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1. 发明申请

US20100244610A1 Optimized Electric Machine for Smart Actuators 有权
标题翻译：智能执行器优化电机
公开(公告)号：US20100244610A1
公开(公告)日：2010-09-30
申请号：US12409672
申请日：2009-03-24
申请人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
发明人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
IPC分类号： H02K1/00 , H02K3/00
CPC分类号： H02K21/12 , H02K1/27 , H02K1/278 , H02K1/30 , H02K7/08 , H02K7/083 , H02K7/088 , H02K21/16 , H02K29/03
摘要： A single stator electric machine includes a plurality of magnets for generating a first magnetic field. Each respective magnet represents a respective rotor pole. A magnet holder retains the plurality of magnets. A stator is disposed radially outward from the plurality of magnets for generating a second magnetic field. The stator includes a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. Each respective concentrated winding within the stator comprises non-overlapping phases which increase an active length of the windings of the stator and reduce an overhang of each respective winding with respect to each stator pole for improving torque efficiency. A number of rotor poles is at least eight and the number of rotor poles and a number of stator slots have a least common multiple of at least 36.
摘要翻译：单个定子电机包括用于产生第一磁场的多个磁体。各个磁体表示相应的转子极。磁体保持器保持多个磁体。定子从多个磁体径向向外设置，用于产生第二磁场。定子包括由槽分开的多个定子极，每个定子极具有集中的绕组，每个相应的定子极周围形成相应的匝数。定子内的每个各自的集中绕组包括非重叠相，其增加定子的绕组的有效长度并且相对于每个定子极减小每个相应绕组的悬伸以提高转矩效率。多个转子极点至少为8个，转子极数和多个定子槽具有至少36的最小公倍数。

2. 发明授权

US08816556B2 Optimized electric machine for smart actuators 有权
标题翻译：智能执行器优化电机
公开(公告)号：US08816556B2
公开(公告)日：2014-08-26
申请号：US12409672
申请日：2009-03-24
申请人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
发明人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
IPC分类号： H02K1/00 , H02K3/00 , H02K1/30 , H02K29/03 , H02K21/16 , H02K21/12 , H02K1/27 , H02K7/08
CPC分类号： H02K21/12 , H02K1/27 , H02K1/278 , H02K1/30 , H02K7/08 , H02K7/083 , H02K7/088 , H02K21/16 , H02K29/03
摘要： A single stator electric machine includes a plurality of magnets for generating a first magnetic field. Each respective magnet represents a respective rotor pole. A magnet holder retains the plurality of magnets. A stator is disposed radially outward from the plurality of magnets for generating a second magnetic field. The stator includes a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. Each respective concentrated winding within the stator comprises non-overlapping phases which increase an active length of the windings of the stator and reduce an overhang of each respective winding with respect to each stator pole for improving torque efficiency. A number of rotor poles is at least eight and the number of rotor poles and a number of stator slots have a least common multiple of at least 36.
摘要翻译：单个定子电机包括用于产生第一磁场的多个磁体。各个磁体表示相应的转子极。磁体保持器保持多个磁体。定子从多个磁体径向向外设置，用于产生第二磁场。定子包括由槽分开的多个定子极，每个定子极具有集中的绕组，每个相应的定子极周围形成相应的匝数。定子内的每个各自的集中绕组包括非重叠相，其增加定子的绕组的有效长度并且相对于每个定子极减小每个相应绕组的悬伸以提高转矩效率。多个转子极点至少为8个，转子极数和多个定子槽具有至少36的最小公倍数。

3. 发明申请

US20100244613A1 OPTIMIZED ELECTRIC MACHINE FOR SMART ACTUATORS 有权
标题翻译：用于智能执行器的优化电机
公开(公告)号：US20100244613A1
公开(公告)日：2010-09-30
申请号：US12409663
申请日：2009-03-24
申请人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
发明人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
IPC分类号： H02K16/04
CPC分类号： H02K21/12 , H02K3/28 , H02K16/04
摘要： An electric machine includes a plurality of magnets for generating a first magnetic field. A magnet holder retains the plurality of magnets. A first stator is disposed radially outward from the magnet holder for generating a second magnetic field. The first stator includes a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. A second stator is disposed radially inward from the magnet for generating a third magnetic field. The second stator has a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. The magnet holder and magnets retained therein are rotatable between the first stator and second stator.
摘要翻译：电机包括用于产生第一磁场的多个磁体。磁体保持器保持多个磁体。第一定子从磁体保持器径向向外设置以产生第二磁场。第一定子包括多个由槽隔开的定子极，每个定子极具有集中的绕组，每个定子极都形成有相应的匝数。第二定子从磁体径向向内设置以产生第三磁场。第二定子具有由槽间隔开的多个定子极，每个定子极具有集中的绕组，每个相应的定子极周围形成相应的匝数。保持在其中的磁体保持器和磁体可在第一定子和第二定子之间旋转。

4. 发明授权

US07791245B1 Optimized electric machine for smart actuators 有权
标题翻译：智能执行机构优化电机
公开(公告)号：US07791245B1
公开(公告)日：2010-09-07
申请号：US12409663
申请日：2009-03-24
申请人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
发明人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
IPC分类号： H02K1/22
CPC分类号： H02K21/12 , H02K3/28 , H02K16/04
摘要： An electric machine includes a plurality of magnets for generating a first magnetic field. A magnet holder retains the plurality of magnets. A first stator is disposed radially outward from the magnet holder for generating a second magnetic field. The first stator includes a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. A second stator is disposed radially inward from the magnet for generating a third magnetic field. The second stator has a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. The magnet holder and magnets retained therein are rotatable between the first stator and second stator.
摘要翻译：电机包括用于产生第一磁场的多个磁体。磁体保持器保持多个磁体。第一定子从磁体保持器径向向外设置以产生第二磁场。第一定子包括多个由槽隔开的定子极，每个定子极具有集中的绕组，每个定子极都形成有相应的匝数。第二定子从磁体径向向内设置以产生第三磁场。第二定子具有由槽间隔开的多个定子极，每个定子极具有集中的绕组，每个相应的定子极周围形成相应的匝数。保持在其中的磁体保持器和磁体可在第一定子和第二定子之间旋转。

5. 发明授权

US08497664B2 High efficiency multi-phase generator 有权
标题翻译：高效率多相发电机
公开(公告)号：US08497664B2
公开(公告)日：2013-07-30
申请号：US12622198
申请日：2009-11-19
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02P11/00 , H02P9/00
CPC分类号： H02M7/219
摘要： A generator system that includes a six-phase AC machine and an active rectifier bridge employing low on-resistance switches, such as MOSFET switches, for converting the AC current from the machine to a DC current. The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the six-phase current flow. The system determines the phase-to-ground voltages of the machine for inputs to the switch control circuit. The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages. The control circuit uses a specific control scheme to determine if each of the phase-to-phase voltages is above or below first and second predetermined threshold voltages, where if the phase-to-phase voltage is above the first threshold voltage, the control circuit closes the switch, and if the phase-to-phase voltage is below the second threshold voltage, the control circuit opens the switch.
摘要翻译：一种发电机系统，其包括六相交流电机和采用低导通电阻开关（例如MOSFET开关）的有源整流桥，用于将来自机器的交流电流转换为直流电流。该系统还包括开关控制电路，以与六相电流流同步地切换MOSFET开关。该系统确定机器的开关控制电路输入的相对地电压。控制电路根据相对地电压来计算相间电压。控制电路使用特定的控制方案来确定每个相间电压是否高于或低于第一和第二预定阈值电压，其中如果相间电压高于第一阈值电压，则控制电路关闭开关，并且如果相间电压低于第二阈值电压，则控制电路打开开关。

6. 发明申请

US20120194040A1 High Torque Density and Low Torque Ripple Actuator System 审中-公开
标题翻译：高扭矩密度和低扭矩波纹致动器系统
公开(公告)号：US20120194040A1
公开(公告)日：2012-08-02
申请号：US13017331
申请日：2011-01-31
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02K11/04
CPC分类号： H02K3/28 , H02K21/16
摘要： A permanent magnet electric machine drive system that includes a plurality of magnets for generating a first magnetic field and a stator is disposed radially outward from the plurality of magnets for generating a magnetic field. The stator includes a plurality of stator poles separated by slots with each respective stator pole having a concentrated winding with a respective number of turns formed around each respective stator pole. Each respective concentrated winding within the stator comprising non-overlapping phases. The concentrated windings form a dual three-phase winding configuration that includes a first set of three-balanced phase windings and a second set of three-balanced phase windings. The first set of three-balanced phase windings is phase shifted in the range of 15 to 45 electrical degrees from the second set of three-balanced phase windings for reducing the torque ripple.
摘要翻译：包括用于产生第一磁场的多个磁体和定子的永磁电机驱动系统从多个磁体径向向外设置，用于产生磁场。定子包括由槽分开的多个定子极，每个相应的定子极具有集中的绕组，其中每个相应的定子极周围形成相应的匝数。定子内的每个相应的集中绕组包括非重叠相。集中绕组形成双重三相绕组配置，其包括第一组三平衡相绕组和第二组三平衡相绕组。第三组三相绕组与第三组三相绕组的相位偏移在15至45度的范围内，以减小转矩波动。

7. 发明申请

US20120181854A1 METHOD AND APPARATUS FOR ELECTRIC POWER MANAGEMENT IN A VEHICLE 有权
标题翻译：车辆电力管理的方法与装置
公开(公告)号：US20120181854A1
公开(公告)日：2012-07-19
申请号：US13006542
申请日：2011-01-14
申请人： Suresh Gopalakrishnan , Chandra S. Namuduri , Mark C. Hoinka , Sanjeev M. Naik , Lei Hao
发明人： Suresh Gopalakrishnan , Chandra S. Namuduri , Mark C. Hoinka , Sanjeev M. Naik , Lei Hao
IPC分类号： B60L1/00
CPC分类号： B60L11/1861 , B60L11/1868 , B60L2210/10 , B60L2240/12 , B60L2240/545 , Y02T10/7016 , Y02T10/7044 , Y02T10/7066 , Y02T10/7216
摘要： An on-vehicle DC/DC converter transforms high-voltage electric power originating from an on-vehicle high-voltage source to low-voltage electric power at a regulated voltage level. The low-voltage electric power is distributed by a low-voltage bus. A method for operating the DC/DC converter includes monitoring a state of charge and a temperature of a low-voltage battery connected to the low-voltage bus, setting a DC/DC converter command to a nominal voltage level as a function of the state of charge and temperature of the low-voltage battery, monitoring a total low-voltage electric load, and adjusting the DC/DC converter command to a minimum low-voltage reference voltage when the vehicle is operating below a predetermined speed and the total low-voltage electric load is greater than a predetermined load.
摘要翻译：车载DC / DC转换器将来自车载高压源的高压电力以稳定的电压水平转换为低压电力。低压电力由低压母线分配。用于操作DC / DC转换器的方法包括监视与低压总线连接的低电压电池的充电状态和温度，将DC / DC转换器命令设置为作为状态的函数的标称电压电平的低压电池的充电和温度，监测总的低压电负载，并且当车辆运行低于预定速度时，将DC / DC转换器命令调整到最小的低电压参考电压，电压电负载大于预定负载。

8. 发明申请

US20110116291A1 HIGH EFFICIENCY MULTI-PHASE GENERATOR 有权
标题翻译：高效率多相发电机
公开(公告)号：US20110116291A1
公开(公告)日：2011-05-19
申请号：US12622198
申请日：2009-11-19
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02M7/155
CPC分类号： H02M7/219
摘要： A generator system that includes a six-phase AC machine and an active rectifier bridge employing low on-resistance switches, such as MOSFET switches, for converting the AC current from the machine to a DC current. The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the six-phase current flow. The system determines the phase-to-ground voltages of the machine for inputs to the switch control circuit. The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages. The control circuit uses a specific control scheme to determine if each of the phase-to-phase voltages is above or below first and second predetermined threshold voltages, where if the phase-to-phase voltage is above the first threshold voltage, the control circuit closes the switch, and if the phase-to-phase voltage is below the second threshold voltage, the control circuit opens the switch.
摘要翻译：一种发电机系统，其包括六相交流电机和采用低导通电阻开关（例如MOSFET开关）的有源整流桥，用于将来自机器的交流电流转换为直流电流。该系统还包括开关控制电路，以与六相电流流同步地切换MOSFET开关。该系统确定机器的开关控制电路输入的相对地电压。控制电路根据相对地电压来计算相间电压。控制电路使用特定的控制方案来确定每个相间电压是否高于或低于第一和第二预定阈值电压，其中如果相间电压高于第一阈值电压，则控制电路关闭开关，并且如果相间电压低于第二阈值电压，则控制电路打开开关。

9. 发明申请

US20100259208A1 ELECTRIC MACHINE AND CONTROL METHOD 有权
标题翻译：电机及控制方法
公开(公告)号：US20100259208A1
公开(公告)日：2010-10-14
申请号：US12421001
申请日：2009-04-09
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02P6/08 , H02K21/02
CPC分类号： H02K21/028
摘要： A method for controlling an electric machine includes measuring a motor control parameter or parameters and selectively positioning an adjustable member within the electric machine in response the motor control parameters. Selective positioning of the adjustable member varies the geometry of a flux path within the electric machine, thereby inducing a predetermined voltage output in the electric machine. An electric machine includes a rotor, a shaft operatively connected to the rotor to rotate in conjunction therewith, and a stator. An adjustable member is positioned between the rotor and the stator, and has a variable offset position that can be selected by an electronic control unit (ECU) and applied by an actuator to thereby vary the geometry of a flux path within the electric machine. The adjustable member can include a non-magnetic annular hub and magnetic radial arms and axial extensions.
摘要翻译：一种用于控制电机的方法包括测量电机控制参数或参数，并响应于电动机控制参数选择性地将可调节构件定位在电机内。可调节构件的选择性定位改变电机内的通量路径的几何形状，从而在电机中引起预定的电压输出。电机包括转子，可操作地连接到转子以与其一起旋转的轴和定子。可调节构件定位在转子和定子之间，并且具有可由电子控制单元（ECU）选择并由致动器施加的可变偏移位置，从而改变电机内的磁通路径的几何形状。可调节构件可以包括非磁性环形轮毂和磁性径向臂和轴向延伸部。

10. 发明申请

US20080284385A1 HIGH EFFICIENCY GENERATOR 有权
标题翻译：高效发电机
公开(公告)号：US20080284385A1
公开(公告)日：2008-11-20
申请号：US12114008
申请日：2008-05-02
申请人： Chandra S. Namuduri , Lei Hao
发明人： Chandra S. Namuduri , Lei Hao
IPC分类号： H02P9/00 , H02M7/06 , H02M7/217
CPC分类号： H02M7/219 , H02P9/30
摘要： A generator system that includes a three-phase AC machine and an active rectifier bridge employing low on-resistance MOSFET switches for converting the AC current from the machine to a DC current. The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the three-phase current flow. The system determines the phase-to-ground voltages of the machine as inputs to the switch control circuit. The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages. The control circuit then determines if each of the phase-to-phase voltages is above or below first and second predetermined threshold voltages, where if the phase-to-phase voltage is above the first threshold voltage, the control circuit closes the switch, and if the phase-to-phase voltage is below the second threshold voltage, the control circuit opens the switch.
摘要翻译：一种发电机系统，包括三相交流电机和采用低导通电阻MOSFET开关的有源整流桥，用于将来自机器的交流电流转换为直流电流。该系统还包括开关控制电路，以与三相电流流同步地切换MOSFET开关。该系统确定机器的相对地电压作为开关控制电路的输入。控制电路根据相对地电压来计算相间电压。然后，控制电路确定每个相间电压是否高于或低于第一和第二预定阈值电压，其中如果相间电压高于第一阈值电压，则控制电路关闭开关，并且如果相间电压低于第二阈值电压，则控制电路打开开关。

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