公开(公告)号：US08193747B2

公开(公告)日：2012-06-05

申请号：US12473988

申请日：2009-05-28

Applicant: Gabriel Gallegos-Lopez ,  James M. Nagashima ,  Milun Perisic ,  Silva Hiti

Inventor： Gabriel Gallegos-Lopez ,  James M. Nagashima ,  Milun Perisic ,  Silva Hiti

IPC: H02P21/00

CPC classification number: H02P5/74 ,  H02P21/22

Abstract: A system is provided for controlling two alternating current (AC) machines via a five-phase PWM inverter module. The system comprises a first control loop, a second control loop, and a current command adjustment module. The current command adjustment module operates in conjunction with the first control loop and the second control loop to continuously adjust current command signals that control the first AC machine and the second AC machine such that they share the input voltage available to them without compromising the target mechanical output power of either machine. This way, even when the phase voltage available to either one of the machines decreases, that machine outputs its target mechanical output power.

Abstract translation: 提供一种用于通过五相PWM逆变器模块控制两个交流（AC）机器的系统。 该系统包括第一控制回路，第二控制回路和电流指令调整模块。 电流指令调整模块与第一控制回路和第二控制回路结合操作，以连续地调节控制第一交流电机和第二交流电机的电流指令信号，使得它们共享可用的输入电压，而不损害目标机械 两台机器的输出功率。 这样，即使可用于任何一台机器的相电压降低，该机器输出其目标机械输出功率。

公开(公告)号：US08053920B2

公开(公告)日：2011-11-08

申请号：US12178897

申请日：2008-07-24

Applicant: Terence G. Ward ,  George John ,  Edward P. Yankoski ,  Gregory S. Smith ,  James M. Nagashima

Inventor： Terence G. Ward ,  George John ,  Edward P. Yankoski ,  Gregory S. Smith ,  James M. Nagashima

IPC: B60L1/00

CPC classification number: H02M7/003 ,  H01L2224/49111

Abstract: A terminal assembly for a power converter is provided. The terminal assembly includes first and second conductive components and a current sensor. The first conductive component has first and second releasable attachment formations. The second conductive component has first and second portions with respective first and second widths. The first width is less than the second width. The first portion is releasably attached to the first conductive component with the second releasable attachment formation. The current sensor has an opening therethrough and is positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening. The current sensor is responsive to current flowing through the first portion of the second conductive component.

Abstract translation: 提供了一种用于功率转换器的端子组件。 端子组件包括第一和第二导电部件和电流传感器。 第一导电组件具有第一和第二可释放的附接结构。 第二导电部件具有相应的第一和第二宽度的第一和第二部分。 第一宽度小于第二宽度。 第一部分通过第二可释放的连接结构可释放地附接到第一导电部件。 电流传感器具有穿过其的开口并且位于第一导电部件和第二导电部件的第二部分之间，使得第一导电部件的第一部分延伸穿过开口。 电流传感器响应于流过第二导电部件的第一部分的电流。

公开(公告)号：US07956569B2

公开(公告)日：2011-06-07

申请号：US12132486

申请日：2008-06-03

Applicant: Brian A. Welchko ,  James M. Nagashima ,  Gregory S. Smith ,  Sibaprasad Chakrabarti ,  Milun Perisic ,  George John

Inventor： Brian A. Welchko ,  James M. Nagashima ,  Gregory S. Smith ,  Sibaprasad Chakrabarti ,  Milun Perisic ,  George John

IPC: H02P27/04

CPC classification number: B60L11/1868 ,  Y02T10/7005 ,  Y02T10/7066

Abstract: A double ended inverter system suitable for use with an AC electric traction motor of a vehicle is provided. The double ended inverter system cooperates with a first DC energy source and a second DC energy source, which may have different nominal voltages. The double ended inverter system includes an impedance source inverter subsystem configured to drive the AC electric traction motor using the first energy source, and an inverter subsystem configured to drive the AC electric traction motor using the second energy source. The double ended inverter system also utilizes a controller coupled to the impedance source inverter subsystem and to the inverter subsystem. The controller is configured to control the impedance source inverter subsystem and the inverter subsystem in accordance with a boost operating mode, a traditional inverter operating mode, and a recharge operating mode of the double ended inverter system.

Abstract translation: 提供适用于车辆的交流电动牵引电动机的双端逆变器系统。 双端逆变器系统与可能具有不同标称电压的第一DC能量源和第二DC能量源协作。 双端逆变器系统包括：阻抗源逆变器子系统，被配置为使用第一能量源驱动交流电力牵引电动机;以及逆变器子系统，被配置为使用第二能量源驱动交流电力牵引电动机。 双端逆变器系统还使用耦合到阻抗源逆变器子系统和逆变器子系统的控制器。 控制器配置为根据升压运行模式，传统逆变器工作模式和双端逆变器系统的充电操作模式控制阻抗源逆变器子系统和逆变器子系统。

公开(公告)号：US20100090625A1

公开(公告)日：2010-04-15

申请号：US12248186

申请日：2008-10-09

Applicant: JAMES M. NAGASHIMA ,  BRIAN A. WELCHKO

Inventor： JAMES M. NAGASHIMA ,  BRIAN A. WELCHKO

IPC: H02P3/14

CPC classification number: B60L50/00 ,  Y02T90/16

Abstract: An automotive system includes an electric motor, a direct current (DC) power supply coupled to the electric motor, a power converter including at least one conversion switch coupled between the electric motor and the DC power supply and a braking circuit coupled between the electric motor and the DC power supply, the braking circuit including a braking resistor and a braking switch, and a controller in operable communication with the electric motor, the DC power supply, the at least one conversion switch, and the braking switch. The controller is configured to operate the at least one conversion switch when the electric motor is mechanically actuated such that current flows from the electric motor to the DC power supply and selectively operate the braking switch when a braking parameter of the automotive system exceeds a predetermined threshold.

Abstract translation: 汽车系统包括电动机，耦合到电动机的直流（DC）电源，功率转换器，包括耦合在电动机和直流电源之间的至少一个转换开关和耦合在电动机之间的制动电路 以及所述直流电源，所述制动电路包括制动电阻器和制动开关，以及与所述电动机，所述直流电源，所述至少一个转换开关和所述制动开关可操作地通信的控制器。 控制器被配置为当电动机被机械致动时操作至少一个转换开关，使得当汽车系统的制动参数超过预定阈值时，电流从电动机流向直流电源并选择性地操作制动开关 。

公开(公告)号：US07525269B2

公开(公告)日：2009-04-28

申请号：US11300525

申请日：2005-12-14

Applicant: Nitinkumar R. Patel ,  Bon-Ho Bae ,  James M. Nagashima

Inventor： Nitinkumar R. Patel ,  Bon-Ho Bae ,  James M. Nagashima

IPC: H02P7/00

CPC classification number: H02P21/24 ,  H02P25/03

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090033274A1

公开(公告)日：2009-02-05

申请号：US12110946

申请日：2008-04-28

Applicant: Milun PERISIC ,  Silva HITI ,  Brian A. WELCHKO ,  Sibaprasad CHAKRABARTI ,  James M. NAGASHIMA ,  Gregory S. SMITH ,  George JOHN

Inventor： Milun PERISIC ,  Silva HITI ,  Brian A. WELCHKO ,  Sibaprasad CHAKRABARTI ,  James M. NAGASHIMA ,  Gregory S. SMITH ,  George JOHN

IPC: H02P27/06 ,  H02P4/00

CPC classification number: H02P4/00 ,  B60L3/0046 ,  B60L11/005 ,  B60L11/14 ,  B60L11/1803 ,  B60L11/1868 ,  B60L11/1887 ,  B60L2210/40 ,  B60L2210/46 ,  B60L2220/58 ,  H02P25/22 ,  Y02T10/641 ,  Y02T10/642 ,  Y02T10/70 ,  Y02T10/7022 ,  Y02T10/7066 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T90/34

Abstract: Systems and apparatus are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The inverter system comprises an electric motor having a first set of windings and a second set of windings. The inverter system further comprises a first inverter coupled to the first energy source and adapted to drive the electric motor, wherein the first set of windings are coupled to the first inverter. The inverter system also comprises a second inverter coupled to the second energy source and adapted to drive the electric motor, wherein the second set of windings are coupled to the second inverter. A controller is coupled to the first inverter and the second inverter to achieve desired power flow between the first energy source, the second energy source, and the electric motor.

Abstract translation: 为具有第一能量源和第二能量源的车辆中使用的逆变器系统提供系统和装置。 逆变器系统包括具有第一组绕组和第二组绕组的电动机。 逆变器系统还包括耦合到第一能量源并适于驱动电动机的第一逆变器，其中第一组绕组耦合到第一逆变器。 逆变器系统还包括耦合到第二能量源并适于驱动电动机的第二逆变器，其中第二组绕组耦合到第二逆变器。 控制器耦合到第一逆变器和第二逆变器，以在第一能量源，第二能量源和电动机之间实现期望的功率流。

公开(公告)号：US07332837B2

公开(公告)日：2008-02-19

申请号：US10909250

申请日：2004-07-29

Applicant: Terence G. Ward ,  Khwaja M. Rahman ,  James M. Nagashima ,  Fabio Crescimbini ,  Federico Caricchi ,  Giorgio Lucchi

Inventor： Terence G. Ward ,  Khwaja M. Rahman ,  James M. Nagashima ,  Fabio Crescimbini ,  Federico Caricchi ,  Giorgio Lucchi

IPC: H02K9/00

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07282886B1

公开(公告)日：2007-10-16

申请号：US11462596

申请日：2006-08-04

Applicant: Nitinkumar R. Patel ,  Bon-Ho Bae ,  James M. Nagashima ,  Tae-Suk Kwon ,  Seung Ki Sul

Inventor： Nitinkumar R. Patel ,  Bon-Ho Bae ,  James M. Nagashima ,  Tae-Suk Kwon ,  Seung Ki Sul

IPC: H02P1/24 ,  H02P5/28 ,  H02P7/00

CPC classification number: B60L15/025 ,  Y02T10/643

Abstract: Methods and system are provided for controlling permanent magnet motor drive systems. The method comprises the steps of adjusting a first current command in response to a first voltage error to produce a first adjusted current, adjusting a second current command in response to a second voltage error to produce a second adjusted current, limiting each of the first and second adjusted current below a maximum current, converting the first adjusted current to a first potential, converting the second current command to a second potential, and supplying the first and second potentials to the permanent magnet motor. The first voltage error is derived from the second current command, and the second voltage error is derived from the first current command.

Abstract translation: 提供用于控制永磁电机驱动系统的方法和系统。 该方法包括以下步骤：响应于第一电压误差调整第一电流指令以产生第一调整电流，响应于第二电压误差调整第二电流指令以产生第二调整电流，限制第一和第 第二调整电流低于最大电流，将第一调整电流转换为第一电位，将第二电流指令转换为第二电位，并将第一和第二电位提供给永磁电动机。 从第二电流指令导出第一电压误差，从第一电流指令导出第二电压误差。

公开(公告)号：US06989641B2

公开(公告)日：2006-01-24

申请号：US10452817

申请日：2003-06-02

Applicant: Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul

Inventor： Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul

IPC: B60L3/00

CPC classification number: G05B19/4062 ,  G05B2219/42329 ,  H02P29/032

Abstract: A method for controlling an electric machine having current sensors for less than every phase of the electric machine includes operating a processor to perform a test to preliminarily determine whether a fault exists in one or more of the current sensors and a test to finally determine that the fault exists in the one or more current sensors. The method further includes operating the processor to utilize a state observer of the electric machine to estimate states of the electric machine, wherein the state observer is provided state input measurements from each non-faulty current sensor, if any. Measurements from the current sensor or sensors determined to be faulty are disregarded. The processor controls the electric machine utilizing results from the state observer.

Abstract translation: 用于控制具有小于电机每相的电流传感器的电机的方法包括操作处理器以执行测试，以初步确定在一个或多个电流传感器中是否存在故障，并且进行测试以最终确定 一个或多个电流传感器存在故障。 该方法还包括操作处理器以利用电机的状态观察器来估计电机的状态，其中状态观察器被提供来自每个非故障电流传感器的状态输入测量值（如果有的话）。 来自当前传感器或被确定为有故障的传感器的测量被忽略。 处理器利用来自状态观测器的结果控制电机。

公开(公告)号：US06924617B2

公开(公告)日：2005-08-02

申请号：US10601726

申请日：2003-06-23

Applicant: Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Seung Ki Sul ,  Bon-Ho Bae

Inventor： Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Seung Ki Sul ,  Bon-Ho Bae

IPC: H02P6/18 ,  H02P21/00 ,  H02P1/46 ,  G05B11/42 ,  H02P1/18

CPC classification number: H02P6/18 ,  H02P6/181 ,  H02P21/00 ,  H02P21/0089 ,  H02P21/12 ,  H02P21/28 ,  H02P2203/05 ,  H02P2207/05

Abstract: A control system for an electric motor having a stator and rotor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a low speed control block to estimate the rotor angular position using stator current components operating in the controller, a high speed control block to estimate the rotor angular position using stator current components and stator flux position operating in the controller, a transition switch in the controller to vary operation between the low speed control block and the high speed control block, and where the inverter is controlled by six step operation.

Abstract translation: 一种具有定子和转子的电动机的控制系统，该定子和转子包括用于向电动机供电的逆变器，用于控制逆变器的控制器，使用在控制器中操作的定子电流分量来估计转子角位置的低速控制块， 高速控制块，用于使用定子电流分量和在控制器中操作的定子磁通位置来估计转子角位置，控制器中的转换开关改变低速控制块和高速控制块之间的操作，并且其中变频器 由六步操作控制。