公开(公告)号：US20110202226A1

公开(公告)日：2011-08-18

申请号：US12704659

申请日：2010-02-12

Applicant: Brian A. Welchko ,  Abbas Raftari ,  Silva Hiti ,  Jeong J. Park ,  Hanne Buur ,  Wei D. Wang ,  William R. Cawthorne

Inventor： Brian A. Welchko ,  Abbas Raftari ,  Silva Hiti ,  Jeong J. Park ,  Hanne Buur ,  Wei D. Wang ,  William R. Cawthorne

IPC: G01M17/00

CPC classification number: B60L15/025 ,  B60K6/46 ,  B60K6/48 ,  B60L3/0038 ,  B60L11/14 ,  B60L15/20 ,  B60L2220/14 ,  B60L2240/36 ,  B60W50/045 ,  B60W2050/0039 ,  B60W2510/087 ,  Y02T10/6217 ,  Y02T10/6221 ,  Y02T10/643 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/72 ,  Y02T10/7275

Abstract: Methods and systems are provided for monitoring an electrical system of a vehicle. Data pertaining to the electrical system is obtained. Calculation modules are performed using the data to generate intermediate determinations. An aggregate calculation module is performed using each of the intermediate determinations to generate an aggregate determination pertaining to the electrical system. Redundant intermediate calculations are performed using the data to generate redundant intermediate determinations. Each of the redundant intermediate determinations is used for comparison with a respective intermediate determination.

Abstract translation: 提供了用于监测车辆的电气系统的方法和系统。 获得与电气系统有关的数据。 使用数据执行计算模块以产生中间确定。 使用每个中间确定来执行聚合计算模块，以生成关于电气系统的聚合确定。 使用数据执行冗余中间计算，以生成冗余中间确定。 每个冗余中间确定用于与相应的中间确定进行比较。

公开(公告)号：US07944161B2

公开(公告)日：2011-05-17

申请号：US12047123

申请日：2008-03-12

Applicant: Silva Hiti ,  David Tang ,  Brian A. Welchko ,  Milun Perisic ,  Constantin C. Stancu

Inventor： Silva Hiti ,  David Tang ,  Brian A. Welchko ,  Milun Perisic ,  Constantin C. Stancu

IPC: H02P21/00

CPC classification number: H02P27/06 ,  H02P3/22 ,  H02P23/10

Abstract: Methods and apparatus are provided for improved discharge of a DC bus which provides power to an inverter. An electric motor system provided with the improved discharge method for discharge of the DC bus includes an electric motor, the inverter which provides electric control for the permanent magnet electric motor, the direct current (DC) bus which provides power to the inverter, and a processor. The processor generates operational control signals and provides such operational control signals to the inverter. In response to detecting a predetermined discharge signal, the processor generates operational control signals for generating a ripple current in motor windings of the electric motor to dissipate energy from the DC bus through a passive load, the passive load including the motor windings of the electric motor.

Abstract translation: 提供了用于改进向逆变器提供电力的DC总线的放电的方法和装置。 具有改善的用于排放DC总线的放电方法的电动机系统包括电动机，为永磁电动机提供电力控制的逆变器，向逆变器供电的直流（DC）总线，以及 处理器。 处理器产生操作控制信号，并向变频器提供这种操作控制信号。 响应于检测到预定的放电信号，处理器产生用于在电动机的电动机绕组中产生纹波电流的操作控制信号，以通过无源负载从DC总线耗散能量，包括电动机的电动机绕组的被动负载 。

公开(公告)号：US20110068727A1

公开(公告)日：2011-03-24

申请号：US12565982

申请日：2009-09-24

Applicant: Brian A. WELCHKO ,  Silva HITI ,  Abbas RAFTARI ,  Jeong J. PARK ,  Hanne BUUR

Inventor： Brian A. WELCHKO ,  Silva HITI ,  Abbas RAFTARI ,  Jeong J. PARK ,  Hanne BUUR

IPC: H02H7/09

CPC classification number: H02P29/02 ,  G05B23/0235

Abstract: Methods and systems are provided for monitoring an automotive electrical system including an inverter having at least one switch. First and second voltage commands corresponding to respective first and second components of a commanded voltage vector on a synchronous frame of reference coordinate system are received. A plurality of duty cycles for operating the at least one switch are calculated based on the first and second voltage commands. First and second actual voltages are calculated based on the plurality of duty cycles. The first and second actual voltages correspond to respective first and second components of an actual voltage vector on the synchronous frame of reference coordinate system. An indication of a fault is generated based on the difference between the first components of the commanded voltage vector and the actual voltage vector and the difference between the second components of the commanded voltage vector and the actual voltage vector.

Abstract translation: 提供了用于监视包括具有至少一个开关的逆变器的汽车电气系统的方法和系统。 接收对应于参考坐标系同步帧上的指令电压矢量的相应第一和第二分量的第一和第二电压指令。 基于第一和第二电压命令来计算用于操作至少一个开关的多个占空比。 基于多个占空比来计算第一和第二实际电压。 第一和第二实际电压对应于参考坐标系同步帧上的实际电压矢量的相应的第一和第二分量。 基于指令电压矢量的第一分量与实际电压矢量之间的差与指令电压矢量的第二分量与实际电压矢量之差，产生故障指示。

公开(公告)号：US07834574B2

公开(公告)日：2010-11-16

申请号：US11944781

申请日：2007-11-26

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

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

IPC: H02P1/32

CPC classification number: G01R19/2509 ,  G01R19/2513 ,  G01R31/007 ,  H02P21/00

Abstract: In various embodiments, a phase current sampling apparatus (300, 600, FIGS. 3, 6), an electric motor drive system (100, FIG. 1), and a motor vehicle (1200, FIG. 12) include switching circuitry adapted to receive first and second phase current waveforms. The switching circuitry provides the first phase current waveform during at least two offset sampling instants, and provides the second phase current waveform during a reference sampling instant. An analog-to-digital converter is adapted to sample the first phase current waveform at the offset sampling instants, and to sample the second phase current waveform at the reference sampling instant. An embodiment of a method for regulating phase current waveforms includes an analog-to-digital converter generating samples of a first phase current waveform at sampling instants that occur before and after a reference sampling instant, and generating a sample of a second phase current waveform at the reference sampling instant.

Abstract translation: 在各种实施例中，相电流采样装置（300,600，图3,6），电动机驱动系统（100，图1）和机动车辆（图12中的1200）包括适于 接收第一和第二相电流波形。 开关电路在至少两个偏移采样时刻提供第一相电流波形，并且在参考采样时刻期间提供第二相电流波形。 模拟 - 数字转换器适于在偏移采样时刻采样第一相电流波形，并在参考采样时刻采样第二相电流波形。 用于调节相电流波形的方法的实施例包括模数转换器，其在采样时刻产生在采样时刻之前和之后的采样时刻产生第一相电流波形的采样，并且产生第二相电流波形的采样 参考采样时刻。

公开(公告)号：US20100202177A1

公开(公告)日：2010-08-12

申请号：US12761197

申请日：2010-04-15

Applicant: LATEEF A. KAJOUKE ,  BRIAN A. WELCHKO

Inventor： LATEEF A. KAJOUKE ,  BRIAN A. WELCHKO

IPC: H02M7/537 ,  G05F1/10

CPC classification number: H02M7/53871 ,  H02M2001/007

Abstract: Systems and methods are disclosed for a DC boost converter. The systems and methods combine operation of an inductor with the input capacitor of a DC/AC inverter via a switch configuration to power the DC/AC inverter. 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.

Abstract translation: 公开了用于DC升压转换器的系统和方法。 该系统和方法通过开关配置将电感器与DC / AC逆变器的输入电容器的操作相结合，为DC / AC逆变器供电。 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：US07756669B2

公开(公告)日：2010-07-13

申请号：US12141653

申请日：2008-06-18

Applicant: Constantin C. Stancu ,  Robert T. Dawsey ,  Brian A. Welchko

Inventor： Constantin C. Stancu ,  Robert T. Dawsey ,  Brian A. Welchko

IPC: G01K1/08 ,  G01N27/416

CPC classification number: G06F17/5036 ,  G06F2217/78

Abstract: Methods and systems are provided for modeling temperature characteristics of components in a system such as a power module for a hybrid or electric vehicle. A power dissipation value is calculated for each of the components in the system. A first filter is applied to the power dissipation value associated with a selected component to determine its estimated temperature. For each of the neighboring components located adjacent to the selected component, a cross-coupling temperature is estimated by applying other filters to each of the power dissipation values for the neighboring components. The estimated temperature of the selected component and the estimated cross-coupling temperatures for each of the neighboring components can then be added to thereby estimate the operating temperature for the selected component. Further, the operation of the system may be adjusted if the operating temperature determined for the selected component exceeds a threshold value.

Abstract translation: 提供了用于对诸如混合动力或电动车辆的功率模块的系统中的部件的温度特性进行建模的方法和系统。 为系统中的每个组件计算功耗值。 将第一滤波器应用于与所选择的分量相关联的功耗值，以确定其估计的温度。 对于与所选择的部件相邻的相邻部件中的每一个，通过对相邻部件的每个功率耗散值应用其它滤波器来估计交叉耦合温度。 然后可以添加所选择的部件的估计温度和每个相邻部件的估计交叉耦合温度，从而估计所选部件的工作温度。 此外，如果为所选择的部件确定的工作温度超过阈值，则可以调整系统的操作。

公开(公告)号：US07755319B2

公开(公告)日：2010-07-13

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。

公开(公告)号：US07723946B2

公开(公告)日：2010-05-25

申请号：US11736687

申请日：2007-04-18

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

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

IPC: H02P27/04

CPC classification number: H02M1/12 ,  H02P27/08 ,  H03K7/04

Abstract: Method and system are provided for controlling an alternating current (AC) motor via an inverter. The method includes selecting a pulse sequencing method based on a modulation index of the inverter, and providing a voltage to the AC motor based on the pulse sequencing method. The system includes an inverter having a modulation index (Mi) and a controller coupled to the inverter. The controller selects a pulse sequencing method based on Mi and produces a signal based on the pulse sequencing method. The inverter includes a switch network producing a voltage in response to the signal, and the voltage drives the AC motor.

Abstract translation: 提供了用于通过逆变器控制交流（AC）电动机的方法和系统。 该方法包括基于逆变器的调制指数选择脉冲排序方法，并且基于脉冲排序方法向交流电动机提供电压。 该系统包括具有调制指数（Mi）的逆变器和耦合到逆变器的控制器。 控制器选择基于Mi的脉冲排序方法，并根据脉冲排序方法产生信号。 逆变器包括响应于信号产生电压的开关网络，并且电压驱动AC电动机。

公开(公告)号：US07714461B2

公开(公告)日：2010-05-11

申请号：US11874066

申请日：2007-10-17

Applicant: Brian A. Welchko

Inventor： Brian A. Welchko

IPC: H02J3/14 ,  H02J3/02

CPC classification number: H02M7/537 ,  Y10T307/32 ,  Y10T307/328 ,  Y10T307/375 ,  Y10T307/461 ,  Y10T307/707

Abstract: Apparatus, systems, and methods for reducing resonance in a multiple inverter system are provided. One apparatus includes an inverter coupled to a decoupling element, wherein the inverter and the decoupling elements are couplable to a power source. A system includes a motor vehicle power source including first positive and negative terminals, and a plurality of inverters coupled to the power source. Each inverter includes a second positive terminal coupled to the first positive terminal and a second negative terminal coupled to the first negative terminal. A first inverter of the plurality of inverters includes a decoupling element coupled between the first positive terminal and the positive terminal of the first inverter. One method includes operating first and second inverters at different frequencies, and controlling the impedance of a decoupling element coupled between a power source and the first inverter based on the second inverter frequency.

Abstract translation: 提供了用于减少多个逆变器系统中的谐振的装置，系统和方法。 一种装置包括耦合到去耦元件的逆变器，其中逆变器和去耦元件可耦合到电源。 一种系统包括包括第一正极端子和负极端子的机动车辆电源以及耦合到电源的多个逆变器。 每个反相器包括耦合到第一正极端子的第二正极端子和耦合到第一负极端子的第二负极端子。 多个逆变器的第一反相器包括耦合在第一反相器的第一正极端子和正极端子之间的去耦元件。 一种方法包括以不同频率操作第一和第二反相器，并且基于第二反相器频率来控制耦合在电源和第一反相器之间的去耦元件的阻抗。

公开(公告)号：US20090319115A1

公开(公告)日：2009-12-24

申请号：US12141653

申请日：2008-06-18

Applicant: Constantin C. STANCU ,  Robert T. DAWSEY ,  Brian A. WELCHKO

Inventor： Constantin C. STANCU ,  Robert T. DAWSEY ,  Brian A. WELCHKO

IPC: G06F17/00 ,  G06F7/60

CPC classification number: G06F17/5036 ,  G06F2217/78

Abstract: Methods and systems are provided for modeling temperature characteristics of components in a system such as a power module for a hybrid or electric vehicle. A power dissipation value is calculated for each of the components in the system. A first filter is applied to the power dissipation value associated with a selected component to determine its estimated temperature. For each of the neighboring components located adjacent to the selected component, a cross-coupling temperature is estimated by applying other filters to each of the power dissipation values for the neighboring components. The estimated temperature of the selected component and the estimated cross-coupling temperatures for each of the neighboring components can then be added to thereby estimate the operating temperature for the selected component. Further, the operation of the system may be adjusted if the operating temperature determined for the selected component exceeds a threshold value.

Abstract translation: 提供了用于对诸如混合动力或电动车辆的功率模块的系统中的部件的温度特性进行建模的方法和系统。 为系统中的每个组件计算功耗值。 将第一滤波器应用于与所选择的分量相关联的功耗值，以确定其估计的温度。 对于与所选择的部件相邻的相邻部件中的每一个，通过对相邻部件的每个功率耗散值应用其它滤波器来估计交叉耦合温度。 然后可以添加所选择的部件的估计温度和每个相邻部件的估计交叉耦合温度，从而估计所选部件的工作温度。 此外，如果为所选择的部件确定的工作温度超过阈值，则可以调整系统的操作。