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    • 1. 发明公开
    • SYSTEM FOR MEASURING SOFT STARTER CURRENT AND METHOD OF MAKING SAME
    • VERFAHREN ZUR HERSTELLUNG DAVON系统ZUR MESSUNG EINES SOFTSTARTERSTROMS
    • EP2867985A1
    • 2015-05-06
    • EP13733185.6
    • 2013-06-18
    • Eaton Corporation
    • WOODLEY, Kaijam, M.
    • H02P1/42H03K17/18H03K17/72
    • G01R31/2633G01R19/0092G01R31/263G01R31/34H02P1/423H03K17/166H03K17/725H03K2217/0009Y10T29/49002
    • A system for measuring soft starter current includes a current monitoring system including a controller and a current transfer device that includes a first thyristor and a first conductor coupled to the first thyristor and configured to convey a first current flowing through the first thyristor, wherein the first current includes current flowing through the first thyristor when the first thyristor is in an off state. The system also includes a first current sensor configured to sense the first current and a first current measurement circuit coupled to the first current sensor and coupleable to the controller and configured to output a first output value to the controller representative of the first current flowing through the first thyristor. The controller is configured to determine an impending inoperability of the first thyristor based on the first current and alert a user if the first current indicates the impending inoperability.
    • 一种用于测量软起动器电流的系统包括电流监测系统,其包括控制器和电流传输装置,其包括第一晶闸管和耦合到第一晶闸管的第一导体,并且被配置为传送流过第一晶闸管的第一电流,其中第一 电流包括当第一晶闸管处于断开状态时流过第一晶闸管的电流。 该系统还包括被配置为感测第一电流的第一电流传感器和耦合到第一电流传感器并耦合到控制器的第一电流测量电路,并且被配置为将第一输出值输出到控制器,该控制器表示流过 第一个晶闸管 所述控制器被配置为基于所述第一电流来确定所述第一晶闸管即将发生的不可操作性,并且如果所述第一电流指示即将发生的不可操作性则警告用户。
    • 3. 发明公开
    • Motor control systems
    • Motorsteuerungssysteme
    • EP2256920A3
    • 2013-11-06
    • EP10162825.3
    • 2010-05-14
    • B.D.G. el s.p.a.
    • Ryan, Paul ThomasMazzani, Luis
    • H02P1/42
    • H02P1/42H02P1/423H02P2205/01H02P2207/01
    • A starting/boost control system for a refrigerator compressor, the refrigerator compressor comprising an induction motor having a main winding and a starting/boost winding, the motor being energised from a single phase of an AC mains power supply, the starting/boost control system comprising: an electronic controller having a power supply derived from said AC mains power supply; a sense input coupled to said electronic controller to sense a degree to which said motor is running; a control output to control starting/boost of said motor; a controllable switch having a control connection coupled to said control output to switch power from said AC mains power supply to said starting/boost winding; and an impedance coupled in series with said switch between said AC mains power supply and said starting/boost winding; and wherein said electronic controller is configured to respond to a sensed motor condition dependent on said degree to which said motor is running to perform one or both of: i) opening of said switch to disconnect said starting/boost winding responsive to a determination that said motor has started following application of said AC mains power supply to said main winding of said motor; and ii) closing of said switch to re-connect said starting/boost winding to said AC mains power supply responsive to a determination that a mechanical output of said motor is to be boosted, until said electronic controller determines that a defined condition of said motor is met.
    • 4. 发明公开
    • Dispositif de commande électromécanique à moteur sychrone
    • Elektromechanische RegelvorrichtungfürSynchronmotoren
    • EP1146632A1
    • 2001-10-17
    • EP01400900.5
    • 2001-04-06
    • Crouzet Automatismes
    • Flandin, DenisHilaire, Jean-Francois
    • H02P1/44
    • H02P1/44H02P1/423H02P23/24H02P2207/05
    • Pour rendre plus sûr le fonctionnement de ces actionneurs, on prévoit selon l'invention des moyens électroniques pour donner au moteur un couple supérieur au couple nominal du moteur, pendant une durée initiale td (par exemple une seconde) suivant l'ordre de démarrage, puis un couple plus réduit pendant le reste de la durée de fonctionnement du moteur. Pour cela, la tension d'alimentation au départ peut être largement supérieure à la tension nominale sous laquelle le moteur pourrait normalement fonctionner en permanence sans risque d'échauffement anormal. Dans un exemple, la tension d'alimentation (AC) est appliquée au moteur à travers des résistances (R1, R2) qui la font chuter de manière importante; et ces résistances peuvent être court-circuitées par des triacs (TR'1, TR'2 respectivement pour chacun des sens de rotation du moteur) pendant la durée de démarrage td.
      Application : actionneur linéaire de clapet de vanne hydraulique, pour vaincre plus facilement les forces de frottement sec, ou les forces de collage du clapet après un long temps passé dans une position donnée.
    • 同步电机机电控制器具有电路(R1,TR1,TR'1),设计用于在电动机起动之后的时间段(td)期间产生第一电动机转矩值,而第二个值小于该期间结束时的第一个电动机转矩值。 通过施加比在周期(td)之后提供的平均电压高的电源电压来产生第一转矩值。 周期(id)之后的平均电源电压是电机额定电压,外部电机不能永久旋转,而不会有异常加热的风险。 期间(td)的电压大于额定值。 电阻(R1,R2)插在端子(D)和定子绕组(L1,L2)之间,并被至少一个三端双向可控硅开关(TR'1,TR'2)分流, ID)。 包括一个独立权利要求 - 一个使用二极管整流桥的电路,代替三端双向可控硅开关,来控制晶体管的导通。
    • 7. 发明公开
    • A motor starter device having reduced power consumption
    • 具有降低的功耗的发动机的起动
    • EP1569325A3
    • 2011-02-16
    • EP05251063.3
    • 2005-02-23
    • Sensata Technologies Massachusetts, Inc.
    • Unno, Mitsuru
    • H02P1/44H02P1/42
    • H02P1/423H02P1/44
    • A motor starter for use with a motor (20) having a main winding (M) and a start winding (S). The starter has a PTC thermistor (30) connected in series with the start winding (S). A triac (40) is connected between PTC thermistor (30) and a power source line. A control circuit (50) is connected to the power source line for providing a voltage for a gate terminal (G) of triac (40) and an overload relay (60) is connected between the power source (10) and the motor (20). The control circuit (50) preferably includes a current detecting circuit (52) for detecting the inrush current and a voltage generating circuit (54) for generating the voltage in response to the detected inrush current. At the startup of motor (20) the control circuit (50) allows triac (40) to turn on by providing the gate terminal (G) with the voltage based on the inrush current. According to this invention, the power consumption of the start winding S after the startup of the motor (20) can be almost zero thus providing low power consumption. In another embodiment not employing a PTC thermistor, a current detecting circuit and a voltage generating circuit are used to control the on and off states of a first triac (90) which in turn controls the on and off states of a second triac (92) connected in series with the start winding.