公开(公告)号：US20150048769A1

公开(公告)日：2015-02-19

申请号：US14330813

申请日：2014-07-14

申请人： Delta Electronics, Inc.

发明人： Chia-Hao CHANG ,  Yueh-Lung HUANG ,  Yen-Hung CHEN ,  Shih-Yuan CHIANG ,  Feng-Ying LIN

IPC分类号： H02P29/00

CPC分类号： H02P6/08 ,  H02P29/0241 ,  H02P31/00

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20140218828A1

公开(公告)日：2014-08-07

申请号：US14022835

申请日：2013-09-10

申请人： Delta Electronics, Inc.

发明人： Che-Hung LIN ,  Yueh-Lung HUANG ,  Yen-Hung CHEN

IPC分类号： H02H7/09

CPC分类号： H02H7/09 ,  H02H3/207

摘要： A power-protection apparatus is provided. The apparatus includes an over-voltage protection unit for generating an over-voltage detection signal when the power supply of the load is over the upper limit of a predetermined voltage range; an under-voltage protection unit for generating an under-voltage detection signal when the power supply of the load is under the lower limit of the predetermined voltage range; a working-state detection unit for receiving a control signal and generating a working-state detection signal when the level time-change rate of the control signal is over a time-change rate threshold; and a power-control unit coupled to the over-voltage protection unit, the working-state detection unit and the under-voltage protection unit for controlling the on and off of the power supply according to the over-voltage detection signal, the under-voltage detection signal or the working-state detection

摘要翻译： 提供了一种电源保护装置。 该装置包括：过电压保护单元，用于当负载的电源超过预定电压范围的上限时产生过电压检测信号; 欠压保护单元，用于当所述负载的电源处于所述预定电压范围的下限时产生欠电压检测信号; 工作状态检测单元，用于当控制信号的电平时间变化率超过时间变化率阈值时，接收控制信号并产生工作状态检测信号; 以及功率控制单元，其耦合到过电压保护单元，工作状态检测单元和欠压保护单元，用于根据过电压检测信号控制电源的接通和关断， 电压检测信号或工作状态检测

公开(公告)号：US20150152876A1

公开(公告)日：2015-06-04

申请号：US14290496

申请日：2014-05-29

申请人： DELTA ELECTRONICS, INC.

发明人： Jung-Yuan CHEN ,  Yen-Hung CHEN ,  Ching-Sen HSIEH ,  Yueh-Hsin LIU ,  Chen-Chien KAO ,  Shih-Yuan CHIANG ,  Jian-Cun LIN

IPC分类号： F04D27/00 ,  F04D25/06

CPC分类号： F04D27/008 ,  F04D25/06 ,  F04D27/001 ,  F04D27/004

摘要： An anti-air-return fan system includes a motor, a driving control circuit, and a rotation judgment circuit. The driving control circuit is electrically connected to the motor. The driving control circuit has a driving signal for driving the motor to rotate according to the driving signal. The rotation judgment circuit outputs a judgment signal to the driving control circuit when detecting that the motor reversely rotate. The driving control circuit executes a braking according to the judgment signal. The driving control circuit drives the motor to operate when the rotation judgment circuit detects that the motor doesn't rotate reversely.

摘要翻译： 防回风风扇系统包括电动机，驱动控制电路和旋转判断电路。 驱动控制电路电连接到电动机。 驱动控制电路具有用于驱动电机根据驱动信号旋转的驱动信号。 当检测到电动机反向旋转时，旋转判断电路向驱动控制电路输出判断信号。 驱动控制电路根据判断信号进行制动。 当旋转判断电路检测到电动机不反向旋转时，驱动控制电路驱动电动机进行动作。

公开(公告)号：US20130263894A1

公开(公告)日：2013-10-10

申请号：US13666635

申请日：2012-11-01

申请人： DELTA ELECTRONICS, INC.

发明人： Yueh-Lung HUANG ,  Jung-Yuan CHEN ,  Ching-Sen HSIEH ,  Chia-Lin LEE ,  Jian-Cun LIN ,  Yen-Hung CHEN ,  Chia-Ming HSU

IPC分类号： B08B13/00

CPC分类号： H05K7/20209 ,  F04D25/10

摘要： A fan control method includes the steps of: acquiring a control factor; determining whether the control factor is located in a first range or a second range; executing a first dust removing mode if the control factor is located in the first range; executing a second dust removing mode if the control factor is located in the second range; and executing a normal mode if the control factor is not located in the first range and the second range.

摘要翻译： 风扇控制方法包括以下步骤：获取控制因子; 确定所述控制因子是否位于第一范围或第二范围内; 如果控制因素位于第一范围内，则执行第一除尘模式; 如果控制因素位于第二范围内则执行第二除尘模式; 并且如果所述控制因素不位于所述第一范围和所述第二范围内，则执行正常模式。