Hyundai Motor Company

Samsung Electronics Co., Ltd.

Kia Motors Corporation

Samsung Electro-mechanics Co., Ltd.

Kia Corporation

Seoul National University

Lg Electronics Inc.

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Myongji University Industry and Academia Cooperation Foundation

Haenasoft Company, Limited

Jong Pil Kim

Woo Young Lee

Gun Woo Moon

Don Sik Kim

Tae Won Heo

Dong Joong Kim

Sang Cheol Bong

Jin Young Yang

Dae Woo Lee

Chong Eun Kim

In Yong Yeo

Si Hun Yang

Ji Han Lee

Dong Wook Lee

Ki Bum Park

Hak Ryong Kim

Woo Young Choi

Seok Joon Kim

Gyu Yeong Choe

Byeong Cheol Song

Jin Myeong Yang

Byung Gook Park

Chul Min Park

Jung Han Lee

Youn Sik Lee

Hyoung Soo Ko

Byoung-Gi Kim

Seung Bum Hong

Kihwan Lee

Kyu Min Cho

Woncheol Jeong

Sang Wan Kim

Jae Young Song

Woo Jin Lee

Sot Eum Seo

Young Jin Kim

Jaehyuk Choi

Dong Seong Oh

Byoung Kuk Lee

Min Jung Kim

Yoon Cheol Jeon

Sam Yong Kim

Hee Kwang Lee

Jae Eun Cha

Han Shin Youn

Jong Eun Byun

Sung Hee Kang

Min Seong Choi

Beom Soo Kim

Seong Wook Choi

Min Kook Kim

Sang Chan Jeong

Hyun Ki Cho

Ji Su Lee

Sang Joon Ann

Dong Hwi Kim

Ki Hwang Kim

Yong Hyeon Cho

Sae Kwon Chang

Do Heung Na

Ju Man Yoon

Jung Hyun Lee

Byung Kwon Lee

Sam Gyun Kim

Myung Hyun Sung

Wook Hyun Kwon

Mi Jin Kim

Tae Young Ahn

June Young Lee

Jae Il Baek

Sung Rang Kong

Ji Won Hong

Kang Hyun Yi

Jae Bum Lee

Young Do Kim

In Ho Cho

So Dam Baek

A power supply system for an aircraft and a control method thereof are provided. The power supply system of the aircraft includes a fuel cell configured to generate electrical energy, a converter device configured to supply a voltage generated by the fuel cell to a first motor device for driving the aircraft through a first output terminal and switch a connection with the fuel cell depending on a predetermined driving mode, a battery configured to supply the voltage to a second motor device for driving the aircraft through a second output terminal, the second output terminal being connected with an output node of the fuel cell, and a processor configure to control a connection between the fuel cell and the converter device depending on the driving mode.

Power supply system of aircraft and control method thereof

A power supply system of an aircraft includes a fuel cell that generates electrical energy, a converter device including a mode switch device that supplies power to a first motor device through a first output terminal and switches a connection between an output node of the fuel cell and the first output terminal, a first battery device that supplies a voltage from a first battery to a second motor device through a second output terminal and connects the second output terminal with the first output terminal under control of the mode switch device, and a processor that controls the mode switch device to enter an emergency mode when detecting an error in the converter device or the first battery device and connects the first output terminal with the second output terminal.

The present disclosure provides a semiconductor device with improved element performance and reliability. The semiconductor device includes a lower insulating layer, a fin-shaped insulating layer that is on the lower insulating layer and extends in a first direction, a field insulating layer that is on the lower insulating layer and extends in the first direction, a plurality of gate structures that are on the fin-shaped insulating layer and include a gate electrode intersecting the fin-shaped insulating layer, a source/drain region that is on the fin-shaped insulating layer and is between the gate structures, and an active pattern that is on the fin-shaped insulating layer and penetrates the gate electrode and is electrically connected to the source/drain region, where the gate electrode extends in a second direction intersecting the first direction.

Field-effect transistors including a lower insulating layer

A refrigerator is configured to supply cool air to a refrigerating compartment, a freezing compartment, and an ice-making compartment by a single evaporator. A cool air passage for the ice-making compartment for supplying cool air to the ice-making compartment is configured to supply the cool air to an upper space in a cool air passage for the freezing compartment, which supplies cool air to the refrigerating compartment and the freezing compartment, through an upper supply passage. Accordingly, since additional cool air is supplied to the cool air passage for the freezing compartment by using the upper supply passage, sufficient cool air is supplied to the refrigerating compartment and the freezing compartment by the single evaporator.

Refrigerator

An optical imaging system includes a first lens, a second lens, and a third lens disposed in order from an object side. The optical imaging system satisfies 1.2 mm<TTL<2.0 mm and 0<f3/f<1.0, where TTL is a distance from an object-side surface of the first lens to an imaging plane, f is a focal length of the optical imaging system, and f3 is a focal length of the third lens.

Optical imaging system

The present invention discloses a loading unit which loads the target web site after receiving a URL of a target web site; an action design unit which makes the user arbitrarily plan and arbitrarily set pre-determined work to extract target data from the target web site; an executing unit which consistently arranges the pre-determined work arbitrarily planned through the action design unit, and performs a designated event; an importing unit which extracts target data through the event work and presents them to a user.

System for selectively importing web data by arbitrarily setting action design

A converter for a vehicle including an inductor which includes at least one coil, a core including a first region having an annular planar shape, around which the at least one coil is wound, and a second region having at least one first through-hole, a case accommodating the at least one coil and the core and including at least one cooling rod inserted into the at least one first through-hole, and a fixing bolt fastened to the at least one cooling rod exposed through the at least one first through-hole to fix the core to the case.

Converter for vehicle

Disclosed is a power factor correction circuit including a plurality of legs connected in parallel and each leg including two switching devices connected in series, a plurality of inductors, each inductor having one terminal connected to an interconnection node of the two switching devices in a corresponding one of the plurality of legs, and a controller configured to control on/off states of the switching devices of the plurality of legs in a pulse width modulation manner such that each of the inductors of the plurality of inductors is built up twice or more in one switching period of the switching devices when an alternating current (AC) voltage is input to the other terminal of each inductor of the plurality of inductors.

Power factor correction circuit capable of performing bidirectional power transfer and charger including the same

A united converter apparatus and an operating method thereof are disclosed. The united converter apparatus includes a high-voltage charger charging a high-voltage battery, using a commercial power and a low-voltage charger charging a low-voltage battery, using the high-voltage battery. The high-voltage charger includes a voltage level adjustment device boosts a voltage of the commercial power to apply the boosted voltage to the high-voltage battery and drops a high voltage applied from the high-voltage battery to apply the dropped voltage to the low-voltage charger.

United converter apparatus and operating method thereof

A power conversion system for vehicles is provided. The system includes a switching circuit having first input/output terminals, second input/output terminals and a plurality of switching elements connected between the first input/output terminals and the second input/output terminals. A first energy storage device is connected to the second input/output terminals and has a preset charging/discharging voltage. A first voltage conversion circuit converts power output from the first input/output terminals to output a voltage less than the voltage of the first energy storage device. A second energy storage device is charged/discharged with the output voltage of the first voltage conversion circuit. A controller controls open/short-circuit states of the switching elements based on whether the first energy storage device is being charged and whether the vehicle is traveling. When the first energy storage device is being charged, AC charging power is provided to the first input/output terminals from outside of the vehicle.

Power conversion system for vehicles and control method thereof

A method for manufacturing a semiconductor device includes performing a first ion implantation process on a substrate to form a lower dopant region in the substrate, patterning the substrate having the lower dopant region to form active patterns, and performing a second ion implantation process on the active patterns to form an upper dopant region in an upper portion of each of the active patterns. The lower and upper dopant regions have a same conductivity type.

Methods for manufacturing semiconductor devices

A wireless power reception apparatus including a bridgeless rectifier in a wireless power transfer (WPT) system for an electric vehicle (EV) may include: a bridgeless rectifier configured to rectify power transferred from a reception coil and to supply a direct current to a battery mounted in the EV; and a controller configured to control operation of the bridgeless rectifier. The bridgeless rectifier may include at least one switch and at least one diode connected to the at least one switch.

Power reception apparatus having bridgeless rectifier in electric vehicle wireless power transfer system

A method for wireless power transfer (WPT) to an electric vehicle (EV) performed by a wireless charging apparatus may include detecting, by the wireless charging apparatus, an alignment state between a transmission pad mounted in the wireless charging apparatus and a reception pad mounted in the EV; controlling, by the wireless charging apparatus, a number of turns in a transmission coil included in the transmission pad or a reception coil included in the reception pad according to the detected alignment state; and performing, by the wireless charging apparatus, WPT to the EV after the controlling of the number of turns in the transmission coil or the reception coil is completed.

Method and apparatus for transferring wireless power to electric vehicle using controlling turns of coil

A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss.

Pulse width modulation resonance converter and charger for vehicle using the same

Growing community of inventors

Do, South Korea

Jong Pil Kim