公开(公告)号：US20090295316A1

公开(公告)日：2009-12-03

申请号：US12541409

申请日：2009-08-14

申请人： NITINKUMAR R. PATEL ,  SILVA HITI ,  KHWAJA M. RAHMAN

发明人： NITINKUMAR R. PATEL ,  SILVA HITI ,  KHWAJA M. RAHMAN

IPC分类号： H02P21/00

CPC分类号： H02K1/2793 ,  B60K6/26 ,  B60K7/0007 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L1/02 ,  B60L3/003 ,  B60L3/0046 ,  B60L3/0061 ,  B60L7/14 ,  B60L15/025 ,  B60L15/06 ,  B60L15/08 ,  B60L15/20 ,  B60L15/2009 ,  B60L50/51 ,  B60L58/30 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2220/44 ,  B60L2220/50 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/427 ,  B60L2240/429 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  B60L2240/547 ,  B60L2250/26 ,  B60L2270/145 ,  H02K7/14 ,  H02K21/24 ,  H02K29/03 ,  H02P21/06 ,  Y02T10/641 ,  Y02T10/643 ,  Y02T10/644 ,  Y02T10/7241 ,  Y02T10/7275 ,  Y02T90/34

摘要： Methods and apparatus are provided for an electric vehicle embodying an axial flux traction motor directly coupled to a wheel thereof. The traction motor comprises a stator having coils for producing a magnetic field, an annular rotor magnetically coupled to the stator and mechanically to an output shaft. Permanent magnets of alternating polarity are mounted on the annular rotor. Magnetic shunts bridge a portion of the stator slots above the coils. The magnets are arranged in groups with group-to-group spacing exceeding magnet-to-magnet spacing. Adjacent edges of the magnets diverge. The method comprises, looking up d- and q-axis currents to provide the requested torque and motor speed for the available DC voltage, combining at least one of the d- and q-axis currents with a field weakening correction term, converting the result from synchronous to stationary frame and operating an inverter therewith to provide current to the coils of the motor.

摘要翻译： 提供了一种实现轴向通量牵引电动机的电动车辆的方法和装置，其直接联接到其车轮。 牵引电动机包括具有用于产生磁场的线圈的定子，与定子磁耦合并机械地连接到输出轴的环形转子。 交替极性的永磁体安装在环形转子上。 磁分路桥接线圈上方的定子槽的一部分。 磁体以组间距离超过磁体与磁体的间距分组排列。 磁体的相邻边缘发散。 该方法包括：查找d轴和q轴电流以为可用的直流电压提供所要求的转矩和电动机速度，将d轴和q轴电流中的至少一个与弱磁修正项组合，转换结果 从同步到静止的框架并且与其一起操作逆变器以向电动机的线圈提供电流。

公开(公告)号：US20100295491A1

公开(公告)日：2010-11-25

申请号：US12468362

申请日：2009-05-19

申请人： STEVEN E. SCHULZ ,  KHWAJA M. RAHMAN ,  CHIA-CHOU YEH

发明人： STEVEN E. SCHULZ ,  KHWAJA M. RAHMAN ,  CHIA-CHOU YEH

IPC分类号： G01R31/02

CPC分类号： G01R31/346 ,  G01R31/024 ,  G01R31/34

摘要： Systems and methods are provided for identifying a fault condition in stator windings in an electric motor. A method comprises applying a first signal at a first electrical angle to the stator windings and measuring a second signal from the stator windings in response to the first signal. The method further comprises determining a measured response for the electric motor at the first electrical angle based on the second signal and obtaining a nominal response for the electric motor at the first electrical angle. A fault condition is identified when a magnitude of the difference between the measured response and the nominal response is greater than a threshold value.

摘要翻译： 提供了用于识别电动机中定子绕组中的故障状况的系统和方法。 一种方法包括以第一电角施加第一信号到定子绕组，并响应于第一信号测量来自定子绕组的第二信号。 该方法还包括基于第二信号确定第一电角度下的电动机的测量响应，并以第一电角度获得电动机的标称响应。 当测量的响应和标称响应之间的差值的大小大于阈值时，识别故障状况。