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Lsis Co Ltd
Lsis Co Ltd_20131212

Lsis Co Ltd patents


Recent patent applications related to Lsis Co Ltd. Lsis Co Ltd is listed as an Agent/Assignee. Note: Lsis Co Ltd may have other listings under different names/spellings. We're not affiliated with Lsis Co Ltd, we're just tracking patents.

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Frame reception monitoring method in serial communications

The present disclosure relates to a frame reception monitoring method, including: when a plurality of sub-frames constituting a frame is each entered into a reception buffer at certain time intervals, allowing the respective sub-frames to be stored on a temporal buffer; allowing the plurality of sub-frames stored on the temporal... Lsis Co Ltd

Interlock device for preventing close during insertion or withdraw on circuit breaker in switch board

The present disclosure relates an interlock device for preventing insertion or withdrawal of a circuit breaker into or from a switch board having an ON button and an OFF button and including a switch board body provided with a housing and a rail having an interruption hole formed on one... Lsis Co Ltd

Power compensation apparatus and controlling the same

A power compensation apparatus compensates for power of a power system to be allowed to transmit from at least one or more power sources to a load. The power compensation apparatus includes a first system connected to the power system to compensate for active power and reactive power of the... Lsis Co Ltd

Modular multi-level converter

The present disclosure relates a modular multi-level converter (MMC) including two arms including different types of sub modules according to the respective arms, two sub controllers corresponding to the two arms, respectively and configured to separately control the two arms, respectively, and a central controller configured to determine a switching... Lsis Co Ltd

Apparatus for editing graphic objects

Disclosed herein is an apparatus for editing graphic objects. More specifically, disclosed herein is an apparatus for editing graphic objects which searches for objects by using a variety of attributes that each of the objects has and displays the found objects and a list of the found objects. The apparatus... Lsis Co Ltd

Multi-pole molded case circuit breaker with insulation barrier for rotary pin

Provided is a multi-pole molded case circuit breaker (MCCB) with an insulation barrier for a rotary pin, in which an insulation barrier is provided in a rotary pin for inter-phase power transmission to prevent dielectric breakdown. The multi-pole MCCB includes a shaft assembly having a movable contactor and having a... Lsis Co Ltd

Trip mechanism for direct current molded case circuit breaker

Provided is a trip mechanism for DC molded case circuit breaker, in which the insulating distance between the poles increases without any increase in whole product size, thereby reliably providing a trigger output against an over current and a fault current instantaneous breaking required. The trip mechanism includes a trip... Lsis Co Ltd

Photovoltaic inverter

Disclosed herein is a photovoltaic inverter that prevents degradation in the efficiency of photovoltaic generation by applying a reverse voltage of a DC voltage stored in a DC link capacitor to a solar cell array. The photovoltaic inverter includes: a DC link capacitor configured to store a DC voltage output... Lsis Co Ltd

Mechanism coupling structure of molded case circuit breaker

A mechanism coupling structure of a molded-case circuit breaker according to an embodiment of the present disclosure including a shaft to one side of which a movable contactor is coupled, and on a part of which a rotating pinhole is formed in a penetrating manner; a base assembly into which... Lsis Co Ltd

Device of monitoring reactive power compensation system, and method thereof

The present disclosure relates to a device of monitoring a reactive power compensation system to compensate reactive power, the device including a measurement unit configured to acquire voltage data, current data, and a phase angle from each constituent device, a power performance index calculation unit configured to calculate power performance... Lsis Co Ltd

Diagnostic system for electric power equipment

An electric power equipment comprises: a display module; a sensor module for outputting measurement data including a first noise signal measured from inside of the electric power equipment, a second noise signal measured from outside of the electric power equipment, a temperature signal of the electric power equipment, and a... Lsis Co Ltd

Reactive power compensation system and method thereof

The present disclosure relates a reactive power compensation system including a detection unit for acquiring loading state information of a plurality of loads, a reactive power compensation unit for compensating reactive power, and a controller for controlling the reactive power compensation unit to perform flicker compensation or power factor compensation... Lsis Co Ltd

Device for measuring loss in reactive power compensation system

The present disclosure relates to a device for measuring a loss in a reactive power compensation system to compensate reactive power, which includes at least one load connected to a receiving end, a reactive power compensation unit connected to the receiving end and comprising at least one device, at least... Lsis Co Ltd

Simulation apparatus and operating method thereof

A simulation apparatus includes a database configured to a set line parameter for a system line configuring a power system; a parameter error detector configured to compare surveyed data measured in the system line and the line parameter to detect error of the line parameter; a system analysis simulator configured... Lsis Co Ltd

Computing apparatus and operating method thereof

Disclosed is a computing apparatus, which comprises a plug-in profile configured to store a plurality of target source codes that are modularized to perform functions applied to a target device that operates based on a platform; a profile extractor configured to extract at least one target source code out of... Lsis Co Ltd

Reactive power compensation system and method thereof

The present disclosure relates to a reactive power compensation system including a reactive power compensation unit for measuring compensate reactive power, an impedance measurement unit for measuring an impedance value of each of a plurality of loads, and a learning control unit for controlling the reactive power compensation unit based... Lsis Co Ltd

Circuit breaker

A circuit breaker is provided, which includes a cradle having a plurality of cradle terminals, and a breaker main body connected to the cradle and having a plurality of breaker terminals electrically connected to the plurality of cradle terminals, in which each of the plurality of breaker terminals includes a... Lsis Co Ltd

Scada system

Disclosed herein is a SCADA system that can adjust the size of a window added to the whole screen depending on the context of the window. The SCADA system includes a server that acquires data from remote apparatuses for system control and monitoring, and a display device that displays the... Lsis Co Ltd

Electric energy storage apparatus

An electric energy storage apparatus according to an embodiment may include a grid configured to supply first electric energy; a generator configured to supply second electric energy; and an electric energy storage apparatus configured to receive and store at least one of the first electric energy and the second electric... Lsis Co Ltd

Slave device control method

The present disclosure relates to a slave device control method, for transmitting a control message along with group start data and group end data to a slave device by a master device so as to set a start point and an end point of the slave device in a sub... Lsis Co Ltd

Slave device control method

The present disclosure relates a slave device control method including generating the control message including a plurality of input data and transmitting the control message to a specific slave device among a plurality of slave devices, by a master device, extracting input data from a received data start position of... Lsis Co Ltd

Apparatus for predicting power loss of transformer

The present disclosure relates to an apparatus for predicting power loss of a transformer, and more particularly, to an apparatus for predicting power loss of a transformer, which is capable of predicting power loss by comparing temperature data of the transformer with reference data thereof. An apparatus for predicting power... Lsis Co Ltd

Apparatus for managing local monitoring data

The present disclosure relates to an apparatus for managing local monitoring data. The apparatus for managing local monitoring data includes an identification unit configured to identify monitoring data as one of structured monitoring data and unstructured monitoring data using flag information of the monitoring data, a storage unit configured to... Lsis Co Ltd

Current limiting device of circuit breaker

In present disclosure, a movable bar guide portion is formed to protrude toward a movable bar in a shaft having a movable bar, and when a fault current is applied and the movable bar is rotated due to electromagnetic repulsion force, the movable bar and the movable bar guide portion... Lsis Co Ltd

Adjustable thermal trip mechanism for circuit breaker

An adjustable thermal trip mechanism for a circuit breaker is provided which can improve the reliability of over-current tripping by minimizing an influence upon thermal tripping even if an assembly error such as skewing or twisting occurs during assembly of bimetallic strips. The adjustable thermal trip mechanism for the circuit... Lsis Co Ltd

Battery control circuit for power generation system using renewable energy

The battery control circuit includes: a battery; a DC power supply unit; a first DC-DC converter providing a current path in a first direction of supplying the DC energy from the DC power supply unit to the battery, and a current path in a second direction of discharging the DC... Lsis Co Ltd

Control circuit for electric leakage circuit breaker

A control circuit for an electric leakage circuit breaker, capable of preventing an error in determining an electric leakage generation due to an offset voltage of an input amplifier, including, a zero phase current transformer configured to detect a zero phase current on a circuit as a leakage detection signal,... Lsis Co Ltd

Trip control circuit for circuit breaker

The present invention provides a trip control circuit for a circuit breaker capable of breaking a circuit when a fault current occurs due to a DC current component, as well as an AC current. The trip control circuit comprises a current transformer that has a core allowing a circuit to... Lsis Co Ltd

Apparatus for detecting malfunction of relay

The present disclosure relates to an apparatus for detecting malfunction of a relay, which includes a temperature determination unit configured to determine whether or not a relay resistor is overheated based on a resistance temperature of the relay resistor being connected to a relay; a charging voltage determination unit configured... Lsis Co Ltd

Control device for static var compensator and control method thereof

A control device for a static var compensator (SVC) includes: a monitoring control unit configured to generate an error presence/absence signal based on a control signal inputted from a system controller; a valve signal processing unit configured to generate a valve state signal based on databack signals respectively inputted from... Lsis Co Ltd

Damping apparatus and damping converter system

The present disclosure relates to a damping apparatus of a converter system, which compensates an input voltage reference being transmitted to a converter to damp an output current of a harmonic filter that is connected between an output end of the converter and a system, including a voltage reference compensation... Lsis Co Ltd

Apparatus for controlling multiple inverters and inverter system including the same

The present disclosure relates to an apparatus for controlling multiple inverters and an inverter system including the same. The apparatus according to the present disclosure determines a motor having the smallest operation time among motors which are not being operated as a main motor to thereby transmit a running reference... Lsis Co Ltd

System for controlling power device

The present disclosure provides a system for controlling a power device including one or more power elements, one or more drive modules configured to provide a drive signal with respect to the one or more power elements through a signal line and provided with a first wireless module, and an... Lsis Co Ltd

10/26/17 / #20170305284

Charge system for electric vehicle and charging electric vehicle

Disclosed herein is a charging system for an electric vehicle. The charge system includes: a power conversion system configured to convert AC power into DC power or convert DC power into AC power; a main switch unit having an end connected to the power conversion system; and a plurality of... Lsis Co Ltd

10/26/17 / #20170305291

Apparatus for controlling electric vehicle charging system

Disclosed herein is an apparatus for controlling an electric vehicle charging system. The apparatus charges each of a plurality of batteries up to a first preset voltage lower than a full charge voltage by voltage control, charges the plurality of batteries up to a predetermined percentage of a second preset... Lsis Co Ltd

10/26/17 / #20170307450

Apparatus for correcting of temperature measurement signal

The present invention relates to an apparatus for correcting a temperature sensing signal of an IGBT temperature sensing device which outputs only a temperature sensing signal having a voltage value equal to or higher than a preset voltage value, by using an output limiting diode. The apparatus includes: a calculating... Lsis Co Ltd

10/26/17 / #20170308426

Apparatus for controlling inverter

An apparatus for controlling an inverter includes a volatile, first storage part; a nonvolatile, second storage part; and a control part configured to store data related to the status of the inverter in the first storage part when the inverter is driven and configured to select some of the data... Lsis Co Ltd

10/26/17 / #20170309414

Draw in and out type circuit breaker

Disclosed is a draw in and out type circuit breaker. In the draw in and out type circuit breaker, at least one guide slot is provided in a slide plate, and thus, a clip moves to a test position, a connected position, or a disconnected position with being fitted into... Lsis Co Ltd

10/26/17 / #20170310208

Apparatus for controlling operation of power converstion device

The present invention relates to an apparatus for controlling the operation of a power conversion device including a rectifier part, an initial charging part, a DC-link part and an inverter part. The apparatus includes: a control part configured to drive a relay connected in parallel to an initial charging resistor... Lsis Co Ltd

10/26/17 / #20170310250

Disconnection detection apparatus of sinusoidal wave signal

Disclosed is a disconnection detection apparatus of a sinusoidal wave signal. The disconnection detection apparatus of the present disclosure converts a first sinusoidal wave and a second sinusoidal wave into absolute values, respectively, and determines that disconnection occurs when a value of the first sinusoidal wave is less than a... Lsis Co Ltd

10/26/17 / #20170310793

Hardware protocol stack with user-defined protocol applied thereto and applying user-defined protocol to hardware protocol stack

The present disclosure relates to a hardware protocol stack, and more particularly, to a hardware protocol stack to which a user-defined protocol is applicable. The present disclosure compares header information stored in a register unit with header information of a received frame, and determines a processing of the received frame... Lsis Co Ltd

10/19/17 / #20170299443

Parameter determining estimating temperature of switching element of inverter

A parameter determining apparatus for estimating temperature of a switching element of an inverter is disclosed. The parameter determining apparatus of the present disclosure includes an inverter unit including a power semiconductor module configured with at least one or more switching elements, and a control unit configured to determine an... Lsis Co Ltd

10/19/17 / #20170299637

Analog signal detecting circuit

The analog signal detecting circuit comprises a reference voltage generator that outputs a plurality of reference voltages, the number of the reference voltages being varied depending on a voltage width between a minimum voltage value and a maximum voltage value of an analog signal; a plurality of comparators that compares... Lsis Co Ltd

10/19/17 / #20170301498

Circuit breaker having closing resistor

Disclosed herein is a circuit breaker having a closing resistor, which is capable of preventing impact caused when the circuit breaker is opened and closed from being transferred to peripheral structures. The circuit breaker having a closing resistor includes a fixed part having a fixed contact, a movable part having... Lsis Co Ltd

10/19/17 / #20170302163

Apparatus for controlling solar light voltage

The present invention relates to an apparatus for controlling a solar light voltage, which is capable of decreasing an output stage voltage of an AC EMC filter by connecting a load to an output stage of the AC EMC filter. The apparatus includes: a DC filter configured to receive a... Lsis Co Ltd

10/12/17 / #20170294751

Downloader gender case

A downloader gender case is disclosed. The download gender case according to the present invention comprises: a fixed cover for fixing a substrate, configured to surround a part of the substrate and the periphery of a header and formed with a first through hole through which the header is opened;... Lsis Co Ltd

10/12/17 / #20170294851

Method for controlling inverter system

The present invention relates to a method for controlling an inverter system including a plurality of inverters connected in parallel. The method includes: comparing a target power amount with an amount of power to be supplied by the predetermined number of inverters; determining the number of inverters to be driven,... Lsis Co Ltd

10/12/17 / #20170294855

Inverter

The present disclosure relates to an inverter, and more specifically to an inverter that can be restarted stably by determining whether to restart it when power is supplied after a failure has occurred in the inverter due to a fault in the main supply.... Lsis Co Ltd

10/12/17 / #20170295233

Apparatus for relaying data transmission in scada system

Disclosed herein is an apparatus for relaying data transmission in a SCADA server. The apparatus includes: a communications unit configured to receive a data transmission request from the host server and transmit a target data request by the host server to the host server; a update unit configured to update... Lsis Co Ltd

10/12/17 / #20170295262

Inverter system

Disclosed is an inverter system. A control part of the inverter system includes a control unit configured to set a communication protocol in association with a control unit of the power part, and transmit control data and receive power data according to the set communication protocol, and a power part... Lsis Co Ltd

10/05/17 / #20170285891

Method of providing monitoring screen composition functions

The present disclosure relates to a method of providing monitoring screen composition functions. A method of providing monitoring screen composition functions for controls of a system according to an embodiment of the present disclosure includes receiving a type of a monitoring screen which a user intends to generate; receiving characteristics... Lsis Co Ltd

10/05/17 / #20170286235

Method of managing db between duplex ems server

A method of managing databases (DBs) in duplex servers includes: updating a DB in the backup server to a first version; transmitting a list of name keys in the backup server to the active server; transmitting name keys that are identical between the active server and the backup server to... Lsis Co Ltd

10/05/17 / #20170287110

Remote management system supporting n-screen function

The present disclosure relates to a remote management system supporting an N-screen function. A remote management system according to one embodiment of the present disclosure includes a graphic editing unit configured to create a first file including a plurality of layers corresponding to resolutions of plurality of devices, and a... Lsis Co Ltd

10/05/17 / #20170287659

Vacuum interrupter for a vacuum circuit breaker

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... Lsis Co Ltd

10/05/17 / #20170288395

Current circuit breaker

Disclosed herein is a current circuit breaker that protects a semiconductor module by using fast switches to block a current. The current circuit breaker includes: a first switch configured to be opened upon a fault current being generated; a second switch connected to the first switch and configured to be... Lsis Co Ltd

10/05/17 / #20170288405

Hybrid power storage apparatus

A hybrid power storage apparatus according to one embodiment of the present disclosure includes a battery configured to store first electric power supplied to an electric power system and second electric power supplied therefrom; an electric power conversion unit configured to convert the first electric power into an alternating current... Lsis Co Ltd

10/05/17 / #20170288572

Oil type phase shift transformer for medium voltage inverter system

Disclosed is a phase shift transformer for supplying voltage to a plurality of unit power cells in a medium voltage inverter system. The phase shift transformer according to the present invention comprises a first bushing arranged by the side of a tank and connected to a first winding to apply... Lsis Co Ltd

10/05/17 / #20170288573

Apparatus for balancing voltages of dc link capacitor in inverter

An apparatus for balancing a voltage of a direct current (DC) link capacitor of an inverter is provided. The apparatus of the present disclosure includes a switching unit connected to a node (a reference point) between the first and second resistors, which are connected in series to each other, and... Lsis Co Ltd

10/05/17 / #20170288591

Apparatus for correcting current reference

The present disclosure relates to an apparatus for correcting a current reference, and more particularly, to an apparatus for correcting a current reference including a calculation unit configured to set a first torque reference section and a second torque reference section using candidate values of a correction factor that corrects... Lsis Co Ltd

10/05/17 / #20170288964

Telecommunications system for programmable logic controller

A telecommunications system for a programmable logic controller (PLC) includes: a master module comprising a transmitter and a receiver; one or more slave modules configured to receive signals transmitted from the transmitter and transmit signals to the receiver in response to the transmitted signals; a signal conversion module configured to... Lsis Co Ltd

10/05/17 / #20170289212

Human machine interface system and the operating the same

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... Lsis Co Ltd

10/05/17 / #20170289248

Energy management server, energy management system and the operating the same

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;... Lsis Co Ltd

09/28/17 / #20170276737

Slave module for monitoring electric system

Disclosed herein is a slave module for monitoring an electric system. The slave module includes: a data transmitting/receiving unit configured to receive request data from the master module and transmit response data to the master module via the serial bus; a data converting unit configured to convert the request data... Lsis Co Ltd

Patent Packs
09/28/17 / #20170277155

Supervisory control and data acquisition system and data engineering method thereof

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... Lsis Co Ltd

09/28/17 / #20170277170

Hmi system

The present disclosure relates to a human machine interface (HMI) system easily applicable to each of a plurality of control management systems. An HMI system according to one embodiment of the present disclosure includes a module generation unit configured to generate an interface module of a control management system selected... Lsis Co Ltd

09/28/17 / #20170278319

Fault diagnosis brake of train and automatic train operation equipment due to the reduction braking performance using the same and fault diagnosis brake of train

The present invention relates to a fault diagnosis apparatus for a brake of a train, an automatic train operation system operated due to degradation of braking performance using the same, and a fault diagnosis method for the brake of the train. In particular, the present invention is directed to determining... Lsis Co Ltd

09/28/17 / #20170278487

Method for displaying monitoring viewer in hmi system

Disclosed herein is a method for displaying a monitoring viewer in an HMI system. The method includes, upon receiving a request to display a monitoring viewer from a user, acquiring screen data to be displayed in the monitoring viewer; displaying a control area of the monitoring viewer on a display;... Lsis Co Ltd

09/28/17 / #20170279886

Method of synchronizing user setting data among multiple centers

Disclosed herein is a method of synchronizing data among multiple EMS centers. The method may include updating user setting data by a client in a main center; transmitting the user setting data from the main center to a secondary center; and synchronizing the user setting data between the main center... Lsis Co Ltd

09/21/17 / #20170271110

Arc eliminator with earth contact

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... Lsis Co Ltd

09/21/17 / #20170271854

Motor control center unit

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... Lsis Co Ltd

09/14/17 / #20170259836

Central processing unit module for processing railway signal

The present disclosure relates to a CPU module for processing railway signals, and more specifically to a CPU module for processing railway signals that controls operation timing of a first comparator, a signal processing unit and a second comparator.... Lsis Co Ltd

09/14/17 / #20170263109

Apparatus for data processing

The present disclosure relates to a data processing apparatus. The data processing apparatus includes: at least one data processor configured to collect the data from the RTUs and check alarm data associated with the collected data; a first spooler configured to receive the alarm data output from the data processor... Lsis Co Ltd

09/14/17 / #20170263389

Interlock device of withdrawable arc eliminator

The present invention relates to an interlock device of a withdrawable arc eliminator, and more particularly, to an interlock device of a withdrawable arc eliminator capable of preventing insertion or withdrawal of an arc eliminator applied to an electrical panel, in a closed state of the arc eliminator.... Lsis Co Ltd

09/14/17 / #20170263390

Arc eliminator

An arc eliminator includes a housing having a space formed therein and including an opening, an arc extinguishing part installed in the housing and including a moving rod disposed to be movable to the space, an indicator rotatably installed within the housing and seen through the opening, and an indicator... Lsis Co Ltd

09/14/17 / #20170264459

Communications device having relay

A communications device includes a master unit and a block of slave units including a plurality of slave units control by the master unit. Each of the slave units include first and second ports to which different communications lines are connected, respectively, and a relay disposed between the first port... Lsis Co Ltd

09/07/17 / #20170254728

Data logging apparatus

A data logging apparatus stores communications data transmitted/received between a first apparatus and a second apparatus as log data, determines whether an event occurs based on the communications data, and stores log data within predetermined time periods before and after the time point at which the event has occurred, i.e.,... Lsis Co Ltd

09/07/17 / #20170255175

Server apparatus in energy management system and operating thereof

The present invention relates to an energy management system. The energy management system includes: a client device; and a server. The server includes: a communication unit configured to communicate with the client device; a processor configured to perform a process requested by the client device; a storage unit in which... Lsis Co Ltd

09/07/17 / #20170255607

Method of controlling data display device

Disclosed herein is a method of controlling data display device. The method includes: loading a monitoring view to initialize it; determining whether to display a tabular view; setting a tabular module if it is determined that the tabular view is to be displayed; displaying the tabular view according to set... Lsis Co Ltd

Patent Packs
08/31/17 / #20170248660

Apparatus for detecting defect of electric power system

An apparatus for detecting a defect of an electric power system according to one embodiment of the present disclosure includes a first state signal output unit for outputting a first state signal corresponding to a magnetic force generated at a periphery of a line, a second state signal output unit... Lsis Co Ltd

08/31/17 / #20170248982

Electric power system

Disclosed herein is an electric power control system including a communication apparatus, a server, and a client, wherein the communication apparatus includes a communication unit operative to communicate with the client and server included in the electric power system to relay the service request received from the client to the... Lsis Co Ltd

08/31/17 / #20170250044

Enclosed type electromagnetic switch having status indication function

The present invention relates to an enclosed type electromagnetic switch having a status indication function, and more particularly, to and enclosed-type electromagnetic switch having a status indication function that can show the electromagnetic switch's status on an enclosure.... Lsis Co Ltd

08/31/17 / #20170250526

Motor control center

A motor control center (MCC) includes a cabinet, a bus located within the cabinet, a partition vertically partitioning the inside of the cabinet, and an MCC unit located on the partition and including a clip connected to the bus, a first guide located on a lower surface of the MCC... Lsis Co Ltd

08/24/17 / #20170241676

Cooling power converter

The cooling apparatus includes: a compressor configured to generate compressed air; first and second vortex tubes configured to generate cold air based on the compressed air generated from the compressor; a first valve installed between the compressor and the first vortex tube; a second valve installed between the compressor and... Lsis Co Ltd

08/24/17 / #20170243710

Instant trip mechanism for molded case circuit breaker

Disclosed embodiments include an instant trip mechanism for a molded case circuit breaker. In some embodiments, the mechanism includes an adjustment dial to set a current for an instant trip operation; an instant bar provided with an upper portion contactable with the adjustment dial, a shaft portion serving as a... Lsis Co Ltd

08/24/17 / #20170244314

Method for controlling three phase equivalent voltage of multilevel inverter

Provided is a method of controlling a three phase equivalent voltage in a multilevel inverter including sensing a state of each of power cells of the multilevel inverter to determine whether or not failure occurs at each of the power cells, bypassing power cells which are determined as being failed... Lsis Co Ltd

08/24/17 / #20170244335

Inverter

Disclosed herein is an inverter. The inverter includes a base provided with a heat dissipation part, a main board disposed on the base to output an input power along an independent power flow through a rectification part and a inverter part, and a control board fixed to be electrically connected... Lsis Co Ltd

08/24/17 / #20170244399

Method and generating pwm signal

Disclosed herein are a method and an apparatus for generating a random PWM voltage reference signal for driving an inverter, which can more simply generate random position PWM (RPPWM) in which a position of an active vector is changed to achieve the same effect as when a switching frequency is... Lsis Co Ltd

08/24/17 / #20170244404

Fault detector for anti-parallel thyristor

A fault detector for an anti-parallel thyristor includes: a power supply unit configured to supply power to the first and second thyristors; a first current sensor configured to output a first current measurement value that flows through the first thyristor; a second current sensor configured to output a second current... Lsis Co Ltd

08/24/17 / #20170245026

Telemetry system

A telemetry system includes: a plurality of meters; a data reader configured to acquire meter reading information for each of the meters; a transmitter configured to receive the meter reading information for each of the meters acquired through the data reader and transmit a corresponding Bluetooth beacon signal; a receiver... Lsis Co Ltd

08/24/17 / #20170245387

Motor drive unit

Disclosed herein is a motor drive unit. The motor drive unit includes a base part; a middle base part disposed above the base part; a heat discharging part mounted on the base part and disposed under the middle base part to slide on the middle base part, wherein an area... Lsis Co Ltd

08/24/17 / #20170245403

Cooling system for two-dimensional array power converters

Disclosed herein is a cooling system for two-dimensional array power converters. The cooling system includes: a plurality of power converters arranged in two-dimension; a compressor configured to generate compressed air; vortex tubes each installed in the respective power converters, the vortex tubes configured to generate low-temperature air based on compressed... Lsis Co Ltd

08/17/17 / #20170234914

System for monitoring electric energy

A system for monitoring electric energy amount according to one embodiment of the present disclosure includes an electric energy system including one or more loads receiving electric energy through an external electric energy source and a renewable energy generator, a home server for receiving information of a first electric energy... Lsis Co Ltd

08/17/17 / #20170236663

Bypass switch

A bypass switch includes: a casing; a vacuum interrupter disposed inside the casing, the vacuum interrupter being disposed such that a movable contact is movable to a fixed contact; a first fixing bus-bar fixed to the casing; a second fixing bus-bar fixed to the casing to be spaced apart from... Lsis Co Ltd

08/17/17 / #20170236668

Auxiliary relay of electronic contactor

Disclosed embodiments relate to an auxiliary relay of an electronic contactor. In some embodiments, an auxiliary relay has its conducting state controlled by a plurality of lead switches, in a non-exposed state of contact parts to the outside. This may prevent dust or foreign materials from clinging to the contact... Lsis Co Ltd

08/17/17 / #20170236671

Multi-pole molded case circuit breaker

The present invention relates to a multi-pole molded case circuit breaker, more particularly, to a multi-pole molded case circuit breaker having a safety device (with an isolation function) which prevents a manipulation handle from being moved to an off-position when a fusion occurs on a contact portion.... Lsis Co Ltd

08/17/17 / #20170236672

Fuse case and case cover of vacuum contactor

A fuse case and a case cover of a vacuum contactor including a truck, a main circuit unit, and a front cover covering a front side of the main circuit unit include a fuse connected to an upper terminal of the main circuit unit and blowing, when a fault current... Lsis Co Ltd

08/03/17 / #20170221664

Relay

The relay may include: a stationary contact having a first stationary contact and a second stationary contact; a movable contact moveable to a first position to contact the first stationary contact, and a second position to be separated from the first stationary contact; a conductive connector configured to always electrically... Lsis Co Ltd

08/03/17 / #20170222428

Magnetic coil driving circuit for magnetic contactor

The magnetic coil driving circuit of the magnetic contactor according to the present invention comprises a semiconductor switch configured to open or close a circuit for magnetizing or demagnetizing a magnetic coil; a pulse width modulation unit configured to output a pulse signal as a control signal for turning on... Lsis Co Ltd

07/27/17 / #20170210595

Method for controlling operation of elevator

The present invention relates to a method for controlling an operation of an elevator, which is capable of moving the elevator to a near floor by using an auxiliary power supply such as a battery in an emergency situation where a commercial power supply cannot be used, while minimizing power... Lsis Co Ltd

07/27/17 / #20170213661

Interlock apparatus of ring main unit

An interlock apparatus of a ring main unit is provided. The interlock apparatus may be provided between a plurality of switches which are included in the ring main unit and are adjacent to each other, and when one switch is controlled to a closed state and is connected to a... Lsis Co Ltd

07/27/17 / #20170214315

Control apparatus and method in static var compensator system

A control apparatus in a static VAR compensator (SVC) system includes a plurality of current supply units for supplying phase currents configuring three-phase current of a power system, a plurality of current sensors for measuring the phase currents, and a controller for determining whether unbalance occurs in the three-phase current... Lsis Co Ltd

07/27/17 / #20170214331

Control device in hvdc system and operating thereof

A control device in a high voltage direct current (HVDC) system is provided. The control device includes a communication unit performing communication with a component in the HVDC system; and a control unit enabling the communication unit to receive, from the component, data on an available state of the component,... Lsis Co Ltd








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