公开(公告)号：US20170331408A1

公开(公告)日：2017-11-16

申请号：US15667455

申请日：2017-08-02

Applicant: LG ELECTRONICS INC.

Inventor： Gilsu LEE ,  Naechun PARK ,  Kyunghoon LEE ,  Sungbae SONG

IPC: H02P27/08 ,  H02P21/18 ,  H02P21/22 ,  H02P21/34

CPC classification number: H02P27/08 ,  H02P1/04 ,  H02P6/16 ,  H02P21/18 ,  H02P21/22 ,  H02P21/24 ,  H02P21/34

Abstract: A motor driving apparatus including a motor including a stator and a rotor rotating in the stator, an inverter configured to supply a driving voltage to a stator coil wound on the stator so as to rotate the rotor, and a control unit configured to, when a target command value is received, change a predetermined reference start-up time point to a start-up time point corresponding to an electrical angle position of the rotor in correspondence with the target command value per rotation of the rotor and to control the inverter to supply the driving voltage at the start-up time point.

公开(公告)号：US20180026486A1

公开(公告)日：2018-01-25

申请号：US15547174

申请日：2016-01-28

Applicant: LG ELECTRONICS INC.

Inventor： Changhum JO ,  Kyunghoon LEE ,  Kwangyong JANG ,  Jongwon KIM

IPC: H02K1/27 ,  A47L9/22 ,  H02K1/28

CPC classification number: H02K1/278 ,  A47L9/22 ,  H02K1/28

Abstract: A brushless direct current (BLDC) motor is disclosed. The BLDC motor includes a shaft made of a nonmagnetic material, a plurality of magnets surrounding the outer circumference of the shaft, a stator surrounding the outer circumferences of the magnets, wherein each of the magnets has an arc-shaped outer circumferential surface, an arc-shaped inner circumferential surface facing the shaft, and opposite side surfaces facing other adjacent magnets, and the magnets include a first magnet magnetized in a direction directed from the outer circumferential surface to the inner circumferential surface, a second magnet magnetized in a direction directed from the inner circumferential surface to the outer circumferential surface, and a third magnet magnetized in a direction directed from one side surface to the other side surface. The efficiency of the motor is improved while eddy current loss is minimized.

公开(公告)号：US20160233812A1

公开(公告)日：2016-08-11

申请号：US15041659

申请日：2016-02-11

Applicant: LG ELECTRONICS INC.

Inventor： Gilsu LEE ,  Naechun PARK ,  Kyunghoon LEE ,  Sungbae SONG

IPC: H02P27/08 ,  H02P1/04 ,  H02P6/16 ,  H02P21/22 ,  H02P21/18

CPC classification number: H02P27/08 ,  H02P1/04 ,  H02P6/16 ,  H02P21/18 ,  H02P21/22 ,  H02P21/24 ,  H02P21/34

Abstract: A motor driving apparatus including a motor including a stator and a rotor rotating in the stator, an inverter configured to supply a driving voltage to a stator coil wound on the stator so as to rotate the rotor, and a control unit configured to, when a target command value is received, change a predetermined reference start-up time point to a start-up time point corresponding to an electrical angle position of the rotor in correspondence with the target command value per rotation of the rotor and to control the inverter to supply the driving voltage at the start-up time point.

Abstract translation: 一种电动机驱动装置，包括：电动机，其包括定子和在所述定子中旋转的转子;反相器，被配置为向缠绕在所述定子上的定子线圈提供驱动电压以使所述转子旋转;以及控制单元， 接收目标指令值，将预定的基准起动时间点改变为对应于转子的每个旋转目标指令值对应于转子的电气角度位置的启动时间点，并控制逆变器供应 启动时间点的驱动电压。

公开(公告)号：US20160181894A1

公开(公告)日：2016-06-23

申请号：US14978844

申请日：2015-12-22

Applicant: LG ELECTRONICS INC.

Inventor： Jundae LEE ,  Jongwon KIM ,  Kyunghoon LEE

IPC: H02K11/33 ,  H02K11/02 ,  H05K1/18 ,  H05K1/09 ,  H05K1/11 ,  H02K11/25 ,  H05K7/20

Abstract: Embodiments provide a printed circuit board including a copper foil layer to form a circuit pattern on a base layer, and an insulation layer laminated on the copper foil layer, and wherein the circuit pattern includes a solder pattern, to which an inverter switch element is soldered to supply drive power to a motor, a heat radiation pattern spaced apart from the solder pattern and to contact with one surface of the inverter switch element so as to absorb and radiate heat in the inverter switch element, a heat circulation pattern, through which the heat absorbed by the heat radiation pattern is circulated, and an element pattern formed on both sides of the heat circulation pattern to allow a thermistor element, a resistance value of which is varied according to the heat, to be soldered to the element pattern.

Abstract translation: 实施例提供了一种印刷电路板，其包括在基底层上形成电路图案的铜箔层和层压在铜箔层上的绝缘层，并且其中电路图案包括焊接图案，逆变器开关元件被焊接到该焊料图案 向马达提供驱动力，与焊料图形间隔开的散热图案，并与逆变器开关元件的一个表面接触，以便吸收和辐射逆变器开关元件中的热量，热循环图案 由热辐射图形吸收的热量循环，并且形成在热循环图案两侧的元件图案，以允许热敏电阻元件（其电阻值根据热量而变化）被焊接到元件图案。