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    METHOD OF ADAPTIVELY CONTROLLING BRUSHLESS DC MOTOR
    1.
    发明申请
    METHOD OF ADAPTIVELY CONTROLLING BRUSHLESS DC MOTOR 有权

    公开(公告)号：US20220416695A1

    公开(公告)日：2022-12-29

    申请号：US17893778

    申请日：2022-08-23

    Applicant: DELTA ELECTRONICS, INC.

    Inventor： Chia-Feng WU ,  Chien-Sheng LIN ,  Jou-Sheng WANG

    IPC: H02P6/14 ,  G01M13/04 ,  H02P29/024 ,  G08B21/18

    Abstract: A method of adaptively controlling a brushless DC motor includes steps of: controlling the brushless DC motor rotating at a first speed according to an operation curve, accumulating a running time of the brushless DC motor, estimating a remaining used time of a bearing of the brushless DC motor according to the accumulated running time, executing an alarm operation when the remaining used time is less than a predetermined time, and decreasing the speed of the brushless DC motor to run at a second speed to prolong the used time of the bearing.

    MOTOR DRIVE CIRCUIT, METHOD FOR DETECTING SINGLE PHASE DC MOTOR ROTATION DIRECTION AND METHOD FOR STARTING MOTOR
    3.
    发明申请
    MOTOR DRIVE CIRCUIT, METHOD FOR DETECTING SINGLE PHASE DC MOTOR ROTATION DIRECTION AND METHOD FOR STARTING MOTOR 有权
    电动机驱动电路，检测单相直流电动机转动方向的方法和启动电动机的方法

    公开(公告)号：US20160087559A1

    公开(公告)日：2016-03-24

    申请号：US14831461

    申请日：2015-08-20

    Applicant: DELTA ELECTRONICS, INC.

    Inventor： Yu-Liang LIN ,  Chung-Hung TANG ,  Cheng-Chieh LIU ,  Chien-Sheng LIN ,  Chun-Lung CHIU

    IPC: H02P6/00 ,  H02P6/20 ,  G01D5/14 ,  H02P6/18

    CPC classification number: H02P6/26 ,  G01D5/145 ,  H02P6/182 ,  H02P6/20

    Abstract: A motor drive circuit including a back electromotive force detecting module and a processing module is disclosed herein. The back electromotive force detecting module is electrically connected to a single phase DC motor and is configured to detect a back electromotive force of the single phase DC motor and to output a detecting signal correspondingly. The processing module is electrically connected to the back electromotive force detecting module and the single phase DC motor. The processing module is configured to determine the rotation direction of the single phase DC motor according to the detecting signal and a hall signal outputted by a hall element located in the single phase DC motor, and is configured to control the single phase DC motor.

    Abstract translation: 本文公开了一种包括反电动势检测模块和处理模块的电动机驱动电路。 反电动势检测模块电连接到单相DC电动机，并且被配置为检测单相DC电动机的反电动势并相应地输出检测信号。 处理模块电连接到反电动势检测模块和单相直流电动机。 处理模块被配置为根据检测信号和由位于单相DC电动机中的霍尔元件输出的霍尔信号来确定单相DC电动机的旋转方向，并且被配置为控制单相DC电动机。

    DRIVING CIRCUIT AND DRIVING METHOD THEREOF
    4.
    发明申请
    DRIVING CIRCUIT AND DRIVING METHOD THEREOF 有权
    驱动电路及其驱动方法

    公开(公告)号：US20150244295A1

    公开(公告)日：2015-08-27

    申请号：US14501659

    申请日：2014-09-30

    Applicant: DELTA ELECTRONICS, INC.

    Inventor： Chung-Hung TANG ,  Chien-Sheng LIN ,  Chin-Fa CHIU ,  Chun-Lung CHIU

    IPC: H02P6/00 ,  H02P7/00 ,  H02P6/08

    CPC classification number: H02P6/26 ,  H02P6/085 ,  H02P25/188

    Abstract: A driving circuit drives a motor containing a first coil and a second coil. The driving circuit includes a switching unit, an operation unit and a control unit. The switching unit receives a switching signal from the control unit for driving the motor. The control unit detects the rotation speed of the motor. When the rotation speed of the motor is greater than a predetermined rotation speed, the control unit outputs a first operation signal to the operation unit to couple the first terminals of the first and second coils and couple the second terminals of the first and second coils. When the rotation speed of the motor is less than or equal to the predetermined rotational speed, the control unit outputs a second operation signal to the operation unit to couple the second terminal of the first coil to the first terminal of the second coil.

    Abstract translation: 驱动电路驱动包含第一线圈和第二线圈的马达。 驱动电路包括切换单元，操作单元和控制单元。 切换单元从控制单元接收用于驱动马达的切换信号。 控制单元检测电动机的转速。 当电动机的转速大于预定转速时，控制单元向操作单元输出第一操作信号，以耦合第一和第二线圈的第一端子并耦合第一和第二线圈的第二端子。 当电机的转速小于或等于预定转速时，控制单元向操作单元输出第二操作信号，以将第一线圈的第二端子耦合到第二线圈的第一端子。

    SINGLE PHASE BRUSHLESS DC MOTOR AND METHOD OF ADJUSTING OUTPUT PHASE THEREOF
    6.
    发明申请
    SINGLE PHASE BRUSHLESS DC MOTOR AND METHOD OF ADJUSTING OUTPUT PHASE THEREOF 有权

    公开(公告)号：US20170141707A1

    公开(公告)日：2017-05-18

    申请号：US15004991

    申请日：2016-01-24

    Applicant: DELTA ELECTRONICS, INC.

    Inventor： Yi-Fan LIN ,  Chien-Sheng LIN ,  Chung-Hung TANG ,  Chun-Lung CHIU

    IPC: H02P6/00 ,  H02P6/16

    CPC classification number: H02P6/16 ,  H02P6/157 ,  H02P6/26

    Abstract: A single phase brushless DC motor comprises a Hall effect sensor, a coil assembly and a motor control circuit which generating a driving signal to guide a coil current flowing through the coil assembly. The Hall effect sensor senses the magnetic pole of the rotor to accordingly generate a Hall effect signal. The motor control circuit outputs a current polarity reverse signal according to the voltage at one end of the coil assembly. The time when the current polarity reverse signal is generated corresponds to the polarity reverse time of the coil current. The motor control circuit adjusts the phase of the driving signal according to the polarity reverse time of the Hall effect signal and the time when the current polarity reverse signal is generated to synchronize the phase of the back emf of the single phase brushless DC motor with the phase of the coil current.

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