利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.012 秒)

    Single phase brushless DC motor and method of adjusting output phase thereof
    2.
    发明授权
    Single phase brushless DC motor and method of adjusting output phase thereof 有权

    公开(公告)号：US09780705B2

    公开(公告)日：2017-10-03

    申请号：US15004991

    申请日：2016-01-24

    申请人： DELTA ELECTRONICS, INC.

    发明人： Yi-Fan Lin ,  Chien-Sheng Lin ,  Chung-Hung Tang ,  Chun-Lung Chiu

    IPC分类号： H02P6/26 ,  H02P6/16 ,  H02P6/15

    CPC分类号： H02P6/16 ,  H02P6/157 ,  H02P6/26

    摘要： 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.

    Driving circuit and driving method thereof
    4.
    发明授权
    Driving circuit and driving method thereof 有权
    驱动电路及其驱动方法

    公开(公告)号：US09344017B2

    公开(公告)日：2016-05-17

    申请号：US14501659

    申请日：2014-09-30

    申请人： DELTA ELECTRONICS, INC.

    发明人： Chung-Hung Tang ,  Chien-Sheng Lin ,  Chin-Fa Chiu ,  Chun-Lung Chiu

    IPC分类号： H02P6/00 ,  H02P6/08 ,  H02P25/18

    CPC分类号： H02P6/26 ,  H02P6/085 ,  H02P25/188

    摘要： 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.

    摘要翻译： 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。