Abstract:
PROBLEM TO BE SOLVED: To provide: a battery device for permitting continuous operation even when a battery device is out of order and for increasing stability of an energy storage apparatus; and an energy storage system including the same.SOLUTION: Provided is an energy storage system including: a battery device 304 that is configured from multiple battery unit modules 402, 403, 404; and a power converting system 303 that is configured to be connected to the battery device 304 and that converts electric power between a system and the battery device 304. The battery device 304 includes multiple switches 408, each of which establishes a connection between the power converting system 303 and corresponding one of the battery unit modules 402, 403, 404.
Abstract:
PROBLEM TO BE SOLVED: To provide a control circuit for an electric power circuit switch capable of breaking an electric power circuit.SOLUTION: A control circuit for an electric power circuit switch of the present invention includes: a sampling/hold (S/H) circuit section configured to sample a period of a detection signal of a current of an electric power system and provide a sampled signal; a discrete Fourier transformer connected to an output end of the sampling/hold circuit section and perform a discrete Fourier transforming on the one-period detection signal of the current of the electric power system provided from the sampling/hold circuit section to provide a magnitude and a phase of a frequency component of the current of the electric power system; a differentiator configured to differentiate the detection signal of the current of the electric power system to provide a rate of change of the current of the electric power system over time; and a controller connected to the discrete Fourier transformer and the differentiator, and configured to determine whether to perform trip controlling according to the magnitude of the frequency component of the current of the electric power system from the discrete Fourier transformer or the rate of change from the differentiator on the basis of the rate of change of the current of the electric power system and the reference rate of change.
Abstract:
PROBLEM TO BE SOLVED: To provide an electromagnetic switching device capable of improving endurance without being broken even in an iterative operation.SOLUTION: An electromagnetic switching device according to the present invention comprises: a housing; a fixed contact point provided inside the housing; a movable contact point positioned under the fixed contact point and repeatedly performing contact with and separation from the fixed contact point; a shaft with which the movable contact point is coupled; a return spring to continuously press the shaft downward; and a movable core coupled with the shaft. The shaft includes a pressing surface directed downward. The movable core is disposed so that an upper end thereof is brought into contact with the pressing surface. When the movable core and the shaft move up, the movable core presses the pressing surface to move up the pressing surface, and when the movable core and the shaft move down, the pressing surface presses the movable core to push down the movable core downward.
Abstract:
PROBLEM TO BE SOLVED: To provide an electromagnetic switching device capable of reducing a distance between a movable core and an upper fixed core when the temperature increases by using a property of a vertical volume of an elastic member at a bottom end of a shaft expanding as the temperature increases.SOLUTION: An electromagnetic switching device includes: a shaft coupled with a movable contact point to reciprocate up and down; and an elastic member coupled with a bottom end of the shaft, where a vertical volume of the elastic member expands as the temperature increases.
Abstract:
PROBLEM TO BE SOLVED: To provide a coupling assembly of a power element and a PCB in which the power element is securely fixed to the PCB and the heating efficiency of the power element is improved.SOLUTION: A coupling assembly of a power element and a PCB of this invention includes: the PCB; the power element coupled to an upper part of the PCB; a connection member positioned at an upper part of the power element; major fixing means which fixes the power element to the PCB; and a housing included at the outer side of the PCB. This invention improves a coupling force between the power element and the PCB. As a result, the electrical efficiency is improved and a heating value is reduced. Further, the invention enables faster heat generation through the connection member thereby improving the cooling effect.
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic switching device in which a pore can be minimized by simplifying the configuration of a yoke.SOLUTION: An electronic switching device comprises: a coil assembly incorporating a coil generating magnetic force; and a yoke covering a part of the outer surface of the coil assembly and into which the coil assembly is inserted. The yoke can include a yoke upper part constituting the upper surface, a yoke side part provided on one side of the yoke upper part and cutting off a magnetic force generated from a coil, and a coupling part disposed between the yoke upper part and the yoke side part so that they are formed integrally. The yoke side part can include an opening for providing a space so that the coil assembly is inserted therein, a first yoke side part coupled with the upper yoke by means of the coupling part, and a second yoke side part disposed on the reverse side of the first yoke side part.
Abstract:
PROBLEM TO BE SOLVED: To provide video provision device and method for providing a video having improved quality in real time on an HMI system.SOLUTION: The video provision device for providing real time video data captured by a video capturing device includes a real time video data reception unit for receiving real time video data, a real time video data filter unit performing video processing of real time video data, a real time video data storage unit for storing real time video data in a specific section out of the real time video data subjected to video processing, and a screen display unit for displaying real time video data. According to the invention, video data at a desired moment in time can be outputted through an HMI system.