Korea Advanced Institute of Science and Technology

Samsung Electro-mechanics Co., Ltd.

Sk Energy Co., Ltd.

Sk Innovation Co., Ltd.

Korea Telecommunication Authority

Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Hyundai Motor Company

Kia Motors Corporation

Korea Aerospace Research Institute

Solum Co., Ltd.

Sk on Co., Ltd.

Gun Woo Moon

Chong Eun Kim

Don Sik Kim

Jeon Keun Oh

Soo Yeup Jang

Joong Hui Lee

Hong Sun Park

Jong Pil Kim

Tae Won Heo

Shin Young Cho

Dong Joong Kim

Sang Cheol Bong

Chol Ho Kim

Dong Seong Oh

Seong Wook Choi

Duk You Kim

Bong Chul Kim

Ki Bum Park

Kyu Min Cho

Sang Wook Kwon

Nam Yun Kim

Ki Young Kim

Chi Hyung Ahn

Byoung Woo Ryu

Sang Cheol Moon

Hak Ryong Kim

Jae Kuk Kim

Dong Wook Lee

Jeong Nam Lee

Myung Joong Youn

Che Hong Ahn

Woo Young Lee

Jong Woo Kim

Woo Jin Lee

Dong Jin Park

Jun Young Lee

Tae Woo Kim

Won Sik Oh

Jaehyuk Choi

Seok Joon Kim

Dae Youn Cho

Jong Sun Kim

Han Shin Youn

Jeong Eon Park

Sam Gyun Kim

Cheon-Yong Lim

Marn Go Kim

Byeong Woo Ryu

Young Do Kim

Byoung Hee Lee

Kang Hyun Yi

In Ho Cho

Chung Wook Roh

Young Seok Jung

Myoung Joong Youn

Jae Il Baek

Jae Bum Lee

Ju Hyun Bae

Provided is an integrated DC/DC and AC/DC converter system including a main relay selectively connected to any one of an AC power supply unit and a DC power supply unit and a controller connecting the main relay to the AC power supply unit or the DC power supply unit. Electrical energy based on the AC power output from the AC power supply and electrical energy based on DC power output from the DC power supply unit may be selectively provided to a load.

Integrated DC/DC and AC/DC converter system

Disclosed are a new phase shift full bridge (PSFB) converter using a clamp circuit connected to a center-tapped clamp circuit and an operating method thereof. The new PSFB converter using a clamp circuit connected to a center-tapped clamp circuit includes a primary-side circuit including a plurality of inductors connected to one end between a first switch and a second switch which are connected in series and to one end between a third switch and a fourth switch which are connected in series and a secondary-side circuit using a voltage applied by the primary-side circuit and including a clamping circuit configured with a first rectifier diode, a second rectifier diode, a third rectifier diode, a fourth rectifier diode, a first clamping diode, a second clamping diode and a capacitor in a center-tapped clamp circuit.

Phase shift bridge converter using clamp circuit connected to the center-tap of the transformer on the secondary side

A method and an apparatus for controlling wireless power transmission are provided. An apparatus for controlling wireless power transmission includes a controller configured to determine an output voltage of a power factor correction unit based on charging information of a battery, the power factor correction unit configured to correct an input voltage into the determined output voltage, and output a variable voltage, and a resonance unit configured to transmit power converted from the variable voltage to a wireless power reception apparatus.

Method and apparatus for controlling wireless power transmission

A DC-DC converter includes: a clamp capacitor having one terminal connected with a ground terminal of a voltage source; a switching circuit including first and second switches connected with each other in series between a positive terminal and the ground terminal of the voltage source, and third and fourth switches connected with each other in series between both terminals of the clamp capacitor; and a forward-flyback transformer including a plurality of primary coils connected between a first connection node between the first and second switches and a second connection node between the third and fourth switches.

DC-DC converter and control method thereof

There are a power module and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage switching input power to correct a power factor thereof; a DC/DC conversion stage switching the power of which the power factor has been corrected by the power factor correction stage to convert the power into preset DC power; a control unit controlling the power factor correction stage and the DC/DC conversion stage to perform a power conversion operation in a preset powered mode and stopping the power conversion operation of the DC/DC conversion stage in a preset idle mode; and a reference voltage supply unit supplying a preset reference voltage to the DC/DC conversion stage in the idle mode.

Power module and distributed power supply apparatus having the same

There are provided a power module in which a bias voltage is varied and supplied to a control circuit controlling power conversion when an idle mode is switched to a normal mode, and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage; a DC/DC conversion stage switching power to convert the power into pre-set DC power in a powering mode in which normal power is output; a standby stage converting the power into pre-set standby power in a cold standby mode in which the DC/DC conversion stage outputs power having a level lower than that of normal power; and a variable bias supply unit varying a voltage level of bias power for controlling DC/DC power conversion and supplying the same to the DC/DC conversion stage in the cold standby mode and the powering mode.

Power module varying bias power and distributed power supply apparatus

There is provided a phase shift full bridge (PSFB) type power supply device controlling a switching on time of lagging leg switches according to a load state. The power supply device includes a power supply unit supplying preset DC power by switching input power using a full bridge by a phase shift method; and a control unit controlling a switching time of a switch of the full bridge according to a load state in which the DC power is received from the power supply unit.

Power supply device having improved power conversion efficiency in light load conditions

There is provided a power supply apparatus supplying driving power. The power supply apparatus includes: a first power converter bypassing input power when a voltage level of the input power having a predetermined voltage level is within a reference voltage level range, and converting the input power to DC power having a preset voltage level when the voltage level of the input power is outside of the reference voltage level range; and a second power converter converting the power inputted from the first power converter to driving power having a preset voltage level.

Power supply apparatus

There is provided a power converter integrated with an auxiliary converter. The power converter includes: a flyback converter converting an input power of a power supply input terminal into a standby power through a primary side circuit connected to the power supply input terminal and a secondary side circuit magnetically coupled to the primary side circuit to supply the standby power; and a main converter converting the input power of the power supply input terminal into a main power to supply the main power, and converting the input power of the power supply input terminal into the standby power through the secondary side circuit of the flyback converter to supply the standby power, whereby the efficiency of the power converter may be improved.

Power converter integrated with flyback converter

The present invention relates, in general, to a charge equalization apparatus for batteries and, more particularly, to a charge equalization apparatus, in which the primary windings (Mto MN) of a number of transformers (Tto TN) corresponding to the number of battery cells are connected in parallel with each other, a switch (S) for controlling the flow of current of the primary windings (Mto MN) of the parallel-connected transformers is connected in series with the parallel-connected primary windings, respective secondary windings (Mto MN) corresponding to the primary windings are connected in parallel with the battery cells, and the battery cells are connected in series with each other.

Charge equalization apparatus with parallel connection of primary windings of multiple transformers

A direct current to direct current converter includes: an input terminal; an output terminal having voltage higher than the input terminal; a coupled inductor boost cell including a coupled inductor connected to the input terminal, a switch connected to the coupled inductor, and an output diode connected to the output terminal; and a clamp and energy transfer cell including a clamp diode connected to the coupled inductor, a clamp capacitor connected to the clamp diode, and an energy transfer diode connected to the output diode.

DC-DC converter and light emitting diode driving device including the same

There is provided a power supply unit supplying a standby power by sharing a switch of a main converter. The power supply unit includes: a main converter, and a standby converter. The main converter controls a current flowing in a primary side winding of a main transformer and supplies a main power through a secondary side winding of the main transformer. The standby converter controls a current flowing in a primary side winding of a standby transformer and supplies a standby power through a secondary side winding of the standby transformer, and a portion of a plurality of switches of the main converter is included in switches of the standby converter.

Power supply unit supplying standby power by sharing switch of main converter

The present invention relates to an adapter power supply, which includes a switching unit for switching a DC voltage; a transformer which has a primary winding connected to the switching unit, a secondary winding electromagnetically coupled to the primary winding, and an auxiliary winding electromagnetically coupled to the primary winding; a rectifier for rectifying a voltage outputted from the transformer; and a controller for controlling the switching unit to operate according to the PWM scheme in a normal operation mode, and to operate according to a quasi-resonant scheme in a standby mode, by detecting information of a load connected to the rectifier.

Adapter power supply having variable switching mode

A two-stage charge equalization apparatus for a series-connected battery string includes a battery module having a plurality of batteries connected in series; a battery string having M (M&#x2267;2) battery modules connected in series; M charge control switch modules connected in parallel to each of the M battery modules; M second DC/DC converters connected to each of the M charge control switch modules; a single first DC/DC converter connected to the M second DC/DC converter; and a microprocessor controlling the charge control switch module, wherein the first DC/DC converter is inputted with an overall potential of the battery string and outputs a potential lower than the potential inputted and each of batteries composing the battery module shares the second DC/DC converter using the charge control switch module.

Two-stage charge equalization method and apparatus for series-connected battery string

Growing community of inventors

Daejeon, South Korea

Gun Woo Moon