Abstract: There is provided an apparatus for driving a switched reluctance motor (SRM), including: a motor driver applying a input voltage supplied from a power supply unit to phase windings of the SRM through a switching operation; and a processor controlling the switching operation of the motor driver depending on a driving state of the SRM.

Abstract: There is provided an apparatus for driving a motor including: a converter applying an input voltage to each phase winding of the motor; and a processor controlling a phase current flowing to the phase winding to which the input voltage is applied to be increased or decreased in a preset reference range and controlling phase commutation of the motor based on a change in the phase current.

Abstract: A method for manufacturing a solar cell capable of significantly reducing the amount of wastewater generated during a wet-etching process and improving the efficiency of the solar cell. A method comprising: texturing to form an uneven structure on one semiconductor substrate surface by etching the semiconductor substrate surface with a texturing device; forming a temporary layer at an upper portion of the semiconductor substrate surface to surround a first byproduct layer formed at a predetermined region of the semiconductor substrate surface during the texturing; and doping the semiconductor substrate surface with a predetermined dopant using a doping device to form a first semiconductor layer and a second semiconductor layer disposed above the first semiconductor layer and having a different polarity than the first semiconductor layer. The first byproduct layer and the temporary layer are simultaneously removed.

Abstract: A valve control system may include a latch valve controlling a stream of water in a pipe; a flow rate sensor measuring a flow rate in the pipe; and a valve control device determining that the latch valve is malfunctioning if a flow rate value measured by the flow rate sensor is not within a pre-set flow rate value range corresponding to a valve operation and controlling the latch valve to re-operate in the occurrence of the malfunction, wherein the valve control device may include a first timing device determining the number of re-operations of the latch valve, and wherein when the number of re-operations of the latch valve determined by the first timing device exceeds a pre-set number, the valve control device may control the latch valve to perform a reverse operation of the operation performed during the re-operations.

Abstract: Embodiments of the invention provide an apparatus for driving a motor, in which the apparatus includes a rectifier configured to rectify an input voltage to generate a driving voltage, and a motor driver configured to apply the driving voltage to the respective phases of the motor through a switching operation. The apparatus further includes a controller configured to control a pulse width modulation signal for controlling the switching operation of the motor driver, to decide whether or not driving of the motor is stopped depending on whether or not an over-voltage is generated in the input voltage based on an output voltage sensed by the rectifier and to decide whether or not the motor is again driven or whether or not the driving of the motor is completely stopped by deciding whether or not the input voltage returns to a normal voltage or whether or not the over-voltage is again generated within a predetermined time according to the number of generated over-voltages.

Abstract: An organic electroluminescent display includes: a first substrate including a plurality of pixel regions, each having three sub-pixel regions; a first electrode in each sub-pixel region on the first substrate; an organic light emitting layer in each pixel region on the first electrode; a second electrode on the organic light emitting layer; a second substrate facing the first substrate; and quantum dot layers on an inner surface of the second substrate and corresponding to at least two of the three sub-pixel regions.

Abstract: There are provided a valve control system, a bidet using the same, and a valve control method. The valve control system includes a latch valve controlling a stream of water in a pipe; a flow rate sensor measuring a flow rate in the pipe; and a valve control device controlling the operation of the latch valve. The valve control device determines whether or not the latch valve is malfunctioning upon analyzing a flow rate measured by the flow rate sensor. When the latch valve is malfunctioning, the valve control device controls the latch valve to re-operate.

Abstract: Disclosed herein is a secondary battery pack including a battery cell having an electrode assembly mounted in a battery case together with an electrolyte, the battery case having an open top sealed by a top cap, a protection circuit module having a protection circuit for controlling overcharge, overdischarge, and overcurrent of the battery cell, an insulative mounting member constructed in a structure in which the protection circuit module is loaded at a top of the insulative mounting member, the insulative mounting member being mounted to the top cap of the battery cell, and an insulative cap coupled to an upper end of the battery cell for covering the insulative mounting member in a state in which the protection circuit module is loaded on the insulative mounting member, wherein the top cap is provided with a pair of protrusion-type electrode terminals (a first protrusion-type electrode terminal and a second protrusion-type electrode terminal) connected to a cathode and an anode of the electrode assembly, r

Abstract: Disclosed herein are a motor protection device, a motor protection method, and a motor control system using the same. According to the present invention, the motor protection device including: a rotation speed change sensing unit that senses and outputs pulse widths of a pulse signal outputted from a rotation sensor installed in a motor; an abnormality determining unit that outputs abnormality-occurrence signal if the pulse widths of the pulse signal outputted from the rotation speed change sensing unit increase beyond a predetermined value; and a stopping unit that stops operation of a motor control system if the abnormality-occurrence signal is outputted from the abnormality determining unit, the motor protection method, and the motor control system using the same are provided.

Abstract: Embodiments of the invention provide a motor acceleration apparatus and a motor acceleration method. According to at least one embodiment, the motor acceleration apparatus includes a rectifier converting household power into direct current (DC) voltage to output the converted DC voltage, a switching converter switching the DC voltage output from the rectifier in an alternating current manner to drive a two-phase switched reluctance motor (SRM), and a microprocessor controlling the switching converter at the time of initial acceleration of the two-phase SRM, so that an initially set dwell angle is changed to a dwell angle in a normal operation state and starting an advanced-angle control.

Abstract: An organic electroluminescent display includes: a first substrate including a plurality of pixel regions, each having three sub-pixel regions; a first electrode in each sub-pixel region on the first substrate; an organic light emitting layer in each pixel region on the first electrode; a second electrode on the organic light emitting layer; a second substrate facing the first substrate; and quantum dot layers on an inner surface of the second substrate and corresponding to at least two of the three sub-pixel regions.

Abstract: A battery pack including a battery cell having an electrode assembly of a cathode/separator/anode structure mounted in a battery case together with an electrolyte in a sealed state, and a protection circuit module (PCM) electrically connected to the battery cell. The PCM includes a protection circuit board (PCB) electrically connected to the battery cell, the PCB being provided on a region where a circuit is connected with a conductive pattern including a fusing part, having relatively high resistance, configured to fuse itself for interrupting the flow of current when a large amount of current is conducted.

Abstract: Disclosed herein is a secondary battery pack including a battery cell having an electrode assembly mounted in a battery case together with an electrolyte, a protection circuit module (PCM) having a protection circuit for controlling overcharge, overdischarge, and overcurrent of the battery cell, an insulative mounting member mounted to a top cap of the battery cell, and an insulative cap coupled to the upper end of the battery cell, wherein the top cap is provided with at least one protrusion-type electrode terminal, and the top cap is provided at a partial region where the protrusion-type electrode terminal is not formed with a space (depression space) depressed downward by a predetermined depth.

Abstract: The present invention relates to a power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in a resonant frequency. More particularly, the present invention relates to a power supply and pickup system capable of maintaining the stability of efficiency of transmitting power to a pickup device from a power supply device even when a voltage or current changes by the variation in a resonant frequency. According to the power supply and pickup system of the present invention, Q-factor of a power supply and pickup system is set to a low value, a stability of efficiency of transmitting power to a pickup device from a power supply device is maintained even when a voltage of current changes by the variation in a resonant frequency.

Abstract: A method for manufacturing a solar cell capable of significantly reducing the amount of wastewater generated during a wet-etching process and improving the efficiency of the solar cell. A method comprising: texturing to form an uneven structure on one semiconductor substrate surface by etching the semiconductor substrate surface with a texturing device; forming a temporary layer at an upper portion of the semiconductor substrate surface to surround a first byproduct layer formed at a predetermined region of the semiconductor substrate surface during the texturing; and doping the semiconductor substrate surface with a predetermined dopant using a doping device to form a first semiconductor layer and a second semiconductor layer disposed above the first semiconductor layer and having a different polarity than the first semiconductor layer. The first byproduct layer and the temporary layer are simultaneously removed.

Abstract: A liquid crystal dispensing system includes a container to contain liquid crystal to be dispensed, a discharge pump to receive the liquid crystal from the container and to discharge the liquid crystal, a nozzle to dispense the liquid crystal discharged from the discharge pump onto a substrate, and a control unit to control a dispensing amount of liquid crystal discharged from the discharge pump and to compensate the dispensing amount when the dispensing amount of liquid crystal exceeds a limitation value.

Abstract: Disclosed herein is a secondary battery pack including a battery cell having an electrode assembly mounted in a battery case together with an electrolyte, a protection circuit module (PCM) having a protection circuit for controlling overcharge, overdischarge, and overcurrent of the battery cell, an insulative mounting member mounted to a top cap of the battery cell, and an insulative cap coupled to the upper end of the battery cell, wherein the top cap is provided with at least one protrusion-type electrode terminal, and the top cap is provided at a partial region where the protrusion-type electrode terminal is not formed with a space (depression space) depressed downward by a predetermined depth.

Abstract: There is provided a method for controlling a self-generating bidet that can perform power-generation and charging by introduced water and can be stably used. The method for controlling a self-generating bidet comprising a generator, a charging unit, a nozzle part, and a nozzle passage part that is provided between the generator and the nozzle part, the method for controlling the self-generating bidet comprising: a step of sensing the use of the bidet that senses whether the user wishes to use the bidet; and, if it is determined that the user wishes to use the bidet, a step of checking voltage that determines whether the voltage charged in the charging unit is lower than a predetermined reference voltage, and if so, performs power generation through the generator, and charges the charging unit.

Abstract: Disclosed herein are a method and apparatus of controlling driving of a two-phase switched reluctance motor (SRM). The apparatus includes: a target speed arrival judging unit judging whether or not a current speed of the SRM has arrived at a target speed; a zero volt switching (ZVS) achievement judging unit judging whether or not the SRM is in a state in which ZVS is possible; a negative torque generation judging unit judging whether or not a negative torque has been generated in the SRM; an advanced angle controlling unit judging whether or not an advanced angle will be controlled based on judgment results of the target speed arrival judging unit, the ZVS achievement judging unit, and the negative torque generation judging unit; and a dwell angle controlling unit judging whether or not a dwell angle will be controlled on the judgment results.

Abstract: A liquid crystal dispensing system includes a container to contain liquid crystal to be dispensed, a discharge pump to receive the liquid crystal from the container and to discharge the liquid crystal, a nozzle to dispense the liquid crystal discharged from the discharge pump onto a substrate, and a control unit to control a dispensing amount of liquid crystal discharged from the discharge pump and to compensate the dispensing amount when the dispensing amount of liquid crystal exceeds a limitation value.