Patent application number | Description | Published |
20110181236 | CHARGER - Disclosed is a charger including a first rectifying portion that rectifies an alternating power and outputs the rectified power to a neutral point of a 3-phase motor; a second rectifying portion/inverter that charges output power of the first rectifying portion in a high-voltage battery in a charging mode and drives the 3-phase motor by switching the charged power of the high-voltage battery in a drive mode; a high-voltage charging controller that controls the first rectifying portion and second rectifying portion/inverter so as to charge the high-voltage battery in the charging mode; and a DSP (Digital Signal Processor) that controls the second rectifying portion/inverter so as to drive the 3-phase motor in the drive mode, and controls the high-voltage charging controller so as to charge the high-voltage battery in the charging mode. | 07-28-2011 |
20120230075 | POWER CONVERSION APPARATUS AND POWER CONVERSION METHOD THEREOF - An apparatus/method is provided. The power conversion apparatus includes: a rectifying unit including a silicon-controlled rectifier thyristor (SCR) for rectifying single-phase power externally inputted; a power factor correcting unit configured to correct a power factor of the power rectified by the rectifying unit; and a control signal generating unit configured to detect a zero-crossing point based on the single-phase power inputted and generate a pulse single of which a width increases as time elapses based on the detected zero-crossing point. The rectifying unit rectifies the single-phase power by using the pulse signal inputted to a gate terminal of the SCR. | 09-13-2012 |
20130193922 | APPARATUS FOR DISCHARGING DC-LINK CAPACITOR FOR ELECTRIC VEHICLE CHARGER - An exemplary embodiment of the present disclosure includes an apparatus for discharging DC-link capacitor for electric vehicle charger. In a case the apparatus operates abnormally, operations of a rectifier, a boost PFC circuit and a DC-DC converter are discontinued, and the apparatus receives the power source charged in the DC-link capacitor through the auxiliary power supply unit to thereby perform a control operation. | 08-01-2013 |
20130314185 | TRANSFORMER COOLING APPARATUS AND TRANSFORMER ASSEMBLY INCLUDING THE SAME - Provided are a transformer cooling apparatus and a transformer assembly including the same. The transformer cooling apparatus includes a first plate on which a transformer including a magnetic member and a coil is seated, a second plate disposed on a side of the first plate, the second plate being spaced apart from the first plate, and a coolant passage in which a coolant flows, the coolant passage being defined between the first plate and the second plate. | 11-28-2013 |
20130322137 | POWER FACTOR CORRECTION CIRCUIT - Disclosed is a power factor correction circuit. The power factor correction circuit according to an exemplary embodiment of the present disclosure includes an electrolyte capacitor and a film capacitor, where ripple burden of the electrolyte capacitor is lessened to reduce the capacity of the condenser and to lengthen the life. | 12-05-2013 |
20140104891 | DC-DC CONVERTER - Disclosed is a DC-DC converter. The DC-DC converter includes a power input unit to which power is applied, a first module comprising a first transformer and a second transformer to output a first output power transformed according to operations of a first switch and a second switch connected with the first transformer and the second transformer by using the applied power, a second module comprising a third transformer and a fourth transformer to output a second output power transformed according to operations of a third switch and a fourth switch connected with the third transformer and the fourth transformer by using the applied power, an output unit to output a sum of the first output power and the second output power, and a controller to control an interleaving operations between the first module and the second module. | 04-17-2014 |
20150061608 | POWER FACTOR CORRECTOR - A power factor corrector correcting the power factor of an alternating current (AC) voltage is disclosed. A power factor correcting unit corrects the power factor of the AC voltage. A smoothing unit smoothes a power factor corrected voltage and includes a film condenser and a plurality of electrolytic condensers. A rectified voltage is applied to one end of an inductor. One end of a switch is connected to the other end of the inductor, and the other end of the switch is earthed. One end of a diode is connected to one end of the switch. One end of a film condenser is connected to the other end of the diode, and the other end of the film condenser is earthed. An electrolytic condenser is parallel-connected to the film condenser. | 03-05-2015 |
20150062986 | POWER FACTOR CORRECTION CIRCUIT - Provided is a power factor correction circuit correcting a power factor of AC voltage. The power factor correction circuit includes: a rectifying unit stopping rectifying the AC voltage in a transient state and generating an rectified voltage by rectifying the AC voltage in a steady state; a power factor correction unit generating a power-factor-corrected voltage by correcting the rectified voltage; a smoothing unit generating a smoothed voltage by smoothing the power-factor-corrected voltage; and an inrush current limiting unit providing a limited current by limiting an inrush current generated by the AC voltage in the transient state and stopping providing a current to the smoothing unit. | 03-05-2015 |
20150063401 | TEMPERATURE MEASUREMENT APPARATUS USING NEGATIVE TEMPERATURE COEFFICIENT THERMISTOR - Provided is a temperature measurement apparatus using a negative temperature coefficient (NTC) thermistor. A temperature sensor includes the NTC thermistor and a variable resistor part. A resistance value of the variable resistor part varies between a default resistance value for measuring a temperature and a temporary resistance value for determining a disconnection. An abnormal operation determination unit determines whether the NTC thermistor is disconnected, based on an output voltage of the temperature sensor when the variable resistor part has the temporary resistance value. | 03-05-2015 |
20150063421 | TEMPERATURE MEASUREMENT APPARATUS USING NEGATIVE TEMPERATURE COEFFICIENT THERMISTER - A temperature measurement apparatus using a negative temperature coefficient (NTC) thermister is provided. A temperature sensor includes the NTC thermister and a variable resistor part, in which a resistance value of the variable resistor part varies between a first resistance value for a first output voltage value and a second resistance value for a second output voltage value to allow a voltage value corresponding to a present temperature to be outputted. A voltage temperature matching unit outputs the present temperature based on the first output voltage value and the second output voltage value. | 03-05-2015 |