公开(公告)号：US08957563B2

公开(公告)日：2015-02-17

申请号：US13314065

申请日：2011-12-07

Applicant: Khwaja M. Rahman ,  Constantin C. Stancu ,  Sinisa Jurkovic ,  Xinyu Zhou ,  Qiang Niu ,  Xu Han

Inventor： Khwaja M. Rahman ,  Constantin C. Stancu ,  Sinisa Jurkovic ,  Xinyu Zhou ,  Qiang Niu ,  Xu Han

IPC: H02K1/06

CPC classification number: H02K1/24 ,  H02K29/03 ,  H02K2201/03 ,  H02K2213/03

Abstract: An electric machine is provided with a rotor configured to be rotatable within a stator. A first and second tooth are disposed circumferentially along an outer perimeter of the rotor and at least partially define a first slot. The first and the second tooth define a respective first and second outer edge extending between a respective tooth base and a respective tooth tip. An arc radius from the origin to the outer perimeter of the rotor varies along the first outer edge of the first tooth, thereby creating a first non-uniform gap between the rotor and the stator. The arc radius from the origin to the outer perimeter of the rotor varies along the second outer edge of the second tooth, thereby creating a second non-uniform gap between the rotor and the stator. The rotor geometry is configured to reduce torque ripple without skewing either the rotor or the stator.

Abstract translation: 电机设置有可在定子内旋转的转子。 第一和第二齿沿着转子的外周边沿圆周设置并且至少部分地限定第一槽。 第一和第二齿限定在相应的齿根和相应的齿尖之间延伸的相应的第一和第二外边缘。 从转子的原点到外周的弧半径沿着第一齿的第一外边缘变化，从而在转子和定子之间产生第一不均匀的间隙。 从转子的原点到外周的弧半径沿着第二齿的第二外边缘变化，从而在转子和定子之间产生第二非均匀间隙。 转子几何形状被配置为减小转矩脉动，而不会使转子或定子歪斜。

公开(公告)号：US08390240B2

公开(公告)日：2013-03-05

申请号：US12137340

申请日：2008-06-11

Applicant: Constantin C. Stancu ,  Silva Hiti ,  Robert T. Dawsey ,  Erik Hatch ,  Matthew D. Laba ,  Peter J. Savagian

Inventor： Constantin C. Stancu ,  Silva Hiti ,  Robert T. Dawsey ,  Erik Hatch ,  Matthew D. Laba ,  Peter J. Savagian

IPC: H02P23/00

CPC classification number: H02P21/14 ,  B60L15/025 ,  B60L2220/12 ,  B60L2220/14 ,  Y02T10/643

Abstract: Systems and methods are provided for an automotive drive system using an absolute position sensor for field-oriented control of an induction motor. An automotive drive system comprises an induction motor having a rotor, and a position sensor coupled to the induction motor. The position sensor is configured to sense an absolute angular position of the rotor. A processor may be coupled to the position sensor and configured to determine a relative angular position of the rotor based on a difference between the absolute angular position and an initial angular position obtained when the induction motor is started. A controller may be coupled to the induction motor and the processor and configured to provide field-oriented control of the induction motor based on the relative angular position of the rotor.

Abstract translation: 为使用绝对位置传感器用于感应电动机的场定向控制的汽车驱动系统提供系统和方法。 汽车驱动系统包括具有转子的感应电动机和耦合到感应电动机的位置传感器。 位置传感器构造成感测转子的绝对角位置。 处理器可以耦合到位置传感器并且被配置为基于绝对角位置和当感应电动机启动时获得的初始角位置之间的差来确定转子的相对角位置。 控制器可以耦合到感应电动机和处理器并且被配置为基于转子的相对角位置来提供感应电动机的场定向控制。

公开(公告)号：US08018187B2

公开(公告)日：2011-09-13

申请号：US12348684

申请日：2009-01-05

Applicant: Steven E. Schulz ,  Constantin C. Stancu ,  Yo Chan Son

Inventor： Steven E. Schulz ,  Constantin C. Stancu ,  Yo Chan Son

IPC: H02P1/46

CPC classification number: H02P6/185 ,  H02P6/183 ,  H02P21/18 ,  H02P21/32 ,  H02P2203/11

Abstract: Methods and apparatus are provided for aligning a control reference axis with a magnetic north of a permanent magnet motor. The method includes the steps of injecting a predetermined stator current on an estimated reference axis of the permanent magnet motor and introducing predetermined error on the estimated reference axis. The method further includes the steps of determining if a speed of the permanent magnet motor is greater than a predetermined threshold speed and setting the control reference axis to 180° added to the estimated reference axis if the speed of the permanent magnet motor is greater than the predetermined threshold speed or setting the control reference axis to the estimated reference axis if the speed of the permanent magnet motor is less than or equal to the predetermined threshold speed.

Abstract translation: 提供了用于使控制参考轴与永磁电动机的磁北对准的方法和装置。 该方法包括以下步骤：将预定定子电流注入到永磁电动机的估计参考轴上，并将预定误差引入估计的参考轴。 该方法还包括以下步骤：如果永磁电动机的速度大于预定阈值速度，则将该控制基准轴设定为估计参考轴的180°，如果永磁电动机的速度大于 如果永磁电动机的速度小于或等于预定阈值速度，则将控制参考轴设置为估计的参考轴。

公开(公告)号：US07936083B2

公开(公告)日：2011-05-03

申请号：US12117543

申请日：2008-05-08

Applicant: Constantin C. Stancu ,  Robert T. Dawsey ,  Mark L. Selogie

Inventor： Constantin C. Stancu ,  Robert T. Dawsey ,  Mark L. Selogie

IPC: B06L1/00 ,  H02J1/00

CPC classification number: H02M1/10 ,  Y10T29/49002 ,  Y10T307/658 ,  Y10T307/675

Abstract: An embodiment of a system for multiple source power conversion is implemented in a vehicle that includes an alternating current (AC) power source and first and second direct current (DC) power sources. The system includes an inverter, a DC-to-DC converter, and a controller. The controller receives external commands, inverter feedback signals, and DC-to-DC converter feedback signals, and executes and inverter control algorithm and DC-to-DC converter control algorithm. An embodiment of a method for multiple source power conversion between an AC power source, and first and second DC power sources includes receiving external commands from a remote source, inverter feedback signals from an inverter, and DC-to-DC converter feedback signals from a DC-to-DC converter. The method also includes executing an inverter control algorithm and a DC-to-DC converter control algorithm to generate drive signals for the inverter and DC-to-DC converter, respectively, based on the received commands and feedback signals.

Abstract translation: 用于多源功率转换的系统的实施例在包括交流（AC）电源和第一和第二直流（DC）电源的车辆中实现。 该系统包括逆变器，DC-DC转换器和控制器。 控制器接收外部命令，逆变器反馈信号和DC-DC转换器反馈信号，并执行逆变器控制算法和DC-DC转换器控制算法。 一种用于在AC电源和第一和第二DC电源之间进行多源电力转换的方法的实施例包括从远程源接收外部命令，来自逆变器的逆变器反馈信号和来自逆变器的DC-DC转换器反馈信号 直流到直流转换器。 该方法还包括执行逆变器控制算法和DC-DC转换器控制算法，以分别基于接收到的命令和反馈信号来产生逆变器和DC-DC转换器的驱动信号。

公开(公告)号：US07633194B2

公开(公告)日：2009-12-15

申请号：US11553028

申请日：2006-10-26

Applicant: Robert T Dawsey ,  Constantin C. Stancu ,  Eric R. Ostrom ,  Young Doo

Inventor： Robert T Dawsey ,  Constantin C. Stancu ,  Eric R. Ostrom ,  Young Doo

IPC: H02K9/08

CPC classification number: H02K1/20 ,  B60L1/003 ,  B60L3/0061 ,  B60L2220/46 ,  B60L2220/50 ,  B60L2240/425 ,  H02K5/20 ,  H02K9/10 ,  H02K9/19 ,  Y02T10/641 ,  Y02T10/642

Abstract: A coaxial stack of laminations for a stator of an electrical machine uses laminations that are substantially identical and in direct abutment with one another. Each of the laminations has an outer periphery and an inner periphery with the outer periphery being defined by an array of outwardly projecting pins and the inner periphery being defined by an array of inwardly projecting teeth. The outwardly projecting pins cooperate with a jacket surrounding the stack to provide a cooling space through which cooling liquid flows while the teeth provide spaces therebetween for receiving for receiving stator windings. The number of pins (npin) is proportional to the number of teeth (nth) according to the relationship (2K+1)/(2Kth) times the number of teeth (nth), where K is a selected integer number and Kth is the number of teeth past which each lamination is rotated with respect to adjacent laminations so that spaces between the teeth of adjacent laminations are aligned.

Abstract translation: 用于电机的定子的同轴叠层叠片使用基本上相同并且彼此直接邻接的叠片。 每个叠片具有外周边和内周边，其外围由向外突出的销的阵列限定，并且内周由内向突出的齿阵列限定。 向外突出的销与围绕堆叠的护套配合以提供冷却空间，冷却液通过该空间流动，同时齿在其间提供空间用于接收定子绕组。 根据与齿数（nth）的关系（2K + 1）/（2Kth）乘以（n）的关系（n），针数（npin）与齿数（nth）成比例，其中K是选定的整数，Kth是 每个层叠相对于相邻叠片旋转的齿数，使得相邻叠片的齿之间的空间对准。

公开(公告)号：US07479723B2

公开(公告)日：2009-01-20

申请号：US11668910

申请日：2007-01-30

Applicant: Robert T Dawsey ,  Constantin C. Stancu ,  Eric R. Ostrom ,  Young Doo

Inventor： Robert T Dawsey ,  Constantin C. Stancu ,  Eric R. Ostrom ,  Young Doo

IPC: H02K1/27

CPC classification number: H02K1/2766

Abstract: A rotor for an interior permanent magnet machine has a rotor body having an output shaft and a first cavity filled with magnetic material. Second cavities are disposed inboard of the first cavities and are not filled with magnetic material. Non-magnetic rods extend through the second cavities and protrude beyond end faces of the rotor body. The rods are press-fit in blind bores formed in non-magnetic end plates disposed adjacent the end faces of the rotor body. Shrink disks are shrunk around projecting ends of the output shaft in abutting relation with the end plates. In order to prevent induced voltage from generating current in the cage formed by the rods and end plates, an oxide layer is disposed between the rods and blind bores in the end plates.

Abstract translation: 用于内部永磁体机器的转子具有转子体，其具有输出轴和填充有磁性材料的第一腔体。 第二空腔设置在第一空腔的内侧，并且不填充磁性材料。 非磁性棒延伸穿过第二腔并突出超过转子体的端面。 杆被压配合在形成在邻近转子体的端面设置的非磁性端板中的盲孔中。 收缩盘在输出轴的突出端处与端板邻接而收缩。 为了防止感应电压在由杆和端板形成的保持架中产生电流，在端板中的棒和盲孔之间设置氧化物层。

公开(公告)号：US07061134B2

公开(公告)日：2006-06-13

申请号：US10632257

申请日：2003-08-01

Applicant: Silva Hiti ,  Constantin C. Stancu ,  Khwaja Rahman ,  Scott D. Downer ,  James M. Nagashima ,  Eric R. Ostrom

Inventor： Silva Hiti ,  Constantin C. Stancu ,  Khwaja Rahman ,  Scott D. Downer ,  James M. Nagashima ,  Eric R. Ostrom

IPC: H02P9/04 ,  H02P5/34

CPC classification number: H02P27/12 ,  H02M7/5387 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

Abstract: The present invention includes a method for thermal management in a voltage source inverter. The method includes sensing a low output frequency condition, determining a zero vector modulation responsive to the sensed low output frequency condition, and applying the determined zero vector modulation to reduce thermal stress in the voltage source inverter. The step of determining the zero vector modulation responsive to the sensed low output frequency condition includes mapping an output voltage requirement to a space vector structure and determining state switching space vectors based on the mapped output voltage requirement. The step of determining the state switching space vector includes determining active state switching space vectors associated with the state switching space vectors, determining duty cycles for the active state switching space vectors based on the active state switching space vectors, and determining a duty cycle for at least one zero state switching space vector based on the determined duty cycles of the active state switching space vectors and a switching period.

Abstract translation: 本发明包括电压源逆变器中的热管理方法。 该方法包括感测低输出频率条件，响应于感测的低输出频率条件确定零矢量调制，以及应用所确定的零矢量调制以减小电压源逆变器中的热应力。 响应于感测的低输出频率条件来确定零矢量调制的步骤包括将输出电压需求映射到空间矢量结构，并且基于映射的输出电压要求来确定状态切换空间矢量。 确定状态切换空间矢量的步骤包括确定与状态切换空间矢量相关联的活动状态切换空间矢量，基于活动状态切换空间矢量确定活动状态切换空间矢量的占空比，以及确定在 基于确定的活动状态切换空间矢量的占空比和切换周期的至少一个零状态切换空间矢量。

公开(公告)号：US07042186B2

公开(公告)日：2006-05-09

申请号：US10720626

申请日：2003-11-24

Applicant: Constantin C. Stancu ,  Silva Hiti ,  Steven E. Schulz ,  Nitinkumar R. Patel

Inventor： Constantin C. Stancu ,  Silva Hiti ,  Steven E. Schulz ,  Nitinkumar R. Patel

IPC: G05B11/36

CPC classification number: H02P6/185 ,  H02P6/183 ,  H02P21/18 ,  H02P2203/11 ,  H02P2207/01

Abstract: A method for decoupling a harmonic signal from an input signal wherein the harmonic signal is harmonic relative to a signal other than the input signal. An angular position of the other signal is multiplied by a value representing the harmonic to obtain an angular position multiple. A harmonic decoupling block uses the angular position multiple to obtain correction signals representing the harmonic signal, and subtracts the correction signals from the input current to decouple the harmonic signal from the input signal. This method is useful for decoupling unwanted harmonics from currents into which high-frequency signals have been injected for control of electric motors.

Abstract translation: 一种用于将谐波信号与输入信号去耦的方法，其中谐波信号是相对于输入信号以外的信号的谐波。 将另一信号的角位置乘以表示谐波的值，以获得角位置倍数。 谐波去耦块使用角位置倍数来获得表示谐波信号的校正信号，并从输入电流中减去校正信号，以将谐波信号与输入信号去耦。 该方法对于将不想要的谐波与已注入高频信号的电流去耦以控制电动机是有用的。

公开(公告)号：US06684483B2

公开(公告)日：2004-02-03

申请号：US09952319

申请日：2001-09-14

Applicant: Khwaja M. Rahman ,  Peter James Savagian ,  Francois J. Biais ,  Constantin C. Stancu

Inventor： Khwaja M. Rahman ,  Peter James Savagian ,  Francois J. Biais ,  Constantin C. Stancu

IPC: H02K1500

CPC classification number: H02K15/03 ,  Y02T10/641 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49075 ,  Y10T29/49803

Abstract: A method of fabricating a rotor for an electric traction motor including the steps of forming cavities in the rotor, injecting magnetic material in a portion of the cavities, injecting nonmagnetic material in a portion of the cavities, and post-magnetizing the magnetic material.

Abstract translation: 一种制造用于电动牵引电动机的转子的方法，包括以下步骤：在转子中形成空腔，在空腔的一部分中注入磁性材料，在空腔的一部分中注入非磁性材料，以及对磁性材料进行后磁化。

公开(公告)号：US06504329B2

公开(公告)日：2003-01-07

申请号：US09829106

申请日：2001-04-09

Applicant: Constantin C. Stancu ,  Silva Hiti ,  James M. Nagashima

Inventor： Constantin C. Stancu ,  Silva Hiti ,  James M. Nagashima

IPC: H02P706

CPC classification number: B60L15/025 ,  H02P21/08 ,  Y02T10/643

Abstract: A control scheme for an surface-mounted permanent-magnet synchronous (SMPMS) drive uses a combination of an open-loop magnetizing current reference calculation and a stabilizing feedback term, which speeds-up the torque transient response. The feedback term increases the stability margin during torque transients by increasing the available voltage margin for current control. The magnetizing current reference calculation takes into account the saturation effects in the SMPMS drive, which occur at peak torque points, and compensates for them. By taking into account saturation effects, stable operation at high speed is achieved, thereby increasing the speed range of the SMPMS drive.