Abstract: Provided is a power conversion system including a heat sink, a first heat emitter provided on an upper surface of the heat sink, a second heat emitter electrically connected to the first heat emitter and provided on a lower surface of the heat sink, a third heat emitter provided on one side of the heat sink and spaced apart by a predetermined distance from the heat sink, and a heat dissipation fan provided in a direction facing the third heat emitter based on the heat sink and spaced apart by a predetermined interval from the third heat emitter, wherein, during a normal operation, more heat is emitted by the first heat emitter than by the second heat emitter.

Abstract: The present disclosure relates to a power converter capable of improving stabilization while minimizing loss when switching a switch included in the power converter. The power converter includes a switch; a gate driver configured to drive the switch at a predetermined duty ratio and apply a positive voltage when the switch is turned on and a negative voltage when the switch is turned off; a negative power supply unit configured to supply the negative voltage to the gate driver and vary a magnitude of the negative voltage; a current sensor configured to sense a current flowing in the switch; and a control unit configured to control the negative power supply unit to adjust the magnitude of the negative voltage applied to the switch according to a value sensed by the current sensor.

Abstract: A circuit for preventing power imbalance of a resonance-type power converter is proposed. The circuit may include a rectifier converting input alternating current (AC) into direct current (DC) and frequency-controlled first and second resonant converter modules configured to receive an output voltage of the rectifier divided into two stages. The circuit may further include a controller outputting a first frequency command for controlling a frequency of a pulse width modulation (PWM) signal supplied to a switching element of a first switching unit of the first resonant converter module. The circuit may further include a frequency compensator compensating for the first frequency command and then outputting a second frequency command for controlling a frequency of a PWM signal supplied to a switching element of a second switching unit of the second resonant converter module, so as to eliminate power imbalance between the first and second resonant converter modules.

Abstract: A mobile terminal including: a memory having a plurality of applications stored therein; an application management module configured to receive application information corresponding to the respective applications, and generate status information of the applications, corresponding to the application information; and a controller configured to determine execution history information of the applications through the status information provided from the application management module, wherein the application management module includes: an application information collection unit configured to collect cache data size information of the respective applications at preset time intervals; and a comparison unit configured to generate the status information of the applications by comparing the cache data size information of the applications, collected by the application information collection unit, to reference values corresponding to the respective applications.

Abstract: This application relates to an absolute position detection device and detection method of a rotating body using a magnetic material. The device may include magnets coupled to a rotating body and configured to rotate together and having n pole pairs, wherein n is a natural number and (n+1) magnetic materials arranged adjacent to the magnets, spaced apart from each other by a predetermined interval, and configured to rotate together with the rotating body. The device may also include a first Hall sensor spaced apart from the magnets, installed to allow the magnetic materials to rotate in a space between the first Hall sensor and the magnets and configured to output a first signal based on the magnets when the magnetic materials approach the first Hall sensor. The device may further include a controller configured to measure an absolute position of the rotating body using the first signal.

Abstract: This application relates to an absolute position detection device and detection method of a rotating body. In one aspect, the device includes first row magnets coupled to a rotating body to rotate together and having n pole pairs, and second row magnets coupled to the rotating body to rotate together and having (n+1) pole pairs. The device also includes a first Hall sensor installed adjacent to the first row magnets and configured to detect a change in magnetism according to rotation of the first row magnets. The device further includes a second Hall sensor installed adjacent to the second row magnets and configured to detect a change in magnetism according to rotation of the second row magnets. The device further includes a controller configured to measure an absolute position of the rotating body using signals output from the first and second Hall sensors.

Abstract: This application relates to an absolute position detection device and detection method of a rotating body. In one aspect, the device includes first row magnets coupled to a rotating body to rotate together and having n pole pairs, and second row magnets coupled to the rotating body to rotate together and having (n+1) pole pairs. The device also includes a first Hall sensor installed adjacent to the first row magnets and configured to detect a change in magnetism according to rotation of the first row magnets. The device further includes a second Hall sensor installed adjacent to the second row magnets and configured to detect a change in magnetism according to rotation of the second row magnets. The device further includes a controller configured to measure an absolute position of the rotating body using signals output from the first and second Hall sensors.

Abstract: This application relates to an absolute position detection device and detection method of a rotating body using a magnetic material. The device may include magnets coupled to a rotating body and configured to rotate together and having n pole pairs, wherein n is a natural number and (n+1) magnetic materials arranged adjacent to the magnets, spaced apart from each other by a predetermined interval, and configured to rotate together with the rotating body. The device may also include a first Hall sensor spaced apart from the magnets, installed to allow the magnetic materials to rotate in a space between the first Hall sensor and the magnets and configured to output a first signal based on the magnets when the magnetic materials approach the first Hall sensor. The device may further include a controller configured to measure an absolute position of the rotating body using the first signal.

Abstract: It is a technical object of the present invention to provide a boot clamping structure for a constant velocity joint that can securely fasten a clamp and a boot so that the clamp and the boot do not run against each other. To this end, the boot clamping structure for a constant velocity joint of the present invention is a boot clamping structure for a constant velocity joint for fastening both ends of a boot using a clamp, and includes a main pressing portion that is provided to be protruded in a first direction toward the boot on an inner circumferential surface of the clamp.

Abstract: The present disclosure provides an isolated DC-DC converter and a driving method thereof. The isolated DC-DC converter includes: a switching unit connected to terminals of a power supply, comprising three pairs of switches connected in parallel, and configured to switch on and off the three pairs of switches; a transformer unit comprising a first through third transformers, each having a primary winding connected to the switching unit and a secondary winding that are wound in a predetermined turns ratio and transforming a voltage applied to the primary winding according to the turns ratio; a post-processing unit connected to the secondary winding of each of the first through third transformers and configured to rectify and filter a voltage induced in the secondary winding to generate and output an output voltage; and a control unit connected to the switching unit and configured to control switching operation of the switching unit by providing the switching unit with carriers and reference voltages.

Abstract: It is a technical object of the present invention to provide a boot clamping structure for a constant velocity joint that can securely fasten a clamp and a boot so that the clamp and the boot do not run against each other. To this end, the boot clamping structure for a constant velocity joint of the present invention is a boot clamping structure for a constant velocity joint for fastening both ends of a boot using a clamp, and includes a main pressing portion that is provided to be protruded in a first direction toward the boot on an inner circumferential surface of the clamp.

Abstract: A polypeptide having chemokine activity mediated by binding to C-C chemokine receptor type 3 (CCR3) comprising SEQ ID NO: 1 and uses thereof are described.

Abstract: A mobile terminal including: a memory having a plurality of applications stored therein; an application management module configured to receive application information corresponding to the respective applications, and generate status information of the applications, corresponding to the application information; and a controller configured to determine execution history information of the applications through the status information provided from the application management module, wherein the application management module includes: an application information collection unit configured to collect cache data size information of the respective applications at preset time intervals; and a comparison unit configured to generate the status information of the applications by comparing the cache data size information of the applications, collected by the application information collection unit, to reference values corresponding to the respective applications.

Abstract: The present disclosure provides an isolated DC-DC converter and a driving method thereof. The isolated DC-DC converter includes: a switching unit connected to terminals of a power supply, comprising three pairs of switches connected in parallel, and configured to switch on and off the three pairs of switches; a transformer unit comprising a first through third transformers, each having a primary winding connected to the switching unit and a secondary winding that are wound in a predetermined turns ratio and transforming a voltage applied to the primary winding according to the turns ratio; a post-processing unit connected to the secondary winding of each of the first through third transformers and configured to rectify and filter a voltage induced in the secondary winding to generate and output an output voltage; and a control unit connected to the switching unit and configured to control switching operation of the switching unit by providing the switching unit with carriers and reference voltages.

Abstract: The present invention relates to a novel polypeptide having chemokine activity and, more specifically, to a polypeptide composed of the amino acid sequence represented by SEQ ID NO: 1 and a use thereof. The polypeptide of the present invention is composed of SEQ ID NO: 1 and exhibits chemokine activity through the binding with CCR3, and thus, the polypeptide has a high utilization effect for various purposes, such as immunoregulation, and diagnosis, treatment, and medicine development for CCR3-mediated diseases or disease symptoms.

Abstract: The present disclosure relates to an apparatus and method for estimating a temperature of a motor using a Hall sensor. The method includes detecting, at a digital Hall sensor, a position of a rotor included in a motor and outputting an on signal in an operating period and an off signal in a release period according to a relative position of the rotor, calculating, at a temperature determining module, a difference between duration of the operating period and duration of the release period according to an output waveform of the digital Hall sensor, and then determining, at the temperature determining module, a temperature of the motor with reference to a temperature corresponding to the duration difference. Accordingly, it is possible to estimate the internal temperature of a motor without installing a temperature sensor in the motor, to maintain a small size of the motor, and to reduce production costs.

Abstract: Provided are a power generation method and system of a power generator that can allow an output power of the power generator to be constant and cope with a case in which the velocity of a power generation source changes very quickly at a low lost. The power generation method includes determining a reference total power intended to be generated by a plurality of power generators, calculating a current command value through the reference total power and an instantaneous velocity sensed by each of the plurality of power generators, and regulating an output current of the power generator using the calculated current command value such that a total power output by the plurality of power generators is approximate to the reference total power.

Abstract: Provided are a power generation method and system of a power generator that can allow an output power of the power generator to be constant and cope with a case in which the velocity of a power generation source changes very quickly at a low lost. The power generation method includes determining a reference total power intended to be generated by a plurality of power generators, calculating a current command value through the reference total power and an instantaneous velocity sensed by each of the plurality of power generators, and regulating an output current of the power generator using the calculated current command value such that a total power output by the plurality of power generators is approximate to the reference total power.

Abstract: Disclosed are a method and system for detecting a fault of a parallel coil type permanent magnet motor. This method includes driving a parallel coil type motor on the basis of a pre-defined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor on the basis of the phase current vector.

Abstract: An electronic device including a camera module that operates intuitively and an operating method thereof are provided. In a method for operating an electronic device, a rotation event of a zoom ring is detected for a predetermined time. A zoom speed of a barrel is determined in response to the detected rotation event. A zoom-in function or a zoom-out function is performed with the determined zoom speed.