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27 条记录 (耗时 0.018 秒)

    Method and apparatus for detecting AFE filter capacitor degradation
    22.
    发明授权
    Method and apparatus for detecting AFE filter capacitor degradation 有权
    用于检测AFE滤波电容器劣化的方法和装置

    公开(公告)号：US09294005B2

    公开(公告)日：2016-03-22

    申请号：US14042753

    申请日：2013-10-01

    申请人： Rangarajan Tallam ,  Russel Kerkman

    发明人： Rangarajan Tallam ,  Russel Kerkman

    IPC分类号： H02M5/45 ,  H02M7/12 ,  G01R31/02 ,  H02M5/452 ,  H02M5/458 ,  G01R31/42

    CPC分类号： H02M7/125 ,  G01R31/028 ,  G01R31/42 ,  H02M1/126 ,  H02M5/452 ,  H02M5/4585

    摘要： Methods and systems are disclosed for detecting capacitor degradation in an input filter of an active front end power conversion system in which voltage and current sensing is performed to determine sequence component impedance asymmetry to detect filter capacitor degradation according to the value of an off-axis admittance matrix component for Delta or Y-connected filter capacitor banks without sensitivity to voltage unbalance, and with the capability to identify particular degraded capacitor locations based on individual impedance values.

    摘要翻译： 公开了用于检测有源前端功率转换系统的输入滤波器中的电容器劣化的方法和系统，其中执行电压和电流感测以确定顺序分量阻抗不对称性，以根据离轴导纳的值来检测滤波电容器劣化 用于Delta或Y连接的滤波电容器组的矩阵分量，不对电压不平衡敏感，并且具有基于各个阻抗值识别特定劣化电容器位置的能力。

    Frequency converter voltage pulse shaping device and method
    23.
    发明授权
    Frequency converter voltage pulse shaping device and method 有权
    变频器电压脉冲整形装置及方法

    公开(公告)号：US08228698B2

    公开(公告)日：2012-07-24

    申请号：US12153860

    申请日：2008-05-27

    申请人： Hannu Sarén ,  Kimmo Rauma ,  Juha-Pekka Ström ,  Magnus Hortans

    发明人： Hannu Sarén ,  Kimmo Rauma ,  Juha-Pekka Ström ,  Magnus Hortans

    IPC分类号： H02M5/452 ,  H02M1/12

    CPC分类号： H02M7/53873 ,  H02M1/126 ,  H02M1/32

    摘要： The shape of the rising and falling edges of AC output voltage pulses of a PWM frequency converter is controlled by reducing a speed of change, and a height, of the AC output voltage pulse. The PWM frequency converter rectifies the alternating voltage of a supply network into a DC voltage which is filtered. A load bridge having power semiconductor phase switches forms an AC output voltage from the DC voltage for controlling the load. An average speed of voltage change of AC output voltage pulses is set using a phase switch to control at least one power component to be conductive and non-conductive in turn for a period of at least about one microsecond to change a pulse edge of the AC output voltage pulses into at least one micropulse, the width of which is controlled to increase towards a final state of the phase switch.

    摘要翻译： 通过降低交流输出电压脉冲的变化速度和高度来控制PWM变频器的交流输出电压脉冲的上升沿和下降沿的形状。 PWM变频器将供电网络的交流电压整流为经过滤波的直流电压。 具有功率半导体相位开关的负载桥由用于控制负载的DC电压形成AC输出电压。 交流输出电压脉冲的平均电压变化速度通过相位开关来设定，以将至少一个功率分量依次控制为导通和不导通至少约一微秒的周期，以改变AC的脉冲边缘 输出电压脉冲进入至少一个微脉冲，其宽度被控制以朝向相位开关的最终状态增加。

    INVERTER GENERATOR
    25.
    发明申请
    INVERTER GENERATOR 有权
    逆变器发电机

    公开(公告)号：US20100019740A1

    公开(公告)日：2010-01-28

    申请号：US12504457

    申请日：2009-07-16

    申请人： Shoji HASHIMOTO ,  Kazufumi Muronoi

    发明人： Shoji HASHIMOTO ,  Kazufumi Muronoi

    IPC分类号： H02K11/00 ,  G06F19/00 ,  H02M5/452

    CPC分类号： H02M7/53873 ,  H02M5/4585 ,  H02P9/48 ,  H02P27/08 ,  H02P29/50 ,  H02P2101/45

    摘要： In an inverter generator having an engine generator unit generating alternating current, a converter converting the alternating current to direct current, an inverter that converts the direct current to alternating current, an inverter driver that drives switching elements with a PWM signal generated using a reference sine wave of a desired output voltage waveform and a carrier and makes the alternating current to the alternating current of a predetermined frequency, the alternating current supplied to an electrical load is detected, gains Gn (n: 2, 3, 4, 5, 6, . . . m) of n-th harmonics of the reference sine wave and amplitudes An are calculated from the detected current, and the reference sine wave is corrected by a sum obtained by the calculated gains and amplitudes. With this, the reference sine wave is accurately corrected to reliably remove harmonic distortion components from the output voltage waveform.

    摘要翻译： 在具有产生交流电的发动机发电机单元的逆变器发电机中，将交流电转换为直流电的转换器，将直流转换为交流电的逆变器，使用参考正弦产生的PWM信号驱动开关元件的逆变器驱动器 所需输出电压波形和载波的波形，并使交流电流达到预定频率的交流电流，检测提供给电负载的交流电流，增益Gn（n：2,3,4,5,6， 根据检测到的电流计算参考正弦波和幅度An的n次谐波的... m），并且通过计算的增益和幅度获得的和来校正参考正弦波。 由此，精确地校正参考正弦波，以便可靠地从输出电压波形中去除谐波失真分量。

    Circuit, Shrink Fixing and Regulation Method
    26.
    发明申请
    Circuit, Shrink Fixing and Regulation Method 有权
    电路，收缩固定和调节方法

    公开(公告)号：US20080219034A1

    公开(公告)日：2008-09-11

    申请号：US12065248

    申请日：2006-08-28

    申请人： Franz Haimer ,  Jiri Fort

    发明人： Franz Haimer ,  Jiri Fort

    IPC分类号： H02M5/452 ,  H02M5/451

    CPC分类号： H05B6/14 ,  H05B6/06

    摘要： A circuit 1 for controlling the supply of electrical power to an induction coil 2, in particular to an induction coil 2 for heating a shrink attachment for tools, comprises a rectifier 3, having an input 3a, 3b, 3c for feeding an input power, and a rectifier output.The circuit 1 furthermore comprises an inverter 5 for putting out an AC-voltage, having an input and an inverter output 5a, 5b for connecting the induction coil 2, an intermediary circuit 4 for connecting the rectifier 3 with the inverter 5, and a regulation unit for regulating the power supplied to the induction coil 2. A measurement apparatus 6 for measuring a voltage A2 as an input variable for the regulation unit is connected to the output side of the inverter 5. A respective method for regulating the power supplied to the induction coil 2 comprises a regulation step, in which the current A2 supplied to the induction coil 2 is used as an input variable for the regulation of the power supplied to the induction coil 2.

    摘要翻译： 用于控制向感应线圈2，特别是用于加热用于工具的收缩附件的感应线圈2的电力供应的电路1包括整流器3，具有用于馈送的输入3a，3b，3c的整流器3， 输入电源和整流器输出。 电路1还包括用于输出具有输入的AC电压的逆变器5和用于连接感应线圈2的逆变器输出5a，5b，用于连接整流器3与逆变器5的中间电路4，以及 用于调节供应到感应线圈2的功率的调节单元。用于测量作为调节单元的输入变量的电压A 2 2的测量装置6连接到逆变器5的输出侧。 用于调节提供给感应线圈2的功率的各自的方法包括调节步骤，其中提供给感应线圈2的电流A 2 2被用作用于调节供电的输入变量 到感应线圈2。