公开(公告)号：US20080272731A1

公开(公告)日：2008-11-06

申请号：US11743709

申请日：2007-05-03

Applicant: Steven E. Schulz ,  Sean E. Gleason ,  Brian A. Welchko

Inventor： Steven E. Schulz ,  Sean E. Gleason ,  Brian A. Welchko

IPC: H02P27/04 ,  G05B1/06 ,  G05B11/42

CPC classification number: H02P21/06 ,  H02P21/14 ,  H02P2203/05

Abstract: Methods and systems are provided for aligning a resolver in an electric motor system. The method includes commanding a d-axis current command and a speed command, operating an electric motor without a load in response to the d-axis current command and the speed command, determining a rotor speed in response to the speed command, and determining an offset of the resolver based on the speed command and the rotor speed when the rotor speed has substantially stabilized.

Abstract translation: 提供了用于对准电动机系统中的旋转变压器的方法和系统。 该方法包括：命令d轴电流指令和速度指令，响应于d轴电流指令和速度指令，无负载地操作电动机，响应速度指令确定转子速度，并且确定 当转子速度基本上稳定时，基于速度指令和转子速度的旋转变压器的偏移。

公开(公告)号：US08319460B2

公开(公告)日：2012-11-27

申请号：US12606839

申请日：2009-10-27

Applicant: Yo Chan Son ,  Jihoon Jang ,  Brian A. Welchko ,  Nitinkumar R. Patel ,  Steven E. Schulz

Inventor： Yo Chan Son ,  Jihoon Jang ,  Brian A. Welchko ,  Nitinkumar R. Patel ,  Steven E. Schulz

IPC: H02P6/04

CPC classification number: H02P6/20

Abstract: Methods and systems for controlling an electric motor are provided. The motor includes a plurality of windings. Each winding is coupled to a respective set of first and second switches. The first switch of each set of switches is simultaneously activated. Current flow through the plurality of windings is measured while the first switch of each set of switches is activated. The electric motor is controlled according to a first motor control method if the measured current is below a predetermined threshold. The electric motor is controlled according to a second motor control method if the measured current is above the predetermined threshold.

Abstract translation: 提供了用于控制电动机的方法和系统。 马达包括多个绕组。 每个绕组耦合到相应的一组第一和第二开关。 每组开关的第一个开关同时被激活。 当每组开关的第一开关被激活时，测量通过多个绕组的电流。 如果测量电流低于预定阈值，则根据第一电动机控制方法来控制电动机。 如果测量的电流高于预定阈值，则根据第二电动机控制方法来控制电动机。

公开(公告)号：US08278933B2

公开(公告)日：2012-10-02

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: G01R31/00

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：US20110309779A1

公开(公告)日：2011-12-22

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: H02P6/00

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：US20110309777A1

公开(公告)日：2011-12-22

申请号：US12817950

申请日：2010-06-17

Applicant: Brian A. Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

Inventor： Brian A. Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

IPC: H02P3/14

CPC classification number: B60L7/06 ,  B60L3/04 ,  B60L7/003 ,  B60L7/08 ,  Y02T10/7258

Abstract: Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. 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 or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.

Abstract translation: 提供了用于操作具有多个高开关的逆变器和耦合到电动机的多个低开关的方法和系统。 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，或者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。 在第二操作模式中，多个高开关中的每一个被去激活，并且多个低开关中的每一个被去激活。

公开(公告)号：US08058830B2

公开(公告)日：2011-11-15

申请号：US12136636

申请日：2008-06-10

Applicant: George John ,  Sibaprasad Chakrabarti ,  Brian A. Welchko ,  Gregory S. Smith ,  James M. Nagashima ,  Milun Perisic

Inventor： George John ,  Sibaprasad Chakrabarti ,  Brian A. Welchko ,  Gregory S. Smith ,  James M. Nagashima ,  Milun Perisic

IPC: H02P1/00

CPC classification number: B60L11/1868 ,  Y02T10/7005 ,  Y02T10/7066

Abstract: Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide traction power to the vehicle. A first inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A first energy source is coupled to the first inverter, wherein the first inverter is configured to provide power flow between the first energy source and the electric motor. A second inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A rectifier is coupled to the second inverter and configured to produce a direct current output. The second inverter is configured to provide power from the rectifier to the electric motor.

Abstract translation: 提供了系统和方法，用于使用双端逆变器系统对整流器充电能量源。 一种用于车辆的电驱动系统的装置。 电驱动系统包括被配置为向车辆提供牵引力的电动马达。 第一逆变器耦合到电动机并且被配置为向电动机提供交流电。 第一能量源耦合到第一逆变器，其中第一逆变器被配置为在第一能量源和电动机之间提供功率流。 第二逆变器耦合到电动机并且被配置为向电动机提供交流电。 整流器耦合到第二反相器并且被配置为产生直流输出。 第二逆变器被配置成从整流器向电动机提供电力。

公开(公告)号：US08054660B2

公开(公告)日：2011-11-08

申请号：US12123300

申请日：2008-05-19

Applicant: Brian A. Welchko

Inventor： Brian A. Welchko

IPC: H02M7/537

CPC classification number: H02M7/003 ,  H05K7/1432

Abstract: Systems and apparatus are provided for an inverter module for use in a vehicle. The inverter module comprises a first electrical base and a second electrical base each having an electrically conductive mounting surface, wherein the electrical bases are physically distinct and electrically coupled. A first semiconductor switch has a surface terminal that is coupled to the electrically conductive mounting surface of the first electrical base. A second semiconductor switch has a surface terminal that is coupled to the electrically conductive mounting surface of the first electrical base. A first semiconductor diode and a second semiconductor diode each have a surface terminal, the surface terminals are coupled to the electrically conductive mounting surface of the second electrical base. The first semiconductor switch and first semiconductor diode are antiparallel, and the second semiconductor switch and second semiconductor diode are antiparallel.

Abstract translation: 提供了用于车辆中的逆变器模块的系统和装置。 逆变器模块包括第一电气基座和每个具有导电安装表面的第二电气基座，其中电气基座在物理上是不同的并且电耦合。 第一半导体开关具有耦合到第一电气基座的导电安装表面的表面端子。 第二半导体开关具有耦合到第一电气基座的导电安装表面的表面端子。 第一半导体二极管和第二半导体二极管各自具有表面端子，表面端子耦合到第二电气基座的导电安装表面。 第一半导体开关和第一半导体二极管是反平行的，并且第二半导体开关和第二半导体二极管是反平行的。

公开(公告)号：US07652443B2

公开(公告)日：2010-01-26

申请号：US11923270

申请日：2007-10-24

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

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

IPC: H02P7/00

CPC classification number: B60L15/08 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/526 ,  B60L2270/14 ,  Y02T10/645

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 a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the 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低于第一转矩水平来控制功率逆变器，控制功率逆变器将功率逆变器的开关频率设定在第一设定频率; 并且响应于所述电动机的所述指令转矩在所述第一转矩水平和第二转矩水平之间，控制所述电力逆变器，以根据所述电动机的指令转矩来确定所述电力逆变器的开关频率，同时保持 开关频率高于动态频率限制。 该方法以较高的指令转矩降低变频器的开关频率，同时保持开关频率高于动态频率限制，从而提供对电机的有效控制。

公开(公告)号：US20090115491A1

公开(公告)日：2009-05-07

申请号：US12255728

申请日：2008-10-22

Applicant: Mohammad N. Anwar ,  Prakash Haribhai Desai ,  Sean E. Gleason ,  Brian A. Welchko

Inventor： Mohammad N. Anwar ,  Prakash Haribhai Desai ,  Sean E. Gleason ,  Brian A. Welchko

IPC: H03K17/78 ,  H05K7/20

CPC classification number: B60L3/12 ,  B60W30/1843 ,  B60W30/1846

Abstract: A hybrid powertrain system includes an engine, an electric machine, a power electronics device including a plurality of electric circuit layers, and a cooling system. A method for managing thermal energy in the power electronics device includes monitoring a plurality of temperature sensors in the power electronics device, monitoring electric power into and out of the power electronics device, predicting temperatures for the plurality of electric circuit layers, and controlling the hybrid powertrain system based upon the predicted temperatures for the plurality of electric circuit layers.

Abstract translation: 混合动力系统包括发动机，电机，包括多个电路层的电力电子设备和冷却系统。 一种用于管理电力电子设备中的热能的方法包括：监测电力电子设备中的多个温度传感器，监测电力进入和流出电力电子设备，预测多个电路层的温度，以及控制混合 基于多个电路层的预测温度的动力系统。

公开(公告)号：US20090001915A1

公开(公告)日：2009-01-01

申请号：US11769856

申请日：2007-06-28

Applicant: Brian A. Welchko ,  Keith A. Rodman

Inventor： Brian A. Welchko ,  Keith A. Rodman

IPC: H02P27/06 ,  H02H7/122

CPC classification number: H02P27/06

Abstract: Methods and apparatus are provided for dynamic voltage control of electric motors. An inverter provides an output voltage to an electric motor based on a gate voltage. The method includes determining a speed of the electric motor and modifying the gate voltage based on the speed of the electric motor. The apparatus includes a gate drive circuit and a controller coupled to the gate drive circuit. The gate drive circuit provides a gate voltage to a switch network, and the switch network produces the output voltage in response to the gate voltage. The controller modifies the gate voltage based on a speed of the electric motor.

Abstract translation: 提供了用于电动机的动态电压控制的方法和装置。 逆变器基于栅极电压向电动机提供输出电压。 该方法包括确定电动机的速度并基于电动机的速度来改变门电压。 该装置包括栅极驱动电路和耦合到栅极驱动电路的控制器。 栅极驱动电路向开关网络提供栅极电压，并且开关网络响应于栅极电压产生输出电压。 控制器基于电动机的速度修改栅极电压。