Samsung Electro-mechanics Co., Ltd.

Sungkyunkwan University

Ku Yong Kim

Jae Sun Won

Don Sik Kim

Tae Hoon Kim

Young Ho Kim

Jin Wook Kim

Hee Seung Kim

Dong Jin Lee

Dong Seong Oh

Tae Won Lee

Byoung Kuk Lee

Sung Soo Hong

Sang Kyoo Han

Chung Yuen Won

Hyo Young Kim

Chung Wook Roh

Yong Hyok Ji

Doo Young Song

Jae Cheol Ju

Young Gun Hong

Mi Ran Baek

There is provided an apparatus and method for controlling a switch of a flyback converter for a solar generating system. The apparatus for controlling a switch of a flyback converter for a solar generating system includes: an MPPT controller generating a current command value for a maximum power point tracker of a solar cell module, based on input voltage, input current, and output voltage of the flyback converter; a current controller generating a current control signal for tracking the current command value; an output current command value generator generating the phase and magnitude command value of the output current, based on the phase of the output voltage and the current control signal; and a switch controller controlling the main switch of the flyback converter, based on the phase and magnitude command value of the output current, thereby simplifying a circuit while solving disadvantages of a discontinuous conduction mode and a boundary conduction mode.

Apparatus and method for controlling switch of flyback converter for solar generating system

The power supply includes: an electromagnetic interference filter including a first filter which has a pair of electromagnetically coupled cores having at least two leg parts, first and second bobbins each having a tube-shaped body part having a penetration hole into which each of the leg parts is inserted and having a winding region defined as the circumference of the outer peripheral surface of the body part, and first and second coils respectively wound around the first and second bobbins to remove common mode electromagnetic interference included in power transmitted from a power line, the electromagnetic interference filter removing differential mode electromagnetic interference due to leakage inductance formed due to the leakage of magnetic flux flowing through the cores; a power factor corrector correcting a power factor of the power where the electromagnetic interference is removed; and a power converter switching the power-factor-corrected power into a driving power having a predetermined voltage level.

Power supply and display device including the same

Provided is a power supply device including a power supply unit that supplies a driving voltage for driving at least one or more loads; a current balancing unit that maintains a current balance of the driving voltage supplied to the respective loads; a detection unit that detects currents flowing in the current balancing unit through electromagnetic induction so as to output a detection signal; and a control unit that receives the detection signal to judge whether the loads are opened or not and outputs a control signal for controlling the magnitude of the driving voltage.

Power supply device

Growing community of inventors

Gyunggi-do, South Korea

Ku Yong Kim