公开(公告)号：US20050035676A1

公开(公告)日：2005-02-17

申请号：US10903929

申请日：2004-07-29

Applicant: Khwaja Rahman ,  Silva Hiti ,  Nitinkumar Patel ,  Terence Ward ,  James Nagashima ,  Fabio Crescimbini ,  Federico Caricchi

Inventor： Khwaja Rahman ,  Silva Hiti ,  Nitinkumar Patel ,  Terence Ward ,  James Nagashima ,  Fabio Crescimbini ,  Federico Caricchi

IPC: B60K6/26 ,  H02K1/18 ,  H02K1/27 ,  H02K3/46 ,  H02K7/14 ,  H02K9/22 ,  H02K21/24 ,  H02K29/03 ,  H02K7/06 ,  B60K1/00

CPC classification number: H02K1/2793 ,  B60K6/26 ,  B60K7/0007 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L1/02 ,  B60L3/003 ,  B60L3/0046 ,  B60L3/0061 ,  B60L7/14 ,  B60L11/1803 ,  B60L11/1881 ,  B60L15/025 ,  B60L15/06 ,  B60L15/08 ,  B60L15/20 ,  B60L15/2009 ,  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

Abstract: 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.

Abstract translation: 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。