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1. 发明申请

US20090295316A1 GEARLESS WHEEL MOTOR DRIVE SYSTEM 审中-公开
标题翻译：无齿轮电机驱动系统
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。

2. 发明申请

US20090189561A1 ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION 有权
标题翻译：电动机定子绕组温度估计
公开(公告)号：US20090189561A1
公开(公告)日：2009-07-30
申请号：US12019395
申请日：2008-01-24
申请人： NITINKUMAR R. PATEL , YO CHAN SON , SILVA HITI , STEVEN E. SCHULZ
发明人： NITINKUMAR R. PATEL , YO CHAN SON , SILVA HITI , STEVEN E. SCHULZ
IPC分类号： H02P23/14 , H02K9/00 , H02K11/00
CPC分类号： H02H7/0852
摘要： A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The temperature estimation controller includes a low speed temperature estimation module, a transition module and a temperature dependent torque command derater block. The low speed temperature estimation module determines a stator temperature of each of a plurality of phases of the permanent magnet motor in response to first thermal impedances measured for each of the plurality of phases with respect to a thermal neutral. The transition module is coupled to the low speed temperature estimation module and outputs the stator temperature of each of a plurality of phases of the permanent magnet motor as determined by the low speed temperature estimation module when a detected speed of the permanent magnet motor is less than a first predetermined speed. The temperature dependent torque command derater block is coupled to the transition module and derates the torque command in response to the stator temperature of one or more of the plurality of phases.
摘要翻译：提供了一种用于控制转矩指令以防止永磁电动机的多相中的一个或多个相的过热的温度估计控制器和方法。温度估计控制器包括低速温度估计模块，过渡模块和与温度相关的转矩指令减排模块。低速温度估计模块响应于相对于热中性点对多个相中的每一个测量的第一热阻而确定永磁电动机的多相的每个相的定子温度。当所述永磁电动机的检测速度小于所述低速温度估计模块时，所述过渡模块耦合到所述低速温度估计模块，并且输出由所述低速温度估计模块确定的所述永磁电动机的多个相中的每一个的定子温度。第一预定速度。与温度相关的转矩指令转换器模块耦合到转换模块，并响应于多个相位中的一个或多个的定子温度降低转矩指令。

3. 发明申请

US20110089876A1 FAIL-SAFE CONTROLS FOR ELECTRIC TRACTION DRIVE SYSTEMS 有权
标题翻译：电动牵引驱动系统的失效安全控制
公开(公告)号：US20110089876A1
公开(公告)日：2011-04-21
申请号：US12582562
申请日：2009-10-20
申请人： NITINKUMAR R. PATEL , TIM M. GREWE , YO CHAN SON
发明人： NITINKUMAR R. PATEL , TIM M. GREWE , YO CHAN SON
IPC分类号： H02P6/18
CPC分类号： H02P21/04 , B60L3/0038 , B60L3/06 , H02P21/24 , H02P29/032 , Y02T10/643
摘要： A method is provided for operation of an internal permanent magnet motor having a rotor. The method includes determining whether a neutral point access signal is received from the rotor and operating the internal permanent magnet motor using sensorless signals corresponding to a rotor position and a rotor speed of the rotor derived by a first sensorless signal estimation method when the neutral point access signal is received from the rotor, wherein the first sensorless signal estimation method utilizes the neutral point access signal to generate the rotor position and the rotor speed. The method further includes operating the internal permanent magnet motor using sensorless signals corresponding to a rotor position and a rotor speed of the rotor derived by a second sensorless signal estimation method when the neutral point access signal is not received from the rotor, wherein the second sensorless signal estimation method does not utilize the neutral point access signal to generate the rotor position and the rotor speed.
摘要翻译：提供一种用于具有转子的内部永磁电动机的操作的方法。该方法包括：当中性点访问时，确定是否从转子接收到中性点访问信号，并使用与转子位置相对应的无传感器信号和由第一无传感器信号估计方法获得的转子的转子速度来操作内部永磁电动机信号从转子接收，其中第一无传感器信号估计方法利用中性点存取信号产生转子位置和转子速度。该方法还包括当没有从转子接收到中性点存取信号时，使用与转子位置相对应的无转速信号和由第二无传感器信号估计方法导出的转子的转子速度来操作内部永磁电动机，其中第二无传感器信号估计方法不利用中性点存取信号产生转子位置和转子转速。

4. 发明申请

US20110089875A1 LIMP HOME OPERATIONAL MODE FOR AN ELECTRIC VEHICLE 有权
标题翻译：电动车辆的主要操作模式
公开(公告)号：US20110089875A1
公开(公告)日：2011-04-21
申请号：US12582534
申请日：2009-10-20
申请人： NITINKUMAR R. PATEL , PETER J. SAVAGIAN , YO CHAN SON , ROSTAM DEHMOOBED NASRABADI
发明人： NITINKUMAR R. PATEL , PETER J. SAVAGIAN , YO CHAN SON , ROSTAM DEHMOOBED NASRABADI
IPC分类号： H02P6/16
CPC分类号： H02P21/04 , B60L3/0038 , H02P21/24 , H02P29/032 , Y02T10/643
摘要： Methods and apparatus are provided for a limp home operational mode for an electric motor system. The method includes determining whether a resolver has failed. When the resolver has not failed, operation of the electric motor system uses resolver signals. When the resolver fails, operation of the electric motor system uses sensorless rotor position and rotor speed signals.
摘要翻译：提供了用于电动机系统的跛行家庭操作模式的方法和装置。该方法包括确定解析器是否失败。当解算器没有出现故障时，电机系统的运行使用分解器信号。当解算器出现故障时，电动机系统的运行使用无传感器转子位置和转子速度信号。

5. 发明申请

US20110062909A1 POSITION SENSORLESS CONTROL OF PERMANENT MAGNET MOTORS 有权
标题翻译：永磁电机的位置传感器控制
公开(公告)号：US20110062909A1
公开(公告)日：2011-03-17
申请号：US12558257
申请日：2009-09-11
申请人： NITINKUMAR R. PATEL , YO CHAN SON
发明人： NITINKUMAR R. PATEL , YO CHAN SON
IPC分类号： H02P6/18
CPC分类号： H02P6/18 , B60K1/00 , B60K6/20 , B60L11/123 , B60L11/1807 , B60L2220/16 , B60Y2200/92 , H02P6/181 , Y02T10/6217 , Y02T10/646 , Y02T10/7005 , Y02T10/7077 , Y02T10/7258
摘要： Methods and apparatus are provided for sensorless control of a permanent magnet motor. The method includes the step of determining a sensorless position signal and a sensorless speed signal in a torque-speed plane in response to phase currents corresponding to currents on one or more of the plurality of phases.
摘要翻译：提供了用于永磁电动机的无传感器控制的方法和装置。该方法包括响应于对应于多相中的一个或多个相上的电流的相电流，确定转矩 - 速度平面中的无传感器位置信号和无传感器速度信号的步骤。

6. 发明申请

US20110062902A1 METHOD AND APPARATUS FOR LOW SPEED PERMANENT MAGNET MOTOR OPERATION 有权
标题翻译：低速永磁电机运行方法与装置
公开(公告)号：US20110062902A1
公开(公告)日：2011-03-17
申请号：US12558291
申请日：2009-09-11
申请人： NITINKUMAR R. PATEL , YO CHAN SON
发明人： NITINKUMAR R. PATEL , YO CHAN SON
IPC分类号： H02P21/04 , H02P6/18 , H02P23/04
CPC分类号： H02P6/185 , H02P21/04 , H02P21/24
摘要： Methods and apparatus are provided for startup of a permanent magnet alternating current (AC) motor. The method comprises the steps of detecting startup of the permanent magnet AC motor; detecting a mechanical oscillation of the permanent magnet AC motor when startup of the permanent magnet AC motor is detected; and, in response to detection of the mechanical oscillation of the permanent magnet AC motor when startup is detected, suppressing the mechanical oscillation of the permanent magnet AC motor.
摘要翻译：提供用于启动永磁交流（AC）电动机的方法和装置。该方法包括以下步骤：检测永磁体AC电动机的启动; 在检测到永久磁铁AC电动机的启动时检测永久磁铁AC电动机的机械振动; 并且响应于检测到启动时永久磁铁AC电动机的机械振动的检测，抑制了永久磁铁AC电动机的机械振动。

7. 发明申请

US20090140676A1 METHOD AND SYSTEM FOR SENSORLESS CONTROL OF AN ELECTRIC MOTOR 有权
标题翻译：电动机无传感控制方法与系统
公开(公告)号：US20090140676A1
公开(公告)日：2009-06-04
申请号：US11947501
申请日：2007-11-29
申请人： YO CHAN SON , NITINKUMAR R. PATEL , STEVEN E. SCHULZ
发明人： YO CHAN SON , NITINKUMAR R. PATEL , STEVEN E. SCHULZ
IPC分类号： H02P6/18 , B60L3/00 , G06F19/00 , H02P21/08
CPC分类号： H02P21/13 , H02P21/141 , H02P21/24
摘要： Methods and systems for controlling an electric motor are provided. A signal comprising at least first and second cycles is provided to the electric motor. A first flux value for the electric motor associated with the first cycle of the signal is calculated. A second flux value for the electric motor associated with the second cycle of the signal is calculated based on the first flux value.
摘要翻译：提供了用于控制电动机的方法和系统。包括至少第一和第二循环的信号被提供给电动机。计算与信号的第一周期相关的电动机的第一通量值。基于第一通量值计算与信号的第二周期相关联的电动机的第二通量值。

8. 发明申请

US20110213518A1 SYSTEMS AND METHODS FOR MANAGING TORQUE CAPABILITY IN ELECTRIC MOTOR SYSTEMS 有权
标题翻译：用于管理电动机系统的转矩能力的系统和方法
公开(公告)号：US20110213518A1
公开(公告)日：2011-09-01
申请号：US12715081
申请日：2010-03-01
申请人： BRIAN A. WELCHKO , NITINKUMAR R. PATEL , LEAH DUNBAR , WILLIAM R. CAWTHORNE , STEVEN E. SCHULZ
发明人： BRIAN A. WELCHKO , NITINKUMAR R. PATEL , LEAH DUNBAR , WILLIAM R. CAWTHORNE , STEVEN E. SCHULZ
IPC分类号： B60L11/00 , H02P7/285
CPC分类号： B60L15/20 , H02P29/032 , H02P29/60 , Y02T10/645 , Y02T10/7275 , Y10T477/23
摘要： A method for operating an electric motor is provided. The method includes receiving a torque request; determining long term torque capabilities and short term torque capabilities of the electric motor; generating a torque command based on the torque request and at least one of the long term torque capabilities or the short term torque capabilities; and controlling the electric motor in accordance with the torque command.
摘要翻译：提供了一种用于操作电动机的方法。该方法包括接收扭矩请求; 确定电动机的长期扭矩能力和短期扭矩能力; 基于所述转矩请求和所述长期扭矩能力或短期扭矩能力中的至少一个产生转矩指令; 并根据转矩指令控制电动机。

9. 发明申请

US20110050141A1 ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION 有权
标题翻译：电动机定子绕组温度估计
公开(公告)号：US20110050141A1
公开(公告)日：2011-03-03
申请号：US12568002
申请日：2009-09-28
申请人： CHIA-CHOU YEH , NITINKUMAR R. PATEL , YO CHAN SON , STEVEN E. SCHULZ
发明人： CHIA-CHOU YEH , NITINKUMAR R. PATEL , YO CHAN SON , STEVEN E. SCHULZ
IPC分类号： H02P7/00
CPC分类号： H02P6/08 , G01R31/343 , H02P29/664
摘要： A temperature estimation controller and methods are provided for estimating stator winding temperature over a full range of motor operating speeds. In one implementation, the angular velocity of a motor is determined along with a total power loss for each phase of said motor. The total power loss in each phase comprises stator winding power loss and a core power loss. Stator winding temperatures for each phase of motor can then estimated based on the total power loss in that phase, and a combined thermal impedance for that phase. The combined thermal impedance comprises a first thermal impedance between the stator winding and the stator core, and a second thermal impedance between the stator core and the motor coolant.
摘要翻译：提供了一种温度估计控制器和方法，用于在整个电机运行速度范围内估计定子绕组温度。在一个实施方式中，确定电动机的角速度以及所述电动机的每相的总功率损耗。每相中的总功率损耗包括定子绕组功率损耗和铁芯功率损耗。然后可以根据该阶段的总功率损耗和该阶段的组合热阻抗来估计电机各相的定子绕组温度。组合的热阻抗包括定子绕组和定子铁心之间的第一热阻抗，以及定子铁芯和电动机冷却剂之间的第二热阻抗。

10. 发明申请

US20110012544A1 METHODS, SYSTEMS AND APPARATUS FOR SENSORLESS ROTOR ANGULAR POSITION ESTIMATION IMPLEMENTING REDUCED SWITCHING LOSS PULSE WIDTH MODULATED (PWM) WAVEFORMS 有权
标题翻译：无传感转子角度位置估计的方法，系统和装置实现减少开关损耗脉冲宽度调制（PWM）波形
公开(公告)号：US20110012544A1
公开(公告)日：2011-01-20
申请号：US12503591
申请日：2009-07-15
申请人： STEVEN E. SCHULZ , YO CHAN SON , NITINKUMAR R. PATEL
发明人： STEVEN E. SCHULZ , YO CHAN SON , NITINKUMAR R. PATEL
IPC分类号： H02P21/04 , H02P6/18
CPC分类号： H02P6/182 , B60L15/025 , B60L15/08 , B60L2200/26 , B60L2260/44 , H02P21/04 , H02P21/18 , H02P21/24 , H02P27/08 , Y02T10/643
摘要： Methods, system and apparatus are provided for low speed sensorless rotor angular position estimation that implements reduced switching loss PWM waveforms.
摘要翻译：提供了用于实现降低的开关损耗PWM波形的低速无传感器转子角位置估计的方法，系统和装置。

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