公开(公告)号：US09899945B2

公开(公告)日：2018-02-20

申请号：US15232855

申请日：2016-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Minho Jang ,  Junho Lee ,  Chungill Lee

IPC: H02P21/00 ,  H02P21/18 ,  H02P6/18 ,  H02P6/20 ,  H02P6/22 ,  H02P27/06

CPC classification number: H02P21/18 ,  H02P6/183 ,  H02P6/20 ,  H02P6/22 ,  H02P27/06

Abstract: 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.

公开(公告)号：US09170285B2

公开(公告)日：2015-10-27

申请号：US13904519

申请日：2013-05-29

Applicant: LG Electronics Inc.

Inventor： Namki Lee ,  Chungill Lee

IPC: G01R22/06 ,  G01R22/00

CPC classification number: G01R21/00 ,  G01R22/00 ,  G01R22/06 ,  G01R22/063 ,  G01R22/10

Abstract: An appliance includes an operation unit that is mounted in a case of the appliance that is supplied power by an external power supply and that includes at least one of a motor and a heating member. The appliance further includes a control circuit mounted in the case of the appliance and configured to control the operation unit to perform appliance functionality that is different than measuring power. The appliance further includes a power meter coupled to the control circuit, built into the case, and configured to measure power consumed by the appliance in performing the appliance functionality.

Abstract translation: 一种器具包括操作单元，该操作单元安装在由外部电源供电并且包括电动机和加热构件中的至少一个的设备的壳体中。 该设备还包括安装在设备的情况下并被配置为控制操作单元以执行不同于测量功率的设备功能的控制电路。 该设备还包括耦合到控制电路的功率计，内置在壳体中，并且被配置为测量在执行设备功能性时由设备消耗的功率。