Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Jung-Pil Park

Suk-Ki Kim

Sang-Min Nam

Jun-Young Lee

Chung-Wook Roh

Jeong-Hoon Kim

Byung-Nam An

Chong-Sop Moon

Jea-Hyuk Lim

Sang-Chul Han

Jang-Hoon Kim

Bong-Eun Yoon

Kyu-Sung Cho

An energy storage system includes a power conversion system configured to produce a control signal for regulating a frequency of power flowing from a power generation system to an electric-power system, and a battery system including a first battery rack, a second battery rack, a charger/discharger configured to perform a charging/discharging operation of the second battery rack, and a rack BMS configured to control the charging/discharging operation of the first and second battery racks using the control signal, and to control the charger/discharger, thus controlling a state of charge (SOC) of the second battery rack.

Energy storage system and controlling method thereof

A gate driver and a method of driving the same are disclosed. In one aspect, the gate driver includes a switching device, a pulse generator configured to generate a pulse signal. The gate driver also includes a pulse transformer configured to generate a gate voltage based on the pulse signal and apply the gate voltage to the switching device. The pulse generator is further configured to control the switching device by modifying a frequency of the pulse signal.

Gate driver and method of driving the same

An energy management system includes: a first interface configured to receive a first power from a power generation system; a second interface configured to couple to the power generation system, a power grid, and a storage device, and to receive at least one of the first power from the power generation system, a second power from the power grid, or a third power from the storage device, and to supply a fourth power to at least one of the power grid or a load; and a third interface configured to receive the third power from the storage device, and to supply a fifth power to the storage device for storage.

Energy management system and grid-connected energy storage system including the energy management system

A plasma display panel having a power supply unit connected to a scan driver without a bootstrap circuit. The driver includes a power supply unit supplying a first output voltage of a first level and has a pair of output terminals, a scan driving unit comprising a first driving switch controlling the connection of one of output terminals of the power supply unit to the electrodes of the plasma display panel and a second driving switch controlling the application of a second output voltage of a second level to the electrodes of the plasma display panel, and a third driving switch that controls the connection of a power input terminal of the second output voltage of the second level to the electrodes of the plasma display panel by being connected between the power input terminal of the second output voltage of the second level and the second driving switch.

Power supply and driver for plasma display panel

A plasma display device including a plasma display panel (PDP), a temperature detector for detecting temperature of the PDP, a driver for applying a driving voltage to a scan electrode, and a controller for generating a control signal to control the driver according to the temperature. The driver includes a transistor and first and second resistors. The transistor is coupled between a first power source and the scan electrode. The first power source supplies a scan voltage to the scan electrode. At least one of the first resistor and the second resistor is a variable resistor having a resistance that varies according to the control signal of the controller. A low discharge due to high temperature can be reduced or prevented, and the number of power sources of the plasma display device can be reduced.

Plasma display and voltage generator thereof

In a plasma display device, a source of a first transistor Sis coupled to an X electrode, and a drain thereof is coupled to a cathode of a diode D. An anode of the diode Dis coupled to a first power source for supplying a first voltage V. A drain of the first transistor Sis coupled to a drain of a second transistor Sthrough a capacitor, and a source of the second transistor Sis coupled to a ground source for supplying a second voltage of 0 V. A third transistor Shas a source coupled to the drain of the second transistor Sand a drain coupled to a third power source for supplying a third voltage V, and a fourth transistor Shas a drain coupled to the X electrode and a source coupled to the drain of the second transistor S

Plasma display device, and driving device and method thereof

The present invention provides a drive apparatus and method for a plasma display panel, in which the drive apparatus and method improve contrast and prevent mis-discharge. According to the drive method, in a reset interval of a first sub-field, a voltage having an increasing ramp waveform is applied to scan electrodes during a first interval, and common electrodes are floated during a portion of the first interval such that a voltage of the common electrodes is increased to an initial voltage, which corresponds to a voltage applied to the scan electrodes and to a voltage applied to both sides of panel capacitors. Further, in a reset interval of a second sub-field, which exhibits a higher gray than the first sub-field, a voltage having an increasing ramp waveform is applied to the scan electrodes during a second interval, and floating the common electrodes during a portion of the second interval such that the voltage of the common electrodes is increased to another voltage, which is less than the initial voltage.

Drive apparatus and method for plasma display panel

An apparatus for driving a plasma display panel (PDP). The PDP includes a sustain discharge unit, a first charge and discharge unit, and a second charge and discharge unit. The sustain discharge unit maintains a voltage of a terminal of the panel capacitor at the sustain discharge voltage or the ground voltage. The first charge and discharge unit charges one end of the panel capacitor to the sustain discharge voltage or discharges one end of the panel capacitor to the ground voltage. The second charge and discharge unit charges the other end of the panel capacitor to the sustain discharge voltage or discharges the other end of the panel capacitor to the ground voltage.

Plasma display panel and method for driving the same

An apparatus and method for driving a plasma display panel (PDP) where a switch device can perform zero voltage switching in driving the PDP. The apparatus for driving the PDP includes a sustain-discharge unit including first through fourth switches respectively connected to both ends of a panel capacitor between a power source and ground, for sustaining a panel capacitor terminal voltage to be at a first or a second sustain-discharge voltage; a first charge and discharge unit including a first inductor, for increasing the voltage of the panel capacitor to the first sustain-discharge voltage and switching a first switch in a state of a zero voltage by half of a resonance current generated by the first inductor; and a second charge and discharge unit including a second inductor, for decreasing the voltage of the panel capacitor to the second sustain-discharge voltage and switching a third switch in a state of the zero voltage by half of a resonance current generated by the second inductor.

Apparatus and method for driving plasma display panel

The present invention discloses an energy recovery sustain circuit for an AC plasma display panel in which includes one energy recovery sustain circuit incorporating X and Y electrodes. The invention includes a load capacitor, first and fourth switching elements to charge the load capacitor up to a predetermined positive voltage, a second and third switching elements to charge the load capacitor up to a predetermined negative voltage, a fifth switching element to apply an external voltage to the load capacitor to continually sustain the predetermined positive or negative voltage in the load capacitor during a certain period, an inductor for generating the certain leveled positive or negative voltage to charge the load capacitor, and first and second capacitors for charging or discharging a current flowing through the inductor. The invention has a simplified configuration, low production cost, and high reliability.

Growing community of inventors

Cheonan, South Korea

Jung-Pil Park