Electric submersible pumps
    8.
    发明申请
    Electric submersible pumps 有权
    电潜泵

    公开(公告)号:US20060175064A1

    公开(公告)日:2006-08-10

    申请号:US10562072

    申请日:2004-06-21

    申请人: Michael Yuratich

    发明人: Michael Yuratich

    IPC分类号: E21B43/00

    摘要: An electric submersible pump contains an AC permanent magnet motor having three or more phases A, B, C and has a drive circuit for supplying varying drive signals to all the phases of the motor at the same time. Each drive signal is constituted by a cyclically smoothly varying voltage applied to the corresponding motor phase during driving of the motor. The circuit comprises switches (902, 903) for each motor phase, a control arrangement for turning the switches (902, 903) on and off at a frequency greater than the frequency of the cyclically smoothly varying voltages, and a filter (907, 908) for filtering the output voltages of the switches (902, 903) to produce the cyclically smoothly varying voltages. Such a drive circuit drives all the phases of the motor continuously such that damaging transients will not arise and without requiring the motor emf or drive signals to be sinusoidal.

    摘要翻译: 电潜泵包含具有三相或更多相A,B,C的交流永磁电动机,并具有驱动电路,用于同时向电动机的所有相提供变化的驱动信号。 每个驱动信号由驱动电动机期间施加到相应的电动机相位的循环平滑变化的电压构成。 该电路包括用于每个电动机相位的开关(902,903),用于以大于循环平滑变化电压的频率的频率接通和关断开关(902,903)的控制装置,以及滤波器(907,908) ),用于对开关(902,903)的输出电压进行滤波,以产生周期性平滑变化的电压。 这种驱动电路连续地驱动电动机的所有相,使得不会产生损坏的瞬变,并且不需要电动机电动势或驱动信号为正弦曲线。