Patent application number | Description | Published |
20100089670 | INVERTER CIRCUIT FOR VEHICLES - The present invention provides an inverter circuit for a vehicle, which includes: a switching unit that includes a plurality of switching elements and switches a direct current into an alternating current; and a variable clamping unit that clamps an overshoot in case the overshoot is generated, and stops the operation of the switching unit in case a system voltage is greater than a clamping breakdown voltage. The circuit enables a voltage (DC input voltage) greater than a breakdown voltage of clamping unit to be used as a system voltage. | 04-15-2010 |
20110316524 | APPARATUS FOR DIAGNOSING DC-DC CONVERTER AND METHOD THEREOF - A diagnosis device and method of a voltage transformer can include a current transformer disposed at one side of an output port for generating a current variation according to an on/off operation of a power switch element; a first current detector configured to detect a forward direction current from the current transformer; a second current detector configured to detect a reverse direction current from the current transformer; a first voltage transformer configured to transform the forward direction current detected from the first current detector to a forward direction voltage; a second voltage transformer configured to transform the reverse direction current detected from the second current detector to a reverse direction voltage; and a diagnosis portion for comparing the forward direction voltage with the reverse direction voltage to determine whether or not an offset is formed. | 12-29-2011 |
20120292989 | CONTROL OF A CONVERTER FOR AN ELECTRIC VEHICLE - Control of a converter for an electric vehicle may control the converter of the electric vehicle where the converter is adapted to drop voltage and a counting unit is adapted to count a signal generated by the converter. The control includes inputting a signal generated by the converter to the counting unit during operation of the converter; counting the signal by the counting unit; determining whether a counting result of the counting unit corresponds to a predetermined interval; and deciding that the converter is out-of-order in a case that the counting result does not correspond to the predetermined interval. | 11-22-2012 |
20140222266 | INTEGRATED ELECTRONIC POWER CONTROL UNIT OF ENVIRONMENTALLY-FRIENDLY VEHICLE - An integrated electronic power control unit of an environmentally-friendly vehicle that may reduce costs and enhance structure and space utilization by integrally configuring at least two or more electronic power control units (EPCUs) disposed within the environmentally-friendly vehicle. The integrated electronic power control unit (EPCU) includes a plurality of EPCUs such as a motor control unit (MCU), a low voltage DC-DC converter (LDC), or a hybrid control unit (HCU), wherein at least one or more components of the plurality of EPCUs are integrated. In addition, the integrated electronic power control unit includes a hardware failure management unit (HFM) that is configured to detect and manage a failure of hardware including the at least one or more integrated components. | 08-07-2014 |
20140354265 | VOLTAGE SENSING CIRCUIT FOR CONVERTER - A voltage sensing circuit of a converter senses input and output voltages of a converter with only one sensing circuit. The voltage sensing circuit is capable of reducing the number of the components for a controller and the volume thereof to save cost, and detecting whether the discontinuous mode (DCM) is entered or not, thereby to apply a separate control algorithm thereto when the DCM is entered. | 12-04-2014 |
20150349623 | INVERTER GATE BOARD - An inverter gate board divided into a low-voltage region and a high-voltage region includes a plurality of drive circuits surface-mounted between the low-voltage region and the high-voltage region, each having a single main power source (SMPS) controller, and a plurality of transformers surface-mounted between the low-voltage region and the high-voltage region so as to supply a transformed voltage to each of the plurality of drive circuits, respectively. | 12-03-2015 |
20160023561 | POWER MODULE PRINTED CIRCUIT BOARD - An analog control system configured to operate a converter in an electric vehicle battery charging system is provided. The analog control system includes a pulse width modulation (PWM) output unit that is configured to output a PWM signal to the converter and an integrated control unit that is configured to sense an input voltage and an output voltage of the converter. The analog control system may be implemented on a printed circuit board having a first ground voltage stage connected to the PWM output unit, a second ground voltage stage separated from the first ground voltage stage by a first predetermined interval and connected to the integrated control unit. A filtering unit is disposed between the first ground voltage stage and the second ground voltage stage to pass an output signal of a predetermined band from the PWM unit to the integrated control unit. | 01-28-2016 |
20160096442 | VEHICLE CHARGER AND CONTROL PILOT SIGNAL DETECTION METHOD THEREOF - A control pilot (CP) signal detection method for a vehicle charger includes: counting CP signals based on signal levels of the CP signals during a set period of time, when an input of the CP signals is detected while an ignition of a vehicle is turned off; determining whether a count of high-level CP signals among the CP signals is within a reference range, when the set period of time elapses; and outputting state information of the CP signals based on the determination of whether the count of high-level CP signals is within the reference range. | 04-07-2016 |
20160105164 | APPARATUS FOR GENERATING SWITCHING SIGNAL FOR ANALOG CONTROLLER - An apparatus for generating a switching signal for an analog controller includes: a voltage setting unit configured to set voltages V | 04-14-2016 |