公开(公告)号：US11050292B2

公开(公告)日：2021-06-29

申请号：US16227323

申请日：2018-12-20

Applicant: DELTA ELECTRONICS, INC.

Inventor： Te-Chih Peng ,  Ming-Hsiang Lo ,  Chia-Hao Chang

IPC: H02J9/06 ,  H02J3/18

Abstract: A redundant power transfer apparatus provides an uninterrupted power transfer for a rear-stage circuit. The redundant power transfer apparatus includes a main loop switch coupled to a main power source, a standby loop switch coupled to a standby power source, and a control unit. The control unit controls the redundant power transfer apparatus to make the main power source or the standby power source supply power to the rear-stage circuit.

公开(公告)号：US11764602B2

公开(公告)日：2023-09-19

申请号：US17331153

申请日：2021-05-26

Applicant: DELTA ELECTRONICS, INC.

Inventor： Te-Chih Peng ,  Ming-Hsiang Lo ,  Chia-Hao Chang

IPC: H02J9/06 ,  H02J3/18

CPC classification number: H02J9/06 ,  H02J3/18 ,  H02J9/068

Abstract: A redundant power transfer apparatus provides an uninterrupted power transfer for a rear-stage circuit. The redundant power transfer apparatus includes a main loop switch coupled to a main power source, a standby loop switch coupled to a standby power source, and a control unit. The control unit controls the redundant power transfer apparatus to make the main power source or the standby power source supply power to the rear-stage circuit.

公开(公告)号：US10651728B2

公开(公告)日：2020-05-12

申请号：US15599450

申请日：2017-05-18

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hsin-Chung Niu ,  Chih-Hong Wu ,  Chia-Hao Chang ,  Ming-Hsiang Lo

IPC: H02M1/42 ,  G05F1/70 ,  G05F5/00 ,  H02M1/36 ,  H02M1/32 ,  H02M1/00

Abstract: A power supply device includes a PF correction circuit, a power switching circuit and a control circuit. The PF correction circuit converts an input voltage to a bus voltage according to a control signal to supply a later stage circuit. The power switching circuit selectively switches to conduct a first source or a second source to the PF correction circuit to provide the input voltage to the PF correction circuit. The control circuit outputs the control signal to the PF correction circuit. When the control circuit detects a first voltage of the first source connecting to the PF correction circuit is abnormal, the control circuit determines whether a second voltage of the second source is smaller than the bus voltage and controls the power switching circuit to switch when the second voltage is smaller than the bus voltage to conduct the second source to the PF correction circuit.

公开(公告)号：US09571016B2

公开(公告)日：2017-02-14

申请号：US14330813

申请日：2014-07-14

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Hao Chang ,  Yueh-Lung Huang ,  Yen-Hung Chen ,  Shih-Yuan Chiang ,  Feng-Ying Lin

IPC: H02P1/30 ,  H02P1/04 ,  H02P6/08 ,  H02P31/00

CPC classification number: H02P6/08 ,  H02P29/0241 ,  H02P31/00

Abstract: A motor control system is disclosed. The motor control system includes a level-shifting unit, a motor unit and a control unit. The level-shifting unit receives an original pulse width modulation (PWM) signal to generate an output PWM signal. When a first high level of the original PWM signal is larger than a first reference value, the level-shifting unit shifts a second high level of the output PWM signal to a set high level. When a first low level of the original PWM signal is lower than a second reference value, the level-shifting unit shifts a second low level of the output PWM signal to a set low level. The control unit controls the speed of the motor according to the output PWM signal.

Abstract translation: 公开了一种电动机控制系统。 电动机控制系统包括电平移动单元，电动机单元和控制单元。 电平移位单元接收原始脉宽调制（PWM）信号以产生输出PWM信号。 当原始PWM信号的第一高电平大于第一参考值时，电平移位单元将输出PWM信号的第二高电平移位到设定的高电平。 当原始PWM信号的第一低电平低于第二参考值时，电平移位单元将输出PWM信号的第二低电平移动到设定的低电平。 控制单元根据输出PWM信号控制电机的速度。