公开(公告)号：US08706346B2

公开(公告)日：2014-04-22

申请号：US12916719

申请日：2010-11-01

Applicant: Wei D. Wang ,  Brian A. Welchko ,  Kevin P. Houle ,  Darren Crewes

Inventor： Wei D. Wang ,  Brian A. Welchko ,  Kevin P. Houle ,  Darren Crewes

IPC: B60L15/20 ,  G06F19/00

CPC classification number: B60L15/20 ,  B60L3/0061 ,  B60L11/14 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/441 ,  B60L2240/443 ,  B60L2270/145 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7275

Abstract: A method to control a powertrain having an electric motor includes monitoring a torque command to the motor, predicting a motor torque for the motor based upon the torque command, monitoring an actual motor torque of the motor, comparing the actual motor torque to the predicted torque, and indicating a motor fault when the actual motor torque and the predicted torque differ by more than a calibratable threshold.

Abstract translation: 控制具有电动机的动力传动系的方法包括：监测对电动机的转矩指令，基于转矩指令预测电动机的电动机转矩，监测电动机的实际电动机转矩，将实际电动机转矩与预测转矩进行比较 并且当实际电动机转矩和预测转矩差超过可校准阈值时指示电动机故障。

公开(公告)号：US08575879B2

公开(公告)日：2013-11-05

申请号：US13214042

申请日：2011-08-19

Applicant: Brian A. Welchko ,  Min Dai

Inventor： Brian A. Welchko ,  Min Dai

IPC: G05B9/02

CPC classification number: H02M1/32 ,  H02P3/22 ,  H02P21/0085 ,  H02P27/08 ,  H02P2203/09

Abstract: Embodiments of the present invention relate to methods, systems, a machine-readable medium operable in a controller, and apparatus for controlling a multi-phase inverter that drives a multi-phase electric machine. When a sensor fault is detected, a phase current angle is computed based on the feedback stator currents, and used to estimate an angular velocity and an angular position of a rotor of the multi-phase electric machine. When the estimated angular velocity of the multi-phase electric machine is less than a transition angular velocity threshold, an open-circuit response can be applied at the multi-phase inverter by controlling all switches in the multi-phase inverter drive to be open. By contrast, when the estimated angular velocity is greater than the transition angular velocity threshold, a short-circuit response can be applied at the multi-phase inverter by controlling selected switches in the multi-phase inverter drive to connect all phases of the multi-phase inverter to a single bus (e.g., either the plus bus or the minus bus).

Abstract translation: 本发明的实施例涉及可在控制器中操作的方法，系统，机器可读介质，以及用于控制驱动多相电机的多相逆变器的装置。 当检测到传感器故障时，基于反馈定子电流计算相电流角，并用于估计多相电机的转子的角速度和角位置。 当多相电机的估计角速度小于过渡角速度阈值时，可以通过控制多相逆变器驱动中的所有开关打开来在多相逆变器处施加开路响应。 相反，当估计的角速度大于转换角速度阈值时，可以通过控制多相逆变器驱动中的选定开关来连接多相逆变器的所有相，从而在多相逆变器上施加短路响应， 单相总线（例如，加总线或负母线）。

公开(公告)号：US08319458B2

公开(公告)日：2012-11-27

申请号：US12817952

申请日：2010-06-17

Applicant: Silva Hiti ,  Steven E. Schulz ,  Konstantin S. Majarov ,  Brian A. Welchko

Inventor： Silva Hiti ,  Steven E. Schulz ,  Konstantin S. Majarov ,  Brian A. Welchko

IPC: H02P3/22

CPC classification number: B60L11/14 ,  B60L3/0061 ,  B60L7/14 ,  B60L15/2009 ,  B60L2210/10 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2240/423 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: Methods and systems for operating an inverter coupled to an electric motor are provided. The inverter has a plurality of high switches and a plurality of low switches coupled to the electric motor. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated. In the second mode of operation, each of the plurality of low switches is activated and each of the plurality of high switches is deactivated.

Abstract translation: 提供了用于操作耦合到电动机的逆变器的方法和系统。 逆变器具有耦合到电动机的多个高开关和多个低开关。 检测到表示电动机减速的事件。 逆变器在电动机的减速期间在第一操作模式和第二操作模式之间交替。 在第一操作模式中，多个高开关中的每一个被激活，并且多个低开关中的每一个被去激活。 在第二操作模式中，多个低开关中的每一个被激活，并且多个高开关中的每一个被去激活。

公开(公告)号：US08269434B2

公开(公告)日：2012-09-18

申请号：US12473933

申请日：2009-05-28

Applicant: Brian A. Welchko ,  Jeremy B. Campbell

Inventor： Brian A. Welchko ,  Jeremy B. Campbell

IPC: H02P1/00

CPC classification number: B60L15/02 ,  B60K1/00 ,  B60L11/1803 ,  B60L2210/46 ,  B60L2220/12 ,  B60L2220/58 ,  H02K3/28 ,  H02K11/33 ,  H02M7/5387 ,  H02M7/53871 ,  H02P5/74 ,  H02P25/22 ,  H02P27/08 ,  Y02T10/641 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7241 ,  Y10T29/49002

Abstract: An automotive drive system and methods for making the same are provided. The system includes a three-phase motor and an inverter module. The three-phase motor includes a first set of windings each having a first magnetic polarity; and a second set of windings each having a second magnetic polarity that is opposite the first magnetic polarity. The first set of windings being electrically isolated from the second set of windings. The inverter module includes a first set of phase legs and a second set of phase legs. Each one of the first set of phase legs is coupled to a corresponding phase of the first set of windings, and each one of the second set of phase legs is coupled to a corresponding phase of the second set of windings.

Abstract translation: 提供了一种汽车驱动系统及其制造方法。 该系统包括三相电机和逆变器模块。 三相电动机包括：第一组绕组，每个绕组具有第一磁极性; 以及第二组绕组，每个绕组具有与第一磁极性相反的第二磁极性。 第一组绕组与第二组绕组电隔离。 逆变器模块包括第一组相位支路和第二组相位支路。 第一组相位腿中的每一个耦合到第一组绕组的对应相位，并且第二组相位腿中的每一个耦合到第二组绕组的相应相位。

公开(公告)号：US20110231040A1

公开(公告)日：2011-09-22

申请号：US12725543

申请日：2010-03-17

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

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

IPC: G06F19/00

CPC classification number: B60L15/2009 ,  B60L15/08 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275

Abstract: 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.

Abstract translation: 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：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：US07679310B2

公开(公告)日：2010-03-16

申请号：US11923293

申请日：2007-10-24

Applicant: Steven E. Schulz ,  Brian A. Welchko ,  Silva Hiti

Inventor： Steven E. Schulz ,  Brian A. Welchko ,  Silva Hiti

IPC: H02P23/00

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US20080303475A1

公开(公告)日：2008-12-11

申请号：US11759266

申请日：2007-06-07

Applicant: Nitinkumar R. Patel ,  Brian A. Welchko ,  Bonho Bae ,  Steven E. Schulz

Inventor： Nitinkumar R. Patel ,  Brian A. Welchko ,  Bonho Bae ,  Steven E. Schulz

IPC: G05B19/042 ,  G05D23/19

CPC classification number: H02P21/141 ,  H02P21/20

Abstract: Methods and systems are provided for controlling permanent magnet machines. The method includes determining a maximum torque of the PM machine based on an error between a commanded d-axis flux and an estimated d-axis flux of the PM machine, and adjusting a torque command based on the maximum torque. The error associated with a variation between a current temperature and a nominal temperature of the PM machine.

Abstract translation: 提供用于控制永磁机的方法和系统。 该方法包括基于指令的d轴磁通与PM机的估计d轴磁通之间的误差来确定PM机的最大转矩，以及基于最大转矩来调整转矩指令。 与PM机的当前温度和标称温度之间的变化相关的误差。

公开(公告)号：US20080298785A1

公开(公告)日：2008-12-04

申请号：US11756349

申请日：2007-05-31

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

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

IPC: H02P7/285

CPC classification number: H02P27/08 ,  B60L2270/142 ,  H02M1/14 ,  Y02T10/642

Abstract: 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.

Abstract translation: 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

Applicant: Silva Hiti ,  Steven E. Schulz ,  Brian A. Welchko

Inventor： Silva Hiti ,  Steven E. Schulz ,  Brian A. Welchko

IPC: H02P27/04

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

Abstract: 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.

Abstract translation: 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。