公开(公告)号：EP1505719B1

公开(公告)日：2010-10-27

申请号：EP04254754.7

申请日：2004-08-06

Applicant: STMicroelectronics, Inc.

Inventor： Shao, Jianwen ,  Hopkins, Thomas L.

IPC: H02P6/18 ,  H02P1/02 ,  H02P6/22

CPC classification number: H02P6/182 ,  H02P1/029 ,  H02P6/22

公开(公告)号：EP1505719A2

公开(公告)日：2005-02-09

申请号：EP04254754.7

申请日：2004-08-06

Applicant: STMicroelectronics, Inc.

Inventor： Shao, Jianwen ,  Hopkins, Thomas L.

IPC: H02P6/22

CPC classification number: H02P6/182 ,  H02P1/029 ,  H02P6/22

Abstract: A device and method that determine a freewheeling rotation of an electric motor. The method includes steps of measuring first and second signals from respective first and second windings of an unenergized motor, and determining from the first and second signals whether the unenergized motor is rotating. The method may also include determining from the first and second signals the direction of rotation if the unenergized motor is rotating. The method may further include measuring a third signal from a third winding of the unenergized motor, and determining whether the motor is rotating may include determining that the motor is not rotating if the first, second, and third signals are equal. The first and second signals may each comprise a respective back voltage.

Abstract translation: 确定电动机的续流旋转的装置和方法。 该方法包括以下步骤：测量未通电电动机的相应第一和第二绕组的第一和第二信号，以及根据第一和第二信号确定未通电电动机是否正在旋转。 该方法还可以包括如果未通电的电动机正在旋转，则从第一和第二信号确定旋转方向。 该方法还可以包括从未通电电动机的第三绕组测量第三信号，并且确定电动机是否正在旋转可以包括如果第一，第二和第三信号相等则确定电动机不旋转。 第一和第二信号可以各自包括相应的反向电压。

公开(公告)号：EP1505719A3

公开(公告)日：2009-05-13

申请号：EP04254754.7

申请日：2004-08-06

Applicant: STMicroelectronics, Inc.

Inventor： Shao, Jianwen ,  Hopkins, Thomas L.

IPC: H02P6/18 ,  H02P1/02 ,  H02P6/22

CPC classification number: H02P6/182 ,  H02P1/029 ,  H02P6/22

Abstract: A device and method that determine a freewheeling rotation of an electric motor. The method includes steps of measuring first and second signals from respective first and second windings of an unenergized motor, and determining from the first and second signals whether the unenergized motor is rotating. The method may also include determining from the first and second signals the direction of rotation if the unenergized motor is rotating. The method may further include measuring a third signal from a third winding of the unenergized motor, and determining whether the motor is rotating may include determining that the motor is not rotating if the first, second, and third signals are equal. The first and second signals may each comprise a respective back voltage.