Samsung Electro-mechanics Co., Ltd.

Korea Advanced Institute of Science and Technology

Sk Energy Co., Ltd.

Solum Co., Ltd.

Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Chong Eun Kim

Gun Woo Moon

Don Sik Kim

Jeon Keun Oh

Soo Yeup Jang

Joong Hui Lee

Hong Sun Park

Jeong Nam Lee

Duk You Kim

Jong Pil Kim

Tae Won Heo

Dong Joong Kim

Jae Kuk Kim

Ki Bum Park

Sang Cheol Bong

Chol Ho Kim

Sung Ho Kim

Dong Seong Oh

Dong Kyun Ryu

Shin Young Cho

Jong Woo Kim

Woo Jin Lee

Dong Jin Park

Byoung Woo Ryu

Hak Ryong Kim

Dong Wook Lee

Jeong Man Han

Kyu Min Cho

Kang Hyun Yi

Jae Kook Kim

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

A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; and a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal. The standby power unit varies a magnitude of the first standby voltage based on whether or not the second standby voltage is supplied to the standby output terminal.

Power supply device for supplying standby voltage by using main voltage

There are provided an apparatus for and a method of controlling a power supply system. The apparatus for controlling a power supply system includes an offset correction circuit equally dividing an input voltage into n (n is a natural number larger than 2) and outputting n divided voltages, and a control unit using an analog-to-digital converter (ADC) to detect the n divided voltages output from the offset correction circuit, and determining a difference in levels between a value of the detected n divided voltages and a value calculated by dividing the input voltage by n, as an offset correction value.

Apparatus for and method of controlling power supply system

There is provided a power supply including a direct current (DC) to DC converter supplying main power to a load, and a sub converter connected to the DC to DC converter and reducing output loss, wherein the sub converter is operable based on a hold-up time.

Power supply

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 power supply, including, a boost converter unit including a first boost converter having a first inductor, a first diode, and a first switching element, and a second boost converter having a second inductor, a second diode and a second switching element, an input voltage sensing unit sensing an input voltage applied to the boost converter unit, a control unit selecting one of a first boost mode in which current is divided between the first inductor and the second inductor, based on the input voltage, and a second boost mode in which current flows through the first inductor and the second inductor in this order, based on the input voltage, and a switching unit selecting one of the first boost mode and the second boost mode, based on the selection of the control unit.

Boost converter with first and second modes based upon the input voltage

There is provided a resonance-type power supply apparatus capable of controlling primary side switching by estimating output power based on resonance current of the primary side. The resonance-type power supply apparatus includes a switching unit switching input power, a transformer including a primary winding receiving the power switched by the switching unit and a secondary winding magnetically coupled to the first winding and having a preset turns ratio, and transforming the received switched power according to the turns ratio, a resonance unit electrically connected between the switching unit and the transformer and providing a resonance tank resonating with inductance from the transformer, and a controlling unit controlling the switching of the switching unit based on resonance power information input to the primary winding of the transformer by the resonance unit.

Resonance-type power supply apparatus

There is provided a power supply apparatus including an interleaved active clamp forward converter unit including a first active clamp forward converter and a second active clamp forward converter, and an output unit magnetically coupled to the forward converter unit and having an output path according to a duty ratio of the forward converter unit, wherein the output unit includes a third powering leg electrified when the first active clamp forward converter and the second active clamp forward converter are powered, and an output leg supplying power to a load.

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.

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

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 automatic charge equalization apparatus and method having an automatic PWM generating means for a series-connected battery string. The automatic charge equalization method and apparatus for a series-connected battery string according to the present invention can improve charge equalization by accomplishing charge equalization operation after comparing the potential of the corresponding battery cell with the average potential of the plurality of battery cells including the corresponding battery cell upon charging or discharging the corresponding battery cell.

Automatic charge equalization method and apparatus for series connected battery string

There is provided a transformer improved in leakage inductance including: a core having first, second and third legs electromagnetically coupled to one another; a primary winding formed of a conductor having one end and another end receiving power from the outside and dividedly wound around the first, second and third legs; and a secondary winding wound around at least one of the first, second and third legs and receiving induced power by electromagnetic induction with the primary winding.

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Gyunggi-do, South Korea

Chong Eun Kim