公开(公告)号：US20170310263A1

公开(公告)日：2017-10-26

申请号：US15136479

申请日：2016-04-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： CHANDRA S. NAMUDURI ,  LEI HAO

IPC: H02P25/18 ,  H02P25/22 ,  H02P25/022

CPC classification number: H02P25/188 ,  H02P25/022 ,  H02P25/22

Abstract: An electric drive system for a three-phase PM electric machine. The drive system includes a split stator winding for each phase of the machine including a first winding section and a second winding section, and an inverter circuit including a pair of inverter switches for each phase, where the pair of inverter switches for each phase is electrically coupled to the first and second winding sections for that phase in the stator. The drive system also includes a switching system including a switch circuit, where the switch circuit includes a plurality of switch assemblies for switching between a full winding control mode and a half winding control mode, where each switch assembly includes a first AC switching device and a second AC switching device, and where each switch assembly is electrically coupled to the pair of inverter switches and the first and second winding sections for a particular phase.

公开(公告)号：US20160028280A1

公开(公告)日：2016-01-28

申请号：US14337833

申请日：2014-07-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： THOMAS W. NEHL ,  LEI HAO ,  RAJEEV VYAS ,  CHANDRA S. NAMUDURI ,  MICHAEL G. REYNOLDS

IPC: H02K1/27

CPC classification number: H02K1/2773 ,  H02K1/246 ,  H02K1/276 ,  H02K1/2766

Abstract: A rotor of a permanent magnet synchronous machine includes a rotor core structure. A first set of apertures are formed in a first radial layer of the rotor core structure having a first set of permanent magnets disposed therein forming respective poles. A second set of apertures formed in a second radial layer of the rotor core structure of each pole. A third set of apertures is formed in a third radial layer of the rotor core structure. A second set of permanent magnets is inserted within the third set of apertures. A plurality of bridges each extends across a respective side of each of the third set of apertures in the third radial layer. The plurality of bridges provides structural support of the rotor core structure when operating. The plurality of bridges are integrally formed as single-piece laminations.

Abstract translation: 永磁同步电机的转子包括转子铁心结构。 第一组孔形成在转子芯结构的第一径向层中，其具有设置在其中的第一组永磁体，形成相应的极。 形成在每个极的转子芯结构的第二径向层中的第二组孔。 在转子芯结构的第三径向层中形成第三组孔。 第二组永磁体插入第三组孔内。 多个桥各自延伸穿过第三径向层中的第三组孔中的每一个的相应侧。 当操作时，多个桥提供转子芯结构的结构支撑。 多个桥整体形成为单件叠片。

公开(公告)号：US20170077848A1

公开(公告)日：2017-03-16

申请号：US14854187

申请日：2015-09-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SURESH GOPALAKRISHNAN ,  CHANDRA S. NAMUDURI ,  LEI HAO ,  ALEXANDRU RAJALA

IPC: H02P6/16 ,  H02K11/215

CPC classification number: H02P6/16 ,  H02K11/215

Abstract: A transmission assembly has an integrated torque machine including a torque machine stator and a torque machine rotor. The torque machine rotor includes at least one set of rotor magnets. An integrated rotational position sensor is configured to monitor rotational position of the torque machine rotor in relation to the torque machine stator. The integrated rotational position sensor includes a sensor rotor element and a sensor stator element. The sensor rotor element includes at least one set of sensor rotor magnets. The sensor rotor element is positioned such that the at least one set of sensor rotor magnets are aligned with respect to a rotor pole of the at least one set of rotor magnets of the torque machine rotor. The sensor stator element is positioned such that the sensor stator element is aligned with a magnetic axis of the torque machine stator.

Abstract translation: 传动组件具有集成的扭矩机，其包括扭矩机定子和扭矩机转子。 转矩机转子包括至少一组转子磁体。 集成旋转位置传感器被配置为监测转矩机转子相对于转矩机定子的转动位置。 集成旋转位置传感器包括传感器转子元件和传感器定子元件。 传感器转子元件包括至少一组传感器转子磁体。 传感器转子元件被定位成使得至少一组传感器转子磁体相对于转矩机转子的至少一组转子磁体的转子极对准。 传感器定子元件被定位成使得传感器定子元件与扭矩机定子的磁轴对准。

公开(公告)号：US20160241089A1

公开(公告)日：2016-08-18

申请号：US14624912

申请日：2015-02-18

Applicant: GM Global Technology Operations LLC

Inventor： MURALI PANDI ,  LEI HAO

IPC: H02K1/02 ,  H02K1/27

CPC classification number: H02K1/02 ,  H02K1/2766

Abstract: The disclosure may generally relate to a motor which may include a rotor core which may include a first rotor lamination portion and a second rotor lamination portion. At least one magnet may be operably coupled to the first rotor lamination. The first rotor lamination may be in contact with the at least one magnet and the second rotor lamination may not be in contact with the at least one magnet. Additionally, the first rotor lamination and the second rotor lamination may be comprised of different materials.

Abstract translation: 本公开通常涉及可包括可包括第一转子叠片部分和第二转子叠片部分的转子芯的电动机。 至少一个磁体可以可操作地耦合到第一转子叠片。 第一转子层叠可以与至少一个磁体接触，并且第二转子层压体可以不与至少一个磁体接触。 此外，第一转子叠片和第二转子层压可以由不同的材料组成。

公开(公告)号：US20160028281A1

公开(公告)日：2016-01-28

申请号：US14337864

申请日：2014-07-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： LEI HAO ,  THOMAS W. NEHL ,  CHANDRA S. NAMUDURI ,  MICHAEL G. REYNOLDS ,  ALEXANDRU RAJALA

IPC: H02K1/27

CPC classification number: H02K1/2766 ,  H02K1/276

Abstract: A rotor for a permanent magnet synchronous machine that includes a rotor core structure. A first set of permanent magnets forms poles within the rotor core structure. Each pole includes a pair of permanent magnets from the first set of permanent magnets. A first set of apertures is formed in a first radial layer of the rotor core structure. Each pole includes a pair of apertures from the first set of apertures. The first set of permanent magnets is inserted within the first set of apertures. Each pair of permanent magnets within a pole cooperatively generates a magnetic field in a same direction within the pole. The magnetic field generated by a respective pair of magnets in a respective pole is opposite to a magnetic field generated by a pair of permanent magnets in an adjacent pole.

Abstract translation: 一种用于永磁同步电机的转子，其包括转子芯结构。 第一组永磁体在转子芯结构内形成极。 每个极包括来自第一组永磁体的一对永磁体。 在转子芯结构的第一径向层中形成第一组孔。 每个杆包括来自第一组孔的一对孔。 第一组永磁体被插入第一组孔内。 杆内的每对永磁体在极内协同地产生相同方向的磁场。 由相应磁极中的相应磁体产生的磁场与相邻磁极中的一对永磁体产生的磁场相反。

公开(公告)号：US20160028279A1

公开(公告)日：2016-01-28

申请号：US14337820

申请日：2014-07-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： LEI HAO ,  THOMAS W. NEHL

IPC: H02K1/27 ,  H02K1/02

CPC classification number: H02K1/2766 ,  H02K1/02 ,  H02K2213/03

Abstract: A rotor for a permanent magnet synchronous machine. A first layer of cavities formed circumferentially within the rotor core structure. Pairs of the cavities in the first layer form V-shaped configurations and are spaced circumferentially about the rotor core structure in the first layer. A second layer of cavities is formed circumferentially within the rotor core structure. Pairs of the cavities in the second layer form V-shaped configurations and are spaced circumferentially about the rotor core structure in the second layer. A first set of permanent magnets is inserted within each cavity in the first layer and a second set of permanent magnets inserted within each cavity in the second layer. Each respective V-shaped configuration of the second layer having permanent magnets disposed therein extend greater than half a radial distance from the outer cylindrical wall to the inner cylindrical wall.

Abstract translation: 永磁同步电机转子。 在转子芯结构内圆周形成的第一层腔。 第一层中的一对空腔形成V形构造并且围绕第一层中的转子芯结构周向间隔开。 在转子芯结构内周向形成第二层空腔。 第二层中的空腔的对形成V形构造，并且在第二层中围绕转子芯结构周向间隔开。 将第一组永磁体插入第一层中的每个空腔内，并将第二组永磁体插入第二层中的每个空腔内。 具有设置在其中的永磁体的第二层的每个相应的V形构造延伸大于从外圆柱形壁到内圆柱形壁的半径距离。

公开(公告)号：US20140191697A1

公开(公告)日：2014-07-10

申请号：US13738123

申请日：2013-01-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： XIAOFENG MAO ,  LEI HAO

IPC: H02P29/02

CPC classification number: H02P29/021 ,  H02P29/0241

Abstract: Systems and methods are provided for diagnosing stator windings in an electric motor. An exemplary method for diagnosing stator windings in an electric motor involves determining an input energy imbalance across phases of the stator windings for an electrical period of the electric motor and identifying a fault condition when the input energy imbalance is greater than a first threshold value. In some embodiments, an input energy ratio across phases of the stator windings is also determined for the electrical period, wherein the fault condition is identified as a phase-to-phase short circuit fault condition when the input energy ratio is greater than a second threshold value and the input energy imbalance is greater than the first threshold value, or alternatively, as an in-phase short circuit fault condition when the input energy ratio is less than the second threshold value.

Abstract translation: 提供了用于诊断电动机中的定子绕组的系统和方法。 用于诊断电动机中的定子绕组的示例性方法包括在电动机的电周期内确定跨过定子绕组的相位的输入能量不平衡，并且当输入能量不平衡大于第一阈值时识别故障状况。 在一些实施例中，也为电气周期确定定子绕组两相的输入能量比，其中当输入能量比大于第二阈值时，将故障状态识别为相间短路故障条件 值和输入能量不平衡大于第一阈值，或者当输入能量比小于第二阈值时，作为同相短路故障条件。