公开(公告)号：US20150214877A1

公开(公告)日：2015-07-30

申请号：US14606622

申请日：2015-01-27

Applicant: ABB AG

Inventor： Eberhard RIMANN ,  Christian SCHLEGER ,  Ludwig WERLE

IPC: H02P7/292

CPC classification number: H02P7/292 ,  H02P3/08 ,  H02P29/0241

Abstract: An exemplary power supply system for a direct-current drive includes a power converter for at least one direction-dependent two-quadrant operating mode, at least one associated pulse-based actuation device, an input-side connection and an output-side connection for the power converter, and at least one mechanical interruption device for the input-side connection and/or the output-side connection. The power supply system is provided to continually provide values of a current flowing on the output-side during operation by receiving an STO (safe torque off) signal, immediate changeover of the power converter operating mode into the inverter limitation if an STO signal is received, interrupting a feed of actuation power through the actuation device into the power converter, and supplying an interruption signal to the at least one mechanical interruption device once a second subsequent time interval has elapsed and the current flowing on the output side has not decayed below a safety-critical limit value.

Abstract translation: 用于直流驱动的示例性电源系统包括用于至少一个依赖于方向的两象限操作模式的功率转换器，至少一个相关联的基于脉冲的致动装置，输入侧连接和输出侧连接， 功率转换器和用于输入侧连接和/或输出侧连接的至少一个机械中断装置。 电源系统被提供以通过接收STO（安全转矩关闭）信号来连续提供在运行期间在输出侧流动的电流的值，如果接收到STO信号，则将功率转换器工作模式立即切换到逆变器限制中 ，通过所述致动装置将致动动力的进给中断进入所述功率转换器，并且一旦经过了第二后续时间间隔并且在所述输出侧流动的电流没有衰减到低于 安全关键极限值。