公开(公告)号：US09000703B2

公开(公告)日：2015-04-07

申请号：US13687193

申请日：2012-11-28

Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

Inventor： Wei Seng Chew ,  Kaufik Linggajaya

IPC: H02P6/18

CPC classification number: H02P6/182

Abstract: A first input of a differential circuit is coupled to a coil tap for a first phase of a multi-phase brushless DC motor. The first phase is associated with an electrically floating coil. A second input of the differential circuit is coupled to a virtual center tap. A divider circuit is coupled between coil taps for other phases of the multi-phase brushless DC motor to define a virtual center tap. The other phases are phases actuated for motor operation when the first phase is electrically floating. The coil tap for the first phase is electrically isolated from the virtual center tap. The differential circuit performs a comparison of the voltage at the coil tap for the first phase to the voltage at the virtual center tap to generate a back EMF signal.

Abstract translation: 差分电路的第一输入耦合到用于多相无刷直流电动机的第一相的线圈抽头。 第一相与电浮动线圈相关联。 差分电路的第二输入耦合到虚拟中心抽头。 分压器电路耦合在用于多相无刷直流电动机的其它相的线圈抽头之间以限定虚拟中心抽头。 当第一相电浮动时，其他相是电动机运行的相位。 用于第一阶段的线圈分接头与虚拟中心抽头电隔离。 差分电路对第一阶段的线圈抽头的电压与虚拟中心抽头的电压进行比较，以产生反电动势信号。

公开(公告)号：US20150295526A1

公开(公告)日：2015-10-15

申请号：US14248784

申请日：2014-04-09

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Wei Seng Chew ,  Wei Xiong

IPC: H02P6/18

CPC classification number: H02P6/186 ,  H02P6/182 ,  H02P6/185 ,  H02P6/22

Abstract: Methods and apparatus for determining rotor position in a motor including a rotor and stator windings. The method includes measuring inductive sense values for each pair of the stator windings by performing an inductive sense routine on the motor, measuring stator winding voltage values, induced by mutual inductance between windings, for each of the stator windings by performing a mutual inductance sensing routine on the motor, and determining the rotor position based on the inductive sense values and the stator winding voltage values.

Abstract translation: 用于确定包括转子和定子绕组的电动机中的转子位置的方法和装置。 该方法包括通过在电机上执行电感检测程序来测量每对定子绕组的感应感应值，通过执行互感感测程序测量每个定子绕组，测量由绕组之间的互感引起的定子绕组电压值 并且基于感应感应值和定子绕组电压值来确定转子位置。

公开(公告)号：US09379650B2

公开(公告)日：2016-06-28

申请号：US14248784

申请日：2014-04-09

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Wei Seng Chew ,  Wei Xiong

IPC: H02P6/18 ,  H02P21/14 ,  H02P6/22

CPC classification number: H02P6/186 ,  H02P6/182 ,  H02P6/185 ,  H02P6/22

Abstract: Methods and apparatus for determining rotor position in a motor including a rotor and stator windings. The method includes measuring inductive sense values for each pair of the stator windings by performing an inductive sense routine on the motor, measuring stator winding voltage values, induced by mutual inductance between windings, for each of the stator windings by performing a mutual inductance sensing routine on the motor, and determining the rotor position based on the inductive sense values and the stator winding voltage values.

Abstract translation: 用于确定包括转子和定子绕组的电动机中的转子位置的方法和装置。 该方法包括通过在电机上执行电感检测程序来测量每对定子绕组的感应感应值，通过执行互感感测程序测量每个定子绕组，测量由绕组之间的互感引起的定子绕组电压值 并且基于感应感应值和定子绕组电压值来确定转子位置。