公开(公告)号：US20230291331A1

公开(公告)日：2023-09-14

申请号：US18198603

申请日：2023-05-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jonghyun SHIN

IPC: H02M7/5387 ,  H02P27/08 ,  H02M1/42

CPC classification number: H02M7/53875 ,  H02P27/08 ,  H02M1/4266

Abstract: An electronic device comprises: a rectifying unit to rectify an input alternating current voltage; a converter to convert the rectified input alternating-current voltage into a direct-current voltage; an inverter including a plurality of switching elements to convert the direct-current voltage into a three-phase alternating current voltage and outputting the three-phase alternating current voltage to a load; a DC link unit located between the converter and the inverter; and a control unit to control the inverter to convert the direct-current voltage into the three-phase alternating-current voltage according to a pulse width modulation (PWM) control signal. The control unit reduces the speed of a load in response to the detecting of a stop signal with respect to the PWM control signal and controls the load to stop a driving of the load in response to the detecting of a change in the link voltage of the DC link unit.

公开(公告)号：US20250062705A1

公开(公告)日：2025-02-20

申请号：US18912164

申请日：2024-10-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Junghoon LEE ,  Youngjae PARK ,  Jonghyun SHIN ,  Taeho LEE ,  Jehyung CHO

IPC: H02P5/74 ,  F24F11/52 ,  F24F11/88 ,  H02P5/50 ,  H02P11/06

Abstract: An air conditioner includes an inverter configured to drive a first motor for driving a first outdoor unit and a second motor for driving a second outdoor unit in parallel, and a processor. The processor is configured to determine parameters of the first motor and parameters of the second motor, compare the parameters of the first motor with the parameters of the second motor to determine whether the parameters differ by at least a certain value, and control the inverter through heterogeneous control for the first motor and the second motor based on the parameters differing by at least a certain value.

公开(公告)号：US20230283191A1

公开(公告)日：2023-09-07

申请号：US18196596

申请日：2023-05-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jonghyun SHIN ,  Youngjae PARK ,  Junghoon LEE ,  Teaho LEE

IPC: H02M7/00 ,  H02M1/00 ,  H02M1/32 ,  H02M5/458 ,  H05K7/20

CPC classification number: H02M7/003 ,  H02M1/0009 ,  H02M1/327 ,  H02M5/458 ,  H05K7/209

Abstract: An electronic device in accordance with one embodiment may include a load that receives power and performs an operation; and a power supply that supplies power to the load, the power supply including: a rectifier configured to rectify an input alternating current (AC) voltage; a converter including at least one first switching element and configured to convert the rectified input AC voltage into a direct current (DC) voltage; an inverter including a plurality of second switching elements and configured to convert the DC voltage into an AC voltage; a plurality of temperature sensors configured to detect the temperature of each of a plurality of switching elements including the at least one first switching element and the plurality of second switching elements; and a processor configured to determine whether a temperature failure occurs in the plurality of switching elements based on a temperature difference between the plurality of switching elements or a temperature variation amount of each of the plurality of switching elements and performs temperature protection control on the plurality of switching elements based on determining that the temperature failure occurs.