公开(公告)号：US06909254B2

公开(公告)日：2005-06-21

申请号：US10480935

申请日：2002-07-01

申请人： Heikki Saari ,  Osmo Pasuri ,  Aarne Mielonen

发明人： Heikki Saari ,  Osmo Pasuri ,  Aarne Mielonen

IPC分类号： H02P5/74 ,  H02D7/00

CPC分类号： H02P5/74

摘要： A method and an arrangement for stopping sectional drive controllably in connection with a fault situation in the supplying mains, the sectional drive comprising a plurality of inverters (4) which are supplied by a DC intermediate circuit (3) supplied by the mains (1), a plurality of electric motors (5) which are controlled by inverters with speed and/or torque control and which are used for implementing speed and tightness reference values of the strip in the sectional drive system, the tightness reference value being predetermined motor-specifically or motor-group-specifically. Prior to stopping the sectional drive, the method comprises the implementing step of predetermining an estimate (T) of the time needed for stopping the motors, whereby the method comprises the steps, in connection with a fault situation, of detecting a fault situation in the supplying mains, forming a deceleration reference value for the motors for stopping the motors within a predetermined time, controlling the speed of the speed-controlled motors in the sectional drive on the basis of the deceleration reference value, controlling the torque of the torque-controlled motors in the sectional drive on the basis of the predetermined tightness reference value, determining the magnitude of the DC voltage intermediate circuit (3) and altering the deceleration reference value on the basis of the magnitude of the DC voltage.

摘要翻译： 一种用于与供电电源的故障情况相结合地停止分段驱动的方法和装置，该部分驱动包括由主电源（1）提供的直流中间电路（3）提供的多个逆变器（4） ，多个电动机（5），其由具有速度和/或转矩控制的逆变器控制，并且用于在分段驱动系统中实现带材的速度和紧密度参考值，紧密度参考值是预定的电动机 特别是运动组。 在停止分段驱动之前，该方法包括预先确定停止电动机所需时间的估计（T）的实施步骤，由此该方法包括与故障情况有关的步骤，以检测故障情况 供给电源，在预定时间内形成用于停止电动机的电动机的减速基准值，基于减速基准值来控制分段驱动中的速度控制电动机的速度，控制转矩控制的转矩 基于预定的紧密度基准值进行分段驱动的电动机，基于直流电压的大小确定直流电压中间电路（3）的大小并改变减速度基准值。