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504 条记录 (耗时 0.02 秒)

    SPACE VECTOR PULSE WIDTH MODULATION CONTROL OF THREEPHASE MULTI-LEVEL INVERTERS
    2.
    发明公开
    SPACE VECTOR PULSE WIDTH MODULATION CONTROL OF THREEPHASE MULTI-LEVEL INVERTERS 审中-公开

    公开(公告)号：EP4395153A1

    公开(公告)日：2024-07-03

    申请号：EP23212277.0

    申请日：2023-11-27

    申请人： Hamilton Sundstrand Corporation

    发明人： MAIRAL, Palash ,  SENGODAN, Rajkumar

    IPC分类号： H02M7/487 ,  H02M7/5395 ,  H02M7/5387 ,  H02M1/00 ,  H02P27/14

    CPC分类号： H02M7/487 ,  H02M7/5395 ,  H02M7/53873 ,  H02M1/0003 ,  H02P27/14

    摘要： An inverter system (100) includes an inverter having a plurality of switching elements (108) arranged with at least three levels, where the inverter is configured to receive a direct current input and output an alternating current to three phases. The inverter system (100) also includes a controller (130) configured to determine a reference voltage angle based on a first voltage and a second voltage that are orthogonal components of a reference voltage and determine a sector of a space vector map of the reference voltage based on the reference voltage angle. The controller (130) is also configured to determine an active time pair of vector states associated with on-off states of the switching elements (108) to modulate between based on the sector and the reference voltage angle and output a carrier waveform for each of the three phases to control modulation of the switching elements (108) to achieve the reference voltage for the three phases.

    The measuring of earth fault current
    5.
    发明授权
    The measuring of earth fault current 有权

    公开(公告)号：EP2385384B1

    公开(公告)日：2018-08-22

    申请号：EP11162364.1

    申请日：2011-04-14

    申请人： Vacon Oy

    发明人： Doktar, Andreas ,  Strandberg, Stefan

    IPC分类号： G01R31/02 ,  G01R31/42 ,  H02P29/02 ,  H02M7/537 ,  G01R31/00 ,  H02M1/32 ,  H02M7/5387 ,  H02M7/5395 ,  H02M1/00

    CPC分类号： G01R31/00 ,  G01R31/025 ,  G01R31/42 ,  H02M1/32 ,  H02M7/53873 ,  H02M7/5395 ,  H02M2001/0009

    摘要： Method and apparatus for measuring an earth fault current in an output circuit of an inverter (INU) operating on the PWM principle and forming alternating-current voltage from direct-current voltage, the output currents (i U , i V and i W ) of which inverter are measured, and which inverter comprises at least two phase switches implemented with power semiconductor components (V 1 - V 6 , D 1 - D 6 ), which switches, controlled by a control unit, connect their own output phases to a positive (+) pole and to a negative (-) pole of a direct-current voltage source such that the phase switches are repeatedly both in different positions and also in the same positions, wherein the results of current measurement during two opposite switch position combinations are recorded in memory, and the earth fault current is calculated by forming a difference of the measurement results of said combinations.

    POWER CONVERSION DEVICE
    9.
    发明公开
    POWER CONVERSION DEVICE 审中-公开
    电力转换装置

    公开(公告)号：EP3125420A1

    公开(公告)日：2017-02-01

    申请号：EP15767771.7

    申请日：2015-03-27

    申请人： Daikin Industries, Ltd.

    发明人： TANIGUCHI, Tomoisa ,  SEKIMOTO, Morimitsu ,  OGAWA, Takurou ,  TOOYAMA, Eiji ,  HAYASHI, Nobuo

    IPC分类号： H02M7/48 ,  H02P21/00 ,  H02P27/04 ,  H02P27/06

    CPC分类号： H02M5/458 ,  H02M1/10 ,  H02M1/12 ,  H02M1/14 ,  H02M7/4826 ,  H02M7/53873 ,  H02M7/5395 ,  H02M2001/0022 ,  H02M2001/0025 ,  H02P23/26 ,  H02P27/085 ,  H02P29/50 ,  H02P2205/00

    摘要： Disclosed herein is a power conversion device including a storage (62) and a power conversion controller (50, 60). The storage (62) stores multiple values, each correlated to a disturbance that causes distortion in a current (Iin) to a power converter (13), in association with a phase angle (θin) of a voltage (Vin) of an AC power supply (30). The power conversion controller (50, 60) controls ON/OFF operations by using the values stored in the storage (62) to compensate for a manipulated variable (iT*) of control performed by the power converter (13) in association with the phase angle (θin) of the voltage (Vin) of the AC power supply (30).

    摘要翻译： 本文公开了一种包括存储器（62）和功率转换控制器（50,60）的功率转换设备。 存储器（62）与交流电源（Vin）的电压（Vin）的相位角（θin）相关联地存储多个值，每个值与引起到电力转换器（13）的电流失真（Iin） 供应（30）。 功率转换控制器（50,60）通过使用存储在存储器（62）中的值来控制开/关操作，以补偿由功率转换器（13）执行的控制的操作变量（iT *）与相位 交流电源（30）的电压（Vin）的角度（θin）。

    OFFSET VOLTAGE GENERATOR AND METHOD FOR GENERATING AN OFFSET VOLTAGE OF THREE-PHASE INVERTER
    10.
    发明公开
    OFFSET VOLTAGE GENERATOR AND METHOD FOR GENERATING AN OFFSET VOLTAGE OF THREE-PHASE INVERTER 有权
    失调电压发生器及其制造方法的偏移电压相逆变器

    公开(公告)号：EP3082247A3

    公开(公告)日：2017-01-18

    申请号：EP16160443.4

    申请日：2016-03-15

    申请人： LSIS Co., Ltd.

    发明人： LEE, Hak-Jun

    IPC分类号： H02M7/5387 ,  H02M1/12 ,  H02P27/08 ,  H02M7/5395

    CPC分类号： H02M7/44 ,  H02M1/12 ,  H02M7/483 ,  H02M7/497 ,  H02M7/53873 ,  H02M2001/0025 ,  H02M2007/53876 ,  H02P27/08 ,  H02P27/085 ,  H02P2209/13

    摘要： An offset voltage generator including: a first limiter (502a) configured to compare a first phase-voltage signal with a maximum limit value and a minimum limit value to output a first limit-voltage signal; a second limiter (502b) configured to compare a second phase-voltage signal with the maximum limit value and the minimum limit value to output a second limit-voltage signal; a third limiter (502c) configured to compare a third phase-voltage signal with the maximum limit value and the minimum limit value to output a third limit-voltage signal; and a summer (504) configured to add a difference between the first phase-voltage signal and the first limit-voltage signal, a difference between the second phase-voltage signal and the second limit-voltage signal, and a difference between the third phase-voltage signal and the third limit-voltage signal, to output an offset voltage.