公开(公告)号：US08193747B2

公开(公告)日：2012-06-05

申请号：US12473988

申请日：2009-05-28

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

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

IPC分类号： H02P21/00

CPC分类号： H02P5/74 ,  H02P21/22

摘要： 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.

摘要翻译： 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：US20110231040A1

公开(公告)日：2011-09-22

申请号：US12725543

申请日：2010-03-17

申请人： Steven E. Schulz ,  Goro Tamai ,  Lan Wang ,  Karl Andrew Sime ,  Silva Hiti ,  Brian A. Welchko

发明人： Steven E. Schulz ,  Goro Tamai ,  Lan Wang ,  Karl Andrew Sime ,  Silva Hiti ,  Brian A. Welchko

IPC分类号： G06F19/00

CPC分类号： B60L15/2009 ,  B60L15/08 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275

摘要： A method for controlling an inverter coupled to an electric motor for a vehicle includes generating a discontinuous PWM signal for the inverter when a torque of the electric motor and a speed of the electric motor are substantially zero, and when at least one predetermined vehicle condition is met.

摘要翻译： 一种用于控制与车辆的电动机相连的逆变器的方法包括当电动机的转矩和电动机的速度基本上为零时产生用于逆变器的不连续的PWM信号，并且当至少一个预定的车辆状况是 见面

公开(公告)号：US20110089883A1

公开(公告)日：2011-04-21

申请号：US12582733

申请日：2009-10-21

申请人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

发明人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

IPC分类号： G01R31/06

CPC分类号： G01R31/343 ,  G01R31/346

摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized zero sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.

摘要翻译： 检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。 该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。 当电压值超过相应的阈值时，执行控制动作。 电压值是以下中的一个或多个：归一化零序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。 一种装置检测故障，并包括如上所述的马达控制器和算法。 该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

公开(公告)号：US07679310B2

公开(公告)日：2010-03-16

申请号：US11923293

申请日：2007-10-24

申请人： Steven E. Schulz ,  Brian A. Welchko ,  Silva Hiti

发明人： Steven E. Schulz ,  Brian A. Welchko ,  Silva Hiti

IPC分类号： H02P23/00

CPC分类号： B60L15/08 ,  B60L11/1803 ,  B60L15/007 ,  B60L15/20 ,  B60L2210/42 ,  B60L2240/421 ,  B60L2240/423 ,  H02P27/08 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7241 ,  Y02T10/7275

摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to either a commanded torque of the electric motor being above a first torque level, or a commanded speed of the electric motor being above a first speed level, controlling the power inverter with a discontinuous pulse width modulated (DPWM) signal to generate a modulated voltage waveform for driving the electric motor. Additionally, the embodiments control the power inverter by, responsive to both a commanded torque of the electric motor being below the first torque level, and a commanded speed of the electric motor being below the first speed level, controlling the power inverter with a continuous pulse width modulated (CPWM) signal to generate the modulated voltage waveform for driving the electric motor.

摘要翻译： 提供了一种用于控制汽车电驱动系统中的电力逆变器的方法和系统。 各种实施例通过响应于电动机的指令转矩高于第一转矩水平或电动机的指令速度高于第一速度水平来控制功率逆变器，以不连续脉冲宽度控制功率逆变器 调制（DPWM）信号以产生用于驱动电动机的调制电压波形。 此外，这些实施例通过响应于电动机的指令转矩低于第一转矩水平和电动机的指令速度低于第一速度水平来控制功率逆变器，以连续脉冲 宽度调制（CPWM）信号以产生用于驱动电动机的调制电压波形。

公开(公告)号：US07576500B2

公开(公告)日：2009-08-18

申请号：US11756349

申请日：2007-05-31

申请人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

发明人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

IPC分类号： H02P1/00

CPC分类号： H02P27/08 ,  B60L2270/142 ,  H02M1/14 ,  Y02T10/642

摘要： Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one switch operating at a switching frequency. The switching frequency is controlled as a function of a rate of operation of the motor. The function is characterized by one of a first substantially linear portion having a first slope when the switching frequency is less than or equal to a selected switching frequency and a second substantially linear portion having a second slope if the switching frequency is greater than the selected frequency, the selected switching frequency being greater than the low resonant frequency and a substantially linear portion having a y-intercept being greater than the low resonant frequency.

摘要翻译： 提供了用于操作耦合到车辆中的电气总线的马达的方法和系统。 确定电气总线的选定谐振频率。 所选择的谐振频率包括低谐振频率和高谐振频率。 通过至少一个以开关频率工作的开关将电力提供给电动机。 开关频率根据电机的运行速度进行控制。 该功能的特征在于当开关频率小于或等于所选择的开关频率时具有第一斜率的第一基本线性部分中的一个以及具有第二斜率的第二基本线性部分，如果开关频率大于所选择的频率 ，所选择的开关频率大于低谐振频率，并且具有大于低谐振频率的y截距的基本线性部分。

公开(公告)号：US20090066163A1

公开(公告)日：2009-03-12

申请号：US11853202

申请日：2007-09-11

申请人： Gabriel Gallegos-Lopez ,  Milun Perisic ,  George John ,  Gregory S. Smith ,  Silva Hiti

发明人： Gabriel Gallegos-Lopez ,  Milun Perisic ,  George John ,  Gregory S. Smith ,  Silva Hiti

IPC分类号： H02J3/00

CPC分类号： H02M1/10 ,  B60L11/1868 ,  B60L2200/26 ,  H02M7/48 ,  H02P2201/07 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7066 ,  Y10T307/50 ,  Y10T307/615 ,  Y10T307/729

摘要： Systems and methods are disclosed for a two-source series inverter. The systems and methods combine operation of a first voltage source and a second voltage source in series powering a novel voltage combining arrangement and a conventional inverter via a switch configuration to power a load. The switch configuration is controlled by a plurality of control signals generated by a controller based on a variety of control modes, and feedback signals.

摘要翻译： 公开了用于双源串联逆变器的系统和方法。 所述系统和方法将通过开关配置串联供电的新型电压组合装置和常规逆变器的第一电压源和第二电压源的操作相结合以对负载供电。 开关配置由控制器基于各种控制模式和反馈信号产生的多个控制信号来控制。

公开(公告)号：US20090026895A1

公开(公告)日：2009-01-29

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： H02K3/28 ,  H02K11/00

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：US07471526B2

公开(公告)日：2008-12-30

申请号：US11676574

申请日：2007-02-20

申请人： Brian A Welchko ,  Bonho Bae ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian A Welchko ,  Bonho Bae ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： H02M7/537 ,  H02P23/00

CPC分类号： H03K3/017 ,  H02M7/5395 ,  H02M2001/0025 ,  H02P27/06

摘要： Methods and apparatus are provided for reducing voltage distortion effects at low speed operation in electric drives. The method comprises receiving a first signal having a duty cycle with a range between minimum and maximum achievable duty cycles, producing a second duty cycle based on the minimum achievable duty cycle if the duty cycle is within a distortion range and less than a first clipping value, producing a second duty cycle based on the closer of minimum and maximum pulse widths if the duty cycle is within the distortion range and between the first and a second clipping value, producing a second duty cycle based on the maximum achievable duty cycle if the duty cycle is within the distortion range and greater than the second clipping value, and transmitting a second signal to the voltage source inverter having the second duty cycle.

摘要翻译： 提供了用于在电驱动器中降低低速运行时的电压失真效应的方法和装置。 该方法包括接收具有在最小和最大可实现占空比之间的范围的占空比的第一信号，如果占空比在失真范围内并小于第一限幅值，则基于最小可实现占空比产生第二占空比 如果占空比在失真范围内，并且在第一和第二限幅值之间，则基于更小的最小和最大脉冲宽度产生第二占空比，如果占空比基于最大可实现的占空比，则产生第二占空比 循环处于失真范围内并且大于第二限幅值，并且将第二信号发送到具有第二占空比的电压源逆变器。

公开(公告)号：US20080298785A1

公开(公告)日：2008-12-04

申请号：US11756349

申请日：2007-05-31

申请人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A. Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

发明人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A. Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

IPC分类号： H02P7/285

CPC分类号： H02P27/08 ,  B60L2270/142 ,  H02M1/14 ,  Y02T10/642

摘要： Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one switch operating at a switching frequency. The switching frequency is controlled as a function of a rate of operation of the motor. The function is characterized by one of a first substantially linear portion having a first slope when the switching frequency is less than or equal to a selected switching frequency and a second substantially linear portion having a second slope if the switching frequency is greater than the selected frequency, the selected switching frequency being greater than the low resonant frequency and a substantially linear portion having a y-intercept being greater than the low resonant frequency.

摘要翻译： 提供了用于操作耦合到车辆中的电气总线的马达的方法和系统。 确定电气总线的选定谐振频率。 所选择的谐振频率包括低谐振频率和高谐振频率。 通过至少一个以开关频率工作的开关将电力提供给电动机。 开关频率根据电机的运行速度进行控制。 该功能的特征在于当开关频率小于或等于所选择的开关频率时具有第一斜率的第一基本线性部分中的一个以及具有第二斜率的第二基本线性部分，如果开关频率大于所选择的频率 ，所选择的开关频率大于低谐振频率，并且具有大于低谐振频率的y截距的基本线性部分。

公开(公告)号：US20080297100A1

公开(公告)日：2008-12-04

申请号：US11756421

申请日：2007-05-31

申请人： Silva Hiti ,  Steven E. Schulz ,  Brian A. Welchko

发明人： Silva Hiti ,  Steven E. Schulz ,  Brian A. Welchko

IPC分类号： H02P27/04

CPC分类号： H02M7/53875 ,  B60L15/025 ,  B60L2210/42 ,  B60L2240/70 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02T10/643 ,  Y02T10/7241 ,  Y02T10/7291 ,  Y02T90/16

摘要： Apparatus, systems, and methods are provided for reducing voltage source inverter losses. One apparatus includes a sensor couplable to the motor and configured to sense an operating frequency of the motor and an amount of torque produced by the motor. The apparatus also includes a controller coupled to the sensor, the controller configured to determine a zero vector modulation (ZVM) based on the sensed frequency and torque. A system includes means for sensing a threshold output frequency of the motor and means for sensing a threshold torque of the motor. The system also includes means for determining a ZVM for the inverter based on the sensed threshold frequency and threshold torque. One method includes sensing that a motor is operating below a threshold frequency and is producing torque above a threshold torque amount. The method also includes determining a ZVM for the inverter based on the sensed frequency and torque.

摘要翻译： 提供了用于减少电压源逆变器损耗的装置，系统和方法。 一种装置包括可耦合到电动机并且被配置为感测电动机的工作频率和由电动机产生的转矩的量的传感器。 该装置还包括耦合到传感器的控制器，该控制器被配置成基于感测到的频率和转矩来确定零矢量调制（ZVM）。 系统包括用于感测电动机的阈值输出频率的装置和用于感测电动机的阈值转矩的装置。 该系统还包括用于基于感测的阈值频率和阈值扭矩来确定用于逆变器的ZVM的装置。 一种方法包括检测电动机工作在阈值频率以下并且产生高于阈值扭矩量的转矩。 该方法还包括基于感测的频率和转矩来确定逆变器的ZVM。