公开(公告)号：US20160293363A1

公开(公告)日：2016-10-06

申请号：US15033368

申请日：2013-11-12

Applicant: ABB TECHNOLOGY LTD

Inventor： Björn LUNDÉN ,  Gunnar JOHANSSON ,  Lars ANDERSSON

IPC: H01H47/04 ,  G01R19/25 ,  H01H47/32

CPC classification number: H01H47/04 ,  G01R19/2506 ,  H01H47/32 ,  H01H47/325

Abstract: A method in a control unit for closing a contactor device. The control unit is configured to enable the movement between the closed and opened position by energizing a coil of an electromagnetic circuit. The method includes applying a voltage over the coil; determining, during a first period of time, current through the coil and voltage over the coil and estimating based thereon model parameters for a model predicting the behavior of the current through the coil if the contactor device were to stay in an open position, and measuring, after the ending of the first period of time, current through the coil and determining a difference between, on the one hand the measured current and, on the other hand a predicted current of the model, and repeating the measuring and determining until a state change from open position to closed position is detected by the difference in current.

Abstract translation: 用于关闭接触器装置的控制单元中的方法。 控制单元构造成通过对电磁线圈的线圈通电来实现闭合位置和打开位置之间的移动。 该方法包括在线圈上施加电压; 在第一时间段期间确定通过线圈的电流和线圈上的电压，并且基于模型估计模型参数，用于模型预测如果接触器装置保持在打开位置时通过线圈的电流的行为，并且测量 在第一时间段结束之后，电流通过线圈并确定一方面测量的电流之间的差异，另一方面确定模型的预测电流，并重复测量并确定直到状态 通过电流差来检测从打开位置到关闭位置的变化。