Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Seoul Viosys Co., Ltd.

Samsung Display Co., Ltd.

Seoul National University

Sang Cheol Shin

Kang Ho Jeong

Ji Woong Jang

Ki Jong Lee

Jae Hak Jeong

Ji Won Kim

Young Seul Lim

Beom Sik Kim

Myung Ho Kim

Ki Young Jang

Jong Kyong Lim

Yoo Jong Lee

Suk Hyun Lim

Seong Min Lee

Woong Ki Jung

Han Geun Jang

Je Hwan Lee

Jin Hwan Jung

Woo Yong Jeon

Byeong Cheol Ju

Jae Hong Park

Kwang-chul Jung

Hyeok Jin Lee

Oh Jeong Kwon

Sang-uk Lim

Sung-Jae Yun

Joo Young Yoon

Hyun Koo Lee

Jung Hong Joo

Jung Ik Ha

Ho Tae Chun

Kyung Hye Park

Jiang Shuai

Joo Ae Youn

Hyun-Cheol Moon

Hyeon Gyu Choi

Yong Jae Lee

Seong Jin Lee

In Ho Kim

Jong Rack Kim

Dong Min Shin

Jeong Yun Lee

Jae Seon Yi

Woong Ki Jeong

Jin Myeong Yang

Jun Hee Park

Heon Young Kwak

Dong Hoon Park

Ik Hwan Ko

Youn Sik Lee

Jae Hoon Shim

Jae Hoon Sim

In Pil Yoo

Nae Chun Park

Youn Sook Lee

Sang Hwan Byun

Choul Woo Jung

Jun Hwan Kim

A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.

Motor-driving apparatus

An air purification module for purifying air includes a photocatalyst filter and a light source unit sequentially arranged in a selected direction. The light source unit is spaced apart from the photocatalyst filter to provide light to the photocatalyst filter and includes a substrate and a light source disposed on the substrate. The substrate includes at least one aperture to control a flow channel and a flow velocity of air so as to improve air purification effects through the photocatalyst filter when the air flows from the substrate towards the photocatalyst filter.

Air purification module and refrigerator comprising the same

An air purification module comprises a housing having an interior space provided with an air inlet and an air outlet, and an axial type blowing fan, mounted in the housing, for moving air from the air inlet to the air outlet. The air purification module further includes an air purifying unit, provided on a flow path of the air, for purifying the air and a guide for reducing the flow rate of the air between the blowing fan and the air purifying unit. The air purifying unit includes a filter provided between the blowing fan and the air outlet and a light source unit for providing light to the filter.

A battery charging system includes a first inverter including first switching elements and DC and AC terminals connected to the battery and a first end of the windings of a motor, respectively; a second inverter including second switching elements and DC and AC terminals connected to the battery and a second end of the windings, respectively; third switching elements each having a first end connected to the second end of the windings and a second end connected to each other; a charging capacitor provided between the second end of the third switching elements and a negative terminal of the battery, and to which a DC charging voltage is applied for charging the battery; a fourth switching element connected in series with the charging capacitor between the second end of the third switching elements and the negative terminal; and a controller configured to control the first to fourth switching elements.

Vehicle battery charging system using motor driving system

A fluid processing module includes a main body having a flow channel extending in a first direction therein and allowing a fluid to flow therein, an absorption filter disposed perpendicular to the first direction inside the main body, a photocatalyst filter disposed parallel to the first direction inside the main body, and a light source unit disposed inside the main body and emitting light towards the photocatalyst filter. The fluid flows at a first flow rate in the region of the flow channel having a first cross-sectional area. The fluid flows at a second flow rate in the region of the flow channel having a second cross-sectional area. The photocatalyst filter has effective deodorizing efficiency when the fluid flows at the second flow rate.

Fluid processing module and storage device comprising fluid processing module

A motor driving apparatus of driving a motor including a plurality of windings respectively corresponding to a plurality of phases is disclosed. The motor driving apparatus include a first inverter including a plurality of first switching elements and connected to a first end of each of the windings, a second inverter including a plurality of second switching elements and connected to a second end of each of the windings, and a controller configured for controlling ON/OFF states of the first switching elements and the second switching elements based on a required output of the motor, wherein the first inverter may be connected to a first voltage source, the second inverter may be connected to a second voltage source, and the first voltage source and the second voltage source may have different grounds.

Motor driving apparatus

A motor driving apparatus includes a first motor including first windings respectively corresponding to phases, a second motor including second windings respectively corresponding phases, a first inverter including first switching elements and connected to a first end of each of the first windings, a second inverter including second switching elements, a first changeover switch including third switching elements respectively connected to a second end of each of the first windings at one end and connected to each other at the other end, a second changeover switch including switches selectively connecting the second inverter with the second end of each of the first windings or the second inverter with a first end of each of the second windings, and a controller configured for controlling the states of the first switching elements, the second switching elements, the third switching elements and the switches based on preset conditions.

Motor driving apparatus and method

A system for charging a battery for a vehicle using a motor driving system that operates a motor having a plurality of windings is disclose. The system includes a first inverter having a plurality of first switching elements, a DC terminal connected to the battery, and an AC terminal connected to one terminal of the plurality of windings, a second inverter having a plurality of second switching elements, a DC terminal selectively short-circuited/opened with the DC terminal of the first inverter, and an AC terminal connected to the other terminal of the plurality of windings, and a controller configured to control an electric connection state between the DC terminals of the first inverter and the second inverter and an open/short-circuited state of the first switching elements and the second switching elements.

System for charging battery for vehicle using motor driving system

An inverter driving apparatus includes an inverter including a plurality of legs corresponding to a plurality of phases respectively, a gate driver outputting a pulse width modulation control signal for switching the transistor provided in the leg, a variable resistor circuit connected to a gate end of the transistor, and a switching speed control circuit determining a switching state of the transistor based on the pulse width modulation control signal, adjusting a resistance value of the variable resistor circuit according to the temperature of the transistor based on the determination result, and controlling the switching speed of the transistor.

Inverter driving apparatus and method of controlling the same

A motor driving apparatus includes an inverter that includes a switching element connected between either terminal of a battery and a thermistor insulated from the switching element and that drives a motor through the switching element, a resistor connected between a sensing node to which one end of the thermistor is connected and a terminal of a low source voltage, and a motor controller configured for controlling a relay connected between the battery and the switching element based on a voltage of the sensing node.

Motor driving apparatus and method for alleviating burn-out of the same

A motor driving apparatus which drives a motor including a plurality of winding portions corresponding to a plurality of phases, respectively, includes a motor including a plurality of winding portions corresponding to a plurality of phases, respectively, a first inverter including a plurality of first switching elements and electrically connected to a first end of each of the winding portions, a second inverter including a plurality of second switching elements and electrically connected to a second end of each of the winding portions, a plurality of third switching elements including first ends electrically connected to the second ends of the plurality of winding portions, respectively, and second ends electrically connected to each other, and a controller.

An electrified vehicle having a first inverter having a DC terminal and a plurality of legs respectively connected to one end of each of a plurality of coils of a motor, a second inverter connected to the DC terminal, and including a plurality of legs connected to the other ends of the plurality of coils, respectively, a plurality of transfer switches respectively having one end connected to a neutral terminal for the plurality of coils and the other end connected to the other end of each coil, an overvoltage protection circuit including a clamping switch, a resistor, and a capacitor, and connected to the neutral terminal and the DC terminal, and a controller controlling a turned-on state of the plurality of transfer switches according to the motor driving mode. When the motor is driven, the controller controls a turned-on state of the clamping switch.

Electrified vehicle and method of controlling same

Growing community of inventors

Gyeonggi-do, South Korea

Sang Cheol Shin