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129 条记录 (耗时 0.017 秒)

    Method and apparatus for controlling a stand-alone 4-leg voltage source inverter
    2.
    发明授权
    Method and apparatus for controlling a stand-alone 4-leg voltage source inverter 有权
    用于控制独立的4脚电压源逆变器的方法和装置

    公开(公告)号：US06924993B2

    公开(公告)日：2005-08-02

    申请号：US10669919

    申请日：2003-09-24

    申请人： Constantin C. Stancu ,  Silva Hiti

    发明人： Constantin C. Stancu ,  Silva Hiti

    IPC分类号： H02M1/12 ,  H02M7/5387

    CPC分类号： H02M7/53875 ,  H02M2007/53876 ,  Y10S323/908

    摘要： Methods and apparatus are provided for controlling a stand-alone four-leg three-phase inverter. The inverter three-phase output is converted from AC domain elements to corresponding DC domain elements. The DC domain elements are processed into combined regulating and imbalance compensating signals, including over-current limiting. The compensating signals are restored to corresponding AC domain signals, and are processed into control inputs for the inverter, in order to stabilize the inverter output when connected to an unbalanced load. The inverter controller can be implemented entirely in software as a control algorithm.

    摘要翻译： 提供了用于控制独立的四脚三相逆变器的方法和装置。 逆变器三相输出从AC域元件转换为相应的DC域元件。 DC域元件被处理成组合的调节和不平衡补偿信号，包括过流限制。 补偿信号恢复到对应的交流域信号，并被处理为逆变器的控制输入，以便在连接到不平衡负载时稳定逆变器输出。 逆变器控制器可以完全以软件实现为控制算法。

    Controlling electric vehicle DC bus voltage ripple under step mode of operation
    3.
    发明授权
    Controlling electric vehicle DC bus voltage ripple under step mode of operation 有权
    在步进运行模式下控制电动汽车直流母线电压纹波

    公开(公告)号：US06362585B1

    公开(公告)日：2002-03-26

    申请号：US09584799

    申请日：2000-05-30

    申请人： Silva Hiti ,  Brendan Matthew Conlon ,  Constantin C. Stancu

    发明人： Silva Hiti ,  Brendan Matthew Conlon ,  Constantin C. Stancu

    IPC分类号： H02P600

    CPC分类号： B60L11/1803 ,  B60L15/04 ,  Y02T10/645 ,  Y02T10/7005

    摘要： A control system and method for controlling an inverter used in an electric vehicle. The control system and method measures an average DC bus voltage and compares it to low voltage and high voltage thresholds defining predetermined conditions. If the voltage conditions are satisfied, the six-step mode is enabled based upon an applied torque command. Thus, if the torque command is higher than a high torque threshold, the six-step mode indefinitely enabled, and if the torque command is below the high torque threshold, the six-step mode is enabled for a limited time duration, and then disabled.

    摘要翻译： 一种用于控制在电动车辆中使用的逆变器的控制系统和方法。 控制系统和方法测量平均直流母线电压，并将其与定义预定条件的低电压和高电压阈值进行比较。 如果满足电压条件，则基于施加的转矩指令启用六步模式。 因此，如果转矩指令高于高转矩阈值，则六步模式无限启动，如果转矩指令低于高转矩阈值，六步模式将在有限的持续时间内使能，然后禁用 。

    Methods and apparatus for current control of a three-phase voltage source inverter in the overmodulation region
    5.
    发明授权
    Methods and apparatus for current control of a three-phase voltage source inverter in the overmodulation region 有权
    过调制区域三相电压源逆变器电流控制方法及装置

    公开(公告)号：US06984960B2

    公开(公告)日：2006-01-10

    申请号：US10634528

    申请日：2003-08-05

    申请人： Constantin C. Stancu ,  Silva Hiti

    发明人： Constantin C. Stancu ,  Silva Hiti

    IPC分类号： H02P5/34 ,  H02P7/42 ,  G05B11/01

    CPC分类号： H02M1/12 ,  H02M7/53873 ,  H02M2007/53876 ,  H02P21/0089 ,  H02P21/50 ,  H02P29/50

    摘要： A drive system that is suitable for high bandwidth current control of a three-phase voltage source inverter in the overmodulation region includes a feedback path that has a harmonic decoupling block that subtracts selected harmonic components from signals representative of a corresponding motor phase current signal. The harmonic decoupling block thereby generates corrected feedback signals. The drive system also includes subtractor blocks that subtract the corrected feedback signals from signals representative of open-loop magnetizing reference currents to generate difference signals. Also included is a modulation block that utilizes the difference signals to produce signals to drive a three-phase voltage source inverter in an overmodulated six-step mode.

    摘要翻译： 适用于过调制区域中三相电压源逆变器的高带宽电流控制的驱动系统包括具有谐波去耦块的反馈路径，该谐波去耦块从代表对应的电动机相电流信号的信号中减去所选谐波分量。 因此，谐波去耦块产生校正的反馈信号。 驱动系统还包括从代表开环磁化参考电流的信号中减去经校正的反馈信号以产生差分信号的减法器块。 还包括利用差分信号产生信号以以过调制的六步模式驱动三相电压源逆变器的调制块。

    Method of controlling a voltage-fed induction machine
    6.
    发明授权
    Method of controlling a voltage-fed induction machine 有权
    控制电压感应电机的方法

    公开(公告)号：US06222335B1

    公开(公告)日：2001-04-24

    申请号：US09492662

    申请日：2000-01-27

    申请人： Silva Hiti ,  Constantin C. Stancu

    发明人： Silva Hiti ,  Constantin C. Stancu

    IPC分类号： H02P700

    CPC分类号： B60L15/2045 ,  B60L11/1803 ,  B60L15/025 ,  B60L2220/12 ,  H02P21/22 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7283

    摘要： A control algorithm or method for use in controlling a voltage-fed induction machine. The control algorithm includes the following steps. The DC link voltage supplied to an inverter driving the induction machine is monitored. When the DC link voltage is high enough, the algorithm controls the amount of current supplied to the induction machine to provide current controlled operation of the induction machine. When the DC link voltage is not high enough to control the current under transient conditions, the induction machine is controlled by imposing the maximum possible phase voltage and optimal slip angle on the machine to provide maximal torque per ampere operation of the induction machine. The maximal torque per ampere operation is performed when either of the following conditions is met: a) the torque level required by the induction machine is such that efficiency optimization cannot be performed, or b) current regulators approach saturation. The current controlled operation is performed when a) the torque level required by the induction machine is at a level that allows efficiency optimization, and b) the current regulators are not near saturation. The efficiency optimization in the current controlled mode is performed by using a single constant over the whole operating range.

    摘要翻译： 一种用于控制电压感应电机的控制算法或方法。 控制算法包括以下步骤。 监控提供给驱动感应电机的变频器的直流母线电压。 当DC链路电压足够高时，算法控制提供给感应电机的电流量，以提供感应电机的电流控制操作。 当直流母线电压不足以在瞬态条件下控制电流时，通过在机器上施加最大可能的相电压和最佳滑移角来控制感应电机，以提供感应电机的每安培运行的最大扭矩。 当满足以下任一条件时，执行每安培运行的最大扭矩：a）感应电机所需的转矩水平使得不能执行效率优化，或b）电流调节器接近饱和。 当a）感应电机所需的转矩水平处于允许效率优化的水平，以及b）电流调节器不接近饱和时，执行电流控制操作。 通过在整个工作范围内使用单个常数来执行电流控制模式下的效率优化。

    Redundant DC bus discharge for an electric motor system
    7.
    发明授权
    Redundant DC bus discharge for an electric motor system 有权
    用于电动机系统的冗余直流母线放电

    公开(公告)号：US07944160B2

    公开(公告)日：2011-05-17

    申请号：US12047120

    申请日：2008-03-12

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

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

    IPC分类号： H02P21/00

    CPC分类号： H02P21/0003 ,  H02M2001/322

    摘要： Methods and apparatus are provided for discharging a direct current (DC) bus providing power to a motor control circuit in an electric motor system. The method includes the steps of detecting a predetermined discharge signal and generating operational control signals comprising phase currents for dissipating energy from the DC bus through a passive load in response to detecting the predetermined discharge signal, wherein the passive load includes motor windings of an electric motor of the electric motor system. The method also includes the step of providing the operational control signals to the motor control circuit for discharging the DC bus through the motor control circuit and the motor windings of the electric motor.

    摘要翻译： 提供了用于对在电动机系统中的电动机控制电路供电的直流（DC）总线的放电的方法和装置。 该方法包括以下步骤：响应于检测到预定的放电信号，产生包括用于从DC总线通过无源负载消耗能量的相电流的操作控制信号，其中被动负载包括电动机的电动机绕组 的电机系统。 该方法还包括向电动机控制电路提供操作控制信号以通过电动机控制电路和电动机的电动机绕组排放DC总线的步骤。

    System and method for controlling a surface-mounted permanent magnet synchronous machine drive over a wide speed range using a reference voltage
    9.
    发明授权
    System and method for controlling a surface-mounted permanent magnet synchronous machine drive over a wide speed range using a reference voltage 有权
    使用参考电压在宽速度范围内控制表面安装的永磁同步电机驱动的系统和方法

    公开(公告)号：US06288515B1

    公开(公告)日：2001-09-11

    申请号：US09552426

    申请日：2000-04-19

    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： H02P528

    CPC分类号： H02P6/085 ,  H02P21/08

    摘要： A surface-mounted permanent magnet synchronous machine drive and a method of controlling the machine drive. Flux weakening and current regulating loops cooperate to provide automatic transition to the flux weakening mode (operation above base speed), regardless of DC bus voltage, load or other operating conditions. The modulation index (d) is used as a condition for automatic start of flux weakening operation is very useful because this point can be easily changed by software when necessary, regardless of the value of DC bus voltage. 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).

    摘要翻译： 一种表面安装的永磁同步电机驱动器和一种控制机器驱动的方法。 磁通弱化和电流调节回路协作，以提供自由过渡到磁通弱化模式（高于基本速度的运行），而不管直流母线电压，负载或其他工作条件如何。 使用调制指数（d）作为自动启动磁通弱化操作的条件是非常有用的，因为无论DC总线电压值如何，该点在必要时可以通过软件容易地改变。 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）。

    DC bus discharge in an electric motor system
    10.
    发明授权
    DC bus discharge in an electric motor system 有权
    直流母线放电在电动马达系统中

    公开(公告)号：US07944161B2

    公开(公告)日：2011-05-17

    申请号：US12047123

    申请日：2008-03-12

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

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

    IPC分类号： H02P21/00

    CPC分类号： H02P27/06 ,  H02P3/22 ,  H02P23/10

    摘要： 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.

    摘要翻译： 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 。