Hyundai Motor Company

Kia Motors Corporation

Sungkyunkwan University

Jeongbin Yim

Gu Bae Kang

Seong Yeop Lim

Byungsoon Min

Daewoong Han

Dong-Hee Kim

Dong-Gyun Woo

Byoung-Kuk Lee

Seung-Min Shin

Jinho Kim

Sangkyu Lee

Young Jun Lee

Jae Sang Lim

Kil Young Youn

Jeong Min Shin

Wooyong Jeon

Hyun Jun Soh

Junghong Joo

Gubae Kang

Jinhwan Jung

In-Pil Yoo

Jeongyun Lee

Dongjin Nam

Jaehwa Jeon

A power system having two motors includes: a first motor transmitting power to an output shaft of an engine or receiving power from the output shaft of the engine; a first clutch selectively connecting a first rotor of the first motor to the output shaft and mounted on a first power transmitting member that operably connects the output shaft and the first rotor of the first motor; a second motor outputting power to an input shaft of a transmission; and a second clutch selectively connecting the output shaft to a second rotor of the second motor and mounted on a second power transmitting member that operably connects the output shaft and the second rotor of the second motor.

Power system having two motors

A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.

Recharge systems and methods

The present disclosure provides a system and a method of controlling motor temperature for a green car including: a drive motor as a power source; a battery configured to provide a driving voltage to the drive motor; a water pump configured to supply coolant to the drive motor to cool the drive motor; a data detector configured to detect data regarding a driving state of the green car; and a vehicle controller configured to determine a driving mode based on the data regarding the driving state, to determine pump control rotation speed based on the driving mode, SOC of the battery, or motor temperature of the drive motor, and to operate the water pump based on the pump control rotation speed to change flow rate of the coolant supplied to the drive motor.

System and method for controlling motor temperature for green car

A DC-DC converter and a method for estimating output current of a DC-DC converter are provided. The method includes measuring, by a controller, input voltage and output voltage of the DC-DC converter and measuring output voltage of a current transformer (CT) included in the DC-DC converter. In addition, the method includes compensating, by the controller, for the output voltage based on the relationship between the measured output voltage and CT output voltage and compensating for the input voltage by measuring the input current of the DC-DC converter based on the output current of the DC-DC converter into the CT output voltage converted through the current transformer and using an output current map composed of the output voltage and the measured CT voltage. In addition, the output current is estimated using the compensated output voltage and input voltage.

System and method for estimating output current of DC-DC converter

An inverter control apparatus is provided that offers a 'soft turn off' to a gate operation of the inverter so as to securely protect the IGBT. In particular, an inverter control system according to the present invention may include a gate operating portion that controls turn on/off of an IGBT and forcibly turns off the IGBT if a short circuit or an over current is detected from the IGBT, a current buffer that amplifies a control current for the turn on/off of the IGBT that is outputted from the gate operating portion, and a filter that delays the forcible turn off control current that is outputted from the gate operating portion.

Inverter control system

A film capacitor is provided that includes a case in which a film cell is incorporated and a heat radiating plate including a heat absorption unit being positioned adjacent to the film cell while not being in contact with the film cell for absorbing heat and a heat radiating unit being exposed to the outside of the case. Preferred film capacitors can perform a stable operation and have durable lifespan, even when an inverter adopting the film capacitor is mounted on a trunk room and an engine room, by effectively cooling heat generated from a film cell of the film capacitor.

Film capacitor

Growing community of inventors

Incheon, South Korea

Jeongbin Yim