Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Kookmin University

Sang-Kyoo Han

Chung-Wook Roh

Sung-soo Hong

Sang Hoon Lee

Yong-Woo Kim

Joon-Yeon Kim

Yon-Goo Park

Hak-Cheol Yang

Du Hee Jang

Sang-keun Ji

Ka San Ha

Jong-Ki Choi

Hyun-Gu Heo

Yong-Jin Jeong

Suk-Chin Sakong

Won-Seok Nam

The present disclosure provides a display device, which enables minimization of a transformer circuit and which can be driven using various commercial voltages, and a method for controlling the display device. The display device according to an embodiment comprises: a display; a transformer which transforms commercial power and supplies the transformed commercial power to the display and which includes a plurality of switching devices; and a controller for determining, on the basis of the magnitude of an input voltage input to the transformer, whether or not to open at least one of the plurality of switching devices, and controlling the plurality of switching devices on the basis of an output voltage of the transformer to perform a modulation control of the output voltage to follow a predetermined reference voltage.

Display device controlling the switching device to perform modulation control of output voltage of transformer and method for controlling the display device

A power control method for tracking a Maximum Power Point (MPP) in a photovoltaic system including a solar cell and a boost converter. The power control method includes finding the MPP by applying a continuous ON/OFF signal to the boost converter as a first control signal for controlling a duty ratio of the boost converter, and maintaining an operating point of the photovoltaic system at the MPP by applying a second control signal for controlling the duty ratio to the boost converter depending on a constant-voltage command. In tracking an MPP in a photovoltaic system, an MPPT algorithm may remain at the MPP, without self oscillation, improving fast dynamic characteristics upon a change in solar radiation.

Power control method and apparatus for tracking maximum power point in a photovoltaic system

A plasma display device includes first to fourth transistors and a plurality of first electrodes. A first terminal of a first capacitor is connected to a power supply supplying a voltage. A second terminal of a second capacitor connected to a second terminal of the first capacitor is connected to a ground terminal. A first diode is connected to the first electrodes through a first inductor and a fifth transistor, which forms a voltage rising path. A second diode is connected to the first electrodes through a second inductor and a sixth transistor, which forms a voltage falling path. A third diode is connected to the third transistor and the second diode, which forms a voltage sustaining path during a voltage rising period. A fourth diode is connected to the second transistor and the first diode, which forms a voltage sustaining path of a voltage falling period.

Plasma display device, apparatus for driving the same, and method of driving the same

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Seoul, South Korea

Sang-Kyoo Han