Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Postech Academy-industry Foundation

Ki Jong Lee

Sang Cheol Shin

Ji Woong Jang

Kang Ho Jeong

Ki Young Jang

Yoo Jong Lee

Seong Min Lee

Jiwoong Jang

Jin Hwan Jung

Sangcheol Shin

Kangho Jeong

Jaewon Lee

Sung Kyu Kim

Beom Sik Kim

Won Kyoung Choi

Shin Hye Chun

Gun Soo Kang

Hyong Joon Park

Tae Hwan Chung

Young Seul Lim

Hong Seok Song

Ho Tae Chun

Je Hwan Lee

Jong Kyung Lim

Byeong Cheol Song

Sung Jin Kim

Dong Hoon Park

Jung Hong Joo

Deok Ki Kim

Jong Kyong Lim

Joon Hwan Kim

Han Geun Jang

Kwang Hee Nam

Sang Hoon Kwak

Jee Hye Jeong

Dae Deuk Park

Youngseul Lim

YooJong Lee

Jun Hwan Kim

A motor driving apparatus includes an inverter that includes a switching element connected between either terminal of a battery and a thermistor insulated from the switching element and that drives a motor through the switching element, a resistor connected between a sensing node to which one end of the thermistor is connected and a terminal of a low source voltage, and a motor controller configured for controlling a relay connected between the battery and the switching element based on a voltage of the sensing node.

Motor driving apparatus and method for alleviating burn-out of the same

A vehicle for supplying a constant current to a motor without changing a gate voltage even at high temperatures is provided. The vehicle includes at least one switching element that supplies a current to a motor; a temperature sensor that detects temperature information of at least one transistor; at least one processor that transmits a clock signal corresponding to driving of the motor; and a driver that receives the clock signal, and transmits a driving signal to the transistor. A converter then determines a duty of the driving signal based on the temperature information received from the temperature sensor.

Vehicle and method of controlling the same

Charging system and method using a motor driving system are proposed. The charging system includes a battery, an inverter to which D.C. power stored in the battery is applied, including a plurality of legs each including two switching elements, a motor including a plurality of coils of which first ends are respectively connected to connection nodes of the switching elements of each of the plurality of legs, and second ends are connected to each other to form a neutral point, and an inverter driving part configured to control switching of the switching elements, so that switching speeds of the switching elements are different for each mode of a motor driving mode and a charging mode so as to change magnitude of charging voltage supplied to the neutral point of the motor and to output the charging voltage to the battery.

Charging system and method using motor driving system

A charging system using a motor driving system includes: a battery, an inverter having connection terminals including a positive terminal and a negative terminal, and a plurality of motor connection terminals, and a plurality of switching elements forming an electrical connection relationship between the DC connection terminals and the connection terminals; a motor including a plurality of coils that has first ends respectively connected to the motor connection terminals, and second ends connected to each other to form a neutral point; a plurality of switches to form an electrical connection between the battery and the inverter, and to form an electrical connection between the battery and the neutral point, and to connect or disconnect a charging current to the DC connection terminals; and a controller controlling operation of the switches and the inverter based on a magnitude of a charging voltage.

System and method for charging using motor driving system

A DC-DC converter includes: a first capacitor; a first switching element, a second switching element, a third switching element, and a fourth switching element sequentially connected to one another in series between both ends of the first capacitor; a second capacitor having both ends connected at a connection node of the first switching element and the second switching element and a connection node of the third switching element and the fourth switching element, respectively; and a controller configured to determine whether an overvoltage is applied to both ends of the first to fourth switching elements, respectively, based on a first sensed voltage obtained by sensing a voltage applied to the first capacitor and a second sensed voltage obtained by sensing a voltage applied to the second capacitor.

DC-DC converter and method for controlling the same

A power conversion apparatus for multi-voltage charging is provided. The power conversion apparatus includes a housing, a motor connecting terminal disposed at one side of the housing, a relay having a first end electrically connected to the motor connecting terminal, and a capacitor having a first terminal electrically connected to a second end of the relay, and second and third terminals respectively connected to positive and negative terminals of an external battery, wherein the motor connecting terminal, the relay, and the first, second and third terminals are disposed within the housing along an outer edge of the housing.

Power conversion apparatus for multi-voltage charging

An overcurrent detection reference compensation system of a switching element for an inverter and an overcurrent detection system using the same can correct an overcurrent detection reference used to detect an overcurrent of a switching element according to a temperature of the switching element.

Overcurrent detection reference compensation system of switching element for inverter and overcurrent detection system using the same

A method includes: detecting, by a motor controller, an interlock failure of a connector for connecting between a gate driver and the motor controller, the connector being connected to an inverter for driving a motor in an eco-friendly vehicle; and determining, by the motor controller, that the interlock failure of the connector has occurred when an output value of a signal processor provided in the motor controller so that a sensing signal is inputted from the gate driver through the connector is detected as a value beyond a predetermined normal sensing range.

Method for detecting interlock failure of connector in eco-friendly vehicle

A charging system for an eco-friendly vehicle is provided. The system includes a power supply unit that provides power for charging an automotive battery and a charging unit including a motor and an inverter connected with the motor, and that charges the battery by being supplied with power from the power supply unit. One or more relays connect the power supply unit and the battery to each other and a controller moves a rotor of the motor to a predetermined reference position before charging the battery.

Charging system for eco-friendly vehicle and charge control method using the same

An electronic circuit module is provided. The electronic circuit module prevents damage by efficiently detecting an overcurrent in the electronic circuit module using an SiC MOSFET. The electronic circuit module includes an input unit that is configured to input a reference voltage and a switching unit that is configured to output a first voltage based on a current flow. A converter is configured to output a second voltage based on the first voltage and the reference voltage. An output unit is configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage.

Electronic circuit module and vehicle including the same

An inverter system for a vehicle includes: an energy storage device configured to store electrical energy, a first inverter including a plurality of first switching elements and configured to convert the electrical energy stored in the energy storage device into alternating-current (AC) electric power, a second inverter including a plurality of second switching elements different from the plurality of first switching elements, a motor configured to be driven by receiving the AC power converted by the first inverter and the second inverter, current sensors disposed between the first inverter and the motor and the second inverters and the motor, respectively, and configured to detect a current input to the motor, and a controller configured to generate a pulse width modulation (PWM) signal for controlling driving of the motor.

Inverter system for vehicle

An Insulated Gate Bipolar Transistor (IGBT) temperature sensor correction apparatus includes an Insulated Gate Bipolar Transistor (IGBT); a temperature sensor having a sensing diode; and a process variation sensor having an internal resistor.

IGBT temperature sensor correction apparatus and temperature sensing correction method using the same

A gate driving apparatus for a power semiconductor device may include: a first off-resistor and a second off-resistor each having a first end connected to a gate of the power semiconductor device; a first off-switch configured to determine a connection state between a second end of the first off-resistor and a ground based on a gate driving signal for determining an on/off state of the power semiconductor device; a second off-switch configured to determine a connection state between a second end of the second off-resistor and the ground; an electric current detector configured to detect an electric current flowing from a collector (drain) of the power semiconductor device to an emitter (source) of the power semiconductor device; and a controller configured to determine an open/closed state of the second off-switch based on the gate driving signal and a magnitude of the electric current detected by the electric current detector.

Gate driving apparatus for power semiconductor device

An inverter system for a vehicle may include an energy storage device configured to store electrical energy; a first inverter including a plurality of first switching elements, and converting the energy into AC power; a second inverter including a plurality of second switching elements different from the first switching elements, being connected to the energy storage device in parallel with the first inverter, and converting the energy into AC power; a motor driven by receiving the AC power; a PWM signal generating device configured to generate a reference Pulse-width modulation (PWM) signal for controlling driving of the motor; and a PWM signal converting device configured to convert the reference PWM signal into both a first PWM signal input into the first inverter to drive the first switching elements, and a second PWM signal input into the second inverter to drive the second switching elements.

An IGBT temperature sense circuit is provided. The IGBT temperature sense circuit automatically calibrates a temperature sense of a diode to minimize an error based on element characteristics of a temperature sense diode, precisely senses the temperature and removes a limit of a maximum current (to increase the maximum current) of an output of an IGBT. A temperature sense circuit includes an automatic calibrator that is configured to supply current of a current source to a current to a diode and a diode temperature sensor that is configured to measure a voltage of one side terminal of the diode based on the current of the diode based on a change of a temperature and adjustment of an operation of a protection object device.

Growing community of inventors

Osan-si, South Korea

Ki Jong Lee