公开(公告)号：US20110227519A1

公开(公告)日：2011-09-22

申请号：US12725976

申请日：2010-03-17

申请人： Alex HORNG ,  Chieh-Feng LEE ,  Tsung-Hsien YEH

发明人： Alex HORNG ,  Chieh-Feng LEE ,  Tsung-Hsien YEH

IPC分类号： H02P6/20 ,  H02P6/18

CPC分类号： H02P6/18 ,  H02P6/21

摘要： A sensorless starting control method for a brushless direct current (BLDC) motor, comprising a first rotor-positioning step configured to position a rotor in a first position by operating a coil unit in a first excitation state, a second rotor-positioning step configured to operate the coil unit in a second excitation state such that the rotor rotates from the first position to a second position, and an open-looped starting step configured to excite a plurality of coils of the coil unit in sequence so as to drive the rotor to rotate in a predetermined direction, wherein the coil unit generates a back electromotive force (EMF) when the rotor rotates in the predetermined direction. The method further comprises a close-looped operation step configured to control the BLDC motor to attain a predetermined rotational speed via a feedback of the back EMF.

摘要翻译： 一种无刷直流电动机的无传感器启动控制方法，包括：第一转子定位步骤，被配置为通过在第一激励状态下操作线圈单元将转子定位在第一位置;第二转子定位步骤，被配置为 在第二激励状态下操作线圈单元，使得转子从第一位置旋转到第二位置，以及开环启动步骤，其被配置为依次激励线圈单元的多个线圈，以驱动转子到 沿预定方向旋转，其中当转子沿预定方向旋转时，线圈单元产生反电动势（EMF）。 该方法还包括一个闭环操作步骤，被配置为通过反电动势的反馈来控制BLDC电机达到预定转速。