Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Young Kwan Ko

Yong Jae Lee

Jae Wook Ryu

Dong Wan Koo

Hyun Jae Lim

Kun Hoe Chung

Joo Young Park

Jun Mo An

Tae Young Chung

Jae Chun Woo

Jong Su Lim

Gyu Hwan Yon

Nam Gyu Cho

Jang Yoon Jeong

Sung Hun Kim

Young Ho Chae

Ki Hwan Hwang

Man Seok Jeon

Suk Jin Koo

Dong Guk Lee

So-Young Lee

Hoon Hee Han

Jae Young Choi

In Young Choi

Woo Cheol Cho

Hyung Bin Ihm

Jung Mo Yu

Hyung Souk Kang

Tae Joon Kim

Ho Tae Chun

Dae Whang Kim

Ill Young Lee

Byung Hoon Yang

Soo Lim Han

Yoo Jong Lee

Jun Hyuk Choi

Tae Hyun Oh

Byung Kwan Son

Kyung Sung Kim

Young Gi Lee

Won Woo Seo

Dong-Guk Lee

Jun Ho Nam

Nam-Gyu Cho

Mee Young Seok

Jong-Su Lim

Hyun Suk Yeom

Sung Wan Pyo

Ki-Hwan Hwang

Suk-Jin Koo

Sungjun Park

Junhyuk Choi

Jisoo Lim

Kun-Hoe Chung

Jun-Ho Nam

Sung-Hun Kim

Mi-Young Kwak

Jae Min Hwang

Bong Jin Chung

Young Kwon Kim

An electrified vehicle includes a motor including a plurality of windings corresponding to each of phases; an inverter including a DC terminal connected to a main battery, and a plurality of legs connected to each end of the windings; a charging switch connected between one electrode of an auxiliary battery and a neutral terminal of the motor; and a controller configured to turn on the charging switch and to apply a DC offset to each of phase currents of the motor having the phases when the charging mode is performed while driving.

Electrified vehicle and method for controlling the same

An inverter driving device includes an inverter including a plurality of legs corresponding to a plurality of phases, and a controller that generates a plurality of pole voltage commands from a plurality of space vector modulation signals corresponding to the plurality of phases and modulates the pole voltage commands through pulse width modulation to control a turn-on state of switches included in the legs, wherein the controller is configured to generate a plurality of discontinuous modulation signals by applying an offset voltage for discontinuous modulation to the plurality of space vector modulation signals if at least one of a maximum voltage and a minimum voltage of the space vector modulation signals is not included in a predetermined linearity range, adjusts at least one of a maximum voltage and a minimum voltage of the discontinuous modulation signals, and outputs the adjusted discontinuous modulation signals as the pole voltage commands.

Inverter driving device and method of controlling same

An inverter driving apparatus includes an inverter having a plurality of legs respectively corresponding to each of a plurality of phases and the control unit generating space vector modulation signals based on a phase voltage command, each of the space vector modulation signals corresponding to each of the plurality of phases, respectively, determining whether an output voltage of the inverter corresponding to at least one space vector modulation signal of the space vector modulation is in a non-linear region by determining whether each voltage of the space vector modulation signals is included in a predetermined range, generating a terminal voltage command by determining whether or not to apply an offset voltage to each of the space vector modulation signals based on the determination of the non-linear region, and controlling a turn-on state of at least one switch included in each of the plurality of legs by modulating the terminal voltage command based on pulse width modulation.

Inverter driving apparatus and control method thereof

A motor driving apparatus driving a motor that has a plurality of windings respectively corresponding to a plurality of phases includes a first inverter including a plurality of first switching elements and connected to a first end of each of the windings, a second inverter including a plurality of second switching elements and connected to a second end of each of the windings, and a controller determining a voltage command of the first inverter based on a voltage command of the motor and the active vector corresponding to a duty of the second switching elements and controlling the first switching elements through pulse width modulation based on the voltage command of the first inverter.

Motor driving apparatus

A motor driving apparatus driving a motor including a plurality of windings corresponding to each of phases, includes a mode change switch and a plurality of inverters that operate the motor in a closed end winding mode or an open end winding mode; and a controller configured for controlling the mode change switch and the plurality of inverters according to a first mode determination result based on a reverse magnetic flux and a second mode determination result according to an output power limit for each mode.

Motor driving apparatus and method for controlling the same

A motor driving apparatus which drives a motor having a plurality of windings corresponding to a plurality of phases includes: a first inverter having a plurality of first switching elements and connected to a first end of each winding; a second inverter having a plurality of second switching elements and connected to a second end of each winding; and a controller configured to control pulse width modulation, by distributing a preset voltage command of the motor into a voltage command of the first inverter and a voltage command of the second inverter at the same rate and by generating duties of the first switching elements, wherein the controller determines the duties of the second switching elements and determines the duties of the first switching elements on and the duties of the first switching elements.

A control system for reducing drive shaft vibration of an environment-friendly vehicle includes: a drive shaft speed extraction unit that extracts an actual drive shaft speed of a motor and extracts a drive shaft speed from which a forced vibration component that is to be transferred by an engine to the drive shaft is removed; a model speed computation unit that calculates a model speed of the drive shaft; a free vibration computation unit that computes a free vibration component on the basis of deviation between the drive shaft speed and the calculated model speed; and a first torque computation unit that calculates, from the free vibration component, a free vibration reduction compensation torque for reducing the drive shaft vibration.

Control system and method for reducing drive shaft vibration of an environment-friendly vehicle

A method of controlling vibration reduction of a vehicle is capable of efficiently reducing vibration occurring when entering a P range on a ramp. The method includes: when an input to a parking range is received, determining whether or not a predetermined condition for entering a vibration reduction control mode is satisfied; when the entering condition is satisfied, calculating a motor torque for reducing vibration due to backlash by using the driving information; controlling a driving motor so as to output the calculated motor torque; controlling the parking device such that the parking range is engaged; determining whether or not a brake is released; and if the brake is released, reducing a motor torque output by the driving motor so that vibration due to the backlash is reduced.

Method of controlling vibration reduction of vehicle

A method for controlling revolutions per minute (RPM) flare, in which an RPM of a transmission increases due to clutch slip, for a hybrid vehicle can include: determining whether gear-shifting is performed in a transmission of the hybrid vehicle; detecting whether RPM flare of the transmission occurs when it is determined that the gear-shifting is performed; and controlling a torque of a motor of the hybrid vehicle so as to reduce the RPM flare of the transmission by reducing the torque of the motor when the RPM flare of the transmission is detected.

Controlling method of RPM flare of transmission for hybrid vehicle

A method of decreasing vibration during release of a stop gear of a vehicle can be applied to an eco-friendly vehicle for decreasing vibration generated when a driver releases a P step of a gear lever while torsion occurs in a drive shaft of the vehicle. Reaction force torque of a driving motor is controlled so as to output reaction force that has been generated in a parking sprag by a driving motor when torsion occurs in the drive shaft after entrance of the gear lever into the P step, so as to decrease vibration generated because torsion reaction force of the drive shaft vanishes at the same time.

Method of decreasing vibration during release of stop gear of vehicle

A method for reducing vibration of a drive shaft of an eco-friendly vehicle includes calculating a model velocity of the drive shaft, obtaining a vibration component based on a deviation between an actual velocity of the drive shaft and the calculated model velocity, and generating a vibration reduction compensation torque for reduction in vibration of the drive shaft from the vibration component.

Method for reducing drive shaft vibration of eco-friendly vehicle

Growing community of inventors

Seoul, South Korea

Young Kwan Ko