发明授权
- 专利标题： Method and apparatus for dynamically adjusting a dead time of brushless direct current motor during a phase change
- 专利标题（中）： 在相变期间动态地调节无刷直流电机的死区时间的方法和装置
-
申请号： US13570973申请日： 2012-08-09
-
公开(公告)号： US08912744B2公开(公告)日： 2014-12-16
- 发明人: Haó-Yu Chang , Pei-Cheng Huang , Wei-Hsu Chang , Kuo-Chung Lee
- 申请人： Haó-Yu Chang , Pei-Cheng Huang , Wei-Hsu Chang , Kuo-Chung Lee
- 申请人地址： TW Chupei, Hsinchu
- 专利权人： Richtek Technology Corp.
- 当前专利权人： Richtek Technology Corp.
- 当前专利权人地址： TW Chupei, Hsinchu
- 代理机构： Muncy, Geissler, Olds & Lowe, P.C.
- 优先权： TW100128875A 20110812
- 主分类号： H02P6/00
- IPC分类号： H02P6/00 ; H02P6/08 ; H02P6/14 ; H02P7/00
摘要：
A method and apparatus for dynamically adjusting a dead time of a BLDC motor during a phase change detect the winding current of the BLDC motor during the dead time, and terminate the dead time when the winding current is detected to be substantially or close to zero. Thus, the method and apparatus can optimize the dead time and switch the BLDC motor between two phases at a zero-current point, without reducing the maximum rotation speed of the BLDC motor.