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1. 发明授权

US06369319B1 Electrically isolated coolant manifold with recessed apertures for EMI reduction 有权
标题翻译：电气隔离冷却液歧管，带有凹槽，用于降低EMI
公开(公告)号：US06369319B1
公开(公告)日：2002-04-09
申请号：US09552019
申请日：2000-04-19
申请人： James Nagashima , Terence G. Ward , Scott D. Downer
发明人： James Nagashima , Terence G. Ward , Scott D. Downer
IPC分类号： H02G300
CPC分类号： B60L11/00
摘要： A power electronics chassis (10) for electric vehicles and other applications that use liquid coolant to cool power electronic devices (20) contained within the chassis. The chassis (10) includes an electrically conductive housing (12) and an electrically non-conductive manifold (16) that permits coolant flow into and out of the housing. The housing (12) has at least one wall (34) that includes an outer surface (42) and a pair of recessed apertures (36,72), each of which provide access to an interior region (38) of the housing (12) via a passageway (40,74). The manifold (16) has an inlet (26) and an outlet (28), each of which has a connecting tube (54,80) that extends through one of the passageways (40,74). Each passageway (40,74) is defined by an axial wall (44,78) of the housing (12) that extends towards the interior region (38) from the outer surface (42) to its respective aperture. The apertures (36,72) are each formed by an annular wall (50,76) that extends radially inward from its associated axial wall (44,78) at the interior end of its passageway. The outer diameter of the connecting tubes (54,80) are equal to the diameter of their respective apertures (36,72). Thus, each tube (54,80) is in contact with its aperture (36,72) and is separated from its adjacent axial wall (44,78) by an annular gap (70). This configuration provides electrical isolation of the coolant from the chassis (10) in a manner that significantly reduces the radiated emissions at the apertures (36,72).
摘要翻译：一种用于电动车辆和其他应用的电力电子底盘（10），其使用液体冷却剂来冷却包含在所述底盘内的电力电子设备（20）。底盘（10）包括导电壳体（12）和允许冷却剂流入和流出壳体的非导电歧管（16）。壳体（12）具有至少一个壁（34），其包括外表面（42）和一对凹入的孔（36,72），每个凹槽提供与壳体（12）的内部区域（38）的通路）通过通道（40,74）。歧管（16）具有入口（26）和出口（28），每个出口（28）具有延伸通过其中一个通道（40,74）的连接管（54,80）。每个通道（40,74）由壳体（12）的轴向壁（44,78）限定，其从外表面（42）朝向内部区域（38）延伸到其相应的孔。孔（36,72）各自由在其通道的内端处从其相关联的轴向壁（44,78）径向向内延伸的环形壁（50,76）形成。连接管（54,80）的外径等于它们各自孔（36,72）的直径。因此，每个管（54,80）与其孔（36,72）接触并且通过环形间隙（70）与其相邻的轴向壁（44,78）分离。这种配置提供了冷却剂与底盘（10）的电隔离，其方式是显着地减少了孔（36,72）处的辐射发射。

2. 发明授权

US06219245B1 Electrically isolated power switching device mounting assembly for EMI reduction 失效
标题翻译：用于EMI降低的电隔离电源开关装置安装组件
公开(公告)号：US06219245B1
公开(公告)日：2001-04-17
申请号：US09551249
申请日：2000-04-18
申请人： James Nagashima , Terence G. Ward , Scott D. Downer
发明人： James Nagashima , Terence G. Ward , Scott D. Downer
IPC分类号： H05K720
CPC分类号： H01L23/473 , H01L2924/0002 , H01L2924/00
摘要： A power electronics chassis (10) and liquid-cooled heat sink mounting assembly for electric vehicles and other applications that use liquid coolant to cool power electronic devices (20) contained within an electrically conductive housing (12). The power electronics chassis (10) includes an inverter (18) containing power switching devices (20) that are heat sunk using the liquid-cooled mounting assembly. The mounting assembly includes a heat exchanger (22) and a plastic, electrically non-conductive coolant manifold (16) that has an inlet (26) and outlet (28) for passage of liquid coolant into and out of the electronics housing (12). The power switching devices (20) are attached to a mounting surface (40) of the heat exchanger (22) and are thermally coupled to the coolant within the heat exchanger (22) via the mounting surface (40). The inlet (26) and outlet (28) of the plastic coolant manifold (16) are connected to the heat exchanger (22) by conduits (30,32) to thereby permit circulation of liquid coolant into the chassis housing (12), through the heat exchanger (22), and back out of the chassis housing (12) while maintaining electrical isolation between the liquid coolant and chassis housing (12). This configuration significantly reduces the radiated EMI by significantly reducing the parasitic capacitance between the switching devices (20) and chassis housing (12).
摘要翻译：一种用于电动车辆和其他应用的电力电子底盘（10）和液体冷却散热器安装组件，其使用液体冷却剂来冷却包含在导电外壳（12）内的电力电子设备（20）。电力电子机箱（10）包括一个逆变器（18），该逆变器包含使用液冷式安装组件进行散热的功率开关装置（20）。安装组件包括热交换器（22）和塑料的非导电冷却剂歧管（16），其具有用于使液体冷却剂进入和离开电子设备壳体（12）的入口（26）和出口（28）。动力切换装置（20）附接到热交换器（22）的安装表面（40），并且经由安装表面（40）热耦合到热交换器（22）内的冷却剂。塑料冷却剂歧管（16）的入口（26）和出口（28）通过管道（30,32）连接到热交换器（22），从而允许液体冷却剂循环到底盘壳体（12）中，通过所述热交换器（22）并且在所述液体冷却剂和所述底盘壳体（12）之间保持电气隔离的同时从所述底盘壳体（12）返回。这种配置通过显着降低开关装置（20）和底盘壳体（12）之间的寄生电容来显着地降低辐射EMI。

3. 发明授权

US06381110B1 Method and apparatus for detecting isolation faults in motor/inverter systems 有权
标题翻译：用于检测电机/逆变器系统中的隔离故障的方法和装置
公开(公告)号：US06381110B1
公开(公告)日：2002-04-30
申请号：US09519414
申请日：2000-03-06
申请人： James Nagashima , James Souther , Scott D. Downer
发明人： James Nagashima , James Souther , Scott D. Downer
IPC分类号： H02H700
CPC分类号： B60W20/50 , B60L3/0023 , B60L3/0069 , B60W10/08 , B60W20/00 , G01R31/12 , G01R31/343 , G01R31/346 , G01R31/42 , H02H3/165 , H02H7/0833
摘要： A method for detecting an isolation fault in a system comprising a source connected an inverter through a circuit interrupter, the inverter connected to windings of an electric motor for driving the electric motor, is presented. The method comprising operating the inverter (1) to yield a zero net current in the windings of the electric motor other than leakage current resulting from an isolation fault or (2) to apply a voltage to at least one of the windings of the electric motor for a period of time given an ohmic level of an isolation fault to be detected; and measuring a voltage in the system, wherein a voltage level measured during this operation of the inverter is indicative of the existence of an isolation fault. Thereafter, the circuit interrupter is actuated in response to the voltage level indicative of the existence of the isolation fault.
摘要翻译：一种用于检测系统中的隔离故障的方法，包括通过电路断续器连接逆变器的源极，连接到用于驱动电动机的电动机的绕组的逆变器。所述方法包括操作所述逆变器（1）以产生除了由隔离故障引起的泄漏电流之外的所述电动机的绕组中的零净电流，或者（2）向所述电动机的至少一个绕组施加电压在一段时间内给出要检测的隔离故障的欧姆级; 并测量系统中的电压，其中在逆变器的该操作期间测量的电压电平指示存在隔离故障。此后，电路断续器响应于表示隔离故障的存在的电压电平被致动。

4. 发明授权

US06892796B1 Apparatus and method for mounting a power module 有权
标题翻译：用于安装电源模块的装置和方法
公开(公告)号：US06892796B1
公开(公告)日：2005-05-17
申请号：US09511292
申请日：2000-02-23
申请人： James Nagashima , Terence G. Ward
发明人： James Nagashima , Terence G. Ward
IPC分类号： H01L23/40 , H01L23/473 , H05K7/20
CPC分类号： H01L23/473 , H01L23/4093 , H01L2924/0002 , H01L2924/00
摘要： A power module with heat sources wherein the heat is dissipated by a heat sink. The heat sink includes a manifold with coolant flowing therein. An opening on the manifold enables the coolant to come in direct contact with a base plate of the power module. The power module being retained on the heat sink by a plurality of spring clips.
摘要翻译：具有热源的功率模块，其中热量由散热器消散。散热器包括其中具有冷却剂的歧管。歧管上的开口使得冷却剂能够与电源模块的底板直接接触。功率模块通过多个弹簧夹保持在散热器上。

5. 发明申请

US20050035678A1 Axial flux motor mass reduction with improved cooling 审中-公开
标题翻译：轴向通量电机质量减少，改善冷却
公开(公告)号：US20050035678A1
公开(公告)日：2005-02-17
申请号：US10903928
申请日：2004-07-29
申请人： Terence Ward , Khwaja Rahman , James Nagashima , Fabio Crescimbini , Federico Caricchi , Giorgio Lucchi
发明人： Terence Ward , Khwaja Rahman , James Nagashima , Fabio Crescimbini , Federico Caricchi , Giorgio Lucchi
IPC分类号： H02K1/02 , H02K1/18 , H02K1/27 , H02K1/32 , H02K3/46 , H02K3/50 , H02K7/14 , H02K9/22 , H02K21/24 , H02P21/06 , H02P21/14 , H02K21/12 , H02K1/22
CPC分类号： H02P21/06 , B60L3/0061 , B60L7/14 , B60L15/2009 , B60L50/51 , B60L58/12 , B60L2240/12 , B60L2240/36 , B60L2240/421 , B60L2240/423 , B60L2240/547 , B60L2240/549 , H02K1/02 , H02K1/182 , H02K1/2793 , H02K1/32 , H02K3/46 , H02K7/14 , H02K9/22 , H02K21/24 , H02P21/0089 , Y02T10/641 , Y02T10/643 , Y02T10/645 , Y02T10/7005 , Y02T10/7044 , Y02T10/705 , Y02T10/72 , Y02T10/7275
摘要： Methods and apparatus are provided for an axial electric motor. The apparatus comprises, a stator having coils thereon for producing a magnetic field, a rotor rotated by the magnetic field, and an output shaft coupled to the rotor. The rotor includes a magnetic and non-magnetic component. The non-magnetic component has a lower density than the magnetic component. One or both of the rotor components have apertures therein for ventilation and weight reduction. Permanent magnets are desirably mounted on the magnetic component of the rotor facing the stator and portions of the rotor behind the permanent magnets are hollowed out to be thinner than portions of the rotor between the permanent magnets. This reduces rotor weight without significantly affecting magnetic flux density in the rotor or motor torque.
摘要翻译：为轴向电动机提供了方法和装置。该装置包括：定子，其上具有用于产生磁场的线圈，由磁场旋转的转子以及耦合到转子的输出轴。转子包括磁性和非磁性部件。非磁性部件具有比磁性部件低的密度。一个或两个转子部件在其中具有用于通风和减轻重量的孔。永磁体期望地安装在面向定子的转子的磁性部件上，永磁体后面的转子的部分被挖空以比永磁体之间的转子部分更薄。这降低了转子重量，而不会显着影响转子或电机转矩的磁通密度。

6. 发明申请

US20080061525A1 VEHICULAR WHEEL ASSEMBLY 审中-公开
标题翻译：车道总成
公开(公告)号：US20080061525A1
公开(公告)日：2008-03-13
申请号：US11852273
申请日：2007-09-07
申请人： Terence Ward , James Nagashima , Michael Milani , Khwaja Rahman
发明人： Terence Ward , James Nagashima , Michael Milani , Khwaja Rahman
IPC分类号： B62D7/16
CPC分类号： B60K7/0007 , B60K2007/0038 , B60K2007/0092
摘要： A vehicular wheel assembly includes a first bearing component configured to be coupled to a frame of a vehicle, a second bearing component rotatably coupled to the first bearing component, and a brake mechanism coupled to the second bearing component. The motor includes a stator and a rotor. The stator is coupled to the first bearing component and the rotor is coupled to the second bearing component such that rotation of the rotor relative to the stator causes the second bearing component to rotate relative to the first bearing component. The brake mechanism is between the motor and the frame and is configured to slow the rotation of the second bearing component and the rotor.
摘要翻译：车轮组件包括构造成联接到车辆的框架的第一轴承部件，可旋转地联接到第一轴承部件的第二轴承部件和联接到第二轴承部件的制动机构。电动机包括定子和转子。定子联接到第一轴承部件并且转子联接到第二轴承部件，使得转子相对于定子的转动使得第二轴承部件相对于第一轴承部件旋转。制动机构位于马达和框架之间，并且构造成减慢第二轴承部件和转子的旋转。

7. 发明申请

US20060174642A1 Cooling arrangements for integrated electric motor-inverters 有权
标题翻译：集成电动机 - 逆变器的冷却装置
公开(公告)号：US20060174642A1
公开(公告)日：2006-08-10
申请号：US11054483
申请日：2005-02-09
申请人： James Nagashima , Karl Conroy , Eric Ostrom , Gregory Smith , George John , David Tang , Terence Ward
发明人： James Nagashima , Karl Conroy , Eric Ostrom , Gregory Smith , George John , David Tang , Terence Ward
IPC分类号： F25B1/00 , F25D15/00 , F25B49/00 , F25D23/12 , F28D5/00
CPC分类号： F28D15/00 , B60K6/26 , B60K2001/003 , F28D15/0266 , H02K9/19 , H02K11/33 , H05K7/20936
摘要： In order to provide a modular arrangement, an inverter for an electric traction motor used to drive an automotive vehicle is positioned in proximity with the traction motor. The inverter is located within a compartment adjacent to one end of the electric traction motor and is cooled in a closed system by spraying a liquid coolant directly onto the inverter. The liquid coolant absorbs heat from the inverter and is cooled by a heat exchange arrangement comprising a reservoir with pipes carrying a second coolant from the radiator of the automotive vehicle. In a preferred embodiment, the coolant is collected from the inverter in an annular reservoir that is integral with the compartment containing the inverter. In accordance with one embodiment of the cooling arrangement, heat from the inverter vaporizes the liquid coolant by absorbing heat from the inverter during a phase change from a liquid to a vapor. The vaporized coolant is condensed by a circulating second coolant in pipes connected to the vehicle's radiator through a condenser that is preferably coaxial with the motor and the annular reservoir, which annular reservoir in the second embodiment collects overspray liquid coolant. In order to avoid degrading the inverter, the coolant is a dielectric fluid.
摘要翻译：为了提供模块化布置，用于驱动机动车辆的电动牵引电动机的逆变器位于牵引电动机附近。逆变器位于与电力牵引电动机的一端相邻的隔室内，并通过将液体冷却剂直接喷射到逆变器上而在封闭系统中冷却。液体冷却剂从逆变器吸收热量，并且通过热交换装置来冷却，所述热交换装置包括具有从机动车辆的散热器承载第二冷却剂的管道的储存器。在优选实施例中，冷却剂从与逆变器的隔室成一整体的环形容器中从逆变器收集。根据冷却装置的一个实施例，来自逆变器的热量在从液体到蒸汽的相变期间通过吸收来自逆变器的热量来蒸发液体冷却剂。蒸发的冷却剂通过连接到车辆散热器的管道中的循环第二冷却剂冷凝，该冷凝器优选地与电动机和环形储存器同轴，该第二实施例中的环形储存器收集过喷液体冷却剂。为了避免降低变频器，冷却剂是介质流体。

8. 发明申请

US20050275302A1 Rotor magnet placement in interior permanent magnet machines 有权
标题翻译：转子磁铁放置在内置永磁机
公开(公告)号：US20050275302A1
公开(公告)日：2005-12-15
申请号：US10867402
申请日：2004-06-14
申请人： Khwaja Rahman , James Nagashima
发明人： Khwaja Rahman , James Nagashima
IPC分类号： H02K1/27 , H02K21/12
CPC分类号： H02K1/2766
摘要： A machine includes a stator and a rotor having a plurality of poles. Each pole is formed at least in part by a plurality of permanent magnets recessed within the rotor at a predetermined distance from an outer surface of the rotor. The distance is predetermined to minimize rotor flux variation near the outer surface during rotation of the rotor relative to the stator. Eddy current losses are thereby reduced.
摘要翻译：机器包括定子和具有多个极的转子。每个极至少部分地由在转子内凹入预定距离的转子的外表面处的多个永磁体形成。该距离是预定的，以使转子相对于定子旋转期间的外表面附近的转子磁通变化最小化。从而减小涡流损耗。

9. 发明申请

US20050035672A1 Cooling and handling of reaction torque for an axial flux motor 有权
标题翻译：冷却和处理轴向通量电机的反作用力矩
公开(公告)号：US20050035672A1
公开(公告)日：2005-02-17
申请号：US10909250
申请日：2004-07-29
申请人： Terence Ward , Khwaja Rahman , James Nagashima , Fabio Crescimbini , Federico Caricchi , Giorgio Lucchi
发明人： Terence Ward , Khwaja Rahman , James Nagashima , Fabio Crescimbini , Federico Caricchi , Giorgio Lucchi
IPC分类号： H02K1/18 , H02K1/27 , H02K3/46 , H02K3/50 , H02K5/20 , H02K7/14 , H02K9/22 , H02K21/24 , H02K9/00 , H02K9/20
CPC分类号： H02K3/46 , B60L1/02 , B60L3/0061 , B60L15/025 , B60L2220/14 , B60L2220/16 , B60L2220/50 , B60L2240/421 , B60L2240/423 , B60L2240/425 , B60L2240/427 , B60L2240/429 , B60L2270/145 , H02K1/182 , H02K1/2793 , H02K5/20 , H02K7/14 , H02K9/22 , H02K21/24 , H02P21/00 , Y02T10/641 , Y02T10/643
摘要： Methods and apparatus are provided for an axial electric motor. The apparatus comprises, a stator having coils thereon for producing a magnetic field, a rotor rotated by the magnetic field, an output shaft coupled to the rotor, and a ring incorporating a coolant channel circumferentially engaging the stator for absorbing heat and reaction torque from the stator. It is preferable that that the ring have inwardly extending teeth that mesh with the coils on the stator. The space between the teeth and the coils is preferably filled with a substantially solid thermally conductive material to transmit stator reaction torque to the teeth and cool the stator. The coils are preferably formed from a flat ribbon a portion of whose principal surface is perpendicular to the teeth. A supporting frame is desirably fixedly coupled to the ring and rotatably coupled to the output shaft.
摘要翻译：为轴向电动机提供了方法和装置。该装置包括：定子，其上具有用于产生磁场的线圈，通过磁场旋转的转子;耦合到转子的输出轴;以及环，其包括周向地接合定子的冷却剂通道，用于吸收来自定子。优选地，环具有与定子上的线圈啮合的向内延伸的齿。齿和线圈之间的空间优选地填充有基本上固体的导热材料，以将定子反作用扭矩传递到齿并冷却定子。线圈优选由扁平带形成，其主表面垂直于齿的一部分。支撑框架期望地固定地联接到环并可旋转地联接到输出轴。

10. 发明申请

US20070132415A1 Method and apparatus for sensorless position control of a permanent magnet synchronous motor (PMSM) drive system 失效
标题翻译：永磁同步电机（PMSM）驱动系统的无传感器位置控制方法和装置
公开(公告)号：US20070132415A1
公开(公告)日：2007-06-14
申请号：US11300525
申请日：2005-12-14
申请人： Nitinkumar Patel , Bon-Ho Bae , James Nagashima
发明人： Nitinkumar Patel , Bon-Ho Bae , James Nagashima
IPC分类号： H02P7/00
CPC分类号： H02P21/24 , H02P25/03
摘要： Methods and apparatus are provided for generating zero-sequence voltages based on voltage commands and a motor output signal. At least one of the methods includes, but is not limited to, receiving a torque command and generating three-phase voltage commands based on the torque command. The method also includes, but is not limited to, generating a motor output responsive to the three-phase voltage commands and generating three-phase zero-sequence voltage samples based on the three-phase voltage commands and the motor output.
摘要翻译：提供了基于电压指令和电机输出信号产生零序电压的方法和装置。方法中的至少一个包括但不限于接收转矩指令并且基于转矩指令产生三相电压命令。该方法还包括但不限于响应于三相电压命令产生电动机输出并且基于三相电压命令和电动机输出产生三相零序电压采样。

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