公开(公告)号：US10189470B2

公开(公告)日：2019-01-29

申请号：US15239004

申请日：2016-08-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Venkata Prasad Atluri ,  Peter Beller ,  Norman K. Bucknor ,  Tito R. Huffman ,  Derek F. Lahr ,  Chunhao J. Lee ,  Dongxu Li ,  Chandra S. Namuduri ,  Thomas W. Nehl ,  Madhusudan Raghavan ,  Alexandru Rajala ,  Farzad Samie ,  Neeraj S. Shidore

IPC: B60W20/40 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/30 ,  B60K6/48 ,  B60K6/543 ,  B60K6/40 ,  B60W10/04 ,  B60W20/20

Abstract: A vehicle propulsion system includes an engine and a first electric machine each configured to selectively provide torque to propel the vehicle. A second electric machine is coupled to the engine to provide torque to start the engine from an inactive state. A high-voltage power source is configured to power both of the first electric machine and the second electric machine over a high-voltage bus. A propulsion controller is programmed to start the engine using cranking torque output from the second electric machine powered by the high-voltage power source. The controller is also programmed to operate both of the first electric machine and the combustion engine to propel the vehicle in response to an acceleration demand greater than a threshold. The controller is further programmed to decouple the engine and propel the vehicle using the first electric machine in response to vehicle speed less than a speed threshold.

公开(公告)号：US10110103B1

公开(公告)日：2018-10-23

申请号：US15629166

申请日：2017-06-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Hao ,  Chandra S. Namuduri ,  Suresh Gopalakrishnan ,  Thomas W. Nehl

IPC: G05B11/28 ,  H02K19/10 ,  H02M3/338 ,  B60K6/46 ,  H02P6/06 ,  H02K29/08 ,  H02K19/20

Abstract: An electric drive system includes bus rails carrying a bus voltage, an energy storage system (ESS), and a power inverter. The system includes a voltage converter connected to the bus rails and having an inductor coil, semiconductor switches, a bypass switch connected to a positive bus rail, and a capacitor. A polyphase electric machine is electrically connected to the power inverter. A controller executes a method in which operation of the converter is regulated based on power, torque, and speed values of the electric machine. The converter is selectively bypassed by closing the bypass switch under predetermined high-power/high-torque conditions, with the bus voltage adjusted until it is equal to the battery output voltage. The bypass switch is opened and the bus voltage thereafter regulated to a predetermined voltage.

公开(公告)号：US20170335816A1

公开(公告)日：2017-11-23

申请号：US15159058

申请日：2016-05-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Hao ,  Chandra S. Namuduri ,  Thomas W. Nehl

IPC: F02N11/08 ,  B60L11/18 ,  B60K6/48 ,  F02N11/04

CPC classification number: F02N11/08 ,  B60K6/387 ,  B60K6/48 ,  B60K2006/4825 ,  B60L11/1803 ,  B60L11/1851 ,  F02N11/04 ,  F02N2200/041 ,  F02N2300/106 ,  F02N2300/20

Abstract: A vehicle propulsion system includes an engine and a first electric machine each configured to selectively provide torque to propel the vehicle. The propulsion system also includes a second electric machine coupled to the engine and configured to start the engine from an inactive state. A controller is programmed to execute a first control algorithm while output speed of the second electric machine is less than a first speed threshold. The controller is also programmed to execute a second control algorithm while output speed of the second electric machine is greater than the first speed threshold and less than a second speed threshold.

公开(公告)号：US20170334422A1

公开(公告)日：2017-11-23

申请号：US15159070

申请日：2016-05-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chandra S. Namuduri ,  Lei Hao ,  Suresh Gopalakrishnan ,  Thomas W. Nehl

IPC: B60W20/10 ,  B60K6/26 ,  B60K6/442

CPC classification number: B60W20/10 ,  B60K6/26 ,  B60K6/442 ,  B60K6/48 ,  B60K2006/268 ,  B60K2006/4825 ,  B60W10/06 ,  B60W10/08 ,  B60W20/40 ,  B60W2540/10 ,  B60Y2200/92 ,  B60Y2300/182 ,  B60Y2300/192 ,  B60Y2300/43 ,  B60Y2300/60 ,  B60Y2300/63 ,  B60Y2400/60 ,  F02N11/00 ,  Y02T10/6221 ,  Y02T10/6252 ,  Y02T10/6286 ,  Y10S903/906 ,  Y10S903/93

Abstract: A vehicle propulsion system includes an engine and a first electric machine each configured to selectively provide torque to propel the vehicle. The propulsion system also includes a second electric machine coupled to the engine and configured to start the engine from an inactive state. A high-voltage battery powers both of the first electric machine and the second electric machine over a high-voltage bus. The vehicle further includes a controller programmed to issue a command to start the engine using the second electric machine in response to a threshold acceleration demand following a period of reduced acceleration demand.

公开(公告)号：US20170334297A1

公开(公告)日：2017-11-23

申请号：US15158887

申请日：2016-05-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Hao ,  Chandra S. Namuduri ,  Murali Pandi ,  Thomas W. Nehl

IPC: B60L11/18 ,  H02K1/14 ,  F02N11/08 ,  H02K1/27

CPC classification number: F02N11/0851 ,  B60L2220/50 ,  H02K1/276 ,  H02K7/006 ,  H02K21/16

Abstract: An interior permanent magnet electric machine includes a stator having a plurality of teeth disposed around a circumference oriented radially towards a center defining slots interposed between each of the teeth, and a conductive winding wrapped around each of the teeth of the stator to receive an electrical current. The electric machine also includes a rotor which is rotatable relative to the stator. The rotor defines a plurality of openings to receive permanent magnets near an outer portion of the rotor and a number of spokes interposed between mass reduction cutouts located closer to the center relative to the permanent magnets. Each of the permanent magnets defines a magnetic pole and each of the spokes is circumferentially aligned with one of the magnetic poles.

公开(公告)号：US09735634B2

公开(公告)日：2017-08-15

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.

公开(公告)号：US20170063187A1

公开(公告)日：2017-03-02

申请号：US15194597

申请日：2016-06-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Hao ,  Chandra S. Namuduri ,  Thomas W. Nehl

IPC: H02K1/27 ,  H02K21/14 ,  H02K3/28 ,  H02P6/08 ,  H02P9/48

CPC classification number: H02K1/2766 ,  H02K3/28 ,  H02K21/14 ,  H02P9/48

Abstract: An electric machine is provided that has a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles. The rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles. The multiple barrier layers are positioned adjacent one another between an inner periphery of the rotor core and an outer periphery of the rotor core and include a first barrier layer nearest the inner periphery. Permanent magnets are disposed in at least the first barrier layer. A stator assembly surrounds the rotor assembly. The electric machine is configured to function as a motor in a motoring mode and as a generator in a generating mode. The electric machine is configured with predetermined operating parameters selected for optimizing operation in the motoring mode and/or the generating mode.

Abstract translation: 提供一种电机，其具有转子组件，该转子组件具有转子芯，该转子芯构造成支撑围绕转子芯分开的永磁体以限定多个转子极。 转子芯具有在转子极的每一个处设置为多个阻挡层的多个转子槽。 多个阻挡层彼此相邻地定位在转子芯的内周和转子芯的外周之间，并且包括最靠近内周的第一阻挡层。 永磁体至少设置在第一阻挡层中。 定子组件围绕转子组件。 该电动机被配置为在电动模式下作为电动机起作用，并且在发电模式中用作发电机。 电机配置有选择用于优化驾驶模式和/或发电模式中的操作的预定操作参数。

公开(公告)号：US09479017B2

公开(公告)日：2016-10-25

申请号：US14337820

申请日：2014-07-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Hao ,  Thomas W. Nehl

IPC: H02K1/02 ,  H02K1/27

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。