公开(公告)号：US07642737B2

公开(公告)日：2010-01-05

申请号：US11685729

申请日：2007-03-13

申请人： Bonho Bae ,  Steven E. Schulz ,  Silva Hiti ,  Nitinkumar R. Patel

发明人： Bonho Bae ,  Steven E. Schulz ,  Silva Hiti ,  Nitinkumar R. Patel

IPC分类号： H02P21/00

CPC分类号： H02P21/22

摘要： A control architecture for an electrical inverter includes a command limiter that is realized as a circular voltage limiter. The command limiter includes a Cartesian-to-polar converter coupled to a command source such as a synchronous frame current regulator. The Cartesian-to-polar converter provides magnitude and phase components for d-q command voltages. The command limiter further includes a magnitude limiter that limits the magnitude component to the maximum fundamental voltage component of the inverter, and a polar-to-Cartesian converter that converts the limited magnitude component and the phase component into modified d-q command voltages.

摘要翻译： 用于逆变器的控制结构包括实现为圆形电压限制器的指令限制器。 命令限制器包括耦合到诸如同步帧电流调节器的命令源的笛卡尔到极化转换器。 笛卡尔到极化转换器为d-q指令电压提供幅度和相位分量。 命令限制器还包括限幅器，其将幅度分量限制到逆变器的最大基波电压分量;以及极限到笛卡尔转换器，其将受限幅度分量和相位分量转换为修改的d-q指令电压。

公开(公告)号：US07622877B2

公开(公告)日：2009-11-24

申请号：US11685722

申请日：2007-03-13

申请人： Steven E. Schulz ,  Silva Hiti ,  Khwaja M. Rahman

发明人： Steven E. Schulz ,  Silva Hiti ,  Khwaja M. Rahman

IPC分类号： H02P7/00

CPC分类号： H02P21/02 ,  H02P21/0089 ,  H02P21/05

摘要： Methods and systems are provided for controlling permanent magnet machines under varying loads. The method comprises generating a d-axis voltage command and a q-axis voltage command, producing a modified d-axis current command based on the q-axis voltage command and a d-axis current command, converting the modified d-axis current command to a modified d-axis voltage command, and transmitting the modified d-axis voltage command and the q-axis voltage command to the PM machine. The d-axis voltage command is based on a d-axis current command.

摘要翻译： 提供了用于在变化的负载下控制永磁体机器的方法和系统。 该方法包括生成d轴电压指令和q轴电压指令，基于q轴电压指令和d轴电流指令产生修正的d轴电流指令，将修正的d轴电流指令 到修改的d轴电压指令，并将修改的d轴电压命令和q轴电压命令发送到PM机。 d轴电压指令基于d轴电流指令。

公开(公告)号：US20090267555A1

公开(公告)日：2009-10-29

申请号：US12108868

申请日：2008-04-24

申请人： Steven E. Schulz ,  Goro Tamai ,  Silva Hiti

发明人： Steven E. Schulz ,  Goro Tamai ,  Silva Hiti

IPC分类号： H02P6/10

CPC分类号： H02P29/50

摘要： Methods and systems are provided for reducing torque ripple in an electric motor. A method comprises receiving a torque command and determining a cancellation current command based on the torque command. The method further comprises generating a harmonic cancellation command based on the cancellation current command, wherein the harmonic cancellation command compensates for a phase shift and an attenuation introduced by a current regulated control module coupled to an inverter coupled to the electric motor. The method further comprises providing the harmonic cancellation command to the current regulated control module, wherein the current regulated control module is configured to control the inverter in response to the harmonic cancellation command and the torque command.

摘要翻译： 提供了减少电动机转矩波动的方法和系统。 一种方法包括：接收转矩指令并根据转矩指令确定取消电流指令。 该方法还包括基于消除电流指令产生谐波消除命令，其中谐波消除指令补偿由耦合到与电动机耦合的逆变器的电流调节控制模块引入的相移和衰减。 该方法还包括向当前调节控制模块提供谐波消除命令，其中当前调节控制模块被配置为响应于谐波消除命令和扭矩命令来控制逆变器。

公开(公告)号：US07599204B2

公开(公告)日：2009-10-06

申请号：US11468005

申请日：2006-08-29

申请人： Lateef A. Kajouke ,  Silva Hiti

发明人： Lateef A. Kajouke ,  Silva Hiti

IPC分类号： H02M5/25

CPC分类号： H02M7/538

摘要： A method includes controlling the cyclo-converter 7 in coordination with controlling a coupled HF inverter 3. The controlling of the cyclo-converter 7 provides at least a first freewheeling FW period in the cyclo-converter for each cycle of the HF inverter 3. The controlling of the HF inverter provides a freewheeling period in the HF inverter 3 each time the first freewheeling period is provided in the cyclo-converter.

摘要翻译： 一种方法包括与控制耦合的HF逆变器3协调地控制循环转换器7.循环转换器7的控制为HF逆变器3的每个周期在循环转换器中提供至少第一个续流FW周期。 每当在循环转换器中提供第一个续流周期时，HF逆变器的控制在HF逆变器3中提供续流周期。

公开(公告)号：US07518279B2

公开(公告)日：2009-04-14

申请号：US11829275

申请日：2007-07-27

申请人： Sibaprasad Chakrabarti ,  Silva Hiti

发明人： Sibaprasad Chakrabarti ,  Silva Hiti

IPC分类号： H02K19/26

CPC分类号： H02K3/28 ,  H02K11/33 ,  Y02T10/7258

摘要： Electric motor systems are provided for use in vehicles. In an embodiment, by way of example only, the system includes a first inverter, a second inverter, and a motor electrically coupled to the first and the second inverters. The motor includes a stator including a plurality of slots formed therein and a plurality of windings. The plurality of windings is disposed at least partially in the slots, and each winding includes a first coil and a second coil. The first coil has a first number of turns, and the second coil has a second number of turns that is unequal to the first number of turns. The first coil of each winding is electrically coupled to the first inverter, and the second coil of each winding is electrically coupled to the second inverter.

摘要翻译： 提供电动机系统用于车辆。 在一个实施例中，仅作为示例，该系统包括电耦合到第一和第二逆变器的第一逆变器，第二逆变器和电动机。 电动机包括定子，其包括形成在其中的多个槽和多个绕组。 多个绕组至少部分地设置在槽中，并且每个绕组包括第一线圈和第二线圈。 第一线圈具有第一圈数，并且第二线圈具有不等于第一圈数的第二圈数。 每个绕组的第一线圈电耦合到第一反相器，并且每个绕组的第二线圈电耦合到第二反相器。

公开(公告)号：US07061134B2

公开(公告)日：2006-06-13

申请号：US10632257

申请日：2003-08-01

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

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

IPC分类号： H02P9/04 ,  H02P5/34

CPC分类号： H02P27/12 ,  H02M7/5387 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： G05B11/36

CPC分类号： H02P6/185 ,  H02P6/183 ,  H02P21/18 ,  H02P2203/11 ,  H02P2207/01

摘要： 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.

摘要翻译： 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：US06504329B2

公开(公告)日：2003-01-07

申请号：US09829106

申请日：2001-04-09

申请人： Constantin C. Stancu ,  Silva Hiti ,  James M. Nagashima

发明人： Constantin C. Stancu ,  Silva Hiti ,  James M. Nagashima

IPC分类号： H02P706

CPC分类号： B60L15/025 ,  H02P21/08 ,  Y02T10/643

摘要： 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.

公开(公告)号：US6163128A

公开(公告)日：2000-12-19

申请号：US377927

申请日：1999-08-20

申请人： Silva Hiti ,  Constantin C. Stancu ,  Dragan S. Maric

发明人： Silva Hiti ,  Constantin C. Stancu ,  Dragan S. Maric

IPC分类号： B60L11/18 ,  B60L15/02 ,  B60L15/20 ,  H02P5/28

CPC分类号： B60L11/1803 ,  B60L15/025 ,  B60L2220/14 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7258

摘要： A surface-mounted permanent magnet synchronous machine drive 10 and a method 30 of controlling the machine drive. Flux weakening and current regulating loops 70, 60 cooperate to provide automatic transition to the flux weakening mode (operation above base speed), regardless of DC bus voltage, load or other operating conditions. This feature provides significant performance improvement. No look-up tables are used in the flux weakening loop. The on-set point for flux weakening is automatically adjusted, and may be changed through software. An appropriate d-axis current component is injected over the entire speed range, providing the maximum available torque (which corresponds to the q-axis current component). The control method works with fixed frequency current compensators.

摘要翻译： 表面安装永磁同步电机驱动装置10和控制机器驱动的方法30。 磁通弱化和电流调节回路70,60协作以提供自由转换到磁通弱化模式（高于基本速度的操作），而不管DC总线电压，负载或其它操作条件如何。 此功能可显着提升性能。 磁通弱化回路中没有使用查找表。 磁通弱化的设定点自动调整，可通过软件更改。 在整个速度范围内注入适当的d轴电流分量，提供最大可用转矩（对应于q轴电流分量）。 控制方式适用于固定频率电流补偿器。