公开(公告)号：US20180054089A1

公开(公告)日：2018-02-22

申请号：US15800900

申请日：2017-11-01

申请人： LG ELECTRONICS INC. ,  RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY

发明人： Soongkeun LEE ,  Chungill LEE ,  Seonwook PARK ,  Sungwoo BAE ,  Jaejung YUN ,  Jeongtae KIM ,  Younggeun LEE

IPC分类号： H02P27/08 ,  H02P21/22 ,  G09G5/00 ,  H04L5/14 ,  H04W4/00

CPC分类号： H02J50/10 ,  G09G5/003 ,  G09G5/006 ,  G09G5/36 ,  G09G2330/02 ,  G09G2370/16 ,  H02J50/12 ,  H02J50/80 ,  H02P21/24 ,  H04W4/80

摘要： A home appliance is disclosed, including a first circuit unit including a converter configured to convert an Alternating Current (AC) power into a Direct Current (DC) power, a first coil, a first modulator/demodulator configured to wirelessly transmit the DC power generated by the converter using the first coil, and a first controller configured to control the first modulator/demodulator, and a second circuit including a second coil configured to receive a wireless power transmitted by the first circuit unit, a second modulator/demodulator configured to convert the wireless power received from the second coil, a rectifier configured to rectify an AC power generated by the second modulator/demodulator, and a second controller configured to control operation of the second modulator/demodulator, wherein the first modulator/demodulator and the second modulator/demodulator perform bidirectional time-division data communication.

公开(公告)号：US20170047876A1

公开(公告)日：2017-02-16

申请号：US15232862

申请日：2016-08-10

申请人： LG ELECTRONICS INC. ,  Research Cooperation Foundation of Yeungnam University

发明人： Soongkeun LEE ,  Chungill LEE ,  Seonwook PARK ,  Sungwoo BAE ,  Jaejung YUN ,  Jeongtae KIM ,  Younggeun LEE

IPC分类号： H02P21/18 ,  H02P27/06 ,  H02P6/20

CPC分类号： H02P21/18 ,  H02J50/10 ,  H02J50/80 ,  H02P6/20 ,  H02P27/06

摘要： A motor driving apparatus included in a home appliance may include an inverter to convert a direct current (DC) power into an alternating current (AC) power through a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, a controller to control the inverter, wherein, during a first interval after the motor stops, the controller controls a phase current of a predetermined frequency to flow through the motor to estimate a position of a rotor of the motor, and estimates the position of the rotor of the motor based on the detected output current while the phase current of the predetermined frequency flows through the motor. Thereby, the sensorless motor driving apparatus can easily estimate the position of the motor rotor.