摘要:
A multi-phase interleaved bidirectional DC-DC converter with a high voltage conversion ratio is provided. The multi-phase interleaved bidirectional DC-DC converter with a high voltage conversion ratio allows effective control of charge/discharge in multi-energy storage modules including a battery cell module or a super capacitor module, which is characterized in low voltage and high current output. Accordingly, a high-efficiency bidirectional DC-DC converter for use in battery charge/discharge can be implemented.
摘要:
Provided is technology for charge and discharge control of a plurality of energy storage modules having different properties. For achieving the technology, there is provided a multi-input bidirectional DC-DC converter including: a first bidirectional DC-DC converter including a first input unit which stores an input current from a first energy storage module, a primary-side first half-bridge which is connected to the first input unit and controls an input current from the first energy storage module, an output unit which includes an output capacitor, a secondary-side half-bridge which is connected to the output unit and controls the output voltage, and a first transformer whose primary side is connected to the primary-side first half-bridge, whose secondary side is connected to the secondary-side first half-bridge, and which transforms a voltage at the primary side or at the secondary side according to a power mode; and a n-th bidirectional DC-DC converter.
摘要:
A multi-input bidirectional DC-DC converter with a high voltage conversion ratio is provided. The multi-input bidirectional DC-DC converter with a high voltage conversion ratio implements phase control loops independent from one another so as to realize independent control of charge and discharge in a plurality of energy storage modules, and thus a failure in one of energy storage modules does not affect the other energy storage modules. In addition, it is possible to easily add or remove a control loop that is controlled independently from other control loops.
摘要:
Provided is power conversion technology for charge and discharge control of an energy storage module such as battery or super capacitor. For achieving the technology, there is provided a multi-phase interleaved bidirectional DC-DC converter including: a first bidirectional DC-DC converter including a input unit which includes a first input inductor and an energy storage module which stores input current from the energy storage module, a first primary-side half-bridge which is connected to the first input inductor of the input unit and controls the input current from the energy storage module, an output unit which includes an output capacitor, a first secondary-side half-bridge which is connected to the output unit and controls the output voltage, and a first transformer whose primary side is connected to the first primary-side half-bridge, whose secondary side is connected to the first secondary-side half-bridge, and which transforms a voltage at the primary side or at the secondary side according to a power mode; and a n-th bidirectional DC-DC converter, wherein the n-th bidirectional DC-DC converter is composed of one or more n-th bidirectional DC-DC converters.
摘要:
A display and driving method for a display applying a dithering process. The display includes a display panel, a controller, a first driver, and a second driver. The dithering process is applied in subfields of the display panel. A plurality of row electrodes is divided into a plurality of groups according to a dithering pattern in a subfield to which the dithering process is applied. Scan pulses are applied to row electrodes of a group out of the plurality of the groups in sequence, and scan pulses are applied to row electrodes of another group in sequence.
摘要:
A method for driving a plasma display panel (PDP) that includes a middle electrode formed between an X electrode and a Y electrode. A sustain discharge pulse voltage is periodically applied to the X electrode and the Y electrode in a pulse train fashion. A reset waveform, a scan pulse voltage, and a sustain discharge pulse voltage are applied to the middle electrode. In addition, the final sustain discharge pulse of the sustain discharge period is applied to any one of the X and Y electrodes, and the first sustain discharge pulse can be applied to any one of the X and Y electrodes.
摘要:
A plasma display device including a plasma display panel having a plurality of discharge cells defined between a front substrate and a rear substrate, address electrodes proximate to the discharge cells and extending in a first direction, and scan and sustain electrodes proximate to the discharge cells and extending in a second direction crossing the first direction, wherein, for a same pixel, at least two discharge cells of different colors correspond to a same address electrode.
摘要:
A plasma display device and driving method. A plurality of subfields from one frame are divided into a first subfield group and a second subfield group. A first subfield and a second subfield having adjacent weights in the first subfield group each include a reset period for resetting the discharge cells, a first address period for selecting discharge cells in the first line group, a first sustain period for performing a sustain discharge, a second address period for selecting discharge cells in the second line group and a second sustain period for performing a sustain discharge.
摘要:
A plasma display and driving method thereof. A median electrode is formed between X and Y electrodes for receiving sustain pulse voltages, and a reset waveform and a scan pulse voltage are applied to the median electrode. A short gap discharge is performed between the X electrode and the median electrode during the initial interval of a sustain interval, and a long gap discharge is performed between the X and Y electrodes during the normal sustain interval to thus perform a stable discharge. The X and Y electrode drivers are realized through comparable circuits since the waveforms applied to the X and Y electrodes are substantially symmetric.
摘要:
A plasma display and a driving device therefor. In a sustain discharge driving circuit that includes a power recovery circuit and a sustain voltage supply circuit, a transformer is used. The transformer includes a primary coil and a secondary coil that are coupled with each other. The primary coil of the transformer is connected in parallel to a panel capacitor serving as a capacitive load so as to increase a change of a voltage that is applied to an inductor, such that a voltage rising period and a voltage falling period are reduced. With the reduction of the turn-on time of a switch, the power consumption of the switch is reduced. Further, as the inductor initially stores current, the occurrence of hard switching is reduced when a sustain discharge voltage is applied and elements of the circuit are protected.