Patents Assigned to LSI
  • Method for restarting induction machine
    Patent number: 9793845
    Abstract: Disclosed embodiments relate to apparatuses, methods, and systems for restarting an induction machine. In some embodiments, a method includes estimating a position of a rotor and a speed thereof in a position and speed estimation Operation, resetting a speed reference to correspond to the speed of the rotor in a speed reference resetting Operation, generating a control voltage corresponding to the speed reference to regulate a voltage magnitude using the control voltage in a voltage magnitude regulation Operation, and re-accelerating the induction machine up to a target speed after the regulation of the voltage magnitude in a re-acceleration Operation.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: October 17, 2017
    Assignees: LSIS CO., LTD., RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY
    Inventors: Hak-Jun Lee, Anno Yoo, Se-Hwan Kim, Jul-Ki Seok
  • Apparatus and method for data processing in SCADA system
    Patent number: 9785142
    Abstract: The present disclosure relates to an apparatus and method for processing data in a supervisory control apparatus. A data processing method in a supervisory control apparatus according to an embodiment of the present disclosure may include acquiring state data from at least one control and instrumentation target apparatus; checking the acquired state data; reading a prestored library corresponding to the state data; decoding the state data with reference to the read library; and outputting the decoded state data.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: October 10, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jong Kab Kwak
  • Low voltage electromagnetic interference filter of electric vehicle
    Patent number: 9787275
    Abstract: A low voltage electromagnetic interference (EMI) filter of an electric vehicle is provided. In the low voltage EMI filter, a pair of Y capacitor units are respectively installed in input and output ends of the low voltage EMI filter. A normal mode (DM) filter and a common mode (CM) filter are installed between the pair of Y capacitor units. The pair of Y capacitor units, the DM and CM filters discharge CM and DM noises generated in a low voltage battery connection unit to a sash GND (earth) step by step and reduce noises of the low voltage battery connection unit.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: October 10, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jong In Sun
  • Power measurement system and load power monitoring system using the same and operating method thereof
    Patent number: 9787248
    Abstract: A load power monitoring system includes: an external power supply source; a renewable energy source configured to generate power or store a power applied from the external power supply source, and discharge the generated or stored power; a distribution board configured to distribute a power applied from the external power supply source or the renewable energy source to an electronic device; a power measurement device configured to detect power amount data of at least one of the external power supply source and the renewable energy source; a second power measurement device configured to detect power amount data distributed to the electronic device; and a monitoring server configured to collect power amount data detected by each of the power measurement devices and monitor a power of a load on the basis of the collected power amount data.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 10, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Hun Park, Young Gyu Yu
  • Dispatcher training simulating device and operation method thereof
    Patent number: 9785170
    Abstract: A dispatcher training simulating device includes an energy management system (EMS) actual measurement data loader configured to load EMS actual measurement data to the dispatcher training simulating device, an EMS actual measurement data initializing unit configured to calculate a power flow by adjusting a generator output in the loaded EMS actual measurement data, and generate initialized EMS actual measurement data based on whether the calculated power flow converges on a predetermined value, and a dispatcher training simulation providing unit configured to provide a dispatcher training simulation based on the initialized EMS actual measurement data.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: October 10, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Tae Kwon Kim
  • Vacuum circuit breaker
    Patent number: 9787067
    Abstract: Disclosed herein is a vacuum circuit breaker. In some embodiments, a vacuum circuit breaker includes a cradle having a rail which forms a travel route; a main body being movably mounted to the cradle and configured to be in a test position or in an operation position; a wheel traveling along the travel route and configured to move the main body to the test position or the operation position; an interlock plate provided in the main body so as to move together with the main body; and a ground interlock device restraining the movement of the main body by restraining the movement of the interlock plate when grounded.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: October 10, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Yongi-Ik Park, Woo-Jin Park, Kyu-Jung Kim
  • ENERGY MANAGEMENT SERVER, ENERGY MANAGEMENT SYSTEM AND THE METHOD FOR OPERATING THE SAME
    Publication number: 20170289248
    Abstract: An energy management server includes a controller configured to process first data collected from a power system into a second data; a memory database unit configured to classify the second data into dynamic data and static data according to an established data classification to store the dynamic and static data; and a duplex controller configured to selectively receive the first data and the dynamic data or the static data to synchronize with another energy management server.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Applicant: LSIS CO., LTD.
    Inventors: Seok Chan LEE, Jong Kab KWAK, Tae Seop KIM
  • HUMAN MACHINE INTERFACE SYSTEM AND THE METHOD FOR OPERATING THE SAME
    Publication number: 20170289212
    Abstract: A human machine interface (HMI) system includes a human machine interface (HMI) content server configured to control content information for a content provided to a display equipment; and a HMI configured to receive device information and user experience information transmitted from the display equipment and output an analysis result produced by analyzing the device information and the user experience information to the HMI content server to control the content information.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 5, 2017
    Applicant: LSIS CO., LTD.
    Inventors: Seok Chan LEE, Seung Ju LEE, Yeo Chang YOON, Shin Jo KONG, Ae Kyoung BAE, Jang Hyeok YUN, Ho Young WHANG
  • VACUUM INTERRUPTER FOR A VACUUM CIRCUIT BREAKER
    Publication number: 20170287659
    Abstract: A vacuum interrupter for a vacuum circuit breaker is disclosed, in which a center shield is arranged between an upper insulating envelope and a lower insulating envelope, whereby the center shield is not provided inside each of the insulating envelopes and thus outer diameters of the respective insulating envelopes are reduced.
    Type: Application
    Filed: January 21, 2017
    Publication date: October 5, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Jaeseop RYU
  • Apparatus for detecting noise in power supply of PLC analogue input and output module
    Patent number: 9778292
    Abstract: An apparatus for detecting noise in a power supply of a PLC analog input/output module is provided. The apparatus may include a capacitor configured to extract a noise determination target voltage from a driving voltage outputted from the power supply; a voltage conversion unit configured to convert the noise determination target voltage outputted from the capacitor and to output the converted noise determination target voltage; a comparison unit configured to compare the noise determination target voltage converted by the voltage conversion unit with a reference voltage; and a determination unit configured to determine whether the noise determination target voltage is a noise, based on a comparison result by the comparison unit.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: October 3, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jung Wook Kim
  • Motor protection relay and method for starting motor of motor protection relay
    Patent number: 9780699
    Abstract: The present disclosure relates to a motor protection relay and a method for starting a motor of the motor protection relay, and particularly, to a motor protection relay capable of softly starting a motor, without a separate starting device, and performing soft starting of the motor more stably, effectively, and simply, by variably controlling start power for starting the motor to the motor through controlling of the relay itself and supplying the variably controlled start power to the motor, and a method for starting a motor thereof.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: October 3, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Kyungho Kim
  • SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM AND DATA ENGINEERING METHOD THEREOF
    Publication number: 20170277155
    Abstract: A supervisory control and data acquisition (SCADA) system includes: a database configured to store data on the SCADA system; a client; and a server configured to transmit the data stored in the database to the client in response to a request of the client. The client is configured to display a supervisory screen for monitoring the SCADA system on the basis of the transmitted data. When data on an object is added as a graphic editor for editing the supervisory screen is executed, the server or client updates the database on the basis of the data on the object, and reflects, to the supervisory screen, creation of the object, input through the graphic editor.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 28, 2017
    Applicant: LSIS CO., LTD.
    Inventors: Seok Chan LEE, Seung Ju LEE, Yeo Chang YOON, Shin Jo KONG, Jang Hyeok YUN
  • Circuit breaker
    Patent number: 9774180
    Abstract: A circuit breaker according to the present invention includes a terminal switching unit mounted in an enclosure thereof, and the terminal switching unit accommodates, in a base as an outer casing thereof, a fixed contactor and a movable contactor contactable with and separated from each other, a sliding unit rotatably supporting the movable contactor, and a detection mechanism to detect a fault current. Radiators are provided at side portions of at least one of a contact portion where the movable contactor comes in contact with the fixed contactor, the sliding unit and the detection mechanism, each radiator radiating heat to the outside of the base. This may prevent an increase in temperature of the circuit breaker within a limited space without an increase in costs.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 26, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Woong Jae Kim
  • Apparatus for remotely operating handle of circuit breaker
    Patent number: 9773630
    Abstract: An apparatus for remotely operating a handle of a circuit breaker which includes a handle, a first plate, to which the handle is rotatably connected, allowing the handle to be attached to a distributing board, a second plate allowing the first plate to be attached to the distributing board, a first link transferring a rotary motion of the handle, as a linear motion, and a second link rotated according to the linear motion of the first link to provide rotational force enabling the circuit breaker to be switched on or off, includes a handle operating member connected to the second link, having an elastic member to provide elastic force to the second link, while being rotated cooperatively according to rotation of the second link, to fixedly support an ON or OFF position of the handle.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: September 26, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jun Yong Jang
  • MOTOR CONTROL CENTER UNIT
    Publication number: 20170271854
    Abstract: A motor control center (MCC) unit includes a drawer having a space for accommodating a circuit breaker, a hinge bracket installed on one of left and right sides of the drawer, a base connected to the hinge bracket by a hinge shaft, and a display mechanism installation plate fastened to the base by a fastening member. Although a display mechanism or a display mechanism installation plates are different according to sizes or models of the MCC unit, a base and a hinge bracket may be commonly used.
    Type: Application
    Filed: December 12, 2016
    Publication date: September 21, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Minsoo SON
  • ARC ELIMINATOR WITH EARTH CONTACT
    Publication number: 20170271110
    Abstract: The present invention relates to an arc eliminator, and more particularly, to an arc eliminator with an earth contact. An arc eliminator comprises: a housing; an extinguisher installed on the housing; and an earth contact that is installed on the housing and protrudes out from the housing in such a way as to be connected to the ground bus bar provided inside a distribution board when the extinguisher is moved to a first position where the extinguisher is connected to a fixed bus bar provided inside the distribution board, and to be disconnected from the ground bus bar when the extinguisher is moved to a second position where the extinguisher is disconnected from the fixed bus bar.
    Type: Application
    Filed: January 14, 2017
    Publication date: September 21, 2017
    Applicant: LSIS CO., LTD.
    Inventors: Menglei ZHENG, Youngwoo JEONG
  • Apparatus and method for restarting medium voltage inverter
    Patent number: 9768679
    Abstract: An apparatus for restarting a medium voltage inverter is disclosed, wherein the medium voltage inverter can be restarted by estimating a rotor speed when an input power returns from an instantaneous defective state to a normal state, whereby a time to restart the medium voltage inverter can be reduced by a simple configuration to dispense with the need to wait until the rotor speed reaches zero speed.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 19, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Beom Seok Chae, Seung Cheol Choi
  • Main circuit part of vacuum circuit breaker with self-powered temperature sensor assembly
    Patent number: 9766137
    Abstract: The present invention relates to a main circuit part of a vacuum circuit breaker, and more particularly, to a main circuit part of a vacuum circuit breaker with a temperature sensor. The main circuit part of a vacuum circuit breaker with a self-powered temperature sensor assembly includes: a self-powered temperature sensor module; and a support bracket enclosing and supporting the self-powered temperature sensor module.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: September 19, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Woo Jin Park, Min Kyu Seo
  • Add-on communication apparatus attached to cable installment type charging control apparatus and method thereof
    Patent number: 9769741
    Abstract: An add-on communication device attached to a cable-mounted charging control device integrated with a cable assembly for charging an electric vehicle includes a control unit and a plurality of communication modules for communicating with a terminal device. The control unit determines a first communication module for transmitting a message, from among the plurality of communication modules. The control unit determines a second communication module for retransmitting the message, from among the plurality of communication modules excepting the first communication module, when reception of an acknowledgement message indicating normal reception of the message by the terminal device is abnormal.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: September 19, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Seung Woo Choi
  • Electric vehicle charger
    Patent number: 9764651
    Abstract: Provided is an electric vehicle charger. The electric vehicle charger includes a lower case including a front partition wall having a cable penetration cutoff part that is cut to pass in forward and backward directions, an upper case including a front partition wall having a cable penetration cutoff part that is cut to pass in forward and backward directions, a sealing part having at least one portion disposed between the upper case and the lower case, and a cable passing though a portion of the upper case and a portion of the lower case, the cable being coupled between the upper case and the lower case.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: September 19, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Ki Young Moon