether the coincidence phase is coincident between the three-phase voltage and the three-phase current can be checked, and a function of a reverse phase detector and a function of a coincidence phase checker can be implemented. Also, the three-phase voltage and the three-phase current can be accurately detected.

Abstract: An electromagnetic relay includes a housing; a fixed contact provided within the housing; a movable contact disposed within the housing so as to be contactable to and separable from the fixed contact; a driving unit configured to drive the movable contact, and including a shaft having one end connected to the movable contact and a compression spring for applying an elastic force to the movable contact so as to be in contact with the fixed contact; and an arc protector including an arc shielding portion for shielding an arc, and a compression spring support portion formed to protrude from the arc shielding portion to support the compression spring, the compression spring support portion comprising a shaft accommodating portion for accommodating the shaft therein. Under such configuration, the number of required components can be reduced and generation of a gap can be prevented.

Abstract: Disclosed is a relay. The relay includes a first fixed contact connected to a power source, a second fixed contact separated from the first fixed contact, and connected to a load, and a moving contact configured to be brought into contact with or separated from the first fixed contact and the second fixed contact. The moving contact includes a first moving contact configured to be brought into contact with or separated from the first fixed contact and the second fixed contact and a second moving contact separated from the first moving contact, and configured to be brought into contact with or separated from the first fixed contact and the second fixed contact. Accordingly, the moving contact can be prevented from being separated from the fixed contact by an inter-electron repulsion.

Abstract: A connection detecting device for an electric vehicle charger, which detects whether the vehicle charger is connected to the electric vehicle, is provided. The connection detecting device includes a connection unit connecting a coupler of the vehicle charger to the electric vehicle, a power supply unit supplying a voltage to the connection unit when being turned on, a first signal generation unit generating a first signal to turn on the power supply unit when the vehicle charger is connected to the electric vehicle, and a control unit determining whether the vehicle charger is connected to the electric vehicle on the basis of the voltage applied to the connection unit. The first signal generation unit is an open circuit through which a current does not flow, when the vehicle charger is disconnected from the electric vehicle.

Abstract: Provided are: a photocoupling method that overcomes the problem of the stagnation of photocoupling with a target nucleotide using a probe containing a photo-responsive nucleotide, and that improves the photocoupling efficiency; and a photocoupling kit. The photocoupling method is characterized by hybridizing a target site present in a nucleic acid sample with a first probe having a sequence complementary to the target site and containing a photo-responsive nucleotide, in a reaction solution, and carrying out photocoupling by photo-irradiation, wherein self-assembly caused by the photo-responsive nucleotide contained in the first probe is suppressed. The photocoupling kit is characterized by comprising a first probe having a sequence complementary to a target site present in a nucleic acid sample, and containing a photo-responsive nucleotide; and a second probe being highly complementary to the first probe.

Abstract: A reverse battery protection device and an operating method thereof are provided. The reverse battery protection device includes a signal generating unit measuring a voltage of a battery, and, when the measured voltage is not smaller than a reference voltage, generating an electrical signal, a signal converting unit converting the generated electrical signal into a DC voltage, and a switch unit switching to allow a current to flow between the battery and a converter, when the converted DC voltage is received.

Abstract: A media access control (MAC) filtering method is provided. The MAC filtering method includes setting a variable of condition on a target frame to be re-transmitted, with a relay control logic; receiving data from a physical layer; storing the received data in a relay buffer; determining whether to re-transmit the receive data; monitoring a transmission state of a MAC control logic and transmitting the received data while the MAC control logic is not used, to prevent data collision, when as a result of the determination that the receive data needs to be re-transmitted; and storing information that the received data is being transmitted, into a transmit state memory in the MAC control logic, when the received data is transmitted.