利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.015 秒)

    DIRECT-CURRENT CIRCUIT BREAKER AND IMPLEMENTATION METHOD THEREFOR
    2.
    发明公开
    DIRECT-CURRENT CIRCUIT BREAKER AND IMPLEMENTATION METHOD THEREFOR 审中-公开
    GLEICHSTROMSCHUTZSCHALTER UND IMPLEMENTIERUNGSVERFAHRENDAFÜR

    公开(公告)号：EP2963751A1

    公开(公告)日：2016-01-06

    申请号：EP13876671.2

    申请日：2013-12-03

    申请人： State Grid Corporation of China (SGCC) ,  State Grid Smart Grid Research Institute ,  China-Epri Electric Power Engineering Co. Ltd. ,  North China Grid Company Limited

    发明人： TANG, Guangfu ,  GAO, Chong ,  LUO, Xiang ,  WEI, Xiaoguang ,  QIU, Yufeng ,  CAO, Junzheng

    IPC分类号： H02H3/08

    CPC分类号： H02H3/38 ,  H01H33/596 ,  H02H9/02

    摘要： The present invention provides a direct current circuit breaker and its implementation method, which includes the cutout circuit, the commutation circuit and the energy absorption circuit connected in parallel, wherein the cutout circuit includes cutout inductance and cutout unit connected in series, the commutation circuit includes commutation inductance, commutation unit and mechanical switch connected in series, commutation unit has a smaller on-resistance compared to cutout unit. The direct current circuit breaker topology of the present invention is novelty, concise, fully functional, easy to control and can flexible extend to apply to different voltage occasion. Through using power semiconductor switch module to cut off the current, It will have a quickly action, without generating electric arc, while the modular construction also reduces the consistency requirements of the power electronic component, and easy to realize the voltage-sharing of the power semiconductor in series, the capacitor included in the module also plays a role of limiting the current. Commutation circuit and cutout circuit through the full-bridge structure can realize the shunt, reduce the current stress of the power electronic component, and also reduce the component cost.

    摘要翻译： 本发明提供一种直流断路器及其实现方法，其包括并联连接的切换电路，换向电路和能量吸收电路，其中切断电路包括串联连接的切断电感和切断单元，换向电路包括 换向电感，换向单元和串联连接的机械开关，与切断单元相比，换向单元具有较小的导通电阻。 本发明的直流断路器拓扑结构新颖，简洁，功能齐全，易于控制，可灵活应用于不同电压场合。 通过使用功率半导体开关模块切断电流，可快速动作，不产生电弧，同时模块化结构也降低了电力电子元件的一致性要求，易于实现功率分压 半导体串联，包含在模块中的电容器也起到限制电流的作用。 通过全桥结构的换向电路和切断电路可实现分流，降低电力电子元件的电流应力，并降低元件成本。

    COMMUTATION APPARATUS BASED ON CONTROLLABLE COMMUTATION INDUCTOR, AND IMPLEMENTATION METHOD THEREFOR
    5.
    发明公开
    COMMUTATION APPARATUS BASED ON CONTROLLABLE COMMUTATION INDUCTOR, AND IMPLEMENTATION METHOD THEREFOR 审中-公开
    KOMMUTIERUNGSVORRICHTUNG AUF基于EINER STEGERBAREN SCHALTSPULE UND IMPLEMENTIERUNGSVERFAHRENDAFÜR

    公开(公告)号：EP3073598A1

    公开(公告)日：2016-09-28

    申请号：EP13897975.2

    申请日：2013-12-13

    申请人： State Grid Corporation of China ,  State Grid Smart Grid Research Institute ,  China-Epri Electric Power Engineering Co. Ltd.

    发明人： TANG, Guangfu ,  XU, Weihua ,  WEI, Xiaoguang ,  ZHA, Kunpeng

    IPC分类号： H02J3/36

    CPC分类号： H02J3/36 ,  H02J2003/365 ,  Y02E60/60

    摘要： A commutation apparatus based on a controllable commutation inductor (3), and an implementation method therefor. The commutation apparatus uses a three-phase half-bridge structure. The three-phase half-bridge structure consists of serially connected commutation units. Each of the commutation units comprises a converter transformer and a converter inverter (2). A commutation inductor is serially connected between the valve side of the converter transformer and the converter inverter. A controllable inductor in the commutation inductor is used together with a control protection system in a converter station. When the converter station normally operates, a switch is turned off, and the controllable inductor is comprised in the commutation inductor; when the control protection system in the converter station detects a commutation failure, the switch is turned on, so that a leakage inductance value of the commutation inductor is lowered, the commutation angle is reduced, and the turn-off angle is increased. The commutation apparatus improves a commutation feature of a converter valve on an inverter side when a commutation failure occurs, and the commutation apparatus has the advantages of requiring less elements, is easy to implement, and requiring low cost.

    摘要翻译： 一种基于可控换向电感器（3）的换向装置及其实现方法。 换向装置使用三相半桥结构。 三相半桥结构由串联连接的换向单元组成。 每个换向单元包括转换器变换器和转换器逆变器（2）。 换流电感器串联连接在转换变压器的阀侧和转换器变换器之间。 换向电感器中的可控电感器与转换站中的控制保护系统一起使用。 当转换站正常工作时，开关断开，可控电感器包含在换向电感器中; 当转换站中的控制保护系统检测到换向故障时，开关导通，使换向电感器的漏感值降低，换向角度减小，关断角度增大。 当换向故障发生时，换流装置改善了变换器侧的换向阀的换向特性，换向装置具有要求较少元件，易于实施并且要求低成本的优点。