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109 条记录 (耗时 0.013 秒)

    Verfahren zum Zuschalten eines Umrichters an einen Asynchronmotor und Umrichter mit einer Steuer- und Regelelektronik
    31.
    发明公开
    Verfahren zum Zuschalten eines Umrichters an einen Asynchronmotor und Umrichter mit einer Steuer- und Regelelektronik 有权
    用于连接转换器到一个异步电动机和转换器的控制电路和调节电路的方法

    公开(公告)号：EP1049243A3

    公开(公告)日：2003-11-12

    申请号：EP00105541.7

    申请日：2000-03-16

    申请人： Sew-Eurodrive GmbH & Co. KG

    发明人： Wolf, Harald ,  Hammel, Wolfgang

    IPC分类号： H02P7/628

    CPC分类号： H02P21/12 ,  H02P1/029 ,  H02P21/34

    摘要： Verfahren zum Zuschalten eines Umrichters an einen Asynchronmotor, wobei der Rotor gegenüber dem Stator vor und/oder während des Zuschaltens mit einer unbekannten beliebigen Drehzahl rotiert, und wobei kein Winkelsensor oder Drehzahlsensor notwendig ist, wobei ein an den Klemmen der Statorwicklungen anliegender Statorspannungszeiger u S von der Steuer- und Regelschaltung bestimmt wird, und wobei ein durch die Statorwicklungen fließender Statorstromzeiger i S bestimmt wird, und wobei aus Statorspannungszeiger u S und Statorstromzeiger i S ein Schätzwert oder Modellwert für den Statorflusszeiger ψ S,mod oder für eine dem Statorflusszeiger ψ S,mod entsprechende Größe bestimmt wird, und wobei aus dem Schätzwert oder Modellwert für den Statorflusszeiger ψ S,mod oder der dem Statorflusszeiger ψ S,mod entsprechenden Größe ein Sollwert für den Statorstromzeiger i S,Soll bestimmt wird, wobei dessen Betrag I = |iS,Soll| vorgebbar ist, und wobei der Stromregler 11 dieser so bestimmte Sollwert für den Statorstromzeiger i S,Soll und der Statorstromzeiger als Istwert i S zugeführt wird und die Stromregler 11 einen Wert für die Statorspannungszeiger u S so erzeugt, dass der Statorstrom i S auf den Sollwert i S,Soll geregelt wird.

    Voltage-controlled starting relay for induction motor
    32.
    发明公开
    Voltage-controlled starting relay for induction motor 审中-公开
    Spannungsgeregeltes Startrelayfüreinen Induktionsmotor

    公开(公告)号：EP1315279A2

    公开(公告)日：2003-05-28

    申请号：EP02023625.3

    申请日：2002-10-18

    申请人： Kim, In-Seok ,  Kim, Young-Jun

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： H02P1/42

    CPC分类号： H02P1/42 ,  H02P1/029 ,  H02P1/44

    摘要： There is provided a voltage-controlled electronic relay for starting a single-phase induction motor, which includes: a power supply unit (310), configured of a bridge diode (BD), for supplying power to circuit elements of the starting relay when AC power of the induction motor is turned on; a triac (306) for applying the AC power to a starting coil (W3) of the induction motor or cutting off the AC power; a signal input unit (322) for sensing a voltage induced to the starting coil; a hysteresis unit (324) for outputting an ON control signal at the initial starting stage, generating an OFF control signal for turning off the switch when the induced voltage sensed by the sensing element reaches a predetermined OFF reference voltage, and generating the ON control signal for turning on the switch again when the induced voltage becomes lower than a predetermined ON reference voltage during a normal operation period; and a triggering unit (330) for turning on the switch according to the ON control signal of the hysteresis unit and turning off the switch according to the OFF control signal. Accordingly, impulse noise generated across the triac is removed using a spark killer and stabilized voltage is provided to the circuit elements.

    摘要翻译： 提供了一种用于启动单相感应电动机的压控电子继电器，其包括：电源单元（310），其由桥式二极管（BD）构成，用于在AC时向起动继电器的电路元件供电 感应电动机的电源接通; 用于将AC电力施加到感应电动机的起动线圈（W3）或切断AC电力的三端双向可控硅（306）; 信号输入单元（322），用于感测对起动线圈感应的电压; 用于在初始起动阶段输出ON控制信号的滞后单元（324），当由感测元件感测到的感应电压达到预定的OFF参考电压时，产生关闭开关的OFF控制信号，并产生ON控制信号 当在正常操作期间感应电压变得低于预定的ON参考电压时再次接通开关; 以及触发单元，用于根据滞后单元的ON控制信号接通开关，并根据OFF控制信号关断开关。 因此，使用火花激光器去除在三端双向可控硅开关产生的脉冲噪声，并且向电路元件提供稳定的电压。

    METHOD FOR RESTARTING INDUCTION MACHINE
    37.
    发明公开
    METHOD FOR RESTARTING INDUCTION MACHINE 审中-公开
    重启感应电机的方法

    公开(公告)号：EP3142243A3

    公开(公告)日：2017-08-09

    申请号：EP16180795.3

    申请日：2016-07-22

    申请人： LSIS Co., Ltd. ,  Research Cooperation Foundation of Yeungnam University

    发明人： LEE, Hak-Jun ,  YOO, Anno ,  KIM, Se-Hwan ,  SEOK, Jul-Ki

    IPC分类号： H02P1/02

    CPC分类号： H02P21/34 ,  H02P1/029 ,  H02P27/08 ,  H02P2207/01

    摘要： A method for restarting an induction machine of the present disclosure includes estimating a position of a rotor and a speed thereof in a position and speed estimation Operation, resetting a speed reference to correspond to the speed of the rotor in a speed reference resetting Operation, generating a control voltage corresponding to the speed reference to regulate a voltage magnitude using the control voltage in a voltage magnitude regulation Operation, and re-accelerating the induction machine up to a target speed after the regulation of the voltage magnitude in a re-acceleration Operation.

    摘要翻译： 一种用于重新启动本发明的感应电机的方法包括：在位置和速度估计操作来估计转子的位置和速度上，重置一速度基准，以对应于在速度参考转子复位操作的速度，生成 控制电压对应于速度基准，以在电压幅度调节操作中使用控制电压来调节电压幅度，并且在再加速操作中调节电压幅度之后将感应电机再加速至目标速度。

    POWER CONVERSION APPARATUS
    38.
    发明公开
    POWER CONVERSION APPARATUS 审中-公开

    公开(公告)号：EP3160036A2

    公开(公告)日：2017-04-26

    申请号：EP16193668.7

    申请日：2016-10-13

    申请人： Hitachi, Ltd.

    发明人： Kojima, Tetsuo ,  Sugiura, Tetsu

    IPC分类号： H02P21/00

    CPC分类号： H02P21/36 ,  H02P1/029

    摘要： The invention aims at attenuating a magnetic flux sufficiently while stopping operation of a motor, so as to prevent excessive current and torque from occurring next time the motor is started, prevent excessive current and torque from occurring when attenuating the magnetic flux prior to stopping a power conversion apparatus, even if temperature fluctuation or change of constant occurs, without providing a magnetic sensor. A control unit of a power conversion apparatus includes a voltage operation part generating a voltage command driving the induction motor based on a current command, and a PWM operation part outputting the gate pulse signal based on the voltage command, and during cutoff from lowering to reaching zero of an excitation current command and a torque current command, the control unit sets an excitation current command during cutoff computed by adding an excitation current command correction quantity calculated according to a time variation of an excitation current command to the excitation current command, a magnetic flux command during cutoff obtained by multiplying the excitation current command by a gain, and the torque current command, as the current command with respect to the voltage operation part.

    POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING SAME
    40.
    发明公开
    POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING SAME 审中-公开
    VERFAHREN ZU DEREN STEUERUNG的STROMWANDLERVORRICHTUNG

    公开(公告)号：EP2991219A4

    公开(公告)日：2017-01-04

    申请号：EP14788189

    申请日：2014-04-07

    申请人： FUJI ELECTRIC CO LTD

    发明人： ITOIGAWA NOBUO ,  ICHIHARA TAKAO

    IPC分类号： H02P27/06 ,  H02M7/48 ,  H02P1/02 ,  H02P6/182 ,  H02P6/20 ,  H02P21/18 ,  H02P21/22

    CPC分类号： H02P6/20 ,  H02P1/029 ,  H02P6/16 ,  H02P6/182 ,  H02P9/08 ,  H02P21/18 ,  H02P21/22

    摘要： A power conversion device includes an inverter section 40 which can convert between direct current power and alternating current power by turning on and off a plurality of bridge-connected semiconductor switching elements to each of which a free wheel diode is connected in reverse parallel; and a rotating electric machine 50, such as an alternating current generator or an alternating current motor, which is connected to the alternating current terminals of the inverter section 50, wherein when the direct current voltage of the inverter section 40 is below a specified value when starting the rotating electric machine 50, an operation of detecting the speed of the rotating electric machine 50 is executed in a condition in which the direct current voltage of the inverter section 40 is boosted to equal to or more than a specified value of the induced voltage of the rotating electric machine 50, or the like, by intermittently turning on and off at least one of the plurality of semiconductor switching elements of the inverter section 40. By so doing, it is possible to accurately detect the speed of the rotating electric machine 50 and stably start the rotating electric machine 50 even when the direct current voltage of the inverter section 40 is lower than the induced voltage of the rotating electric machine 50.

    摘要翻译： 电力转换装置包括逆变器部分40，其可以通过接通和断开多个桥接的半导体开关元件直接电流和交流电力之间的转换，其中每个续流二极管反向并联连接; 以及连接到逆变器部50的交流电流端子的交流发电机或交流电动机等旋转电机50，其中，当逆变器部40的直流电压低于规定值时， 启动旋转电机50时，在将逆变器部40的直流电压提升到感应电压的规定值以上的条件下，执行检测旋转电机50的速度的动作 旋转电机50等通过间歇地打开和关闭逆变器部分40的多个半导体开关元件中的至少一个。通过这样做，可以精确地检测旋转电机的速度 并且即使在逆变器部40的直流电压低于感应电压o的情况下，也能够稳定地起动旋转电机50 f是旋转电机50。